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针对CDMA2000 1X EV-DO无线接入环境,采用数学分析方法试图对互联网协议多媒体子系统(IMS)中的用户会话建立时延进行定量分析.详细分析了无线链路协议在数据链路层上产生的传输时延,同时分析了上层重传机制对传输时延的影响.分析结果表明,数据链路层使用无线链路协议、传输层使用用户数据报协议、应用层使用会话初始化协议所产生的会话建立时延最小.
Aiming at the CDMA2000 1X EV-DO wireless access environment, a mathematical analysis method is used to quantitatively analyze the delay of user session establishment in Internet Protocol Multimedia Subsystem (IMS) .A detailed analysis of the wireless link protocol generated at the data link layer , And analyzed the impact of the upper retransmission mechanism on the transmission delay.The results show that the data link layer using the wireless link protocol, the transport layer using user datagram protocol, the application layer using the session initialization protocol generated Session establishment delay minimum.