面向TD-LTE时代的移动城域传送网建设思路

为适应TD-LTE(Time Division Long Term Evolution)业务的承载需求, 对移动城域传送网现状、 TD-LTE主要技术特点及其承载需求、 面向TD-LTE移动城域传送网的技术选择进行了分析。指出面向TD-LTE移动城域传送网应全程采用PTN(Packet Transport Network)技术组网, 以PTN核心层支持L3-VPN(Layer3-Virtual Private Network)方案作为其具体组网模式, 在核心、 汇聚层引入OTN(Optical Transport Network)技术, 以OTN+PTN方式组建城域传送网。结合当前移动城域传送网现状, 提出面向TD-LTE的移动城域传送网的网络结构。给出了面向未来移动城域传送网接入、 汇聚和核心层的建设思路, 以期指导中国移动城域传送网建设。

Construction of Mobile Metropolitan Area Transmission Network in TD-LTE Times

In order to solve the TD-LTE (Time Division Long Term Evolution) business bearing demands, we analyzed the mobile metropolitan area transmission network status, the main technical characteristics of TD-LTE and its carring needs. And the technology choice of the TD-LTE oriented mobile metropolitan area transmission network, presents TD-LTE oriented mobile metropolitan area transmission network should fully adopt PTN (Packet Transport Network) Network technology, with the core layer PTN supporting L3-VPN (Layer3-Virtual Private Network) program as its specific network model, introduces OTN (Optical Transport Network) technology into the core and converge layer. Forms the mobile metropolitan area transmission network by OTN+PTN, then combines the mobile metropolitan area transmission network status. The network structure of TD LTE oriented mobile metropolitan area transmission networkwas presented. The construction thought of the future mobile metropolitan area transmission network access was provided, converge and core layer, to guide the construction of the China mobile metropolitan area transmission network.