基于DiffServ的IMS QoS保障机制研究  

Research of the QoS Security System in IMS Based on DiffServ

作　　者：杨抗[1] 何方白[1] 张溪 

机构地区：[1]重庆邮电大学,重庆400065 [2]云南省邮电规划设计院设计四所,云南昆明650000

出　　处：《通信技术》2007年第12期345-346,349,共3页Communications Technology

摘　　要：服务质量(QoS)是下一代网络(NGN)的关键问题,IMS作为3GPP提出的下一代网络的核心架构,需要提供可靠的QoS保障。文章提出了IMS中QoS的解决方案,并针对IMS网络层进行深入研究。通过区分业务(DiffServ)技术来提供网络层QoS支持,并对几种实现DiffServ模型的分组调度算法进行了探讨。QoS is the key factor of NGN. As the Core framework of NGN brought forward by 3GPP, IMS should offer credible QoS security. This paper pats forward a solution for QoS in IMS, and makes in-depth researchon the IMS network layer. Network layer QoS is supported by DiffServ technique. Also discussed are the Packet Scheduling Arithmetic for implementing DiffServ model.

关 键 词：IP多媒体子域 服务质量 区分业务 分组调度算法 

分 类 号：TN929.5[电子电信—通信与信息系统]