基于SIP的专用移动通信系统密钥分发方法  

Research on SIP Based Key Distribution Method of Private Mobile Communication System

作　　者：董锵 罗国明 朱磊 郭继斌 魏克峰 DONG Qiang;LUO Guo-ming;ZHU Lei;GUO Ji-bin;WEI Ke-feng(Institute of Communication Engineering, Army Engineering University of PLA, Nanjing 210000;Unit 78136 of PLA, Beijing 100093, China)

机构地区：[1]陆军工程大学通信工程学院,江苏南京210000 [2]中国人民解放军61623部队,北京100093

出　　处：《指挥控制与仿真》2020年第4期111-116,共6页Command Control & Simulation

摘　　要：IMS(IP多媒体子系统)是下一代网络的目标演进方向。SIP(会话初始化协议)是IMS网络的核心控制协议,用于建立、修改和终止多媒体会话。针对专用移动通信系统保密通信需求,讨论了现有几种密钥分发方式的机制与不足。将密钥分发功能作为一种新业务,采用IMS的业务触发机制实现,通过对SIP信令进行研究和扩展,提出了基于SIP的、与呼叫建立流程紧密结合新的密钥分发方案。通过比较得出,新方案具有适应IMS网络,流程简单、时延降低、业务易部署的优点。最后搭建实验环境,验证了新方法的可行性。IMS(IP Multimedia Subsystem)is the target evolution direction of next generation networks.SIP(Session Initiation Protocol)is the core control protocol of the IMS network for establishing,modifying,and terminating multimedia sessions.This paper discusses the mechanisms and deficiencies of several existing key distribution methods for the confidential communication requirements of private mobile communication systems.In this paper,the key distribution function is regarded as a new service,which is implemented by the service trigger mechanism of IMS.Through the research and extension of SIP signaling,a new key distribution scheme based on SIP and call setup process is proposed.By comparison,the new scheme has the characteristics of adapting to the IMS network,simple process,reduced delay,and easy service deployment.Finally,the experimental environment is set up to verify the feasibility of the new method.

关 键 词：会话初始化协议 专用移动通信系统 IP多媒体子系统 协议扩展 密钥分发 

分 类 号：TN918.4[电子电信—通信与信息系统]