面向TD-LTE的PTN接入层演进策略研究

摘要

随着TD-LTE网络建设规模的加大,并且引入双频组网和载波聚合的技术,现有PTN接入层网络结构无法满足TD-LTE基站的回传需求.通过对PTN接入层网络现状以及TD-LTE业务发展需求的分析,对不同接入场景下的PTN接入层网络提出相应的方案,为LTE传送网接入层演进策略提供参考.%With the increase of the construction scale of LTE network and the introduction of dual frequency networking scheme and carrier aggregation, the structure of the existing PTN access network can't meet the demand of TD-LTE. In order to ifnd the different solutions of PTN access network according to the different scenarios, this paper analyzes the network structure of PTN access network and the development of LTE. The purpose is to provide reference mode for the evolution of PTN access network.