5G共存分析中地物附加损耗模型研究

Research on clutter loss model in sharing studies of 5G

第五代(the 5th Generation,5G)移动通信共存分析需要传播模型的支撑,地物附加损耗模型是其中非常重要的一个模型.首先介绍了国际电信联盟(International Telecommunications Union,ITU)提供的统计地物附加损耗模型,并指出该模型的一些问题;然后,提出了一种确定性地物附加损耗预测模型,该模型主要考虑建筑物对传播的影响,通过预测过建筑物顶部的绕射、建筑物两侧的侧向绕射,并进行综合得到确定性地物附加损耗预测模型.本文提出的地物附加损耗预测模型可为5G系统的共存与兼容研究提供传播模型支撑.

Propagation models are important to sharing studies of the 5th generation（5G）mobile communication, while clutter loss model is one of the most significant. Statistical model of clutter loss by International Telecommunications Union （ITU） is at first introduced with analysis of its problems. Then a deterministic model is proposed for the prediction of clutter loss when the information of the transmitter, receiver and surrounded buildings is known, the dominant mechanism of which is diffraction of buildings that is mainly considered. By predicting the diffraction of EM wave from top and lateral sides of the building, the clutter loss can be obtained in a synthetic manner. The clutter loss model presented in this paper can be used in the sharing and compatibility studies of IMT systems.