摘要
为了满足在以IP作为骨干网协议,以通用移动通信系统(UMTS)作为接入网的异构网络环境中视频传输的服务质量要求。提出了基于区分服务的视频传输服务质量机制,给出了区分服务业务等级到视频数据帧和区分服务业务等级到UMTS业务类别的映射关系。使用仿真的实验环境对给定的服务质量机制进行了测试,实验结果表明该服务质量机制能有效地提高IP-UMTS异构网络中视频传输的服务质量。
To meet the need of quality of service （QoS） for video traffic over a heterogeneous network in which an IP network acts as trunk network and a universal mobile telecommunication system （UMTS）network acts as an access network, a quality of service mechanism for video traffic based on Differentiated Services （DiffServ） is proposed, and the mapping relation from the DiffServ classes to the video data frame and to the UMTS traffic classes is given. The quality of service mechanism is tested in a simulation environment, The simulation experimental results show that the quality of service mechanism can effectively improve the QoS of video traffic in IP-UMTS heterogeneous network
出处
《通信技术》
2008年第12期201-203,共3页
Communications Technology
关键词
区分服务
服务质量
视频
通用移动通信系统
differentiated services
quality of service
video
universal mobile telecommunication system
