5G新通话DC媒体处理兼容方案  

5G new calling DC media processing compatible solution

作　　者：刘蕾 刘晨 吴倩 翟振辉 王洋 LIU Lei;LIU Chen;WU Qian;ZHAI Zhen-hui;WANG Yang(China Mobile Group Design Institute Co.,Ltd.,Beijing 100080,China;China Mobile Group Co.,Ltd.,Beijing 100033,China)

机构地区：[1]中国移动通信集团设计院有限公司,北京100080 [2]中国移动通信集团有限公司,北京100033

出　　处：《电信工程技术与标准化》2024年第9期64-71,共8页Telecom Engineering Technics and Standardization

摘　　要：网络上SIP AS对DC媒体协商的支持不足,导致需要对SIP AS进行大规模的升级改造,影响新业务的上线时间。由于SIP AS的建设涉及多方,短时间内无法全部改造以支持DC媒体协商功能,这成为新通话业务上线的主要障碍。本文提出了一种5G新通话DC媒体处理兼容方案,该方案通过IMS核心网处理DC媒体,避免了对现有SIP AS的改造需求。IMS核心网根据SIP AS的能力选择处理方案,对于不支持DC的SIP AS则代为处理,从而减少了新通话业务上线对SIP AS改造的依赖。该方案具有兼容性强、灵活性高、扩展性好和成本效益明显等优点,能够加速5G新通话业务的部署,同时减少了对SIP AS改造的依赖和成本。该方案为5G新通话业务的快速上线提供了可行的解决方案。The lack of support for DC media negotiation in the SIP AS on the network has resulted in the need for large-scale upgrades to the SIP AS,affecting the go-live time of the new service.Since the construction of SIP AS involves multiple parties,it is not possible to retrofit all of them to support the DC media negotiation function in a short time,which becomes a major obstacle to the on-line of new call services.In this paper,we propose a 5G new calling DC media processing compatibility scheme,which avoids the need to retrofit the existing SIP AS by processing DC media through the IMS core network.The IMS core network selects the processing scheme according to the capability of the SIP AS,and processes on behalf of the SIP AS that does not support DC,thus reducing the reliance on the retrofit of the SIP AS for the go-live of new call services.With the advantages of strong compatibility,high flexibility,good scalability,and obvious cost-effectiveness,this solution can accelerate the deployment of 5G new calling services,while reducing the reliance on and cost of SIP AS modification in the existing network.The solution provides a feasible solution for the rapid go-live of 5G new calling services.

关 键 词：5G新通话 VoNR VoLTE SIP AS 

分 类 号：TN915[电子电信—通信与信息系统]