Open NetSim, Select Examples ->5G NR ->Max Throughput vs Bandwidth and Numerology then click on the tile in the middle panel to load the example as shown in below screenshot
Figure 4‑33: List of scenarios for the example of Max Throughput vs Bandwidth and Numerology
The following network diagram illustrates, what the NetSim UI displays when you open the example configuration file.
Figure 4‑34: Network set up for studying the Max Throughput vs Bandwidth and Numerology
Settings done in example config file
Bandwidth CA1=10 and CA2=10 Sample
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Set grid length as 1000m from Environment settings.
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Go to gNB properties à Interface (5G_RAN), set the following properties as shown below Table 4‑26.
| Properties | |
|---|---|
| Physical Layer Properties | |
| CA_Type | INTER_BAND_CA |
| CA_Configuration | CA_2DL_1UL_n39_n41 |
| Frequency Range | FR1 |
| MCS Table | QAM256 |
| CQI Table | TABLE2 |
| Pathloss Model | None |
Table 4‑28: gNB >Interface (5G_RAN) >Physical layer properties
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Set Tx_Antenna_Count as 2 and Rx_Antenna_Count as 1 in gNB propertis > Interface 5G_RAN > Physical Layer.
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Set Tx_Antenna_Count as 1 and Rx_Antenna_Count as 2 in UE propertis > Interface 5G_RAN > Physical Layer.
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Go to Wired link properties and set the following properties as shown below Table 4‑27.
| Wired Link Properties | |
|---|---|
| Uplink_Speed (Mbps) | 100,000 |
| Downlink_Speed (Mbps) | 100,000 |
| Uplink & Downlink BER | 0.0000001 |
Table 4‑29: Wired Link Properties
- Go to Application properties and set the following properties as shown below Table 4‑28.
| Application Properties | |
|---|---|
| Source_Id | 10 |
| Destination_Id | 8 |
| Transport Protocol | UDP |
| Start_Time | 1s |
| Packet_Size | 1460 Bytes |
| Inter_Arrival_time | 1μs |
| Generation Rate | 10,000 Mbps |
Table 4‑30: Application properties
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Plots are enabled in NetSim GUI.
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Run Simulation for 1.01s, after simulation completes go to metrics window and note down throughput and delay value from application metrics.
For the first time set Numerology value as 1 in gNB properties and change CA1 bandwidth value as 10, 20, 30, and 40, CA2 bandwidth value as 10, 20, 30, 40, 50, 60, 80, 90, and 100 note down throughput.
For the second time set CA1 bandwidth value as 40, CA2 bandwidth value as 50 in gNB properties and change the Numerology value as 0, 1, and 2 and note down throughput.
Result:
| Numerology = 1 | |
|---|---|
| Bandwidth | Throughput (Mbps) |
| CA1=10, CA2=10 | 120.30 |
| CA1=20, CA2=20 | 259.29 |
| CA1=30, CA2=30 | 405.29 |
| CA1=40, CA2=40 | 550.12 |
| CA1=40, CA2=50 | 643.56 |
| CA1=40, CA2=60 | 744.01 |
| CA1=40, CA2=80 | 934.40 |
| CA1=40, CA2=90 | 1031.34 |
| CA1=40, CA2=100 | 1128.28 |
Table 4‑31: Results Comparison with constant Numerology vs. Bandwidth and throughput
| Bandwidth | Numerology | Throughput (Mbps) | Delay (μs) |
|---|---|---|---|
| CA1=40, CA2=50 | 0 | 581.66 | 5104.65 |
| CA1=40, CA2=50 | 1 | 643.56 | 4903.86 |
| CA1=40, CA2=50 | 2 | 650.57 | 4808.65 |
Table 4‑32: Results Comparison with different Numerology vs. Bandwidth, throughput and Delay
As Numerology increases the throughput remains almost the same while delay reduces.