4G时代PTN流量控制与规划

4G PTN Flow Control and Planning

从3G时代开始,中国移动选择PTN网络替代传统SDH网络作为主要承载工具。PTN的分组传输技术较好地解决了整个网络IP化趋势对传输网提出的需求,同时较好地支持2M业务,很好地解决了中国移动在发展3G的同时确保2G语音业务的优势。但是PTN替换SDH并没有让环网的带宽得到提升,汇聚层的带宽还是10GE,大部分接入层带宽还是GE级别并没有显著提升。在OTN没有进一步下层,POTN没有现网大规模应用之前,文章拟通过从网络规划、业务模型和流量控制等方面进行研究,更加合理有效地实现对现有网络带宽的利用,提升带宽利用效率。

China mobile select PTN instead of SDH as the main carrying tools from 3rd-generation. The packet of PTN transmission technology better solved the need of the whole IP trend for the proposed transmission network, and better sup- port 2M business, that is also very good solution to China mobile in the development of 3rd-generation while ensuring the 2G voice advantage. However, it doesn＇t improve the ring network bandwidth, the bandwidth of the convergence still 10 GE, most of the access bandwidth on GE level was not increased. Without OTN further lower,and POTN is now between scale application, this article studies from the aspects of network planning, business model and flow control, to achieve a more reasonable and effective implementation of existing network bandwidth utilization, and improve the bandwidth efficiency.