TD-MBMS与R4/HSDPA共网时隔离带设置分析

Analysis of the Optimum Isolation Distance between TD-MBMS and R4/HSDPA in TD-SCDMA Network

本文首先分析了TD-SCDMA网络中TD-MBMS与R4/HSDPA共存时存在的干扰,并从理论上探讨了如何设置隔离带宽度才能有效规避MBMS业务对R4/HSDPA性能的影响。然后,利用系统级仿真平台对各种场景进行模拟分析,并与理论值做了对比验证。本文提出了在保证网络性能前提下的最佳隔离距离的判断方法,并给出在中等负荷网络情况下隔离距离的建议值。

This article firstly analyzes the existential interference between TD-MBMS and R4/HSDPA in TD-SCDMA system. How to set the isolation distance is discussed deeply in order to avoid the influence to current network performance when MBMS service is deployed.Then, system-level simulation on various scenarios are completed in the purpose of comparing with theoretical value. The method to find the optimum isolation distance is put forward and also the quantitative results are provided in moderate network load scenarios.