GB/T28181协议NAT穿越方案研究  

NAT traversal scheme based on GB/T28181 protocol

作　　者：孟卿卿[1] 王建勇[1] MENG Qing-qing;WANG Jian-yong(Department of Information Technology,First Research Institute of Ministry of Public Security,Beijing 100048,China)

机构地区：[1]公安部第一研究所信息技术事业部

出　　处：《信息技术》2020年第3期148-152,共5页Information Technology

摘　　要：为解决GB/T28181协议在互联网环境下NAT穿越问题,研究提出GB/T28181国标协议的一种NAT穿越方案,并将该方案应用于基于GB/T28181协议的互联网视频云服务平台。该方案基于UDP/TCP打洞方法实现GB/T28181协议SIP信令流和RTP媒体流的NAT穿越,进一步提出“流会话标识”定义用于辅助实现RTP媒体流的NAT穿越。实验证明该方案NAT穿越效果良好,兼容性强,且实现复杂度较低。In order to solve the problem of NAT traversal of GB/T28181 protocol,a NAT traversal scheme based on GB/T28181 national standard is proposed,and applied to Internet video-cloud service platforms adopting GB/T28181 protocol.The goal of the NAT traversal of the SIP signaling stream and the RTP media stream is realized based on the technology of UDP/TCP hole punching,and the“stream session identifier”is proposed to realize the NAT traversal of the RTP media stream.It is proved by the experiments that the proposed scheme is good at NAT traversal and compatibility,with low implementation complexity.

关 键 词：GB/T28181国标协议 NAT穿越 SIP协议 RTP协议 流会话标识 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]