5G NR 吞吐量计算 and 4G LTE 吞吐量计算

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5G NR Throughput

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References
• 3GPP TS 38.306 V15.2.0 (2018-06)

➤J : number of aggregated component carriers in a band or band combination
➤Rmax : 948/1024
• For the j-th CC, Vlayers(j) is the maximum number of layers
➤Qm(j) : Maximum modulation order, Qm is 2 for QPSK, 4 for 16QAM, 6 for 32QAM, 8 for 256QAM
➤f(j) : Scaling factor, can take any value from 1/0.8/0.75/0.4
➤μ : 5G NR Numerology, can take any value from 0 to 5.
➤Tsμ : Average OFDM symbol duration in a subframe for μ value,
• Tsμ = 10-3/(14*2μ).
➤N[PRB BW(j),μ ]: Maximum RB Allocation in bandwidth, BW(j)with numerology (μ),
BW(j) is UE supported maximum Bandwidth in given band or in band combinations.
REs are grouped into PRBs (Physical Resource Blocks). Each PRB consists of 12 Subcarriers.
➤OH(j) : Overhead which takes any of the following values.
• [0.14] → Frequency Range FR1 for DL
• [0.18] → Frequency Range FR2 for DL
• [0.08] → Frequency Range FR1 for UL
• [0.10] → Frequency Range FR2 for DL

每个 UE 信道带宽和副载波间隔的最大传输带宽配置 NRB 在下表中指定：

简单计算公式
吞吐量公式包含多个因素，包括网络物理层的配置：

Throughput (Mbps)=1e-6×Bandwidth (MHz)×MIMO Layers×log2​(Modulation Order)×Scaling Factor f(j)×(Coding Rate/(1024/948)​)×Resource Blocks×12×14×10×(1000/10)​×(1−0.14)
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简单示例计算

对于具有 100 MHz 带宽、4 个 MIMO 层、256QAM 调制、比例因子为 1、编码速率为 0.948 和 273 个资源块的网络配置，吞吐量为:

1e-6×100×4×log2(256)×1×(0.948/(1024/948))×273×12×14×10×(1000/10)×(1−0.14)​≈2,337 Mbps
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常见问题

哪些因素会影响 5G NR 吞吐量？

带宽、MIMO层、调制顺序、比例因子、编码速率和资源块数量是关键因素。
为什么调制顺序在吞吐量计算中很重要？

调制顺序决定了每个符号可以传输多少位，直接影响数据速率。
MIMO 技术如何影响吞吐量？

MIMO技术使用多个发射和接收天线来提高通信性能，从而显著提高吞吐量。

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4G LTE Throughput

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References

How to calculate LTE throughput

Throughput in LTE

简单计算公式：

基于 MCS(Modulation and Coding Scheme) ， PRB（物理资源块）的数量和 MIMO 天线的数量。

简单示例计算：
Input : MCS = 10, PRBs = 20, Number of MIMO Antennas = 2
Outputs : LTE throughput = 6.22 Mbps

推荐计算工具：

5g-nr-throughput-calculator

4g-lte-throughput-calculator

5g-speed

4g-speed

学习网站：

5G TECHNOLOGY AND NETWORK HARDWARE

5G HUB