5G双小区协作流动热点补偿研究

在通信用户数密集用户业务总量较多的UMi场景下,无线网络节点较多小区覆盖半径较小,用户在小区间移动导致小区间用户分布不均匀,原有用户数及业务量标准部署的5G异构网络相对稀疏,无法满足用户流动产生热点热时容量需求时,双小区协作流动热点补偿采用异构网络多点协作传输技术对小区进行补热,将处于相同移动状态的多个用户虚拟成一个以中心用户为中心的用户簇,建立3D MIMO流动热点模型,提出在两小区以用户最小传输速率为约束条件,最小化小区基站总功率的优化算法,得出高容量、高速率用户体验的"潮汐效应"解决方案。

Research on 5G Dual-Cell Cooperative Flow Hotspot Compensation

In the UMi scenario with intensive communication users and heavy traffic volume,there are many wireless network nodes and the coverage radius is small.Since user mobility leads to the uneven distribution among cells,the relatively sparse deployment of original 5G heterogeneous networks is unable to meet the capacity demands of hotspots caused by user mobility.Dual-cell cooperative flow hotspot compensation adopts the coordinated multipoint technologies in heterogeneous networks to serve the hotspots.This paper treats the multiple users with the same mobility state as a virtual cluster of users centered at the central user,and establishes a 3D MIMO hot flow model.Then an optimal algorithm is proposed for two cells to minimize the total power of base stations under the minimum constraint of user transmission rates.Finally,a "tidal effect" solution is obtained with high-capacity and high-rate user experience.