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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。
In order to meet the service quality requirements of video transmission in heterogeneous network environments using IP as the backbone protocol and Universal Mobile Telecommunications System (UMTS) as the access network, A service quality mechanism of video transmission based on DiffServ is proposed. The mapping relationship between service level of service and video data frame and service level of differentiated service to UMTS is given. The experimental results show that the QoS mechanism can effectively improve the quality of video transmission in IP-UMTS heterogeneous networks.