Diameter协议在IMS网络Cx/Dx接口中的应用研究  

Research on Application of Diameter Protocol to Cx/Dx Interface in IP Multimedia Subsystem

作　　者：席剑霄 

机构地区：[1]公安部第一研究所,北京100048

出　　处：《移动通信》2015年第24期45-50,共6页Mobile Communications

摘　　要：Diameter协议是IETF(the Internet Engineering Task Force)制定的可应用于下一代核心网AAA协议,其被IMS网络中众多接口用作通信协议。本文主要研究了IMS网络中Cx/Dx接口的业务范畴,以及3GPP组织针对Cx/Dx接口特点在Diameter基础协议之上做出的应用扩展,指出了Cx/Dx接口的作用与意义,并对关键业务流程和信令消息进行了分析。Diameter protocol was drawn up by IETF（the Internet Engineering Task Force）. It is the AAA protocol oriented to the next generation of core network and adopted by multiple interfaces of IMS networks to serve as communication protocol. The business scope of Cx/Dx interface in IMS network was studied in this paper. In addition, the application extension made by 3GPP based on Diameter protocol according to Cx/Dx interface characteristics was introduced. The role and signif icance of Cx/Dx interface were pointed out. Finally, the key service process and signaling were analyzed.

关 键 词：DIAMETER协议 IMS网络 Cx/Dx接口 AAA 

分 类 号：TN915.81[电子电信—通信与信息系统]