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介绍MSRP协议在IP多媒体子系统中的应用,MSRP已经成为IMS中面向连接的数据应用的标准,然而在无线网络尤其是在网络质量相对差的环境中,由于无线网带宽低、易波动、链路易中断等问题,IMS中基于MSRP的数据应用的可用性大大降低.本文针对这个问题,在应用层提出了一种机制,结合MSRP协议,通过修改相关协议和交互流程,在遵循IMS和SIP协议相关标准的前提下,使得基于MSRP应用的消息可重传和续传,通过理论分析和仿真实验,证明了该机制的有效性;并在IMS终端SIPHello上应用该机制,在Ericsson的IMS核心网上进行了验证,实验表明本文的改进机制能大大提高IMS中基于MSRP的数据应用在无线网中的可用性.
Introducing the application of MSRP protocol in IP multimedia subsystem, MSRP has become the standard for connection-oriented data in IMS. However, in wireless networks, especially in networks with relatively poor network quality, due to the low bandwidth of the wireless network and the fluctuation of links, Louis interrupt and so on, IMS MS data applications based on the availability of greatly reduced.This paper addresses this issue at the application layer proposed a mechanism, combined with the MSRP protocol, by modifying the relevant protocols and interactive processes, in accordance with the IMS and SIP protocol Under the premise of related standards, the message based on MSRP can be retransmitted and renewed. The theoretical analysis and simulation experiments prove the effectiveness of this mechanism. And this mechanism is applied to IMS terminal SIPHello. On Ericsson’s IMS core network The experiments show that the improved mechanism in this paper can greatly improve the availability of MSRP-based data applications in wireless networks.