5G SSB“1+X”立体覆盖的研究与应用

Research and Application of 5G SSB "1+X" Stereo Coverage

由于电联5G建网初期统一采用SSB水平7波束快速实现信号覆盖,小区主要用于覆盖道路和地面,多波束水平垂直联动复杂度高,资源开销大,无法兼顾高层楼宇的覆盖。为更好改善高层楼宇覆盖质量,通过SSB“1+X”组网简化波束结构,水平与垂直设计解耦,SSB“1+X”中的“1”波束提供优质的水平覆盖,“X”满足不同需求的垂直覆盖。经过与7波束测试对比,中高层楼宇RSRP平均提升4.9%,平均SINR平均提升34.6%,平均下行速率提升17.6%。“1+X”小区也吸纳更多用户和流量,大幅提升5G分流比以及5G资源使用效率。

In the initial stage of the China Unicom and China Telecom 5G network construction, the SSB horizontal 7 beams were used to achieve rapid signal coverage. The cells are mainly used to cover roads and the ground. The multi-beam horizontal and vertical linkage is complicated and expensive, and it cannot take into account the coverage of high-rise buildings. In order to better improve the coverage quality of high-rise buildings, the beam structure is simplified through SSB "1+X" networking, and horizontal and vertical design are decoupled. The "1" beam in SSB "1+X" provides high-quality horizontal coverage, "X" vertical coverage to meet different needs. After comparing with the 7 beams test, the RSRP of mid-to-high-rise buildings has increased by an average of4.9%, the average SINR has increased by an average of 34.6%, and the average downlink rate has increased by 17.6%. The "1+X" cell also absorbs more users and traffic, greatly improving the 5G offload ratio and the efficiency of 5G resource utilization.