5G系统中BBU与RRU之间前传接口(CPRI)带宽计算

example with rounded numbers is shown in the following table. Note that the figures in Table 6.1.2.2.2-1 are a maximisation of the needed bandwidth per number of antenna ports and frequency bandwidth.

Table 6.1.2.4.2-1 Examplesof maximum required bitrate on a transmission link for one possible PHY/RF based RAN architecture split

NOTE 1:  Peak bit rate requirement on a transmission link = Number of BS antenna elements *Sampling frequency (proportional to System bandwidth) * bit width (per sample)+ overhead. The calculation is made for sampling frequency of 30.72 Mega Sample per second for each 20MHz and for a Bit Width equal to 30.

后续会借助3GPP会议提案继续分析CU/DU其他切分方式下不同接口上的带宽需求，请继续关注。

另，本文参考了一些公开资料，部分图形直接采用了Anritsu文档中的内容(题名如下)，特此致谢。