基于DiffServ模型的IMS网络QoS研究  

IMS QoS Research Based on DiffServ Model

作　　者：王丽敏[1] 舒毅[1] 李秉智[1] 

机构地区：[1]重庆邮电大学,400065

出　　处：《微计算机信息》2008年第9期238-240,共3页Control & Automation

基　　金：重庆市自然科学基金项目(2005BB2063)

摘　　要：本文在IP多媒体子系统(IP Multimedia Subsystem,IMS)采用基于服务的本地策略模型的基础上,结合IP网络基于DiffServ的QoS(Quality of Service)模型,提出了一种基于DiffServ的IMS网络QoS控制机制。利用基于DiffServ QoS模型适用于大规模成熟网络、实施相对简单等特点来实现端到端的IMS网络QoS控制。主要涉及到的技术有QoS映射,策略控制,所涉及到的网元有GGSN,PDF,边界路由器等。To ensure end-to-end QoS, this paper presents some aspects of provisioning QoS in the IMS environment based on Differentiated Services (DiffServ), relatively simple but scalable IP-based QoS technology. This requires proper choices of QoS mapping, router configuration and admission control. The major network elements responsible for providing QoS support (GGSN, PDF, Edge Routers) based on DiffServ are also described in the paper.

关 键 词：IMS QOS DIFFSERV模型 

分 类 号：TN919.8[电子电信—通信与信息系统]