IMS应用层连续性研究

吕新荣; 廖建新; 朱晓民; 武家春

doi:10.3724/SP.J.1146.2006.00143

IMS应用层连续性研究

doi: 10.3724/SP.J.1146.2006.00143

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(2003001 3006)，电子信息产业发展基金(基于3G的移动业务应用系统)和电子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: 2006-02-10
- 修回日期: 2006-09-04
- 刊出日期: 2007-09-19

Research on Application Continuity in IMS

摘要

摘要: 应用层移动性对在移动环境下的IP应用很重要，底层的移动性支持保证了切换中数据传输的平滑性，而应用层移动性要保证上层应用在移动中正确收发数据。文中提出了移动扩展SOCKET，即MESOCK(Mobile Extension SOCKET)来实现应用层的移动性。它允许应用数据传送中变换数据传输的源和目的IP地址，使得数据可以直接经路由到达目的地而不是采用隧道的方式。能够很好地配合底层的IP地址切换，即终端地址一旦变化，应用层即启用新的IP地址来收发数据，而不是通过数据隧道发送数据。并在地址切换过程中很好地保持连接的持续性，从而保证服务的连续性和数据传输的完整性。仿真结果证明MESOCK可以很好地实现这一目标。
- 移动通信;应用移动性;服务连续性;IMS;TCP连接
Abstract: Application layer mobility is important for IP application under mobile environment. The support of under layer mobility guarantees the smooth of data transaction in handoff, while application layer mobility guarantees higher layer application can transfer and receive data correctly in handoff. MESOCK (Mobile Extension SOCKET) is introduced for application layer mobility, which is an extension of TCP/UDP and let running session using new IP address to transfer and receive data after getting it. So it can let data go to the destination not be forwarded by tunnel. It makes the datas integrity and continuity in the IP changing process. The result of simulation proves that the MESOCK can get the goal well.

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参考文献(1)

3GPP, TS 23.228 V6.9.0. IP multimedia subsystem (IMS), 2005-03.[2]IETF, RFC 3261. SIP: Session Initation Protocol, June 2002.[3]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.[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]Kristiansson J and Parnes P. Application-layer mobility support for streaming real-time media. IEEE Wireless Communications and Networking Conference 2004 (WCNC 2004), Atlanta, GA USA, 21-25 March, 2004, Vol.1: 268-273.[6]Maltz D A and Bhagwat P. MSOCKS: An architecture fortransport layer mobility[J].17th IEEE International Conference on Computer Communications 1998 (INFOCOM98), San Francisco, CA USA, 29 March-2 April.1998, Vol.3:1037-1045[7]IETF, RFC 2960. SCTPR. Stewart, Stream control transmission protocol, October 2000.

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