Max Throughput for various bandwidth and numerology configurations

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

Graphical user interface, application Description automatically generated

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

  1. Set grid length as 1000m from Environment settings.

  2. 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 4‑26: gNB >Interface (5G_RAN) >Physical layer properties

  1. Set Tx_Antenna_Count as 2 and Rx_Antenna_Count as 1 in gNB propertis > Interface 5G_RAN > Physical Layer.

  2. Set Tx_Antenna_Count as 1 and Rx_Antenna_Count as 2 in UE propertis > Interface 5G_RAN > Physical Layer.

  3. 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 4‑27: Wired Link Properties

  1. 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 4‑28: Application properties

  1. Plots are enabled in NetSim GUI.

  2. 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 4‑29: 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 4‑30: Results Comparison with different Numerology vs. Bandwidth, throughput and Delay

As Numerology increases the throughput remains almost the same while delay reduces.