Advanced telecommunication systems are moving toward a high data transfer rate and wider bandwidth. The 5G communication network has recently been implemented for such aims. However, 5G networks operating with high operating frequency (typically above 20 GHz) could lead to impairments because of the atmospheric phenomena mainly precipitation and especially heavy rain. To address this, an optimum rain fade margin for the 5G network in Peninsular Malaysia is proposed using 77 sites of the rain-gauge network, which convert 1-h rain data to 1-min rain data by means of the international telecommunication union recommendation (ITU-R) P.837-7 model. Long-term rain attenuation statistics are obtained from ITU-R P.530-17 and the synthetic storm technique. The predicted rain attenuation is also presented in monthly statistics and in rain attenuation contour maps. The analysis showed that at 99.99% of link availability, the optimum rain fade margin operating at 26 GHz link should be in the range of 6.50 to 10 dB and 7 to 11 dB at 28 GHz link for a 5G network. Such information is useful for network operators and system engineers for the operation of 5G terrestrial microwave links in heavy rain regions.

先进的电信系统正朝着高数据传输率和更宽带宽的方向发展。5G 通信网络最近已为此目的实施。然而，以高工作频率（通常高于 20 GHz）运行的 5G 网络可能会由于大气现象（主要是降水，尤其是大雨）而导致损害。为了解决这个问题，马来西亚半岛 5G 网络的最佳雨衰余量建议使用 77 个雨量计网络站点，这些站点根据国际电信联盟的建议将 1 小时降雨数据转换为 1 分钟降雨数据（ ITU-R) P.837-7 模型。长期雨衰统计数据来自 ITU-R P.530-17 和合成风暴技术。预测的雨衰也出现在月度统计数据和雨衰等值线图中。分析表明，在 99.99% 的链路可用性下，5G 网络在 26 GHz 链路上运行的最佳雨衰余量在 28 GHz 链路上应在 6.50 至 10 dB 和 7 至 11 dB 的范围内。这些信息对于网络运营商和系统工程师在大雨地区运行 5G 地面微波链路非常有用。