IMS域的切换研究

吕新荣; 廖建新; 王纯; 朱晓民

doi:10.3724/SP.J.1146.2005.01654

IMS域的切换研究

doi: 10.3724/SP.J.1146.2005.01654

基金项目:

国家杰出青年科学基金(60525110)，新世纪优秀人才支持计划(NCET-04-0111)，高等学校博士学科点专项科研基金(20030013006)和信息产业发展基金重点项目(下一代网络核心业务平台)资助课题

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出版历程
- 收稿日期: 2005-12-22
- 修回日期: 2006-06-12
- 刊出日期: 2007-08-19

Research on IMS Handover

摘要

摘要: 基于IMS(IP Multimedia Subsystem)域的通信中由于切换层次的增多导致切换时间的增加，从而使得服务的中断时间加长，这影响了移动中应用的服务质量。在UMTS(Universal Mobile Telecommunication System)R6规范中的切换流程中，跨网络切换采用SGSN(Serving GPRS Support Node)之间的切换而GGSN(Gateway GPRS Support Node)不变，这会导致数据流在IP(Internet Protocol)网络中的迂回，并且多条信令跨网络传输影响了切换的速度，增加了网络流量和端到端延时。该文在现有切换流程上提出了跨GGSN的切换流程，缩短了媒体流在切换过程中的中断时间，并减少了漫游状态下的端到端媒体流引起的网络流量和端到端的数据延迟。
- 切换;3G;IMS
Abstract: The multi-layers handover in communication based on IMS(IP Multimedia Subsystem)results in the long interruption time of application, which reduces the Quality of Service (QoS) of the system. The process of handover signaling in R6 adopts the handover between SGSNs when one MS moves from one network to another, which will lead to the bypass of the data among the networks and will aspect the efficient of the handover and add the network traffic. The process of handover is improved by a hander between GGSN. It can fast the handover process and reduce the end-to-end delay for the roaming MS and the traffic of the network.

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参考文献(1)

3GPP. IP Multimedia Subsystem (IMS). V6.9.0, 2005-03.[2]Rosenberg J, Schulzrinne H, and Camarillo G, et al.. SIP: Session Initiation Protocol. RFC 3261. June 2002.[3]Idoue A, Kubo T, Yokota H, Hasegawa T, and Ohashi M. Global roaming among Mobile IP networks operated by different administrative domains--Support of incoming/ outgoing calls for mobile nodes having private addresses. IEEE Wireless Communications and Networking Conference 2003(WCNC2003), New Orleans, LA USA., 16-20 March 2003, Vol.3: 1993-1998.[4]Banerjee N, Basu K, and Das S K. Hand-off delay analysis in SIP-based mobility management in wireless networks. Proceedings. for International Parallel and Distributed Processing Symposium, 2003.( IPDPS03), Nice, France, 22-26 April 2003: 224-231.[5]Nakajima N, Dutta A, Das S, and Schulzrinne H. Handoff delay analysis and measurement for SIP based mobility in IPv6. IEEE International Conference on Communications 2003 (ICC'03), Anchorage Alaska, USA, 11-15 May 2003, Vol. 2: 1085-1089.[6]Kwon T T, Gerla M, and Das S. Mobility management for VoIP service: Mobile IP vs. SIP. IEEE Wireless Communications, 2002, 9(5): 66-75.[7]Fathi H, Chakraborty S, and Prasad R. Mobility management for VoIP: evaluation of mobile IP-based protocols. IEEE International Conference on Communications 2005(ICC 2005), Seoul, Korea, 16-20 May 2005, Vol.5: 3230-3235.[8]Akyildiz I F, Jiang Xie, and Mohanty S. A survey of mobility management in next-generation all-IP-based wireless systems. IEEE Wireless Communications, 2004, 11(4): 16-28.[9]Fathi H, Prasad R, and Chakraborty S. Mobility management for VoIP in 3G systems: evaluation of low-latency handoff schemes[J].IEEE Wireless Communications.2005, 12(2):96-

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