IMS中基于时延的E2E QOS控制机制  

An E2E QOS Control Mechanism Based on Session Delay in IMS

作　　者：林晖[1] 万晓榆[2] 樊自甫[2] 

机构地区：[1]福建师范大学数学与计算机科学学院,福建福州350007 [2]重庆邮电学院下一代网络应用技术研究所,重庆400065

出　　处：《福建师范大学学报（自然科学版）》2007年第4期52-55,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：重庆市教委科学技术研究项目(KJ050512KJ050513);重庆市自然科学基金资助项目(CSTC2005BB2054)

摘　　要：分析了IMS现有的基于策略的QOS(服务质量)机制,提出了一种新的基于策略的E2E(端到端)QOS机制.新的机制主要通过SIP协议的扩展、PDF(策略判决功能)功能的改进实现IMS中的各个层次间的相互协作.仿真结果表明,新机制能够有效地改善IMS中的会话建立时延.IMS(IP Multimedia Subsystem) is proposed by 3GPP to provide real-time multimedia services.In the future,the multimedia services will give priority to video,audio and mixture of video and audio,so they need high quality on real-time and delay.The traditional QOS(Quality of Service) mechanism based on policy is analyzed,and a new QOS mechanism based on policy is proposed.The new mechanism improves the function of PDF(Policy Decision Function) and does some extension to the SIP,so implements the cooperation be...

关 键 词：SIP 端到端服务质量 IP多媒体子系统 

分 类 号：TN919.8[电子电信—通信与信息系统]