TD-SCDMA网络同步问题浅析

Introduction of TD-SCDMA Network Synchronization

随着TD-SCDMA的大规模商用,基于GPS授时的全网同步显得尤为重要。基站之间的精确同步是网络良好运行的基础,基站之间的失步将直接导致网络指标的明显恶化,影响用户感知。文章简要介绍了GPS授时原理,分析GPS失步导致的网络指标恶化情况,并为工程规范完善以及相关GPS替代方案提出建设思路。

As TD-SCDMA is commercialized,network synchronization based on GPS clock appears especially important.The precise synchronization between Node Bs is the base of a benign operational network.Asynchronous Node Bs may directly affect network KPI and seriously demolish end user experience.This paper briefly introduces GPS clock theory,analyzes network KPI deterioration due to asynchronous GPS clock and proposes some suggestions for the project specification and some other solutions instead of GPS clock.