Applicable Versions NetSim Standard NetSim Pro

 Applicable Releases v12.2 v13

The link rate adapts based on the SNR.

From SNR, Eb / N0  is got by converting the logarithmic decibel scale SNR to a linear power scale and normalizing it.

Then Efficiency = log2(1 + Eb/N0), where Eb/No is signal over noise.

Then a table is looked up to get CQI from efficiency.  These are the tables referenced in 5.2.1.1. Based on the CQI index the equivalent modulation and code rate are decided.

And then based on MCS. the number of information bits is got from the Transport Block Size Determination calculations in standard 38.214 - 5.1.3.2.

For additional understanding open the 5G technology library manual

and see example 4.3. A user would get an idea of how MCS is chosen by looking at the results table of that example.

In v13.0

FR1 - Variation of path loss, SNR, Efficiency, CQI, Modulation, code rates, and throughput as the distance of the UE from the gNB is increased:

 Distance(m) Pathloss (dB) SNR (dB) Downlink Efficiency (dB) CQI Index Modulation Code Rate R*[1024] (CQI) Code Rate R*[1024] (MCS) Throughput (Mbps) 100 97.34 37.46 12.44 15 64QAM 948 772 505.23 200 109.05 25.74 8.55 15 64QAM 948 772 505.23 300 115.93 18.86 6.28 15 64QAM 948 772 505.23 400 120.80 13.98 4.70 13 64QAM 772 772 453.74 500 124.59 10.20 3.52 11 64QAM 567 567 293.00 600 127.68 7.11 2.61 9 16QAM 616 616 185.89 700 130.30 4.49 1.93 8 16QAM 490 490 131.40 800 132.56 2.22 1.41 6 QPSK 602 602 80.67 900 134.56 0.22 1.03 5 QPSK 449 449 52.06 1000 136.35 -1.55 0.76 4 QPSK 308 308 36.68

FR 2 - Variation of path loss, SNR, Efficiency, CQI, Modulation, code rates, and throughput as the distance of the UE from the gNB is increased:

 Distance(m) Pathloss (dB) SNR (dB) Downlink Efficiency (dB) CQI Index Modulation Code Rate R*[1024](CQI) Code Rate R*[1024] (MCS) Throughput (Mbps) 50 109.10 21.72 7.22 15 64QAM 948 772 4167.19 100 120.68 10.13 3.50 11 64QAM 567 567 3127.90 150 127.53 3.28 1.64 7 16QAM 378 378 1329.18 200 132.40 -1.58 0.76 4 QPSK 308 308 522.09

In v12.2

FR1 - Variation of path loss, SNR, Efficiency, CQI, Modulation, code rates, and throughput as the distance of the UE from the gNB is increased:

 Distance(m) Pathloss (dB) SNR (dB) Downlink Efficiency (dB) CQI Index Modulation Code Rate R*[1024] (CQI) Code Rate R*[1024] (MCS) Throughput (Mbps) 100 97.34 40.47 13.44 15 64QAM 948 772 506.39 200 109.05 28.75 9.55 15 64QAM 948 772 506.39 300 115.93 21.88 7.28 15 64QAM 948 772 506.39 400 120.80 17.00 5.68 15 64QAM 948 772 506.39 500 124.59 13.21 4.46 13 64QAM 772 772 505.37 600 127.68 10.12 3.50 12 64QAM 666 666 380.01 700 130.30 7.50 2.73 10 64QAM 466 466 239.04 800 132.56 5.24 2.12 9 16QAM 616 616 188.59 900 134.56 3.24 1.64 8 16QAM 490 490 135.04 1000 136.35 1.45 1.26 7 16QAM 378 378 122.21

FR 2 - Variation of path loss, SNR, Efficiency, CQI, Modulation, code rates, and throughput as the distance of the UE from the gNB is increased:

 Distance(m) Pathloss (dB) SNR (dB) Downlink Efficiency (dB) CQI Index Modulation Code Rate R*[1024](CQI) Code Rate R*[1024] (MCS) Throughput (Mbps) 50 109.10 24.73 8.22 15 64QAM 948 772 4192.18 100 120.68 13.15 4.44 13 64QAM 772 772 4192.18 150 127.53 6.30 2.40 9 16QAM 616 616 2278.53 200 132.40 1.43 1.26 7 16QAM 378 378 1352.78

Related Articles:

how-can-i-log-snr-cqi-mcs-into-a-file-in-netsim-5g-lte-