Datasets:

aki-008
/

teleco_ai_challenge_data

Modalities:

Text

Formats:

Size:

Libraries:

Dataset card Data Studio Files Files and versions

xet

Community

Dataset Viewer

Auto-converted to Parquet Duplicate

Split (2)

train · 2.4k rows

question stringlengths 4.08k 5k	answer stringclasses 8 values
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:23:52.000000\|128.188169\|32.579273\|1\|712\|-77.0\|15.93\|1351.25\|258\|71\|284\|-\|-\|-90.49\|-95.82\|-102.2\|-\|-\|210.91 2025-05-07 15:23:53.000000\|128.18814\|32.579223\|2\|71\|-80.97\|6.6\|366.57\|258\|712\|129\|-\|-\|-88.72\|-93.26\|-105.47\|-\|-\|211.23 2025-05-07 15:23:54.000000\|128.188117\|32.579174\|16\|71\|-85.5\|1.81\|334.0\|258\|712\|-\|-\|-\|-84.41\|-96.46\|-\|-\|-\|210.99 2025-05-07 15:23:55.000000\|128.188103\|32.579113\|14\|71\|-88.21\|5.4\|431.94\|712\|258\|-\|-\|-\|-88.04\|-93.72\|-\|-\|-\|195.26 2025-05-07 15:23:56.000000\|128.188088\|32.579075\|19\|71\|-78.45\|13.59\|566.34\|712\|258\|284\|-\|-\|-87.97\|-98.7\|-105.92\|-\|-\|209.0 2025-05-07 15:23:57.000000\|128.188073\|32.579033\|22\|258\|-77.45\|11.45\|1308.74\|712\|71\|284\|129\|-\|-89.56\|-93.31\|-104.18\|-110.78\|-\|204.95 2025-05-07 15:23:58.000000\|128.188051\|32.579002\|16\|258\|-81.66\|10.06\|1310.14\|712\|71\|284\|129\|-\|-84.85\|-93.3\|-102.87\|-114.09\|-\|210.13 2025-05-07 15:23:59.000000\|128.188073\|32.578995\|26\|258\|-79.13\|16.32\|1023.36\|712\|71\|284\|129\|-\|-86.75\|-93.71\|-104.01\|-107.26\|-\|208.06 2025-05-07 15:24:00.000000\|128.188036\|32.578984\|33\|258\|-74.09\|19.8\|770.83\|712\|71\|284\|129\|-\|-89.29\|-96.4\|-100.21\|-114.11\|-\|207.07 2025-05-07 15:24:01.000000\|128.188036\|32.578984\|25\|258\|-71.09\|19.62\|1014.75\|712\|71\|-\|-\|-\|-90.14\|-92.93\|-\|-\|-\|205.57 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|4\|128.188273\|32.579129\|50\|6\|4\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.217634\|32.58072\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034038\|2\|128.188282\|32.579099\|140\|10\|4\|0\|DEFAULT\|5.0\|258\|64T64R\|34.9\|NR AAU 2 0034038\|24\|128.18769\|32.57791\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033164\|14\|128.189481\|32.581043\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:22:16.000000\|128.188765\|32.580933\|17\|71\|-86.03\|17.36\|850.53\|307\|498\|868\|-\|-\|-93.31\|-105.85\|-116.17\|-\|-\|210.39 2025-05-07 16:22:17.000000\|128.188773\|32.580926\|20\|71\|-85.42\|14.09\|1202.59\|307\|498\|868\|151\|-\|-92.17\|-100.52\|-107.25\|-117.89\|-\|210.94 2025-05-07 16:22:18.000000\|128.188779\|32.580914\|22\|71\|-82.24\|11.57\|520.58\|307\|498\|868\|-\|-\|-95.62\|-99.37\|-107.33\|-\|-\|211.09 2025-05-07 16:22:19.000000\|128.188793\|32.580895\|3\|71\|-87.98\|11.32\|490.28\|307\|498\|868\|-\|-\|-98.66\|-103.8\|-108.35\|-\|-\|210.95 2025-05-07 16:22:20.000000\|128.188778\|32.580865\|5\|307\|-86.82\|14.64\|388.58\|71\|498\|368\|-\|-\|-94.4\|-97.99\|-107.43\|-\|-\|210.44 2025-05-07 16:22:21.000000\|128.188759\|32.580476\|21\|307\|-77.67\|10.16\|482.09\|71\|498\|368\|-\|-\|-90.76\|-98.14\|-103.59\|-\|-\|210.84 2025-05-07 16:22:22.000000\|128.188749\|32.580766\|17\|307\|-86.21\|6.89\|1170.78\|71\|498\|368\|-\|-\|-91.42\|-97.37\|-103.69\|-\|-\|198.41 2025-05-07 16:22:23.000000\|128.188719\|32.580697\|33\|307\|-80.95\|7.08\|1212.16\|71\|498\|368\|-\|-\|-93.43\|-98.08\|-109.13\|-\|-\|205.57 2025-05-07 16:22:24.000000\|128.188704\|32.580618\|24\|307\|-85.33\|6.35\|1166.87\|71\|498\|656\|368\|-\|-96.21\|-100.19\|-108.68\|-112.19\|-\|206.56 2025-05-07 16:22:25.000000\|128.188674\|32.580538\|23\|307\|-76.77\|12.71\|1016.05\|71\|498\|656\|368\|-\|-97.08\|-101.53\|-109.84\|-113.35\|-\|209.11 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|14\|128.189202\|32.581003\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033164\|24\|128.188958\|32.581776\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1 0033164\|27\|128.189155\|32.58094\|260\|44\|9\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034036\|14\|128.200652\|32.594683\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033164\|12\|128.190042\|32.583484\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033164\|26\|128.189174\|32.580984\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1 0000293\|0\|128.175807\|32.58945\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191929\|32.578763\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0034039\|4\|128.192385\|32.578738\|255\|20\|255\|0\|DEFAULT\|111.0\|656\|64T64R\|34.9\|NR AAU 2	C1
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:24:22.000000\|128.186911\|32.584055\|24\|330\|-86.56\|22.51\|964.18\|591\|660\|-\|-\|-\|-108.59\|-114.77\|-\|-\|-\|202.7 2025-05-07 14:24:23.000000\|128.186911\|32.584055\|5\|330\|-86.01\|21.17\|797.53\|591\|660\|-\|-\|-\|-107.89\|-116.76\|-\|-\|-\|207.17 2025-05-07 14:24:24.000000\|128.185869\|32.585626\|8\|330\|-84.77\|20.68\|803.45\|591\|660\|-\|-\|-\|-106.98\|-112.41\|-\|-\|-\|197.95 2025-05-07 14:24:25.000000\|128.186911\|32.584055\|10\|660\|-85.11\|19.91\|258.08\|591\|330\|-\|-\|-\|-105.19\|-115.77\|-\|-\|-\|186.76 2025-05-07 14:24:26.000000\|128.186911\|32.584055\|26\|660\|-87.1\|22.06\|330.57\|591\|330\|-\|-\|-\|-105.13\|-115.44\|-\|-\|-\|210.03 2025-05-07 14:24:27.000000\|128.186911\|32.584055\|4\|660\|-89.17\|20.81\|369.32\|330\|591\|-\|-\|-\|-107.06\|-116.01\|-\|-\|-\|206.82 2025-05-07 14:24:28.000000\|128.186911\|32.584055\|24\|660\|-89.4\|20.93\|396.12\|330\|591\|-\|-\|-\|-105.7\|-115.88\|-\|-\|-\|209.6 2025-05-07 14:24:29.000000\|128.186911\|32.584055\|36\|591\|-87.05\|21.71\|911.82\|330\|660\|597\|-\|-\|-104.9\|-114.01\|-118.61\|-\|-\|205.73 2025-05-07 14:24:30.000000\|128.186911\|32.584055\|16\|591\|-84.2\|22.14\|893.16\|330\|660\|-\|-\|-\|-104.21\|-116.47\|-\|-\|-\|205.63 2025-05-07 14:24:31.000000\|128.186911\|32.584055\|36\|591\|-86.77\|20.48\|993.16\|330\|660\|597\|-\|-\|-105.03\|-115.41\|-122.84\|-\|-\|209.06 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.203985\|32.589187\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186986\|32.585957\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179948\|32.574116\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18644\|32.584389\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:18:52.000000\|128.188581\|32.583168\|7\|151\|-87.21\|10.23\|1209.14\|330\|338\|-\|-\|-\|-99.53\|-106.66\|-\|-\|-\|209.18 2025-05-07 15:18:53.000000\|128.188595\|32.583168\|18\|151\|-87.05\|10.61\|1275.45\|330\|338\|868\|-\|-\|-98.78\|-104.62\|-110.14\|-\|-\|207.86 2025-05-07 15:18:54.000000\|128.188616\|32.583157\|25\|151\|-84.47\|10.43\|1214.03\|330\|338\|868\|-\|-\|-99.88\|-106.8\|-116.79\|-\|-\|205.2 2025-05-07 15:18:55.000000\|128.188638\|32.583157\|32\|151\|-87.37\|10.33\|1172.05\|330\|338\|982\|-\|-\|-100.29\|-104.1\|-115.42\|-\|-\|200.28 2025-05-07 15:18:56.000000\|128.188652\|32.583156\|1\|338\|-85.42\|9.72\|495.81\|330\|151\|-\|-\|-\|-100.3\|-105.69\|-\|-\|-\|210.48 2025-05-07 15:18:57.000000\|128.188674\|32.583148\|30\|338\|-87.14\|8.82\|460.17\|330\|151\|868\|982\|-\|-98.44\|-107.56\|-110.58\|-115.33\|-\|210.62 2025-05-07 15:18:58.000000\|128.188695\|32.583148\|4\|338\|-89.4\|8.44\|407.35\|151\|330\|-\|-\|-\|-96.89\|-106.17\|-\|-\|-\|208.29 2025-05-07 15:18:59.000000\|128.189412\|32.58311\|0\|338\|-82.13\|10.56\|475.98\|151\|330\|-\|-\|-\|-93.27\|-105.91\|-\|-\|-\|206.48 2025-05-07 15:19:00.000000\|128.188709\|32.583148\|23\|330\|-81.97\|10.79\|1202.48\|151\|338\|-\|-\|-\|-96.46\|-108.0\|-\|-\|-\|209.94 2025-05-07 15:19:01.000000\|128.188717\|32.583136\|18\|330\|-77.82\|17.05\|1301.84\|151\|338\|-\|-\|-\|-96.59\|-104.85\|-\|-\|-\|210.27 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.176065\|32.589488\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033918\|26\|128.220405\|32.582273\|310\|0\|8\|-15\|SCENARIO_3\|15.4\|338\|64T64R\|34.9\|NR AAU 2 0033164\|12\|128.190299\|32.583521\|250\|5\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033164\|4\|128.186719\|32.584429\|162\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0034036\|14\|128.20091\|32.594721\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033166\|25\|128.189771\|32.574208\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:41:42.000000\|128.197229\|32.585111\|31\|441\|-78.52\|10.36\|1136.62\|226\|13\|480\|-\|-\|-88.11\|-96.63\|-103.23\|-\|-\|178.59 2025-05-07 13:41:43.000000\|128.198455\|32.584408\|29\|441\|-82.88\|5.69\|626.36\|226\|13\|-\|-\|-\|-82.35\|-95.78\|-\|-\|-\|208.72 2025-05-07 13:41:44.000000\|128.197237\|32.58508\|21\|441\|-82.34\|3.9\|1143.77\|226\|13\|793\|-\|-\|-81.24\|-96.17\|-102.33\|-\|-\|210.15 2025-05-07 13:41:45.000000\|128.197229\|32.585069\|32\|441\|-84.55\|10.32\|319.87\|226\|13\|-\|-\|-\|-79.82\|-93.49\|-\|-\|-\|183.63 2025-05-07 13:41:46.000000\|128.197229\|32.585038\|30\|226\|-76.96\|10.88\|435.1\|441\|13\|-\|-\|-\|-87.35\|-100.68\|-\|-\|-\|192.84 2025-05-07 13:41:47.000000\|128.197222\|32.585019\|3\|441\|-85.45\|4.44\|449.48\|226\|13\|747\|-\|-\|-91.41\|-99.31\|-104.23\|-\|-\|206.35 2025-05-07 13:41:48.000000\|128.197222\|32.585\|26\|226\|-78.13\|6.39\|412.46\|441\|13\|747\|-\|-\|-86.45\|-97.39\|-103.7\|-\|-\|191.74 2025-05-07 13:41:49.000000\|128.197207\|32.584973\|10\|226\|-75.37\|11.83\|1137.89\|441\|13\|747\|-\|-\|-88.84\|-99.01\|-103.8\|-\|-\|198.58 2025-05-07 13:41:50.000000\|128.197192\|32.58495\|24\|226\|-69.9\|16.38\|1134.6\|441\|13\|-\|-\|-\|-84.99\|-96.59\|-\|-\|-\|189.86 2025-05-07 13:41:51.000000\|128.197177\|32.584912\|8\|226\|-71.06\|19.89\|1097.91\|441\|13\|747\|-\|-\|-86.48\|-99.45\|-106.34\|-\|-\|194.06 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033918\|38\|128.195582\|32.586069\|180\|20\|6\|0\|SCENARIO_12\|15.0\|226\|32T32R\|34.9\|NR AAU 1 0033917\|3\|128.193759\|32.576617\|320\|13\|7\|5\|SCENARIO_2\|31.5\|264\|64T64R\|34.9\|NR AAU 2 0033913\|25\|128.208989\|32.574724\|10\|16\|13\|10\|SCENARIO_2\|3.0\|793\|64T64R\|34.9\|NR AAU 2 0033984\|4\|128.190867\|32.589488\|130\|10\|255\|0\|DEFAULT\|78.0\|480\|64T64R\|34.9\|NR AAU 2 0033918\|13\|128.197412\|32.586605\|180\|2\|0\|0\|SCENARIO_4\|8.5\|441\|64T64R\|34.9\|NR AAU 2 0033918\|53\|128.193256\|32.586476\|60\|20\|5\|0\|DEFAULT\|38.0\|688\|32T32R\|34.9\|NR AAU 3 0033980\|38\|128.198662\|32.589556\|295\|12\|6\|0\|SCENARIO_12\|20.0\|13\|64T64R\|34.9\|NR AAU 2	C5
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:33:26.000000\|128.187017\|32.582126\|22\|217\|-85.51\|2.85\|1008.9\|96\|185\|265\|71\|-\|-81.93\|-102.91\|-104.86\|-113.71\|-\|199.75 2025-05-07 16:33:27.000000\|128.187031\|32.582106\|20\|217\|-79.09\|7.62\|862.89\|96\|185\|265\|-\|-\|-90.45\|-98.36\|-104.22\|-\|-\|181.18 2025-05-07 16:33:28.000000\|128.187052\|32.582099\|5\|217\|-77.71\|10.27\|1073.07\|96\|185\|71\|-\|-\|-86.2\|-99.07\|-104.98\|-\|-\|210.59 2025-05-07 16:33:29.000000\|128.187066\|32.582076\|25\|217\|-79.19\|7.03\|392.58\|96\|185\|265\|-\|-\|-87.4\|-101.61\|-109.44\|-\|-\|104.955 2025-05-07 16:33:30.000000\|128.187095\|32.582056\|22\|217\|-83.61\|5.75\|358.8\|96\|185\|498\|-\|-\|-83.87\|-98.91\|-111.79\|-\|-\|105.585 2025-05-07 16:33:31.000000\|128.187123\|32.582037\|16\|96\|-88.85\|1.21\|263.23\|217\|185\|-\|-\|-\|-83.2\|-95.44\|-\|-\|-\|105.425 2025-05-07 16:33:32.000000\|128.187166\|32.582006\|21\|96\|-80.0\|11.88\|142.13\|217\|185\|-\|-\|-\|-90.15\|-102.74\|-\|-\|-\|97.225 2025-05-07 16:33:33.000000\|128.187194\|32.581963\|21\|96\|-81.92\|15.24\|1199.28\|217\|185\|435\|-\|-\|-89.76\|-102.32\|-111.48\|-\|-\|204.47 2025-05-07 16:33:34.000000\|128.18723\|32.581937\|13\|96\|-79.16\|11.86\|1058.15\|217\|185\|982\|435\|660\|-89.49\|-101.18\|-108.03\|-114.91\|-121.71\|203.55 2025-05-07 16:33:35.000000\|128.187257\|32.581883\|34\|96\|-85.31\|8.49\|1066.42\|217\|185\|982\|498\|330\|-89.22\|-98.53\|-105.78\|-116.86\|-124.92\|206.97 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034036\|14\|128.200576\|32.594672\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033978\|12\|128.195719\|32.588857\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0033317\|14\|128.185208\|32.579657\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0033166\|25\|128.189436\|32.57416\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.189078\|32.580929\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0033317\|13\|128.186903\|32.580639\|0\|0\|6\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033164\|29\|128.185294\|32.581599\|195\|8\|12\|0\|DEFAULT\|31.6\|185\|32T32R\|34.9\|NR AAU 1 0033162\|2\|128.186098\|32.566462\|300\|8\|12\|0\|DEFAULT\|34.0\|106\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.17573\|32.589439\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191853\|32.578751\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033164\|4\|128.186385\|32.584381\|162\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3	C8
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:19:22.000000\|128.191983\|32.583847\|35\|696\|-85.59\|11.39\|870.72\|338\|151\|498\|983\|400\|-98.32\|-100.24\|-119.4\|-124.28\|-130.8\|207.28 2025-05-07 13:19:23.000000\|128.192155\|32.584437\|0\|696\|-85.57\|12.94\|858.79\|338\|151\|983\|400\|498\|-94.26\|-109.17\|-113.99\|-123.97\|-127.8\|205.25 2025-05-07 13:19:24.000000\|128.192068\|32.583828\|36\|696\|-84.98\|9.86\|981.94\|338\|151\|983\|400\|498\|-93.13\|-107.89\|-115.37\|-118.02\|-129.63\|206.9 2025-05-07 13:19:25.000000\|128.192104\|32.583827\|20\|696\|-85.61\|9.52\|378.61\|151\|338\|-\|-\|-\|-88.15\|-104.98\|-\|-\|-\|205.99 2025-05-07 13:19:26.000000\|128.192126\|32.583827\|14\|696\|-85.97\|9.6\|343.93\|151\|338\|-\|-\|-\|-88.16\|-106.94\|-\|-\|-\|200.39 2025-05-07 13:19:27.000000\|128.192133\|32.583827\|21\|338\|-86.59\|10.02\|385.3\|151\|696\|767\|498\|-\|-89.21\|-106.04\|-113.43\|-119.71\|-\|206.48 2025-05-07 13:19:28.000000\|128.192147\|32.583827\|16\|338\|-88.1\|10.78\|368.73\|151\|696\|-\|-\|-\|-91.01\|-103.06\|-\|-\|-\|204.52 2025-05-07 13:19:29.000000\|128.192155\|32.583838\|20\|338\|-84.19\|10.96\|893.89\|696\|151\|498\|-\|-\|-95.62\|-105.32\|-111.93\|-\|-\|204.28 2025-05-07 13:19:30.000000\|128.192162\|32.583846\|23\|338\|-79.65\|13.03\|853.4\|696\|151\|-\|-\|-\|-96.19\|-104.82\|-\|-\|-\|200.8 2025-05-07 13:19:31.000000\|128.192177\|32.583857\|35\|338\|-83.0\|11.29\|804.74\|696\|151\|400\|-\|-\|-96.15\|-102.78\|-113.47\|-\|-\|196.42 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175845\|32.589456\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033918\|29\|128.193585\|32.584492\|180\|11\|9\|0\|DEFAULT\|44.7\|432\|32T32R\|34.9\|NR AAU 3 0033164\|12\|128.19008\|32.583489\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191968\|32.578768\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033918\|24\|128.193637\|32.58222\|350\|4\|12\|0\|DEFAULT\|22.7\|983\|64T64R\|34.9\|NR AAU 2 0033918\|28\|128.193555\|32.584481\|304\|12\|9\|0\|SCENARIO_8\|42.7\|400\|32T32R\|34.9\|NR AAU 1 0033918\|52\|128.192047\|32.582532\|350\|7\|0\|0\|DEFAULT\|18.6\|696\|32T32R\|34.9\|NR AAU 1 0033918\|26\|128.191985\|32.582501\|310\|0\|8\|-15\|SCENARIO_3\|15.4\|338\|64T64R\|34.9\|NR AAU 2 0033984\|1\|128.190497\|32.589411\|230\|10\|255\|0\|DEFAULT\|78.0\|767\|64T64R\|34.9\|NR AAU 2	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:36:52.000000\|128.194661\|32.583809\|12\|432\|-75.56\|5.91\|771.58\|400\|835\|226\|498\|477\|-84.34\|-91.37\|-98.52\|-106.02\|-111.85\|206.73 2025-05-07 13:36:53.000000\|128.194661\|32.58379\|10\|432\|-77.81\|2.58\|927.97\|400\|835\|477\|660\|226\|-76.47\|-88.83\|-104.25\|-104.17\|-115.96\|209.81 2025-05-07 13:36:54.000000\|128.194646\|32.583767\|10\|432\|-77.86\|8.61\|625.93\|400\|835\|477\|498\|660\|-80.34\|-83.03\|-104.6\|-103.9\|-109.11\|195.99 2025-05-07 13:36:55.000000\|128.194639\|32.583736\|6\|432\|-75.42\|10.0\|908.31\|400\|835\|226\|477\|498\|-81.47\|-85.5\|-103.48\|-106.29\|-118.53\|210.48 2025-05-07 13:36:56.000000\|128.194653\|32.583717\|28\|432\|-82.85\|7.78\|1015.59\|400\|835\|226\|477\|660\|-81.05\|-89.02\|-102.55\|-107.21\|-116.39\|211.39 2025-05-07 13:36:57.000000\|128.194667\|32.583697\|36\|835\|-81.98\|9.42\|416.23\|400\|432\|498\|660\|226\|-79.16\|-88.27\|-106.21\|-108.31\|-111.94\|211.12 2025-05-07 13:36:58.000000\|128.194695\|32.583674\|8\|835\|-80.23\|5.6\|411.37\|400\|432\|660\|226\|-\|-81.87\|-85.22\|-102.57\|-109.56\|-\|211.01 2025-05-07 13:36:59.000000\|128.194724\|32.583655\|31\|835\|-89.92\|11.74\|336.89\|432\|400\|391\|160\|660\|-79.99\|-94.19\|-103.46\|-107.76\|-115.36\|200.15 2025-05-07 13:37:00.000000\|128.194767\|32.583635\|37\|835\|-71.49\|23.94\|439.31\|432\|400\|660\|-\|-\|-96.37\|-104.13\|-107.04\|-\|-\|207.5 2025-05-07 13:37:01.000000\|128.194817\|32.583616\|24\|400\|-73.42\|24.91\|1176.49\|432\|835\|160\|-\|-\|-96.71\|-105.52\|-113.31\|-\|-\|206.7 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033918\|29\|128.193952\|32.584545\|140\|11\|9\|0\|DEFAULT\|44.7\|432\|32T32R\|34.9\|NR AAU 3 0033918\|24\|128.194004\|32.582273\|350\|4\|12\|0\|DEFAULT\|22.7\|983\|64T64R\|34.9\|NR AAU 2 0033918\|38\|128.195555\|32.586066\|180\|20\|6\|0\|SCENARIO_12\|15.0\|226\|32T32R\|34.9\|NR AAU 1 0034039\|3\|128.192335\|32.578821\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033918\|25\|128.194004\|32.582273\|215\|2\|255\|0\|DEFAULT\|22.7\|477\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.176213\|32.589509\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0041363\|1\|128.201172\|32.569632\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|160\|8T8R\|46.0\|Other 0033916\|0\|128.226839\|32.581993\|291\|16\|255\|0\|DEFAULT\|63.0\|835\|32T32R\|34.9\|NR AAU 3 0033918\|28\|128.193923\|32.584534\|304\|12\|9\|0\|SCENARIO_8\|42.7\|400\|32T32R\|34.9\|NR AAU 1	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:46:02.000000\|128.196488\|32.582909\|5\|44\|-80.22\|23.32\|1201.11\|113\|432\|660\|441\|-\|-89.37\|-106.73\|-110.65\|-118.97\|-\|210.23 2025-05-07 13:46:03.000000\|128.196492\|32.581988\|39\|44\|-81.9\|21.38\|1030.26\|113\|432\|660\|391\|-\|-87.6\|-105.31\|-112.93\|-121.65\|-\|209.87 2025-05-07 13:46:04.000000\|128.196531\|32.582877\|2\|44\|-79.58\|21.83\|1146.15\|113\|432\|-\|-\|-\|-86.72\|-104.08\|-\|-\|-\|210.44 2025-05-07 13:46:05.000000\|128.19656\|32.582866\|34\|44\|-80.1\|20.45\|1126.38\|113\|432\|-\|-\|-\|-89.11\|-102.74\|-\|-\|-\|208.79 2025-05-07 13:46:06.000000\|128.196595\|32.582847\|30\|44\|-86.21\|17.92\|401.27\|113\|432\|-\|-\|-\|-90.08\|-102.8\|-\|-\|-\|104.81 2025-05-07 13:46:07.000000\|128.196638\|32.582826\|2\|44\|-84.39\|14.09\|333.62\|113\|432\|-\|-\|-\|-87.97\|-100.28\|-\|-\|-\|104.06 2025-05-07 13:46:08.000000\|128.196674\|32.582807\|6\|113\|-88.77\|14.07\|164.76\|44\|432\|-\|-\|-\|-83.1\|-95.39\|-\|-\|-\|93.52 2025-05-07 13:46:09.000000\|128.196709\|32.582784\|3\|113\|-79.5\|13.09\|152.38\|44\|432\|-\|-\|-\|-91.83\|-94.78\|-\|-\|-\|95.45 2025-05-07 13:46:10.000000\|128.196745\|32.582764\|12\|113\|-82.03\|15.03\|767.39\|44\|432\|-\|-\|-\|-92.52\|-100.19\|-\|-\|-\|208.37 2025-05-07 13:46:11.000000\|128.196773\|32.582757\|5\|113\|-87.41\|12.38\|817.97\|44\|432\|-\|-\|-\|-94.86\|-104.6\|-\|-\|-\|201.65 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033980\|38\|128.198691\|32.58956\|295\|12\|6\|0\|SCENARIO_12\|20.0\|13\|64T64R\|34.9\|NR AAU 2 0033916\|0\|128.198694\|32.582261\|291\|16\|255\|0\|DEFAULT\|63.0\|835\|32T32R\|34.9\|NR AAU 3 0033916\|5\|128.198608\|32.582133\|215\|14\|9\|0\|SCENARIO_8\|64.0\|113\|32T32R\|34.9\|NR AAU 1 0033918\|13\|128.197441\|32.586609\|185\|3\|10\|0\|SCENARIO_4\|8.5\|441\|64T64R\|34.9\|NR AAU 2 0033918\|29\|128.194008\|32.584553\|180\|11\|9\|0\|DEFAULT\|44.7\|432\|32T32R\|34.9\|NR AAU 3 0033916\|27\|128.197086\|32.582192\|330\|3\|255\|0\|DEFAULT\|14.0\|44\|32T32R\|34.9\|NR AAU 3	C8
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:31:35.000000\|128.19443\|32.579984\|37\|482\|-85.41\|6.01\|1364.09\|462\|868\|-\|-\|-\|-88.43\|-97.23\|-\|-\|-\|206.16 2025-05-07 11:31:36.000000\|128.19443\|32.579984\|0\|482\|-84.22\|5.41\|1445.58\|462\|868\|-\|-\|-\|-87.99\|-94.85\|-\|-\|-\|205.24 2025-05-07 11:31:37.000000\|128.19443\|32.579984\|31\|482\|-84.26\|4.73\|1235.61\|462\|868\|-\|-\|-\|-87.53\|-95.82\|-\|-\|-\|207.86 2025-05-07 11:31:38.000000\|128.19443\|32.579984\|8\|482\|-85.78\|7.39\|1138.3\|462\|868\|-\|-\|-\|-85.19\|-94.25\|-\|-\|-\|209.85 2025-05-07 11:31:39.000000\|128.19443\|32.579984\|31\|482\|-82.93\|9.32\|1343.73\|462\|868\|-\|-\|-\|-83.57\|-94.32\|-\|-\|-\|209.13 2025-05-07 11:31:40.000000\|128.19443\|32.579984\|6\|482\|-85.32\|6.48\|474.8\|462\|868\|-\|-\|-\|-86.76\|-92.8\|-\|-\|-\|104.5 2025-05-07 11:31:41.000000\|128.19443\|32.579984\|24\|482\|-87.25\|4.8\|544.64\|462\|868\|-\|-\|-\|-88.42\|-93.73\|-\|-\|-\|104.18 2025-05-07 11:31:42.000000\|128.194395\|32.580014\|24\|462\|-86.53\|8.13\|594.68\|482\|868\|-\|-\|-\|-87.54\|-96.77\|-\|-\|-\|103.91 2025-05-07 11:31:43.000000\|128.19443\|32.579984\|28\|462\|-87.63\|11.78\|576.68\|482\|868\|155\|-\|-\|-87.61\|-93.25\|-103.11\|-\|-\|104.445 2025-05-07 11:31:44.000000\|128.19443\|32.579984\|10\|462\|-83.48\|12.15\|1389.74\|482\|868\|155\|-\|-\|-84.15\|-95.21\|-104.31\|-\|-\|208.94 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034036\|14\|128.201034\|32.594738\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033917\|26\|128.194691\|32.579743\|110\|4\|9\|0\|DEFAULT\|24.0\|462\|32T32R\|34.9\|NR AAU 3 0033917\|15\|128.194711\|32.57985\|310\|3\|9\|0\|SCENARIO_9\|24.0\|482\|32T32R\|34.9\|NR AAU 3 0033917\|40\|128.193769\|32.578927\|195\|4\|9\|5\|SCENARIO_8\|21.9\|155\|64T64R\|34.9\|NR AAU 2	C8
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:15:22.000000\|128.186911\|32.584055\|33\|330\|-91.8\|21.51\|677.76\|591\|660\|597\|-\|-\|-110.7\|-119.62\|-134.44\|-\|-\|208.83 2025-05-07 14:15:23.000000\|128.186911\|32.584055\|16\|330\|-92.69\|22.17\|1126.34\|591\|660\|-\|-\|-\|-109.35\|-119.19\|-\|-\|-\|206.41 2025-05-07 14:15:24.000000\|128.185869\|32.585626\|36\|330\|-90.31\|22.08\|270.69\|591\|660\|-\|-\|-\|-112.19\|-116.31\|-\|-\|-\|204.41 2025-05-07 14:15:25.000000\|128.186911\|32.584055\|27\|330\|-91.04\|21.48\|338.15\|591\|660\|-\|-\|-\|-109.61\|-117.13\|-\|-\|-\|197.54 2025-05-07 14:15:26.000000\|128.186911\|32.584055\|0\|591\|-87.68\|21.67\|331.24\|330\|660\|-\|-\|-\|-104.46\|-112.38\|-\|-\|-\|195.74 2025-05-07 14:15:27.000000\|128.186911\|32.584055\|10\|591\|-83.41\|23.7\|400.83\|330\|660\|597\|-\|-\|-104.16\|-111.95\|-121.17\|-\|-\|198.45 2025-05-07 14:15:28.000000\|128.186911\|32.584055\|22\|591\|-86.05\|23.04\|915.3\|330\|660\|597\|-\|-\|-104.7\|-111.95\|-125.18\|-\|-\|196.95 2025-05-07 14:15:29.000000\|128.186911\|32.584055\|4\|591\|-84.59\|22.07\|838.15\|330\|660\|-\|-\|-\|-106.53\|-112.75\|-\|-\|-\|182.99 2025-05-07 14:15:30.000000\|128.186911\|32.584055\|22\|591\|-85.38\|22.3\|825.33\|330\|660\|-\|-\|-\|-106.17\|-110.82\|-\|-\|-\|194.47 2025-05-07 14:15:31.000000\|128.186911\|32.584055\|12\|591\|-85.94\|23.97\|624.83\|330\|660\|-\|-\|-\|-105.82\|-113.24\|-\|-\|-\|200.84 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|340\|20\|9\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C1
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:11:42.000000\|128.187027\|32.582075\|23\|217\|-83.75\|13.15\|1200.17\|96\|185\|71\|106\|498\|-101.79\|-106.06\|-112.11\|-119.76\|-121.04\|210.67 2025-05-07 15:11:43.000000\|128.187041\|32.582075\|20\|217\|-80.35\|13.02\|1183.75\|96\|185\|498\|660\|265\|-100.3\|-107.12\|-113.52\|-118.97\|-124.2\|210.86 2025-05-07 15:11:44.000000\|128.187049\|32.582086\|18\|217\|-84.21\|11.15\|959.79\|96\|185\|498\|265\|660\|-96.66\|-106.59\|-112.56\|-119.2\|-127.46\|211.18 2025-05-07 15:11:45.000000\|128.187056\|32.582098\|21\|217\|-84.65\|10.93\|951.47\|96\|185\|-\|-\|-\|-94.06\|-109.01\|-\|-\|-\|210.71 2025-05-07 15:11:46.000000\|128.187063\|32.582117\|15\|217\|-84.85\|8.23\|417.25\|96\|185\|71\|660\|-\|-91.96\|-107.04\|-110.67\|-117.84\|-\|104.9 2025-05-07 15:11:47.000000\|128.187085\|32.582125\|1\|217\|-86.51\|6.94\|400.74\|96\|185\|-\|-\|-\|-89.88\|-101.89\|-\|-\|-\|105.13 2025-05-07 15:11:48.000000\|128.187093\|32.582136\|34\|96\|-89.35\|9.42\|466.05\|217\|185\|265\|-\|-\|-93.07\|-103.99\|-110.11\|-\|-\|105.195 2025-05-07 15:11:49.000000\|128.187093\|32.582136\|10\|96\|-84.33\|11.95\|423.05\|217\|185\|-\|-\|-\|-94.73\|-98.2\|-\|-\|-\|105.345 2025-05-07 15:11:50.000000\|128.187093\|32.582136\|23\|96\|-83.09\|9.39\|884.29\|217\|185\|-\|-\|-\|-92.16\|-103.03\|-\|-\|-\|210.0 2025-05-07 15:11:51.000000\|128.187093\|32.582136\|14\|96\|-86.55\|7.75\|993.62\|217\|185\|-\|-\|-\|-90.79\|-102.97\|-\|-\|-\|210.15 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033978\|12\|128.195732\|32.588859\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0034036\|14\|128.200589\|32.594674\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033166\|25\|128.189449\|32.574162\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.189091\|32.580931\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0033162\|2\|128.186111\|32.566464\|300\|8\|12\|0\|DEFAULT\|34.0\|106\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191866\|32.578753\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.175743\|32.589441\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033317\|14\|128.185221\|32.579659\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0033317\|13\|128.186916\|32.580641\|0\|5\|0\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033164\|29\|128.185307\|32.581601\|195\|8\|12\|0\|DEFAULT\|31.6\|185\|32T32R\|34.9\|NR AAU 1	C8
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:34:02.000000\|128.191321\|32.58735\|22\|418\|-85.62\|12.17\|613.68\|333\|480\|-\|-\|-\|-100.43\|-106.18\|-\|-\|-\|185.2 2025-05-07 13:34:03.000000\|128.191321\|32.58735\|21\|418\|-87.41\|12.8\|683.69\|333\|480\|-\|-\|-\|-101.9\|-108.38\|-\|-\|-\|201.82 2025-05-07 13:34:04.000000\|128.191321\|32.58735\|10\|418\|-86.43\|12.51\|696.36\|333\|480\|-\|-\|-\|-101.84\|-107.79\|-\|-\|-\|205.17 2025-05-07 13:34:05.000000\|128.191321\|32.58735\|33\|418\|-86.23\|13.1\|1118.61\|333\|480\|-\|-\|-\|-103.29\|-108.55\|-\|-\|-\|199.4 2025-05-07 13:34:06.000000\|128.191321\|32.58735\|4\|418\|-87.78\|13.17\|284.04\|333\|480\|-\|-\|-\|-90.21\|-105.95\|-\|-\|-\|208.44 2025-05-07 13:34:07.000000\|128.191321\|32.58735\|3\|418\|-87.17\|13.86\|215.69\|333\|480\|-\|-\|-\|-90.99\|-106.36\|-\|-\|-\|190.77 2025-05-07 13:34:08.000000\|128.191321\|32.58735\|32\|333\|-87.2\|15.04\|453.74\|418\|480\|-\|-\|-\|-90.47\|-107.69\|-\|-\|-\|193.35 2025-05-07 13:34:09.000000\|128.191321\|32.58735\|14\|333\|-88.75\|13.71\|486.62\|418\|480\|-\|-\|-\|-92.61\|-108.85\|-\|-\|-\|190.95 2025-05-07 13:34:10.000000\|128.191321\|32.58735\|26\|333\|-82.52\|11.93\|668.77\|418\|480\|-\|-\|-\|-99.57\|-105.69\|-\|-\|-\|202.03 2025-05-07 13:34:11.000000\|128.191321\|32.58735\|29\|333\|-85.66\|11.49\|687.36\|418\|480\|-\|-\|-\|-100.52\|-106.29\|-\|-\|-\|189.34 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033984\|4\|128.190504\|32.589435\|130\|10\|255\|0\|DEFAULT\|78.0\|480\|64T64R\|34.9\|NR AAU 2 0033984\|24\|128.190914\|32.590683\|160\|10\|255\|0\|DEFAULT\|64.0\|94\|32T32R\|34.9\|NR AAU 3 0033237\|17\|128.191856\|32.587807\|220\|15\|11\|-10\|SCENARIO_4\|51.3\|418\|32T32R\|34.9\|NR AAU 3 0033237\|15\|128.190601\|32.586624\|170\|1\|12\|0\|DEFAULT\|25.5\|333\|32T32R\|34.9\|NR AAU 1	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:40:02.000000\|128.189766\|32.585629\|13\|333\|-77.91\|16.95\|706.88\|596\|151\|134\|400\|-\|-100.04\|-102.77\|-110.79\|-119.61\|-\|211.06 2025-05-07 14:40:03.000000\|128.189823\|32.585618\|38\|333\|-79.93\|15.74\|845.13\|596\|151\|-\|-\|-\|-95.6\|-101.7\|-\|-\|-\|211.41 2025-05-07 14:40:04.000000\|128.189859\|32.585609\|13\|333\|-76.87\|13.09\|1192.68\|596\|151\|-\|-\|-\|-93.89\|-97.24\|-\|-\|-\|210.99 2025-05-07 14:40:05.000000\|128.189888\|32.585598\|10\|333\|-77.08\|15.54\|1255.05\|596\|151\|868\|400\|-\|-90.88\|-99.37\|-105.08\|-110.39\|-\|211.06 2025-05-07 14:40:06.000000\|128.189895\|32.585579\|2\|333\|-76.66\|17.01\|1260.93\|596\|151\|660\|-\|-\|-88.55\|-100.02\|-102.39\|-\|-\|211.09 2025-05-07 14:40:07.000000\|128.189902\|32.585567\|12\|333\|-75.08\|15.09\|416.45\|596\|151\|660\|-\|-\|-87.39\|-102.05\|-106.05\|-\|-\|210.94 2025-05-07 14:40:08.000000\|128.189895\|32.58556\|1\|596\|-82.35\|10.48\|464.35\|333\|151\|660\|480\|868\|-85.93\|-99.61\|-106.21\|-114.35\|-116.25\|210.8 2025-05-07 14:40:09.000000\|128.189895\|32.585548\|20\|333\|-86.09\|9.96\|352.9\|596\|151\|660\|400\|-\|-84.39\|-96.73\|-105.48\|-108.38\|-\|198.61 2025-05-07 14:40:10.000000\|128.189895\|32.585537\|26\|596\|-81.29\|11.03\|350.59\|333\|151\|400\|-\|-\|-92.72\|-99.85\|-112.92\|-\|-\|207.53 2025-05-07 14:40:11.000000\|128.189895\|32.585529\|25\|596\|-83.72\|8.77\|921.27\|333\|151\|-\|-\|-\|-93.42\|-100.62\|-\|-\|-\|211.25 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033237\|4\|128.188178\|32.585893\|110\|1\|10\|0\|SCENARIO_3\|18.6\|596\|32T32R\|34.9\|NR AAU 3 0000293\|0\|128.175837\|32.589455\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033237\|15\|128.190561\|32.586618\|200\|11\|0\|0\|DEFAULT\|25.5\|333\|32T32R\|34.9\|NR AAU 1 0033166\|5\|128.19274\|32.577305\|10\|5\|255\|0\|DEFAULT\|23.0\|134\|64T64R\|34.9\|NR AAU 2 0033918\|28\|128.193547\|32.58448\|304\|12\|9\|0\|SCENARIO_8\|42.7\|400\|32T32R\|34.9\|NR AAU 1 0033164\|12\|128.190071\|32.583488\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0034036\|14\|128.200682\|32.594688\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033984\|4\|128.190464\|32.58943\|130\|10\|255\|0\|DEFAULT\|78.0\|480\|64T64R\|34.9\|NR AAU 2	C5
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 13:17:12.000000\|128.189139\|32.581204\|2\|129\|-72.15\|28.0\|1376.03\|307\|660\|-\|-\|-\|-98.4\|-104.62\|-\|-\|-\|210.27 2025-05-07 13:17:13.000000\|128.18911\|32.581216\|34\|129\|-72.48\|27.83\|1449.05\|307\|660\|-\|-\|-\|-91.88\|-103.77\|-\|-\|-\|211.07 2025-05-07 13:17:14.000000\|128.189088\|32.581223\|36\|129\|-72.76\|25.9\|1447.92\|307\|660\|-\|-\|-\|-97.65\|-105.98\|-\|-\|-\|211.16 2025-05-07 13:17:15.000000\|128.18906\|32.581236\|1\|129\|-80.87\|27.01\|1548.05\|307\|660\|-\|-\|-\|-99.76\|-107.37\|-\|-\|-\|211.19 2025-05-07 13:17:16.000000\|128.189039\|32.581266\|66\|129\|-80.44\|27.59\|615.7\|307\|660\|-\|-\|-\|-102.07\|-106.26\|-\|-\|-\|210.93 2025-05-07 13:17:17.000000\|128.189039\|32.581285\|74\|129\|-84.0\|19.87\|575.25\|307\|660\|71\|-\|-\|-102.68\|-105.27\|-111.78\|-\|-\|211.16 2025-05-07 13:17:18.000000\|128.189047\|32.581327\|42\|307\|-86.53\|18.41\|588.41\|129\|660\|868\|71\|151\|-102.82\|-107.44\|-113.34\|-119.23\|-145.06\|211.02 2025-05-07 13:17:19.000000\|128.189062\|32.581358\|48\|307\|-81.98\|19.84\|571.78\|129\|660\|868\|-\|-\|-100.09\|-109.03\|-115.39\|-\|-\|211.13 2025-05-07 13:17:20.000000\|128.189076\|32.581396\|12\|307\|-83.86\|16.55\|1422.83\|129\|660\|868\|71\|-\|-102.62\|-107.16\|-113.52\|-119.86\|-\|211.03 2025-05-07 13:17:21.000000\|128.189099\|32.581445\|29\|307\|-88.38\|14.22\|1212.64\|129\|660\|71\|982\|-\|-104.56\|-111.47\|-116.52\|-117.34\|-\|211.08 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|24\|128.188912\|32.58177\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1 0033164\|27\|128.189108\|32.580933\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034036\|14\|128.200606\|32.594677\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033164\|14\|128.189156\|32.580996\|330\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.17576\|32.589444\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|12\|128.189995\|32.583477\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033164\|26\|128.189127\|32.580977\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:46:32.000000\|128.187306\|32.579243\|1\|712\|-84.84\|2.7199999999999998\|887.68\|832\|764\|-\|-\|-\|-88.32\|-93.93\|-\|-\|-\|206.87 2025-05-07 14:46:33.000000\|128.187314\|32.579266\|4\|712\|-85.33\|0.05\|986.55\|832\|764\|868\|129\|-\|-91.26\|-93.94\|-98.87\|-109.87\|-\|210.66 2025-05-07 14:46:34.000000\|128.187321\|32.579297\|5\|712\|-84.46\|-0.67\|336.67\|832\|764\|-\|-\|-\|-89.49\|-92.97\|-\|-\|-\|210.34 2025-05-07 14:46:35.000000\|128.187335\|32.579315\|19\|712\|-84.99\|-0.43\|330.82\|832\|764\|-\|-\|-\|-87.8\|-96.1\|-\|-\|-\|209.2 2025-05-07 14:46:36.000000\|128.187343\|32.579345\|29\|832\|-87.13\|-1.6800000000000002\|416.78\|712\|764\|868\|720\|368\|-88.14\|-94.37\|-96.91\|-101.55\|-107.59\|210.23 2025-05-07 14:46:37.000000\|128.187351\|32.579372\|23\|832\|-82.35\|2.8200000000000003\|366.09\|712\|764\|-\|-\|-\|-88.01\|-95.6\|-\|-\|-\|210.32 2025-05-07 14:46:38.000000\|128.187366\|32.579403\|1\|832\|-84.76\|-1.51\|902.52\|712\|764\|-\|-\|-\|-89.71\|-93.78\|-\|-\|-\|210.28 2025-05-07 14:46:39.000000\|128.187374\|32.579433\|30\|832\|-84.84\|-0.30000000000000004\|1205.23\|712\|764\|868\|368\|284\|-88.66\|-93.94\|-97.98\|-103.08\|-111.11\|210.47 2025-05-07 14:46:40.000000\|128.187381\|32.579464\|18\|832\|-86.79\|-0.03\|977.11\|712\|764\|868\|368\|284\|-90.5\|-94.84\|-98.05\|-107.61\|-110.84\|189.96 2025-05-07 14:46:41.000000\|128.187381\|32.579483\|10\|832\|-84.11\|3.22\|1050.61\|712\|764\|868\|284\|129\|-89.54\|-93.63\|-102.58\|-104.15\|-116.52\|202.98 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|3\|128.188718\|32.577206\|183\|11\|4\|-20\|SCENARIO_9\|36.2\|61\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191896\|32.578758\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0034038\|2\|128.18797\|32.579054\|140\|10\|4\|0\|DEFAULT\|5.0\|1090\|64T64R\|34.9\|NR AAU 2 0034038\|4\|128.187961\|32.579084\|290\|1\|4\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0033166\|5\|128.192677\|32.577296\|10\|5\|255\|0\|DEFAULT\|23.0\|134\|64T64R\|34.9\|NR AAU 2 0033164\|14\|128.18917\|32.580998\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033317\|16\|128.18691\|32.580702\|217\|2\|13\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0034038\|24\|128.187378\|32.577865\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033164\|24\|128.188925\|32.581772\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1	C6
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:06:42.000000\|128.187466\|32.582598\|3\|217\|-81.42\|8.52\|902.47\|96\|71\|-\|-\|-\|-91.22\|-97.95\|-\|-\|-\|205.11 2025-05-07 15:06:43.000000\|128.187466\|32.582598\|29\|217\|-79.04\|9.61\|1084.38\|96\|71\|-\|-\|-\|-90.29\|-97.37\|-\|-\|-\|211.01 2025-05-07 15:06:44.000000\|128.187466\|32.582605\|28\|217\|-77.63\|10.1\|990.08\|96\|71\|868\|-\|-\|-90.13\|-99.02\|-104.14\|-\|-\|210.83 2025-05-07 15:06:45.000000\|128.187466\|32.582605\|29\|217\|-81.16\|8.41\|943.16\|96\|71\|-\|-\|-\|-89.37\|-100.65\|-\|-\|-\|211.27 2025-05-07 15:06:46.000000\|128.187466\|32.582605\|9\|217\|-85.29\|6.78\|905.86\|96\|71\|-\|-\|-\|-89.22\|-101.81\|-\|-\|-\|211.21 2025-05-07 15:06:47.000000\|128.187466\|32.582617\|5\|71\|-80.56\|5.58\|352.71\|96\|217\|660\|868\|-\|-90.96\|-97.95\|-105.79\|-112.32\|-\|211.19 2025-05-07 15:06:48.000000\|128.187466\|32.582617\|22\|71\|-89.13\|2.74\|348.3\|96\|217\|660\|435\|-\|-89.02\|-98.21\|-104.42\|-112.21\|-\|211.18 2025-05-07 15:06:49.000000\|128.187466\|32.582617\|20\|71\|-87.67\|4.21\|399.78\|217\|96\|868\|660\|-\|-90.54\|-96.6\|-99.77\|-105.91\|-\|211.18 2025-05-07 15:06:50.000000\|128.187466\|32.582617\|11\|71\|-86.01\|6.1\|407.15\|217\|96\|435\|-\|-\|-93.17\|-100.3\|-105.45\|-\|-\|211.32 2025-05-07 15:06:51.000000\|128.187466\|32.582617\|29\|96\|-80.19\|7.73\|1043.28\|217\|71\|-\|-\|-\|-94.47\|-99.61\|-\|-\|-\|211.07 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033166\|25\|128.189726\|32.574202\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.17602\|32.589481\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033317\|13\|128.187193\|32.580681\|10\|4\|0\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033317\|14\|128.185498\|32.579699\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0034036\|14\|128.200866\|32.594714\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033978\|12\|128.196009\|32.588899\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0033164\|27\|128.217568\|32.580711\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:01:42.000000\|128.186012\|32.581026\|8\|764\|-85.74\|19.55\|1288.9\|217\|185\|106\|-\|-\|-93.33\|-99.33\|-111.86\|-\|-\|211.45 2025-05-07 15:01:43.000000\|128.186048\|32.581045\|71\|764\|-85.4\|20.22\|523.93\|217\|185\|-\|-\|-\|-89.33\|-100.53\|-\|-\|-\|211.23 2025-05-07 15:01:44.000000\|128.186084\|32.581076\|50\|764\|-86.87\|16.23\|450.87\|217\|185\|-\|-\|-\|-86.98\|-104.22\|-\|-\|-\|211.37 2025-05-07 15:01:45.000000\|128.186113\|32.581087\|65\|217\|-87.34\|17.29\|475.49\|764\|185\|-\|-\|-\|-87.18\|-101.97\|-\|-\|-\|211.19 2025-05-07 15:01:46.000000\|128.186135\|32.581094\|44\|217\|-86.39\|17.5\|485.32\|764\|185\|-\|-\|-\|-88.65\|-107.42\|-\|-\|-\|210.91 2025-05-07 15:01:47.000000\|128.186142\|32.581105\|31\|217\|-83.71\|17.05\|1214.89\|764\|185\|-\|-\|-\|-87.32\|-103.16\|-\|-\|-\|210.81 2025-05-07 15:01:48.000000\|128.186157\|32.581105\|34\|217\|-80.56\|20.05\|1278.44\|764\|185\|-\|-\|-\|-84.65\|-103.25\|-\|-\|-\|211.5 2025-05-07 15:01:49.000000\|128.186163\|32.581105\|2\|217\|-82.43\|17.62\|1143.99\|764\|185\|-\|-\|-\|-86.24\|-105.63\|-\|-\|-\|211.27 2025-05-07 15:01:50.000000\|128.186171\|32.581094\|9\|217\|-85.74\|16.73\|1271.78\|764\|185\|-\|-\|-\|-84.46\|-106.94\|-\|-\|-\|211.42 2025-05-07 15:01:51.000000\|128.186192\|32.581094\|27\|217\|-83.66\|17.82\|1259.53\|764\|185\|-\|-\|-\|-86.23\|-106.4\|-\|-\|-\|211.01 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033978\|12\|128.195584\|32.588838\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0033317\|13\|128.186768\|32.580619\|5\|5\|6\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033164\|29\|128.185159\|32.58158\|195\|8\|12\|0\|DEFAULT\|31.6\|185\|32T32R\|34.9\|NR AAU 1 0033162\|2\|128.185963\|32.566443\|300\|8\|12\|0\|DEFAULT\|34.0\|106\|64T64R\|34.9\|NR AAU 2 0033317\|16\|128.186731\|32.580677\|300\|11\|0\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0033317\|14\|128.185073\|32.579638\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0000590\|53\|128.177802\|32.597536\|0\|0\|255\|0\|DEFAULT\|0.0\|720\|4T4R\|46.0\|Other	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:25:36.000000\|128.187325\|32.577132\|10\|729\|-73.15\|17.67\|943.43\|394\|481\|-\|-\|-\|-80.48\|-96.34\|-\|-\|-\|203.61 2025-05-07 16:25:37.000000\|128.187317\|32.577075\|30\|729\|-76.45\|16.63\|793.62\|394\|481\|-\|-\|-\|-82.22\|-98.85\|-\|-\|-\|193.92 2025-05-07 16:25:38.000000\|128.187288\|32.577014\|30\|729\|-80.48\|11.58\|1006.87\|394\|481\|-\|-\|-\|-80.63\|-93.74\|-\|-\|-\|188.36 2025-05-07 16:25:39.000000\|128.187258\|32.576953\|13\|729\|-81.41\|17.12\|300.38\|394\|481\|-\|-\|-\|-79.8\|-98.34\|-\|-\|-\|205.92 2025-05-07 16:25:40.000000\|128.187222\|32.576874\|26\|729\|-80.73\|10.75\|264.49\|394\|481\|-\|-\|-\|-82.7\|-94.59\|-\|-\|-\|200.11 2025-05-07 16:25:41.000000\|128.188315\|32.576554\|34\|394\|-88.89\|8.43\|497.9\|729\|481\|-\|-\|-\|-89.05\|-99.2\|-\|-\|-\|200.16 2025-05-07 16:25:42.000000\|128.187169\|32.576744\|39\|394\|-85.17\|10.3\|457.84\|729\|481\|-\|-\|-\|-89.65\|-99.93\|-\|-\|-\|171.17 2025-05-07 16:25:43.000000\|128.187155\|32.576694\|36\|394\|-88.03\|9.15\|676.51\|729\|481\|170\|709\|357\|-96.38\|-101.44\|-106.96\|-112.66\|-122.97\|202.61 2025-05-07 16:25:44.000000\|128.187126\|32.576645\|23\|394\|-86.4\|10.87\|774.07\|729\|481\|170\|284\|732\|-93.74\|-99.56\|-106.66\|-114.48\|-118.19\|206.31 2025-05-07 16:25:45.000000\|128.18709\|32.576615\|18\|394\|-88.0\|10.75\|836.62\|729\|481\|507\|357\|170\|-90.11\|-101.31\|-108.05\|-119.78\|-124.26\|204.89 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|28\|128.186758\|32.57687\|70\|8\|255\|0\|DEFAULT\|24.0\|729\|64T64R\|34.9\|NR AAU 2 0034038\|27\|128.18869\|32.577204\|260\|15\|6\|0\|DEFAULT\|35.2\|732\|32T32R\|34.9\|NR AAU 3 0033286\|58\|128.187109\|32.574817\|320\|9\|13\|0\|DEFAULT\|24.0\|481\|32T32R\|34.9\|NR AAU 1 0034038\|26\|128.186786\|32.576813\|240\|19\|6\|0\|SCENARIO_7\|28.0\|394\|32T32R\|34.9\|NR AAU 1 0034038\|0\|128.18743\|32.577968\|179\|41\|13\|0\|DEFAULT\|56.0\|357\|64T64R\|34.9\|NR AAU 2 0034039\|4\|128.192305\|32.578727\|255\|20\|255\|0\|DEFAULT\|111.0\|656\|64T64R\|34.9\|NR AAU 2 0033166\|26\|128.190492\|32.575416\|230\|17\|4\|20\|SCENARIO_4\|48.1\|170\|64T64R\|34.9\|NR AAU 2 0034038\|24\|128.187331\|32.577858\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033286\|62\|128.187109\|32.574817\|140\|0\|6\|20\|SCENARIO_13\|20.0\|507\|32T32R\|34.9\|NR AAU 1	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 15:14:22.000000\|128.187332\|32.582315\|35\|217\|-88.34\|20.17\|1188.72\|96\|185\|-\|-\|-\|-106.23\|-110.75\|-\|-\|-\|211.03 2025-05-07 15:14:23.000000\|128.187332\|32.582315\|12\|217\|-87.16\|20.2\|1086.81\|96\|185\|-\|-\|-\|-105.05\|-109.72\|-\|-\|-\|210.77 2025-05-07 15:14:24.000000\|128.187332\|32.582315\|34\|217\|-86.4\|20.07\|1025.33\|96\|185\|-\|-\|-\|-107.06\|-110.67\|-\|-\|-\|210.52 2025-05-07 15:14:25.000000\|128.187332\|32.582315\|70\|217\|-89.25\|20.07\|365.2\|96\|185\|-\|-\|-\|-105.08\|-112.42\|-\|-\|-\|210.58 2025-05-07 15:14:26.000000\|128.187332\|32.582315\|74\|217\|-86.1\|20.05\|341.75\|96\|185\|-\|-\|-\|-106.15\|-113.92\|-\|-\|-\|210.54 2025-05-07 15:14:27.000000\|128.187332\|32.582315\|59\|96\|-88.04\|20.14\|377.71\|217\|185\|227\|-\|-\|-106.26\|-113.2\|-128.65\|-\|-\|210.93 2025-05-07 15:14:28.000000\|128.187332\|32.582315\|65\|96\|-86.55\|20.36\|407.75\|217\|185\|-\|-\|-\|-105.53\|-111.76\|-\|-\|-\|209.98 2025-05-07 15:14:29.000000\|128.187332\|32.582315\|1\|96\|-89.48\|20.58\|772.66\|217\|185\|-\|-\|-\|-106.35\|-113.04\|-\|-\|-\|193.0 2025-05-07 15:14:30.000000\|128.187332\|32.582315\|14\|96\|-87.2\|20.51\|799.28\|217\|185\|-\|-\|-\|-105.36\|-113.22\|-\|-\|-\|211.02 2025-05-07 15:14:31.000000\|128.187332\|32.582315\|20\|96\|-89.01\|20.51\|976.53\|217\|185\|-\|-\|-\|-106.83\|-112.78\|-\|-\|-\|210.85 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033978\|12\|128.195688\|32.588853\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0034036\|14\|128.200545\|32.594668\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033317\|14\|128.185177\|32.579653\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0033164\|29\|128.185263\|32.581595\|195\|8\|12\|0\|DEFAULT\|31.6\|185\|32T32R\|34.9\|NR AAU 1 0033162\|2\|128.186067\|32.566458\|300\|8\|12\|0\|DEFAULT\|34.0\|106\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.175699\|32.589435\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033317\|13\|128.186872\|32.580634\|10\|5\|0\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:45:32.000000\|128.188445\|32.580032\|5\|71\|-76.17\|15.46\|1007.61\|307\|712\|-\|-\|-\|-87.33\|-93.93\|-\|-\|-\|210.08 2025-05-07 14:45:33.000000\|128.18843\|32.579983\|36\|71\|-77.69\|14.73\|999.59\|307\|712\|368\|284\|-\|-88.64\|-95.14\|-107.65\|-117.36\|-\|209.82 2025-05-07 14:45:34.000000\|128.188401\|32.579925\|34\|71\|-76.68\|10.64\|943.44\|307\|712\|-\|-\|-\|-86.5\|-90.86\|-\|-\|-\|211.22 2025-05-07 14:45:35.000000\|128.188378\|32.579865\|15\|71\|-77.13\|10.3\|912.66\|307\|712\|-\|-\|-\|-86.84\|-89.62\|-\|-\|-\|209.44 2025-05-07 14:45:36.000000\|128.188363\|32.579804\|11\|71\|-79.22\|8.57\|861.82\|307\|712\|-\|-\|-\|-81.04\|-88.48\|-\|-\|-\|207.86 2025-05-07 14:45:37.000000\|128.188341\|32.579755\|19\|71\|-83.17\|7.11\|262.31\|712\|307\|129\|284\|-\|-77.99\|-87.06\|-93.41\|-113.42\|-\|207.88 2025-05-07 14:45:38.000000\|128.188333\|32.579716\|19\|71\|-80.23\|2.95\|319.87\|712\|307\|284\|258\|-\|-82.55\|-90.55\|-110.24\|-111.41\|-\|209.43 2025-05-07 14:45:39.000000\|128.188311\|32.579686\|5\|307\|-87.17\|4.18\|198.27\|712\|71\|284\|258\|-\|-87.2\|-89.42\|-102.95\|-117.85\|-\|207.41 2025-05-07 14:45:40.000000\|128.188311\|32.579667\|12\|307\|-87.23\|2.87\|283.13\|712\|71\|284\|258\|-\|-87.96\|-91.69\|-103.61\|-116.86\|-\|211.09 2025-05-07 14:45:41.000000\|128.188304\|32.579644\|35\|307\|-85.71\|6.26\|911.91\|71\|712\|284\|258\|-\|-86.63\|-95.02\|-106.39\|-110.21\|-\|210.88 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|14\|128.189134\|32.580993\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.189086\|32.58093\|200\|1\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034038\|4\|128.187926\|32.579079\|30\|8\|4\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0033164\|26\|128.189105\|32.580974\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1 0034038\|2\|128.187935\|32.579049\|140\|10\|4\|0\|DEFAULT\|5.0\|258\|64T64R\|34.9\|NR AAU 2 0033164\|24\|128.188889\|32.581767\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1 0034038\|24\|128.187343\|32.57786\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:21:22.000000\|128.186911\|32.584055\|5\|330\|-88.89\|23.99\|910.24\|591\|660\|597\|-\|-\|-108.46\|-114.13\|-121.7\|-\|-\|205.46 2025-05-07 14:21:23.000000\|128.186911\|32.584055\|27\|330\|-89.36\|24.9\|902.26\|591\|660\|597\|-\|-\|-107.7\|-114.35\|-125.38\|-\|-\|207.8 2025-05-07 14:21:24.000000\|128.185869\|32.585626\|9\|330\|-87.0\|24.09\|782.18\|591\|660\|597\|-\|-\|-108.21\|-117.02\|-123.07\|-\|-\|198.74 2025-05-07 14:21:25.000000\|128.186911\|32.584055\|14\|330\|-89.02\|24.2\|866.73\|591\|660\|597\|-\|-\|-108.78\|-118.51\|-123.08\|-\|-\|206.74 2025-05-07 14:21:26.000000\|128.186911\|32.584055\|22\|660\|-89.33\|24.58\|360.01\|591\|330\|597\|-\|-\|-110.69\|-117.2\|-123.87\|-\|-\|207.83 2025-05-07 14:21:27.000000\|128.186911\|32.584055\|22\|660\|-85.93\|23.51\|348.49\|591\|330\|597\|-\|-\|-109.36\|-116.58\|-122.59\|-\|-\|202.36 2025-05-07 14:21:28.000000\|128.186911\|32.584055\|15\|660\|-85.11\|23.68\|347.63\|330\|591\|597\|-\|-\|-108.73\|-116.33\|-121.83\|-\|-\|206.61 2025-05-07 14:21:29.000000\|128.186911\|32.584055\|33\|660\|-85.34\|24.27\|326.91\|330\|591\|597\|-\|-\|-110.65\|-117.25\|-123.82\|-\|-\|201.3 2025-05-07 14:21:30.000000\|128.186911\|32.584055\|29\|591\|-84.6\|24.55\|849.27\|330\|660\|597\|-\|-\|-110.11\|-117.76\|-122.16\|-\|-\|202.67 2025-05-07 14:21:31.000000\|128.186911\|32.584055\|21\|591\|-88.44\|24.61\|827.11\|330\|660\|597\|-\|-\|-109.49\|-118.24\|-125.74\|-\|-\|206.82 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.203985\|32.589187\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186986\|32.585957\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18644\|32.584389\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179948\|32.574116\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:11:05.000000\|128.189324\|32.579635\|11\|712\|-83.03\|4.63\|629.97\|284\|71\|-\|-\|-\|-92.99\|-98.41\|-\|-\|-\|210.81 2025-05-07 11:11:06.000000\|128.189295\|32.579605\|23\|712\|-84.64\|3.96\|735.48\|284\|71\|-\|-\|-\|-92.5\|-99.46\|-\|-\|-\|210.74 2025-05-07 11:11:07.000000\|128.189266\|32.579574\|6\|712\|-85.2\|2.39\|611.51\|284\|71\|732\|307\|709\|-91.96\|-99.02\|-103.45\|-108.83\|-111.53\|210.98 2025-05-07 11:11:08.000000\|128.189244\|32.579563\|1\|712\|-82.92\|3.41\|257.52\|284\|71\|307\|732\|719\|-87.55\|-97.7\|-98.75\|-105.97\|-115.13\|210.37 2025-05-07 11:11:09.000000\|128.18923\|32.579544\|37\|712\|-87.31\|3.66\|284.99\|284\|71\|-\|-\|-\|-84.7\|-93.16\|-\|-\|-\|210.66 2025-05-07 11:11:10.000000\|128.189208\|32.579514\|26\|284\|-89.58\|1.08\|453.74\|712\|71\|498\|129\|307\|-85.24\|-89.91\|-98.95\|-100.84\|-114.12\|191.35 2025-05-07 11:11:11.000000\|128.189186\|32.579484\|35\|284\|-82.89\|-4.13\|413.57\|712\|71\|129\|732\|709\|-80.61\|-90.84\|-99.67\|-111.96\|-114.46\|179.42 2025-05-07 11:11:12.000000\|128.189172\|32.579453\|25\|284\|-84.45\|3.68\|1031.4\|712\|71\|-\|-\|-\|-78.09\|-88.41\|-\|-\|-\|174.8 2025-05-07 11:11:13.000000\|128.189156\|32.579427\|38\|284\|-73.99\|8.01\|876.62\|712\|71\|732\|129\|719\|-85.56\|-90.92\|-99.66\|-105.1\|-111.24\|207.82 2025-05-07 11:11:14.000000\|128.189142\|32.579404\|20\|284\|-69.68\|11.04\|659.5\|712\|71\|732\|-\|-\|-80.72\|-91.15\|-102.95\|-\|-\|204.7 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|14\|128.189246\|32.581009\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.189199\|32.580946\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0033164\|26\|128.189218\|32.58099\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1 0034038\|24\|128.187455\|32.577876\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0034036\|14\|128.200696\|32.59469\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0034038\|5\|128.188795\|32.577217\|39\|15\|9\|10\|SCENARIO_2\|36.2\|719\|64T64R\|34.9\|NR AAU 2 0034038\|27\|128.188814\|32.577222\|260\|15\|6\|0\|DEFAULT\|35.2\|732\|32T32R\|34.9\|NR AAU 3 0034039\|3\|128.191973\|32.578769\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0034038\|4\|128.188038\|32.579095\|60\|2\|0\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:38:22.000000\|128.188356\|32.585295\|34\|596\|-78.86\|4.67\|859.93\|502\|591\|330\|767\|160\|-81.74\|-92.96\|-100.52\|-102.02\|-107.47\|202.51 2025-05-07 14:38:23.000000\|128.188312\|32.585307\|2\|596\|-81.37\|2.7800000000000002\|805.62\|502\|591\|767\|151\|160\|-82.17\|-89.22\|-95.16\|-105.45\|-110.61\|182.82 2025-05-07 14:38:24.000000\|128.188277\|32.585318\|2\|596\|-81.43\|-2.66\|713.29\|502\|591\|-\|-\|-\|-78.99\|-91.68\|-\|-\|-\|182.3 2025-05-07 14:38:25.000000\|128.188234\|32.585327\|13\|596\|-78.4\|1.06\|826.0\|502\|591\|-\|-\|-\|-80.0\|-91.06\|-\|-\|-\|194.78 2025-05-07 14:38:26.000000\|128.188191\|32.585339\|14\|596\|-77.72\|2.21\|321.8\|502\|591\|-\|-\|-\|-77.75\|-90.26\|-\|-\|-\|187.52 2025-05-07 14:38:27.000000\|128.188148\|32.585346\|38\|596\|-77.04\|-1.77\|296.29\|502\|591\|-\|-\|-\|-79.82\|-89.67\|-\|-\|-\|189.43 2025-05-07 14:38:28.000000\|128.188098\|32.585359\|29\|502\|-87.78\|-3.25\|425.09\|596\|591\|151\|-\|-\|-77.8\|-89.07\|-95.93\|-\|-\|185.98 2025-05-07 14:38:29.000000\|128.188062\|32.58537\|32\|502\|-71.88\|10.41\|461.1\|596\|591\|660\|151\|-\|-76.33\|-86.79\|-96.03\|-99.66\|-\|182.74 2025-05-07 14:38:30.000000\|128.188033\|32.585378\|19\|502\|-72.14\|11.46\|722.49\|596\|591\|151\|160\|911\|-80.77\|-91.53\|-97.14\|-104.12\|-105.62\|208.41 2025-05-07 14:38:31.000000\|128.187998\|32.58539\|5\|502\|-68.82\|9.13\|920.58\|596\|591\|660\|911\|151\|-72.82\|-86.03\|-95.36\|-102.62\|-99.74\|209.29 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175615\|32.589422\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186815\|32.585932\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033237\|24\|128.189146\|32.585915\|330\|19\|6\|0\|SCENARIO_3\|81.0\|502\|64T64R\|34.9\|NR AAU 2 0033164\|4\|128.186269\|32.584364\|162\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033984\|1\|128.190266\|32.589377\|230\|10\|255\|0\|DEFAULT\|78.0\|767\|64T64R\|34.9\|NR AAU 2 0033164\|12\|128.189849\|32.583456\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033237\|4\|128.187956\|32.585861\|160\|1\|10\|0\|SCENARIO_3\|18.6\|596\|32T32R\|34.9\|NR AAU 3	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:08:35.000000\|128.189699\|32.581067\|37\|129\|-87.19\|14.9\|1235.03\|307\|482\|660\|-\|-\|-97.19\|-106.94\|-121.51\|-\|-\|211.21 2025-05-07 11:08:36.000000\|128.189699\|32.581067\|20\|129\|-85.42\|16.72\|1187.44\|307\|482\|660\|-\|-\|-98.95\|-106.71\|-123.13\|-\|-\|211.22 2025-05-07 11:08:37.000000\|128.189699\|32.581067\|29\|482\|-87.43\|13.76\|454.09\|307\|129\|-\|-\|-\|-99.03\|-106.07\|-\|-\|-\|210.98 2025-05-07 11:08:38.000000\|128.189699\|32.581067\|3\|482\|-85.51\|13.46\|464.26\|307\|129\|-\|-\|-\|-99.21\|-105.23\|-\|-\|-\|211.15 2025-05-07 11:08:39.000000\|128.189699\|32.581067\|2\|482\|-89.88\|14.98\|489.97\|129\|307\|-\|-\|-\|-99.22\|-104.11\|-\|-\|-\|211.35 2025-05-07 11:08:40.000000\|128.189699\|32.581067\|26\|482\|-83.32\|16.69\|471.98\|129\|307\|-\|-\|-\|-100.58\|-104.85\|-\|-\|-\|208.59 2025-05-07 11:08:41.000000\|128.189699\|32.581067\|19\|307\|-84.15\|14.84\|1216.56\|129\|482\|-\|-\|-\|-101.49\|-104.95\|-\|-\|-\|208.96 2025-05-07 11:08:42.000000\|128.189734\|32.581036\|25\|307\|-85.33\|15.33\|1203.34\|129\|482\|-\|-\|-\|-98.96\|-103.45\|-\|-\|-\|210.74 2025-05-07 11:08:43.000000\|128.189699\|32.581067\|28\|307\|-85.28\|17.59\|1334.78\|129\|482\|-\|-\|-\|-99.48\|-103.99\|-\|-\|-\|211.14 2025-05-07 11:08:44.000000\|128.189699\|32.581067\|5\|307\|-86.21\|12.47\|1247.55\|129\|482\|660\|-\|-\|-100.93\|-104.21\|-119.57\|-\|-\|211.05 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|24\|128.189178\|32.581808\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1 0033164\|26\|128.189394\|32.581016\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1 0033164\|14\|128.189423\|32.581034\|80\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.176027\|32.589482\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033917\|15\|128.22275\|32.579567\|275\|3\|9\|0\|SCENARIO_9\|24.0\|482\|32T32R\|34.9\|NR AAU 3	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:19:42.000000\|128.186911\|32.584055\|24\|330\|-85.24\|24.1\|1092.24\|591\|660\|-\|-\|-\|-105.6\|-115.31\|-\|-\|-\|201.73 2025-05-07 14:19:43.000000\|128.186911\|32.584055\|4\|330\|-86.39\|24.61\|1171.81\|591\|660\|-\|-\|-\|-105.93\|-115.31\|-\|-\|-\|200.49 2025-05-07 14:19:44.000000\|128.185865\|32.585336\|35\|330\|-83.47\|24.86\|747.55\|591\|660\|-\|-\|-\|-105.97\|-117.82\|-\|-\|-\|194.44 2025-05-07 14:19:45.000000\|128.186911\|32.584055\|26\|330\|-86.51\|24.85\|740.48\|591\|660\|-\|-\|-\|-104.71\|-117.71\|-\|-\|-\|205.0 2025-05-07 14:19:46.000000\|128.186911\|32.584055\|27\|330\|-84.18\|24.33\|675.2\|591\|660\|-\|-\|-\|-105.4\|-116.71\|-\|-\|-\|205.25 2025-05-07 14:19:47.000000\|128.186911\|32.584055\|4\|330\|-82.02\|24.4\|323.52\|660\|591\|-\|-\|-\|-84.57\|-115.27\|-\|-\|-\|201.17 2025-05-07 14:19:48.000000\|128.186911\|32.584055\|9\|330\|-86.52\|22.38\|317.48\|660\|591\|597\|-\|-\|-88.68\|-114.28\|-133.57\|-\|-\|198.62 2025-05-07 14:19:49.000000\|128.186911\|32.584055\|11\|591\|-88.35\|21.53\|273.54\|660\|330\|597\|-\|-\|-90.37\|-117.53\|-120.79\|-\|-\|161.17 2025-05-07 14:19:50.000000\|128.186911\|32.584055\|22\|591\|-84.72\|23.8\|341.18\|660\|330\|597\|-\|-\|-87.38\|-117.43\|-121.86\|-\|-\|201.07 2025-05-07 14:19:51.000000\|128.186911\|32.584055\|0\|591\|-83.36\|26.01\|722.96\|330\|660\|597\|-\|-\|-105.32\|-116.85\|-122.44\|-\|-\|203.46 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:29:25.000000\|128.194593\|32.581237\|9\|477\|-81.98\|2.54\|750.04\|338\|482\|-\|-\|-\|-82.28\|-88.68\|-\|-\|-\|207.01 2025-05-07 11:29:26.000000\|128.194622\|32.581218\|15\|477\|-83.81\|2.52\|651.31\|338\|482\|-\|-\|-\|-82.72\|-86.49\|-\|-\|-\|205.01 2025-05-07 11:29:27.000000\|128.194651\|32.581198\|4\|477\|-84.97\|2.46\|1124.87\|338\|482\|-\|-\|-\|-80.91\|-92.2\|-\|-\|-\|204.78 2025-05-07 11:29:28.000000\|128.194678\|32.581175\|39\|477\|-84.36\|4.22\|1199.19\|338\|482\|-\|-\|-\|-82.39\|-92.41\|-\|-\|-\|200.64 2025-05-07 11:29:29.000000\|128.194714\|32.581156\|76\|477\|-84.46\|1.51\|213.28\|338\|482\|-\|-\|-\|-85.2\|-92.5\|-\|-\|-\|189.37 2025-05-07 11:29:30.000000\|128.194757\|32.581124\|49\|477\|-85.77\|1.87\|229.64\|338\|482\|-\|-\|-\|-86.83\|-93.33\|-\|-\|-\|196.44 2025-05-07 11:29:31.000000\|128.1948\|32.581105\|56\|338\|-85.17\|0.55\|236.93\|477\|482\|391\|462\|412\|-85.58\|-91.24\|-97.29\|-105.54\|-113.37\|204.04 2025-05-07 11:29:32.000000\|128.194849\|32.581075\|56\|338\|-76.83\|10.63\|281.13\|477\|482\|391\|-\|-\|-88.64\|-92.69\|-99.66\|-\|-\|196.37 2025-05-07 11:29:33.000000\|128.194906\|32.581043\|14\|338\|-75.86\|14.07\|885.45\|477\|482\|-\|-\|-\|-86.1\|-97.31\|-\|-\|-\|210.14 2025-05-07 11:29:34.000000\|128.194949\|32.581005\|33\|338\|-75.75\|17.39\|838.58\|477\|482\|-\|-\|-\|-84.82\|-95.59\|-\|-\|-\|209.99 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033918\|25\|128.193887\|32.582256\|140\|2\|255\|0\|DEFAULT\|22.7\|477\|64T64R\|34.9\|NR AAU 2 0033918\|26\|128.192236\|32.582537\|310\|0\|8\|-15\|SCENARIO_3\|15.4\|338\|64T64R\|34.9\|NR AAU 2 0033166\|5\|128.192999\|32.577343\|10\|5\|255\|0\|DEFAULT\|23.0\|134\|64T64R\|34.9\|NR AAU 2 0033917\|26\|128.194599\|32.57973\|110\|4\|9\|0\|DEFAULT\|24.0\|462\|32T32R\|34.9\|NR AAU 3 0034036\|14\|128.200941\|32.594725\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033917\|15\|128.194619\|32.579837\|275\|3\|9\|0\|SCENARIO_9\|24.0\|482\|32T32R\|34.9\|NR AAU 3 0033918\|27\|128.192236\|32.582537\|220\|2\|6\|0\|DEFAULT\|17.6\|412\|64T64R\|34.9\|NR AAU 2	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:46:32.000000\|128.187306\|32.579243\|1\|712\|-84.84\|2.7199999999999998\|887.68\|258\|764\|-\|-\|-\|-88.32\|-93.93\|-\|-\|-\|206.87 2025-05-07 14:46:33.000000\|128.187314\|32.579266\|4\|712\|-85.33\|0.05\|986.55\|258\|764\|868\|129\|-\|-91.26\|-93.94\|-98.87\|-109.87\|-\|210.66 2025-05-07 14:46:34.000000\|128.187321\|32.579297\|45\|712\|-84.46\|-0.67\|336.67\|258\|764\|-\|-\|-\|-89.49\|-92.97\|-\|-\|-\|210.34 2025-05-07 14:46:35.000000\|128.187335\|32.579315\|59\|712\|-84.99\|-0.43\|330.82\|258\|764\|-\|-\|-\|-87.8\|-96.1\|-\|-\|-\|209.2 2025-05-07 14:46:36.000000\|128.187343\|32.579345\|69\|258\|-87.13\|-1.6800000000000002\|416.78\|712\|764\|868\|720\|368\|-88.14\|-94.37\|-96.91\|-101.55\|-107.59\|210.23 2025-05-07 14:46:37.000000\|128.187351\|32.579372\|63\|258\|-82.35\|2.8200000000000003\|366.09\|712\|764\|-\|-\|-\|-90.55\|-95.6\|-\|-\|-\|210.32 2025-05-07 14:46:38.000000\|128.187366\|32.579403\|1\|258\|-84.76\|-1.51\|902.52\|712\|764\|-\|-\|-\|-89.71\|-93.78\|-\|-\|-\|210.28 2025-05-07 14:46:39.000000\|128.187374\|32.579433\|30\|258\|-84.84\|-0.30000000000000004\|1205.23\|712\|764\|868\|368\|284\|-88.66\|-93.94\|-97.98\|-103.08\|-111.11\|210.47 2025-05-07 14:46:40.000000\|128.187381\|32.579464\|18\|258\|-86.79\|-0.03\|977.11\|712\|764\|868\|368\|284\|-90.5\|-94.84\|-98.05\|-107.61\|-110.84\|189.96 2025-05-07 14:46:41.000000\|128.187381\|32.579483\|10\|258\|-84.11\|3.22\|1050.61\|712\|764\|868\|284\|129\|-89.54\|-93.63\|-102.58\|-104.15\|-116.52\|202.98 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|3\|128.188718\|32.577206\|183\|11\|4\|-20\|SCENARIO_9\|36.2\|61\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.191896\|32.578758\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0034038\|2\|128.18797\|32.579054\|140\|10\|4\|0\|DEFAULT\|5.0\|258\|64T64R\|34.9\|NR AAU 2 0034038\|4\|128.187961\|32.579084\|290\|1\|4\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0033166\|5\|128.192677\|32.577296\|10\|5\|255\|0\|DEFAULT\|23.0\|134\|64T64R\|34.9\|NR AAU 2 0033164\|14\|128.18917\|32.580998\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033317\|16\|128.18691\|32.580702\|217\|2\|13\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0034038\|24\|128.187378\|32.577865\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033164\|24\|128.188925\|32.581772\|235\|15\|9\|0\|DEFAULT\|22.1\|368\|32T32R\|34.9\|NR AAU 1	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:40:32.000000\|128.189771\|32.585001\|37\|502\|-85.59\|19.79\|1199.06\|333\|151\|911\|-\|-\|-100.87\|-103.39\|-115.03\|-\|-\|209.61 2025-05-07 14:40:33.000000\|128.189799\|32.584977\|8\|502\|-85.52\|18.87\|1061.08\|333\|151\|-\|-\|-\|-99.72\|-104.63\|-\|-\|-\|209.1 2025-05-07 14:40:34.000000\|128.189828\|32.58497\|28\|502\|-83.4\|16.94\|972.71\|333\|151\|-\|-\|-\|-105.87\|-107.73\|-\|-\|-\|195.19 2025-05-07 14:40:35.000000\|128.189863\|32.584958\|34\|502\|-84.8\|19.12\|825.89\|333\|151\|-\|-\|-\|-104.19\|-109.63\|-\|-\|-\|205.1 2025-05-07 14:40:36.000000\|128.189914\|32.584949\|10\|502\|-84.86\|19.88\|1033.84\|333\|151\|911\|572\|-\|-100.42\|-103.11\|-111.37\|-117.4\|-\|210.5 2025-05-07 14:40:37.000000\|128.189956\|32.584938\|13\|151\|-84.21\|19.66\|488.57\|333\|502\|400\|572\|591\|-97.55\|-105.37\|-108.54\|-121.73\|-124.95\|210.37 2025-05-07 14:40:38.000000\|128.190007\|32.584926\|11\|151\|-83.61\|16.86\|480.02\|333\|502\|591\|-\|-\|-95.26\|-108.46\|-114.13\|-\|-\|206.43 2025-05-07 14:40:39.000000\|128.190049\|32.584918\|26\|151\|-87.7\|11.99\|389.63\|502\|333\|911\|572\|480\|-90.82\|-97.14\|-112.34\|-111.34\|-119.26\|209.75 2025-05-07 14:40:40.000000\|128.190092\|32.584906\|6\|151\|-84.55\|19.02\|308.36\|502\|333\|911\|498\|767\|-93.41\|-102.09\|-104.14\|-117.42\|-123.45\|192.17 2025-05-07 14:40:41.000000\|128.190128\|32.584898\|36\|333\|-74.78\|24.56\|1152.76\|502\|151\|660\|498\|-\|-92.43\|-104.23\|-110.61\|-115.31\|-\|209.48 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175945\|32.58947\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033237\|15\|128.19067\|32.586634\|170\|1\|12\|0\|DEFAULT\|25.5\|333\|32T32R\|34.9\|NR AAU 1 0033164\|12\|128.218379\|32.583244\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033237\|24\|128.189477\|32.585962\|150\|19\|6\|0\|SCENARIO_3\|81.0\|502\|64T64R\|34.9\|NR AAU 2 0033984\|4\|128.190573\|32.589445\|130\|10\|255\|0\|DEFAULT\|78.0\|480\|64T64R\|34.9\|NR AAU 2 0033918\|28\|128.193655\|32.584496\|304\|12\|9\|0\|SCENARIO_8\|42.7\|400\|32T32R\|34.9\|NR AAU 1 0033164\|5\|128.187145\|32.58598\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0034039\|3\|128.192067\|32.578782\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033984\|1\|128.190597\|32.589425\|230\|10\|255\|0\|DEFAULT\|78.0\|767\|64T64R\|34.9\|NR AAU 2	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:22:52.000000\|128.186918\|32.584056\|22\|330\|-86.42\|22.32\|737.65\|591\|660\|-\|-\|-\|-103.26\|-114.01\|-\|-\|-\|178.45 2025-05-07 14:22:53.000000\|128.186918\|32.584056\|6\|330\|-85.49\|21.31\|625.06\|591\|660\|-\|-\|-\|-105.19\|-113.83\|-\|-\|-\|195.95 2025-05-07 14:22:54.000000\|128.186918\|32.584056\|11\|330\|-86.53\|22.08\|727.17\|591\|660\|597\|-\|-\|-105.36\|-113.28\|-118.15\|-\|-\|191.02 2025-05-07 14:22:55.000000\|128.186918\|32.584056\|8\|330\|-87.3\|20.99\|815.79\|591\|660\|-\|-\|-\|-102.54\|-114.3\|-\|-\|-\|205.93 2025-05-07 14:22:56.000000\|128.186918\|32.584056\|32\|330\|-87.7\|20.21\|691.98\|591\|660\|-\|-\|-\|-103.3\|-114.65\|-\|-\|-\|204.32 2025-05-07 14:22:57.000000\|128.186918\|32.584056\|49\|330\|-88.73\|20.13\|292.7\|591\|660\|597\|-\|-\|-101.95\|-112.21\|-115.45\|-\|-\|204.48 2025-05-07 14:22:58.000000\|128.186918\|32.584056\|44\|330\|-85.37\|20.59\|345.37\|591\|660\|597\|-\|-\|-104.05\|-114.53\|-118.71\|-\|-\|203.78 2025-05-07 14:22:59.000000\|128.186918\|32.584056\|71\|591\|-87.44\|19.05\|257.35\|330\|660\|597\|-\|-\|-104.31\|-114.66\|-118.4\|-\|-\|202.74 2025-05-07 14:23:00.000000\|128.186918\|32.584056\|79\|591\|-88.34\|18.82\|316.96\|330\|660\|597\|-\|-\|-103.6\|-113.21\|-116.16\|-\|-\|206.41 2025-05-07 14:23:01.000000\|128.186918\|32.584056\|16\|591\|-86.86\|20.0\|813.38\|330\|660\|597\|-\|-\|-104.2\|-114.17\|-116.87\|-\|-\|204.32 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:17:22.000000\|128.186911\|32.584055\|34\|330\|-84.92\|20.47\|1185.66\|591\|660\|597\|-\|-\|-106.26\|-114.13\|-120.0\|-\|-\|202.83 2025-05-07 14:17:23.000000\|128.186911\|32.584055\|16\|330\|-87.46\|20.63\|301.61\|591\|660\|597\|-\|-\|-91.81\|-115.51\|-116.48\|-\|-\|205.8 2025-05-07 14:17:24.000000\|128.185869\|32.585626\|1\|330\|-89.14\|20.16\|212.76\|591\|660\|597\|-\|-\|-91.54\|-114.93\|-122.29\|-\|-\|208.91 2025-05-07 14:17:25.000000\|128.186911\|32.584055\|14\|591\|-86.67\|19.13\|445.39\|330\|660\|597\|-\|-\|-89.66\|-112.87\|-121.99\|-\|-\|209.32 2025-05-07 14:17:26.000000\|128.186911\|32.584055\|33\|591\|-87.85\|19.53\|518.89\|330\|660\|597\|-\|-\|-91.18\|-113.02\|-118.18\|-\|-\|207.39 2025-05-07 14:17:27.000000\|128.186911\|32.584055\|24\|591\|-89.34\|20.03\|774.34\|330\|660\|597\|-\|-\|-103.51\|-113.0\|-117.73\|-\|-\|203.31 2025-05-07 14:17:28.000000\|128.186911\|32.584055\|39\|591\|-88.91\|20.14\|806.47\|330\|660\|597\|-\|-\|-104.55\|-113.44\|-119.41\|-\|-\|209.56 2025-05-07 14:17:29.000000\|128.186911\|32.584055\|3\|591\|-86.94\|20.3\|667.33\|330\|660\|597\|-\|-\|-104.13\|-113.05\|-120.7\|-\|-\|209.19 2025-05-07 14:17:30.000000\|128.186911\|32.584055\|37\|591\|-83.44\|20.92\|717.22\|330\|660\|597\|-\|-\|-105.3\|-113.65\|-118.74\|-\|-\|207.39 2025-05-07 14:17:31.000000\|128.186911\|32.584055\|35\|591\|-84.72\|20.16\|674.14\|330\|660\|597\|-\|-\|-104.76\|-113.78\|-118.33\|-\|-\|203.15 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:34:55.000000\|128.191851\|32.581387\|3\|412\|-82.04\|17.64\|1269.7\|338\|498\|696\|691\|-\|-95.37\|-103.81\|-114.56\|-122.29\|-\|210.64 2025-05-07 11:34:56.000000\|128.191887\|32.581378\|20\|412\|-79.3\|19.01\|1247.57\|338\|498\|696\|-\|-\|-95.78\|-103.86\|-116.66\|-\|-\|210.43 2025-05-07 11:34:57.000000\|128.191937\|32.581359\|21\|412\|-76.96\|21.12\|1264.35\|338\|498\|696\|-\|-\|-97.36\|-101.83\|-113.43\|-\|-\|210.84 2025-05-07 11:34:58.000000\|128.191973\|32.581335\|33\|412\|-75.02\|26.21\|1067.39\|338\|498\|696\|-\|-\|-96.53\|-100.73\|-111.64\|-\|-\|211.39 2025-05-07 11:34:59.000000\|128.192023\|32.581327\|56\|412\|-73.42\|20.72\|423.02\|338\|498\|696\|868\|-\|-96.55\|-100.86\|-114.75\|-114.41\|-\|210.58 2025-05-07 11:35:00.000000\|128.192072\|32.581303\|58\|412\|-79.97\|13.44\|378.41\|338\|498\|477\|656\|691\|-93.69\|-102.15\|-108.81\|-119.94\|-124.33\|210.43 2025-05-07 11:35:01.000000\|128.192123\|32.581284\|55\|338\|-86.87\|10.85\|408.06\|412\|498\|-\|-\|-\|-94.1\|-103.3\|-\|-\|-\|210.03 2025-05-07 11:35:02.000000\|128.19218\|32.581276\|49\|338\|-81.89\|19.27\|503.67\|412\|498\|-\|-\|-\|-94.95\|-101.78\|-\|-\|-\|210.79 2025-05-07 11:35:03.000000\|128.192223\|32.581264\|4\|338\|-68.35\|31.53\|996.61\|412\|498\|-\|-\|-\|-92.83\|-105.28\|-\|-\|-\|210.53 2025-05-07 11:35:04.000000\|128.19231\|32.581332\|6\|338\|-70.7\|27.52\|1330.51\|412\|498\|656\|868\|696\|-97.59\|-102.07\|-110.66\|-113.86\|-130.23\|210.4 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033918\|27\|128.192197\|32.582532\|180\|1\|6\|0\|DEFAULT\|17.6\|412\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.192179\|32.578799\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033918\|25\|128.193848\|32.58225\|215\|2\|255\|0\|DEFAULT\|22.7\|477\|64T64R\|34.9\|NR AAU 2 0033918\|52\|128.192258\|32.582563\|110\|3\|11\|0\|DEFAULT\|18.6\|696\|32T32R\|34.9\|NR AAU 1 0034036\|14\|128.200902\|32.59472\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033918\|26\|128.192197\|32.582532\|310\|0\|8\|-15\|SCENARIO_3\|15.4\|338\|64T64R\|34.9\|NR AAU 2 0034039\|4\|128.192635\|32.578774\|255\|20\|255\|0\|DEFAULT\|111.0\|656\|64T64R\|34.9\|NR AAU 2 0033917\|15\|128.19458\|32.579831\|275\|3\|9\|0\|SCENARIO_9\|24.0\|482\|32T32R\|34.9\|NR AAU 3	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:41:06.000000\|128.186928\|32.577222\|14\|729\|-82.41\|16.18\|1568.02\|467\|896\|-\|-\|-\|-91.68\|-107.03\|-\|-\|-\|199.28 2025-05-07 16:41:07.000000\|128.186899\|32.57723\|18\|729\|-79.72\|15.94\|1518.09\|467\|896\|-\|-\|-\|-87.23\|-108.94\|-\|-\|-\|190.73 2025-05-07 16:41:08.000000\|128.186864\|32.577253\|75\|729\|-82.76\|14.53\|595.4\|467\|896\|-\|-\|-\|-82.24\|-107.08\|-\|-\|-\|202.63 2025-05-07 16:41:09.000000\|128.186835\|32.577262\|63\|729\|-82.28\|11.65\|346.86\|467\|896\|732\|-\|-\|-79.39\|-90.02\|-113.98\|-\|-\|194.14 2025-05-07 16:41:10.000000\|128.1868\|32.577285\|62\|467\|-88.7\|9.18\|356.83\|729\|896\|-\|-\|-\|-92.19\|-\|-\|-\|-\|207.54 2025-05-07 16:41:11.000000\|128.186771\|32.577292\|44\|467\|-80.71\|10.22\|402.45\|729\|896\|-\|-\|-\|-92.28\|-110.61\|-\|-\|-\|206.59 2025-05-07 16:41:12.000000\|128.186742\|32.577311\|8\|467\|-80.75\|16.42\|1085.1\|729\|896\|-\|-\|-\|-94.15\|-\|-\|-\|-\|210.03 2025-05-07 16:41:13.000000\|128.186721\|32.577324\|22\|467\|-77.75\|23.19\|1164.37\|729\|896\|-\|-\|-\|-97.38\|-110.99\|-\|-\|-\|208.84 2025-05-07 16:41:14.000000\|128.186707\|32.577335\|2\|467\|-80.72\|18.6\|1173.24\|729\|896\|732\|-\|-\|-97.86\|-113.74\|-117.07\|-\|-\|206.76 2025-05-07 16:41:15.000000\|128.186679\|32.577343\|30\|467\|-85.57\|15.5\|1250.51\|729\|896\|732\|-\|-\|-98.1\|-109.87\|-119.87\|-\|-\|209.31 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|28\|128.186684\|32.57686\|20\|8\|255\|0\|DEFAULT\|24.0\|729\|64T64R\|34.9\|NR AAU 2 0034038\|25\|128.186693\|32.576821\|2\|16\|7\|-10\|SCENARIO_8\|31.0\|467\|32T32R\|34.9\|NR AAU 1 0034038\|27\|128.188616\|32.577193\|260\|15\|6\|0\|DEFAULT\|35.2\|732\|32T32R\|34.9\|NR AAU 3 0033317\|3\|128.185973\|32.577162\|250\|8\|255\|0\|DEFAULT\|23.0\|896\|32T32R\|34.9\|NR AAU 1	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:56:52.000000\|128.185028\|32.582197\|31\|764\|-77.36\|18.32\|998.0\|217\|330\|265\|435\|160\|-96.13\|-103.46\|-106.24\|-116.56\|-121.08\|209.51 2025-05-07 14:56:53.000000\|128.185065\|32.582277\|0\|764\|-75.5\|19.98\|971.31\|217\|330\|265\|435\|160\|-98.72\|-102.47\|-109.24\|-112.24\|-118.92\|210.66 2025-05-07 14:56:54.000000\|128.185109\|32.582357\|19\|764\|-80.98\|15.67\|875.31\|217\|330\|-\|-\|-\|-97.35\|-103.17\|-\|-\|-\|210.68 2025-05-07 14:56:55.000000\|128.185146\|32.582436\|15\|764\|-81.87\|12.62\|647.29\|217\|330\|435\|160\|-\|-92.22\|-100.44\|-111.74\|-118.99\|-\|210.65 2025-05-07 14:56:56.000000\|128.185183\|32.582524\|33\|764\|-79.21\|12.95\|764.63\|217\|330\|160\|435\|-\|-90.58\|-97.41\|-106.28\|-118.62\|-\|211.21 2025-05-07 14:56:57.000000\|128.185221\|32.582616\|27\|764\|-82.32\|9.61\|346.58\|217\|330\|435\|-\|-\|-93.36\|-99.27\|-111.93\|-\|-\|211.18 2025-05-07 14:56:58.000000\|128.183829\|32.581468\|3\|217\|-84.19\|5.8\|297.73\|764\|330\|-\|-\|-\|-94.15\|-97.71\|-\|-\|-\|211.34 2025-05-07 14:56:59.000000\|128.185301\|32.582763\|32\|764\|-87.84\|1.77\|318.05\|217\|330\|-\|-\|-\|-92.53\|-101.11\|-\|-\|-\|211.06 2025-05-07 14:57:00.000000\|128.18533\|32.582824\|30\|217\|-82.66\|9.08\|307.59\|764\|330\|265\|660\|-\|-89.21\|-95.56\|-99.49\|-112.58\|-\|210.79 2025-05-07 14:57:01.000000\|128.185345\|32.582874\|37\|217\|-87.01\|6.14\|697.56\|764\|330\|-\|-\|-\|-87.74\|-94.84\|-\|-\|-\|211.32 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033162\|2\|128.185994\|32.566447\|300\|8\|12\|0\|DEFAULT\|34.0\|106\|64T64R\|34.9\|NR AAU 2 0033317\|13\|128.186798\|32.580624\|5\|5\|6\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033164\|4\|128.186281\|32.584365\|162\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033166\|25\|128.189332\|32.574145\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2 0033978\|12\|128.195615\|32.588842\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0033317\|16\|128.186762\|32.580681\|320\|3\|0\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.175626\|32.589424\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2	C5
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:35:12.000000\|128.187146\|32.584495\|27\|330\|-80.04\|4.68\|1100.05\|591\|265\|160\|660\|-\|-74.98\|-87.33\|-95.49\|-105.53\|-\|186.94 2025-05-07 14:35:13.000000\|128.187095\|32.584515\|25\|330\|-77.31\|5.2\|1048.34\|591\|265\|597\|911\|-\|-84.24\|-93.8\|-99.82\|-108.29\|-\|207.52 2025-05-07 14:35:14.000000\|128.187052\|32.584546\|39\|330\|-80.46\|3.01\|230.63\|591\|265\|-\|-\|-\|-84.86\|-90.31\|-\|-\|-\|210.28 2025-05-07 14:35:15.000000\|128.186995\|32.584566\|17\|330\|-83.85\|-1.09\|234.07\|591\|265\|-\|-\|-\|-86.83\|-93.72\|-\|-\|-\|209.54 2025-05-07 14:35:16.000000\|128.186938\|32.584596\|28\|591\|-86.26\|-1.52\|356.56\|330\|265\|597\|-\|-\|-81.01\|-85.34\|-97.69\|-\|-\|210.05 2025-05-07 14:35:17.000000\|128.185868\|32.585626\|17\|591\|-82.69\|2.42\|292.38\|330\|265\|-\|-\|-\|-78.78\|-85.56\|-\|-\|-\|161.0 2025-05-07 14:35:18.000000\|128.186824\|32.584648\|21\|591\|-77.65\|7.3\|1118.31\|330\|265\|-\|-\|-\|-79.87\|-88.87\|-\|-\|-\|205.54 2025-05-07 14:35:19.000000\|128.186761\|32.584679\|7\|591\|-80.95\|3.83\|1037.03\|330\|265\|660\|160\|-\|-84.08\|-89.86\|-93.87\|-97.31\|-\|208.86 2025-05-07 14:35:20.000000\|128.186704\|32.584699\|12\|591\|-83.5\|3.54\|1198.67\|330\|265\|-\|-\|-\|-85.23\|-90.68\|-\|-\|-\|208.7 2025-05-07 14:35:21.000000\|128.186647\|32.584729\|38\|591\|-83.85\|10.29\|709.61\|330\|265\|160\|-\|-\|-83.82\|-88.78\|-96.31\|-\|-\|209.95 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175244\|32.589369\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|4\|128.185899\|32.58431\|70\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179408\|32.574038\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3 0033166\|25\|128.188951\|32.57409\|330\|17\|9\|-5\|SCENARIO_2\|31.1\|265\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186445\|32.585879\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0000775\|15\|128.165831\|32.583778\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|325\|8T8R\|46.0\|Other	C3
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:49:25.000000\|128.190385\|32.575422\|15\|170\|-87.37\|15.95\|1421.51\|290\|507\|486\|619\|364\|-97.79\|-112.05\|-133.33\|-137.45\|-140.5\|208.99 2025-05-07 11:49:26.000000\|128.190377\|32.575422\|21\|170\|-87.61\|13.89\|1464.37\|290\|507\|364\|656\|486\|-97.53\|-115.62\|-127.42\|-131.32\|-141.57\|210.78 2025-05-07 11:49:27.000000\|128.190371\|32.575403\|36\|170\|-87.72\|13.82\|507.92\|290\|507\|656\|619\|281\|-93.13\|-113.01\|-128.63\|-137.77\|-144.02\|207.36 2025-05-07 11:49:28.000000\|128.190356\|32.575403\|0\|170\|-88.3\|14.26\|373.86\|290\|507\|281\|656\|486\|-94.25\|-112.08\|-124.83\|-128.76\|-132.21\|204.51 2025-05-07 11:49:29.000000\|128.190349\|32.575391\|28\|290\|-89.02\|16.41\|575.75\|170\|507\|486\|656\|281\|-94.07\|-114.72\|-125.6\|-134.32\|-133.06\|204.93 2025-05-07 11:49:30.000000\|128.190341\|32.575391\|20\|290\|-86.58\|13.53\|552.06\|170\|507\|-\|-\|-\|-91.61\|-115.11\|-\|-\|-\|206.22 2025-05-07 11:49:31.000000\|128.190341\|32.575391\|0\|290\|-87.75\|15.34\|1314.29\|170\|507\|486\|281\|656\|-98.57\|-112.46\|-125.61\|-130.2\|-137.5\|207.57 2025-05-07 11:49:32.000000\|128.190341\|32.575384\|24\|290\|-87.06\|15.75\|725.34\|170\|507\|486\|619\|656\|-99.84\|-110.52\|-121.41\|-133.18\|-138.07\|206.37 2025-05-07 11:49:33.000000\|128.190341\|32.575384\|35\|290\|-86.85\|17.78\|876.49\|170\|507\|486\|619\|364\|-98.02\|-109.48\|-122.27\|-130.32\|-139.87\|206.77 2025-05-07 11:49:34.000000\|128.190341\|32.575384\|23\|290\|-86.41\|18.72\|1412.26\|170\|507\|364\|281\|656\|-99.84\|-111.69\|-131.39\|-136.94\|-143.64\|208.44 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033286\|62\|128.187331\|32.574849\|140\|0\|6\|20\|SCENARIO_13\|20.0\|507\|32T32R\|34.9\|NR AAU 1 0033166\|16\|128.190571\|32.574846\|90\|8\|10\|0\|SCENARIO_1\|33.3\|1123\|64T64R\|34.9\|NR AAU 2 0033166\|26\|128.190713\|32.575448\|260\|17\|4\|20\|SCENARIO_4\|48.1\|170\|64T64R\|34.9\|NR AAU 2 0033288\|61\|128.200574\|32.573543\|0\|0\|255\|0\|DEFAULT\|0.0\|486\|4T4R\|24.0\|Other 0034039\|2\|128.191965\|32.578628\|90\|21\|255\|0\|DEFAULT\|123.0\|619\|64T64R\|34.9\|NR AAU 2 0034039\|0\|128.191064\|32.578709\|90\|21\|255\|0\|DEFAULT\|111.0\|364\|64T64R\|34.9\|NR AAU 2 0034039\|4\|128.192526\|32.578759\|255\|20\|255\|0\|DEFAULT\|111.0\|656\|64T64R\|34.9\|NR AAU 2 0033166\|3\|128.190535\|32.57469\|250\|11\|13\|-10\|SCENARIO_3\|31.1\|281\|64T64R\|34.9\|NR AAU 2	C6
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:39:36.000000\|128.188339\|32.579667\|10\|712\|-88.11\|6.59\|949.37\|258\|71\|-\|-\|-\|-87.27\|-93.83\|-\|-\|-\|211.04 2025-05-07 16:39:37.000000\|128.188339\|32.579667\|26\|712\|-85.91\|7.79\|979.29\|258\|71\|-\|-\|-\|-86.72\|-91.32\|-\|-\|-\|208.51 2025-05-07 16:39:38.000000\|128.188339\|32.579667\|15\|712\|-87.65\|8.68\|945.91\|258\|71\|-\|-\|-\|-87.82\|-92.55\|-\|-\|-\|204.59 2025-05-07 16:39:39.000000\|128.188339\|32.579667\|36\|712\|-89.05\|8.76\|1011.36\|258\|71\|-\|-\|-\|-86.92\|-92.67\|-\|-\|-\|210.99 2025-05-07 16:39:40.000000\|128.188339\|32.579667\|20\|712\|-84.72\|8.44\|454.82\|71\|258\|-\|-\|-\|-87.3\|-95.31\|-\|-\|-\|204.61 2025-05-07 16:39:41.000000\|128.188339\|32.579667\|34\|712\|-85.81\|8.75\|453.76\|71\|258\|-\|-\|-\|-88.17\|-95.5\|-\|-\|-\|210.08 2025-05-07 16:39:42.000000\|128.188339\|32.579667\|21\|258\|-89.54\|8.81\|494.36\|71\|712\|-\|-\|-\|-87.48\|-94.72\|-\|-\|-\|209.63 2025-05-07 16:39:43.000000\|128.188339\|32.579667\|11\|258\|-87.17\|8.08\|466.79\|71\|712\|-\|-\|-\|-87.49\|-93.1\|-\|-\|-\|204.85 2025-05-07 16:39:44.000000\|128.188339\|32.579667\|38\|258\|-87.58\|8.85\|1172.91\|712\|71\|307\|-\|-\|-86.82\|-95.46\|-108.36\|-\|-\|208.42 2025-05-07 16:39:45.000000\|128.188339\|32.579667\|5\|258\|-85.96\|9.6\|1084.47\|712\|71\|307\|284\|-\|-88.92\|-94.96\|-108.17\|-117.61\|-\|211.35 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033164\|27\|128.189082\|32.580929\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034038\|4\|128.187922\|32.579079\|30\|3\|0\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0033164\|14\|128.18913\|32.580992\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0034038\|2\|128.187931\|32.579048\|140\|10\|4\|0\|DEFAULT\|5.0\|258\|64T64R\|34.9\|NR AAU 2 0034038\|24\|128.187339\|32.577859\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033164\|26\|128.189101\|32.580973\|60\|2\|9\|0\|DEFAULT\|26.6\|307\|32T32R\|34.9\|NR AAU 1	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:21:26.000000\|128.187305\|32.581458\|9\|764\|-83.24\|28.81\|1127.57\|217\|71\|-\|-\|-\|-106.28\|-112.86\|-\|-\|-\|210.8 2025-05-07 16:21:27.000000\|128.187327\|32.581495\|14\|764\|-83.31\|26.39\|1198.6\|217\|71\|868\|435\|498\|-108.6\|-112.88\|-120.73\|-120.09\|-138.08\|210.84 2025-05-07 16:21:28.000000\|128.187349\|32.581526\|25\|764\|-85.92\|26.53\|1245.09\|217\|71\|435\|-\|-\|-106.8\|-112.82\|-117.99\|-\|-\|210.93 2025-05-07 16:21:29.000000\|128.187379\|32.581568\|10\|764\|-86.97\|23.36\|1145.94\|217\|71\|660\|-\|-\|-105.31\|-111.72\|-123.24\|-\|-\|210.64 2025-05-07 16:21:30.000000\|128.1874\|32.581587\|14\|764\|-86.35\|24.31\|1131.93\|217\|71\|435\|-\|-\|-104.79\|-110.32\|-118.23\|-\|-\|209.41 2025-05-07 16:21:31.000000\|128.187421\|32.581617\|33\|71\|-87.87\|22.96\|486.06\|217\|764\|-\|-\|-\|-103.73\|-108.25\|-\|-\|-\|210.91 2025-05-07 16:21:32.000000\|128.187429\|32.581625\|12\|71\|-88.72\|22.65\|448.6\|217\|764\|435\|498\|-\|-100.83\|-108.75\|-122.55\|-127.65\|-\|209.76 2025-05-07 16:21:33.000000\|128.187437\|32.581635\|17\|71\|-89.56\|21.79\|490.08\|764\|217\|498\|435\|-\|-99.3\|-107.55\|-120.2\|-121.05\|-\|209.45 2025-05-07 16:21:34.000000\|128.187459\|32.581647\|8\|71\|-86.64\|24.34\|467.47\|764\|217\|498\|435\|-\|-98.45\|-105.83\|-117.41\|-125.64\|-\|211.21 2025-05-07 16:21:35.000000\|128.187465\|32.581647\|6\|217\|-86.89\|19.1\|1138.63\|764\|71\|498\|435\|-\|-96.5\|-107.89\|-118.64\|-124.0\|-\|210.74 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033317\|13\|128.187229\|32.580686\|5\|5\|6\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0033164\|27\|128.217604\|32.580716\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034036\|14\|128.200902\|32.594719\|0\|0\|255\|0\|EXPAND_SCENARIO_2\|0.0\|868\|4T4R\|46.0\|Other 0033317\|16\|128.187192\|32.580743\|20\|7\|0\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0033978\|12\|128.196045\|32.588904\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0034039\|3\|128.192178\|32.578799\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0000293\|0\|128.176056\|32.589486\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:23:12.000000\|128.186918\|32.584056\|5\|330\|-84.56\|20.57\|768.83\|591\|660\|597\|-\|-\|-109.67\|-116.2\|-119.06\|-\|-\|161.02 2025-05-07 14:23:13.000000\|128.186918\|32.584056\|12\|330\|-88.52\|21.13\|875.41\|591\|660\|597\|-\|-\|-106.63\|-113.33\|-119.95\|-\|-\|183.58 2025-05-07 14:23:14.000000\|128.186918\|32.584056\|36\|330\|-84.16\|23.36\|352.32\|660\|591\|597\|-\|-\|-86.38\|-114.18\|-120.92\|-\|-\|196.53 2025-05-07 14:23:15.000000\|128.186918\|32.584056\|28\|330\|-86.35\|22.79\|366.87\|660\|591\|597\|-\|-\|-89.3\|-113.51\|-120.59\|-\|-\|199.46 2025-05-07 14:23:16.000000\|128.186918\|32.584056\|15\|591\|-86.58\|21.14\|392.95\|660\|330\|597\|-\|-\|-88.86\|-115.07\|-123.05\|-\|-\|197.37 2025-05-07 14:23:17.000000\|128.186918\|32.584056\|35\|591\|-85.88\|22.38\|383.62\|660\|330\|-\|-\|-\|-88.76\|-117.21\|-\|-\|-\|187.91 2025-05-07 14:23:18.000000\|128.186918\|32.584056\|13\|591\|-84.44\|21.21\|1017.92\|330\|660\|-\|-\|-\|-105.06\|-116.76\|-\|-\|-\|198.85 2025-05-07 14:23:19.000000\|128.186918\|32.584056\|10\|591\|-85.87\|20.8\|1002.42\|330\|660\|597\|-\|-\|-104.34\|-115.36\|-120.44\|-\|-\|197.25 2025-05-07 14:23:20.000000\|128.186918\|32.584056\|0\|591\|-87.25\|21.98\|1107.28\|330\|660\|-\|-\|-\|-104.68\|-118.71\|-\|-\|-\|208.49 2025-05-07 14:23:21.000000\|128.186918\|32.584056\|31\|591\|-87.25\|23.4\|1001.37\|330\|660\|-\|-\|-\|-106.6\|-117.56\|-\|-\|-\|207.05 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|120\|14\|13\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:17:12.000000\|128.186918\|32.584056\|19\|330\|-89.16\|19.78\|626.31\|591\|660\|-\|-\|-\|-108.21\|-120.74\|-\|-\|-\|208.39 2025-05-07 14:17:13.000000\|128.186918\|32.584056\|13\|330\|-91.15\|20.23\|696.72\|591\|660\|-\|-\|-\|-108.84\|-117.85\|-\|-\|-\|205.27 2025-05-07 14:17:14.000000\|128.186918\|32.584056\|8\|330\|-91.0\|21.61\|680.64\|591\|660\|-\|-\|-\|-108.34\|-118.57\|-\|-\|-\|208.97 2025-05-07 14:17:15.000000\|128.186918\|32.584056\|10\|330\|-92.56\|21.27\|1131.87\|591\|660\|-\|-\|-\|-108.79\|-121.29\|-\|-\|-\|208.23 2025-05-07 14:17:16.000000\|128.186918\|32.584056\|25\|330\|-89.92\|21.37\|1124.45\|591\|660\|597\|-\|-\|-109.13\|-120.28\|-125.78\|-\|-\|204.11 2025-05-07 14:17:17.000000\|128.186918\|32.584056\|13\|330\|-90.13\|19.39\|236.56\|591\|660\|597\|-\|-\|-110.54\|-116.88\|-123.23\|-\|-\|198.62 2025-05-07 14:17:18.000000\|128.186918\|32.584056\|11\|330\|-91.08\|19.71\|233.22\|591\|660\|597\|-\|-\|-108.34\|-119.89\|-120.5\|-\|-\|205.22 2025-05-07 14:17:19.000000\|128.186918\|32.584056\|4\|591\|-87.14\|19.71\|249.96\|330\|660\|597\|-\|-\|-104.73\|-112.84\|-119.61\|-\|-\|208.81 2025-05-07 14:17:20.000000\|128.186918\|32.584056\|35\|591\|-88.4\|21.01\|218.49\|330\|660\|597\|-\|-\|-104.94\|-112.87\|-118.74\|-\|-\|208.09 2025-05-07 14:17:21.000000\|128.186918\|32.584056\|15\|591\|-85.15\|20.82\|663.3\|330\|660\|597\|-\|-\|-108.55\|-112.9\|-119.09\|-\|-\|206.52 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175335\|32.589382\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033164\|5\|128.186536\|32.585892\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0033164\|4\|128.18599\|32.584323\|120\|37\|9\|10\|SCENARIO_4\|52.9\|330\|32T32R\|34.9\|NR AAU 3 0033286\|14\|128.179498\|32.574051\|60\|7\|13\|0\|SCENARIO_3\|56.0\|597\|32T32R\|34.9\|NR AAU 3	C1
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 16:23:46.000000\|128.188163\|32.579174\|0\|712\|-75.3\|15.67\|1572.86\|258\|71\|-\|-\|-\|-87.33\|-96.4\|-\|-\|-\|211.02 2025-05-07 16:23:47.000000\|128.188163\|32.579174\|22\|712\|-79.87\|13.98\|1530.39\|258\|71\|284\|-\|-\|-88.08\|-99.02\|-104.41\|-\|-\|210.93 2025-05-07 16:23:48.000000\|128.188163\|32.579174\|23\|712\|-80.38\|10.48\|1434.21\|258\|71\|284\|-\|-\|-88.79\|-97.93\|-110.65\|-\|-\|211.17 2025-05-07 16:23:49.000000\|128.188149\|32.579162\|23\|712\|-84.35\|10.03\|1483.64\|258\|71\|284\|-\|-\|-89.05\|-97.4\|-112.15\|-\|-\|211.0 2025-05-07 16:23:50.000000\|128.188141\|32.579136\|74\|712\|-84.49\|5.14\|455.99\|258\|71\|284\|-\|-\|-84.68\|-99.36\|-118.49\|-\|-\|210.92 2025-05-07 16:23:51.000000\|128.188134\|32.579094\|59\|712\|-87.96\|6.55\|426.17\|258\|71\|-\|-\|-\|-79.85\|-91.22\|-\|-\|-\|198.53 2025-05-07 16:23:52.000000\|128.188118\|32.579056\|43\|258\|-85.43\|14.08\|526.45\|712\|71\|284\|-\|-\|-87.54\|-95.0\|-100.78\|-\|-\|209.48 2025-05-07 16:23:53.000000\|128.188103\|32.579002\|71\|258\|-84.21\|11.98\|510.77\|712\|71\|284\|-\|-\|-85.66\|-95.66\|-111.01\|-\|-\|208.33 2025-05-07 16:23:54.000000\|128.188075\|32.578954\|32\|258\|-82.06\|13.49\|1366.55\|712\|71\|284\|-\|-\|-85.74\|-95.58\|-99.16\|-\|-\|207.87 2025-05-07 16:23:55.000000\|128.188052\|32.578896\|17\|258\|-72.63\|26.66\|1094.2\|712\|71\|96\|-\|-\|-91.76\|-101.76\|-105.62\|-\|-\|205.07 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0034038\|4\|128.187881\|32.579073\|70\|8\|4\|0\|DEFAULT\|5.0\|712\|64T64R\|34.9\|NR AAU 2 0034038\|2\|128.18789\|32.579043\|140\|10\|4\|0\|DEFAULT\|5.0\|258\|64T64R\|34.9\|NR AAU 2 0033164\|27\|128.189041\|32.580923\|240\|3\|10\|0\|DEFAULT\|29.7\|71\|32T32R\|34.9\|NR AAU 1 0034038\|24\|128.187298\|32.577853\|40\|44\|9\|10\|SCENARIO_9\|56.0\|284\|64T64R\|34.9\|NR AAU 2 0033164\|14\|128.189089\|32.580986\|150\|20\|255\|0\|DEFAULT\|28.7\|129\|64T64R\|34.9\|NR AAU 2 0033317\|14\|128.185171\|32.579652\|55\|10\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2	C7
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:49:52.000000\|128.185849\|32.579695\|26\|96\|-65.77\|23.45\|1560.76\|217\|185\|61\|-\|-\|-85.97\|-92.02\|-108.51\|-\|-\|211.21 2025-05-07 14:49:53.000000\|128.18587\|32.579725\|36\|96\|-68.08\|19.48\|1630.75\|217\|185\|-\|-\|-\|-83.13\|-96.86\|-\|-\|-\|211.26 2025-05-07 14:49:54.000000\|128.1859\|32.579767\|22\|96\|-77.59\|12.73\|943.1\|217\|185\|435\|-\|-\|-78.75\|-107.15\|-107.65\|-\|-\|181.0 2025-05-07 14:49:55.000000\|128.185929\|32.579805\|14\|96\|-78.47\|12.05\|716.07\|217\|185\|-\|-\|-\|-79.24\|-99.14\|-\|-\|-\|195.94 2025-05-07 14:49:56.000000\|128.185959\|32.579854\|32\|185\|-80.72\|7.52\|349.77\|217\|96\|720\|435\|61\|-82.65\|-99.5\|-108.56\|-112.58\|-123.2\|210.11 2025-05-07 14:49:57.000000\|128.185987\|32.579896\|7\|185\|-87.07\|4.98\|429.32\|217\|96\|-\|-\|-\|-84.45\|-99.79\|-\|-\|-\|207.38 2025-05-07 14:49:58.000000\|128.186707\|32.58063\|1\|185\|-88.95\|6.94\|453.53\|96\|217\|289\|-\|-\|-82.42\|-97.4\|-103.95\|-\|-\|198.83 2025-05-07 14:49:59.000000\|128.186053\|32.579976\|2\|185\|-76.14\|20.73\|501.03\|96\|217\|-\|-\|-\|-93.42\|-96.88\|-\|-\|-\|204.95 2025-05-07 14:50:00.000000\|128.186083\|32.580013\|7\|217\|-70.79\|23.61\|1393.89\|96\|185\|-\|-\|-\|-94.11\|-100.14\|-\|-\|-\|210.51 2025-05-07 14:50:01.000000\|128.186119\|32.580063\|19\|217\|-69.47\|25.67\|1506.88\|96\|185\|-\|-\|-\|-92.24\|-99.09\|-\|-\|-\|210.83 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033317\|14\|128.185307\|32.579672\|70\|5\|11\|0\|DEFAULT\|25.9\|96\|64T64R\|34.9\|NR AAU 2 0033317\|16\|128.186965\|32.58071\|217\|2\|13\|0\|DEFAULT\|16.0\|764\|64T64R\|34.9\|NR AAU 2 0034038\|3\|128.188774\|32.577214\|183\|11\|4\|-20\|SCENARIO_9\|36.2\|61\|64T64R\|34.9\|NR AAU 2 0033978\|12\|128.195818\|32.588872\|55\|9\|255\|0\|DEFAULT\|39.2\|435\|32T32R\|34.9\|NR AAU 3 0033164\|29\|128.213593\|32.581354\|195\|8\|12\|0\|DEFAULT\|31.6\|185\|32T32R\|34.9\|NR AAU 1 0033164\|16\|128.187175\|32.583266\|270\|7\|8\|0\|DEFAULT\|18.4\|289\|64T64R\|34.9\|NR AAU 2 0033317\|13\|128.187002\|32.580653\|5\|5\|6\|0\|DEFAULT\|17.4\|217\|32T32R\|34.9\|NR AAU 1 0000293\|0\|128.175829\|32.589453\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2	C2
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 11:20:15.000000\|128.192371\|32.582578\|13\|696\|-81.99\|16.21\|1117.68\|338\|498\|477\|-\|-\|-101.16\|-107.3\|-113.58\|-\|-\|211.14 2025-05-07 11:20:16.000000\|128.192414\|32.582569\|8\|696\|-87.31\|14.69\|493.84\|498\|338\|412\|477\|-\|-89.82\|-104.39\|-115.02\|-118.91\|-\|211.37 2025-05-07 11:20:17.000000\|128.192465\|32.582558\|10\|696\|-88.01\|12.71\|505.47\|498\|338\|-\|-\|-\|-90.14\|-108.08\|-\|-\|-\|210.99 2025-05-07 11:20:18.000000\|128.192522\|32.582545\|19\|338\|-86.8\|14.12\|479.26\|498\|696\|477\|412\|-\|-89.01\|-105.25\|-114.65\|-120.6\|-\|211.31 2025-05-07 11:20:19.000000\|128.192572\|32.582538\|29\|338\|-88.56\|15.1\|509.71\|498\|696\|477\|412\|-\|-90.9\|-106.03\|-118.81\|-119.66\|-\|211.12 2025-05-07 11:20:20.000000\|128.192643\|32.582525\|23\|338\|-83.97\|18.14\|1308.87\|696\|498\|477\|412\|-\|-98.4\|-106.25\|-117.42\|-121.13\|-\|211.13 2025-05-07 11:20:21.000000\|128.192708\|32.582517\|12\|338\|-79.65\|19.53\|1253.96\|696\|498\|-\|-\|-\|-96.97\|-104.6\|-\|-\|-\|211.22 2025-05-07 11:20:22.000000\|128.192751\|32.582524\|26\|338\|-75.97\|21.29\|1525.57\|696\|498\|-\|-\|-\|-96.35\|-103.64\|-\|-\|-\|211.13 2025-05-07 11:20:23.000000\|128.19283\|32.582504\|0\|338\|-73.75\|23.5\|1434.49\|696\|498\|-\|-\|-\|-96.17\|-105.51\|-\|-\|-\|211.26 2025-05-07 11:20:24.000000\|128.192873\|32.582493\|32\|338\|-84.13\|19.37\|1371.65\|696\|498\|-\|-\|-\|-96.63\|-104.68\|-\|-\|-\|211.17 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0033918\|52\|128.19219\|32.582553\|80\|3\|11\|0\|DEFAULT\|18.6\|696\|32T32R\|34.9\|NR AAU 1 0033918\|26\|128.192128\|32.582522\|310\|0\|8\|-15\|SCENARIO_3\|15.4\|338\|64T64R\|34.9\|NR AAU 2 0033918\|24\|128.193779\|32.58224\|350\|4\|12\|0\|DEFAULT\|22.7\|983\|64T64R\|34.9\|NR AAU 2 0033918\|25\|128.193779\|32.58224\|215\|2\|255\|0\|DEFAULT\|22.7\|477\|64T64R\|34.9\|NR AAU 2 0034039\|3\|128.19211\|32.578789\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033918\|27\|128.192128\|32.582522\|220\|2\|6\|0\|DEFAULT\|17.6\|412\|64T64R\|34.9\|NR AAU 2	C4
Analyze the 5G wireless network drive-test user plane data and engineering parameters. Identify the reason for the throughput dropping below 600Mbps in certain road sections. From the following 8 potential root causes, select the most likely one and enclose its number in \boxed{{}} in the final answer. C1: The serving cell's downtilt angle is too large, causing weak coverage at the far end. C2: The serving cell's coverage distance exceeds 1km, resulting in over-shooting. C3: A neighboring cell provides higher throughput. C4: Non-colocated co-frequency neighboring cells cause severe overlapping coverage. C5: Frequent handovers degrade performance. C6: Neighbor cell and serving cell have the same PCI mod 30, leading to interference. C7: Test vehicle speed exceeds 40km/h, impacting user throughput. C8: Average scheduled RBs are below 160, affecting throughput. Given: - The default electronic downtilt value is 255, representing a downtilt angle of 6 degrees. Other values represent the actual downtilt angle in degrees. Beam Scenario and Vertical Beamwidth Relationships: - When the cell's Beam Scenario is set to Default or SCENARIO_1 to SCENARIO_5, the vertical beamwidth is 6 degrees. - When the cell's Beam Scenario is set to SCENARIO_6 to SCENARIO_11, the vertical beamwidth is 12 degrees. - When the cell's Beam Scenario is set to SCENARIO_12 or above, the vertical beamwidth is 25 degrees. User plane drive test data as follows： Timestamp\|Longitude\|Latitude\|GPS Speed (km/h)\|5G KPI PCell RF Serving PCI\|5G KPI PCell RF Serving SS-RSRP [dBm]\|5G KPI PCell RF Serving SS-SINR [dB]\|5G KPI PCell Layer2 MAC DL Throughput [Mbps]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 PCI\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 1 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 2 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 3 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 4 Filtered Tx BRSRP [dBm]\|Measurement PCell Neighbor Cell Top Set(Cell Level) Top 5 Filtered Tx BRSRP [dBm]\|5G KPI PCell Layer1 DL RB Num (Including 0) 2025-05-07 14:40:32.000000\|128.189771\|32.585001\|37\|502\|-85.59\|19.79\|1199.06\|333\|151\|911\|-\|-\|-100.87\|-103.39\|-115.03\|-\|-\|209.61 2025-05-07 14:40:33.000000\|128.189799\|32.584977\|8\|502\|-85.52\|18.87\|1061.08\|333\|151\|-\|-\|-\|-99.72\|-104.63\|-\|-\|-\|209.1 2025-05-07 14:40:34.000000\|128.189828\|32.58497\|28\|502\|-83.4\|16.94\|972.71\|333\|151\|-\|-\|-\|-105.87\|-107.73\|-\|-\|-\|195.19 2025-05-07 14:40:35.000000\|128.189863\|32.584958\|34\|502\|-84.8\|19.12\|825.89\|333\|151\|-\|-\|-\|-104.19\|-109.63\|-\|-\|-\|205.1 2025-05-07 14:40:36.000000\|128.189914\|32.584949\|10\|502\|-84.86\|19.88\|1033.84\|333\|151\|911\|572\|-\|-100.42\|-103.11\|-111.37\|-117.4\|-\|210.5 2025-05-07 14:40:37.000000\|128.189956\|32.584938\|13\|502\|-84.21\|19.66\|488.57\|333\|151\|400\|572\|591\|-97.55\|-105.37\|-108.54\|-121.73\|-124.95\|210.37 2025-05-07 14:40:38.000000\|128.190007\|32.584926\|11\|333\|-83.61\|16.86\|480.02\|502\|151\|591\|-\|-\|-95.26\|-108.46\|-114.13\|-\|-\|206.43 2025-05-07 14:40:39.000000\|128.190049\|32.584918\|26\|502\|-87.7\|11.99\|389.63\|333\|151\|911\|572\|480\|-90.82\|-97.14\|-112.34\|-111.34\|-119.26\|209.75 2025-05-07 14:40:40.000000\|128.190092\|32.584906\|6\|333\|-84.55\|19.02\|308.36\|502\|151\|911\|498\|767\|-93.41\|-102.09\|-104.14\|-117.42\|-123.45\|192.17 2025-05-07 14:40:41.000000\|128.190128\|32.584898\|36\|333\|-74.78\|24.56\|1152.76\|502\|151\|660\|498\|-\|-92.43\|-104.23\|-110.61\|-115.31\|-\|209.48 Engeneering parameters data as follows： gNodeB ID\|Cell ID\|Longitude\|Latitude\|Mechanical Azimuth\|Mechanical Downtilt\|Digital Tilt\|Digital Azimuth\|Beam Scenario\|Height\|PCI\|TxRx Mode\|Max Transmit Power\|Antenna Model 0000293\|0\|128.175745\|32.589441\|192\|9\|7\|0\|SCENARIO_9\|3.0\|660\|64T64R\|34.9\|NR AAU 2 0033237\|15\|128.190469\|32.586605\|170\|1\|12\|0\|DEFAULT\|25.5\|333\|32T32R\|34.9\|NR AAU 1 0033164\|12\|128.18998\|32.583475\|45\|6\|4\|0\|DEFAULT\|22.0\|151\|64T64R\|34.9\|NR AAU 2 0033237\|24\|128.189277\|32.585933\|150\|19\|6\|0\|SCENARIO_3\|81.0\|502\|64T64R\|34.9\|NR AAU 2 0033984\|4\|128.190373\|32.589416\|130\|10\|255\|0\|DEFAULT\|78.0\|480\|64T64R\|34.9\|NR AAU 2 0033918\|28\|128.193455\|32.584467\|304\|12\|9\|0\|SCENARIO_8\|42.7\|400\|32T32R\|34.9\|NR AAU 1 0033164\|5\|128.186945\|32.585951\|170\|5\|9\|0\|DEFAULT\|51.1\|591\|32T32R\|34.9\|NR AAU 3 0034039\|3\|128.191867\|32.578754\|290\|39\|255\|0\|DEFAULT\|123.0\|498\|64T64R\|34.9\|NR AAU 2 0033984\|1\|128.190397\|32.589396\|230\|10\|255\|0\|DEFAULT\|78.0\|767\|64T64R\|34.9\|NR AAU 2	C5

End of preview. Expand in Data Studio

No dataset card yet

Downloads last month: 19

Size of downloaded dataset files:

14.8 MB

Size of the auto-converted Parquet files:

3.11 MB

Number of rows:

3,264