4.9 GHz异帧干扰问题研究

相对2.6 GHz频段,4.9 GHz频段可以通过灵活的帧结构配置满足上行大带宽的行业应用需求,但异帧结构组网可能导致基站和终端之间存在交叉时隙干扰,因此研究4.9 GHz的异帧干扰问题是非常必要的。基于3D-UMa传播模型,研究了4.9 GHz频段1D:3U:1S和5D:3U:2S帧结构配置下的交叉时隙干扰问题,并结合当下行业网需求现状给出了不同场景下的4.9 GHz帧结构按需配置建议,以及干扰管理解决方法,为5G行业网帧结构部署和站址规划提供了理论指导。

Research on Heterogeneous Frame Interference in 4.9 GHz Frequency Band

Compared with the 2.6 GHz frequency band, the 4.9 GHz frequency band can achieve the requirements of large uplink bandwidth for industry applications with flexible frame structure configurations. However, heterogeneous frame structures in 4.9 GHz network might cause the cross-slot interference between the base stations and terminals. Hence it is necessary to study the heterogeneous frame interference problem in 4.9 GHz frequency band. Based on the 3 D-UMa propagation model, this paper firstly investigates the cross-slot interference problem between the 1 D: 3 U: 1 S and 5 D: 3 U: 2 S frame structures in 4.9 GHz frequency band. Then, combining with the current demand status of industry networks, the suggestions on the on-demand configurations of 4.9 GHz frame structure are given in different scenarios, as well as interference management solutions. The results provide theoretical guidance for 5 G industry network frame structure deployment and site planning.