IMS会话边缘控制器的设计和实现
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摘要
IP多媒体子系统(IP Multimedia Subsystem,IMS)是一种全新的提供多媒体业务的网络架构,它能够满足用户更新颖、更多样化的多媒体业务需求。3GPP R5和R6版本指出,IMS需要支持IPv6和IPv4作为其地址协议,但是由于IPV6的部署速度远远慢于预期。随着IMS网络和IMS终端向IPV6的过渡和演进,IPV4和IPV6的网络和终端将长期共存。这种共存带来了网络和终端之以及网络与网络之间的互通问题。
该论文从目前IMS的网络现状出发,在充分研究了传统IPv4与IPv6互通解决方案以及3GPP相关标准后,提出了在IMS网络与IMS终端之间和IMS网络之间引入会话边缘控制器(网络与终端之间称为Session Border Controller,简称SBC,网络之间称为InterconnectedSession Border Controller,简称I-SBC),从而解决了不同IP能力的网络和终端以及网络与网络之间的互通问题。论文提出了SBC/I-SBC在IMS向IPv6过渡过程中的四大功能:
1.支持不同IP能力的终端和网络互通;
2.充当NAT服务器;
3.支持网络拓扑信息及用户信息安全性;
4.呼叫能力探测及促进IPv6部署。
在SBC原型的设计和实现阶段,论文基于JAIN-SIP v1.1实现了SBC四大功能,并将其成功的部署在IMS模拟平台上。
IMS (IP Multimedia Subsystem) is a new network architecture for providing multimedia service in the next generation wireless networks. The 3GPP R5 and R6 standards have specified the use of IPv6 and IPv4 for the IMS. However, the speed and scale of IPV6 deployment of network and clients are both under expectation. As the transition and migration to IPv6 of the core and IMS clients, the intercommunication between core and clients with different IP capability must be solved.
In this paper, classical technology on migration from IPv4 to IPv6 and relevant 3GPP standards are fully investigated. Considering development of current IMS network, Session Border Controller (SBC) between IMS network and clients and Interconnect Session Border Controller between different IMS network are introduced to handle the above isuses. The entity is aimed to implement the following functions:
1. Support intercommunication between core network and clients with different IP capacity.
2. Support NAT traversal
3. Support topology information security and user information security
4. IPv6 promotion
In this paper, SBC/I-SBC prototype is successfully implemented based on JAIN-SIP v1.1 and deployed in IMS test platform as well.
该论文从目前IMS的网络现状出发,在充分研究了传统IPv4与IPv6互通解决方案以及3GPP相关标准后,提出了在IMS网络与IMS终端之间和IMS网络之间引入会话边缘控制器(网络与终端之间称为Session Border Controller,简称SBC,网络之间称为InterconnectedSession Border Controller,简称I-SBC),从而解决了不同IP能力的网络和终端以及网络与网络之间的互通问题。论文提出了SBC/I-SBC在IMS向IPv6过渡过程中的四大功能:
1.支持不同IP能力的终端和网络互通;
2.充当NAT服务器;
3.支持网络拓扑信息及用户信息安全性;
4.呼叫能力探测及促进IPv6部署。
在SBC原型的设计和实现阶段,论文基于JAIN-SIP v1.1实现了SBC四大功能,并将其成功的部署在IMS模拟平台上。
IMS (IP Multimedia Subsystem) is a new network architecture for providing multimedia service in the next generation wireless networks. The 3GPP R5 and R6 standards have specified the use of IPv6 and IPv4 for the IMS. However, the speed and scale of IPV6 deployment of network and clients are both under expectation. As the transition and migration to IPv6 of the core and IMS clients, the intercommunication between core and clients with different IP capability must be solved.
In this paper, classical technology on migration from IPv4 to IPv6 and relevant 3GPP standards are fully investigated. Considering development of current IMS network, Session Border Controller (SBC) between IMS network and clients and Interconnect Session Border Controller between different IMS network are introduced to handle the above isuses. The entity is aimed to implement the following functions:
1. Support intercommunication between core network and clients with different IP capacity.
2. Support NAT traversal
3. Support topology information security and user information security
4. IPv6 promotion
In this paper, SBC/I-SBC prototype is successfully implemented based on JAIN-SIP v1.1 and deployed in IMS test platform as well.
引文
[1] 3GPP, TS 23.228 V7.4.0, "IP Multimedia Subsystem (IMS); Stage 2 (Release 7)," June 2006.
[2] J. Rosenberg, H. Schulzrinne, G. Camarilloet, et al., "SIP: Session Initiation Protocol," IETF RFC 3261, June 2002.
[3] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model with Session Description Protocol (SDP)," RFC 3264, June 2002.
[4] Handley, M. and V. Jacobson, "SDP: Session Description Protocol," RFC 2327, April 1998.
[5] J. Hautakorpi, Ed. G. Camarillo Ericsson R. Penfield Acme Packet A. Hawrylyshen Ditech Networks Inc, M. Bhatia NexTone Communications "Requirements from SIP (Session Initiation Protocol) Session Border Control Deployments," November 24, 2006
[6] G. Camarillo, Ericsson J. Rosenberg Cisco Systems , "The Alternative Network Address Types (ANAT) Semantics for the Session Description Protocol (SDP) Grouping Framework," RFC 4091 June 2005
[7] G. Camarillo, Ericsson J. Rosenberg Cisco Systems "Usage of the Session Description Protocol (SDP) Alternative Network Address Types (ANAT) Semantics in the Session Initiation Protocol (SIP)," RFC 4092 June 2005
[8] S.Deering, R.Hinden. Internet Protocol, Version 6 (IPv6) Specification [S], RFC2460,December 1998
[9] G. Tsirtsis and P. Srisuresh, "Network address translation-protocol translation (NAT-PT)," IETF, RFC 2766,2000.
[10]H. Schulzrinne et al., "RTP: A transport protocol for real-time applications,"IETF, RFC 1889, 1996.
[11]W.-E. Chen et al., "Design of SIP application level gateway for IPv6 translation," J. Internet Technol., vol. 5, no. 2, pp. 147-154, 2004.
[12] M. Alam, Z. Wu, "Comparison of Session Establishment Schemes over IMS in Mobile Environment," In Proceeding of 5th IEEE International Conference on Information, Communications and Signal, pp. 638-642, December 2005.
[13]H. Schulzrinne, E. Wedlund, "Application-layer mobility using SIP," IEEE Service Portability and Virtual Customer Environments,pp.29-36,December 2000.
[14]J.Bound et al.,"Dual Stack Transition Mechanism(DSTM)",draft-ietf-ngtrans-dstm-08,Mar,2002
[15]J.Palet,M.Diaz and M.Mackay,"Evaluation of IPv6 Auto-Transition Algorithm",draft-palet-v6opsauto-trans-02,October 24,2004
[16]Sun Microsystems,"JAIN SIP API Specification-JSR 32",2002.See http://jcp.org/en/jsr/detail?id=32.
[17]J.De Clercq,D.Ooms,S.Prevost,"Connecting IPv6 Islands over IPv4MPLS using IPv6 Provider Edge Routers(6PE),"draft-ooms-v6ops-bgp-tunnel-05,May,2005
[18]M.Lind,V.Ksinant,S.Park,A.Baudot and P.Savola,"Scenarios and Analysis for Introducing IPv6 into ISP Networks",RFC 4029,March,2005
[19]J.Bound,"IPv6 Enterprise Network Scenarios," RFC 4057,June,2005
[20]C.Huitema,R.Austein and S.Satapati,"Unmanaged Networks IPv6Transition Scenarios," RFC 3750,April,2004
[21]J.Soininen,"Transition Scenarios for 3GPP Networks," RFC 3574,August,2003
[22]S.Asadullah,A.Ahmed,P.Savola and J.Pal et,"ISP IPv6 Deployment Scenarios in Broadband Access Networks,"draft-ietf-v6ops-bb-deploymentscenarios-04,October 20,2005
[23]Jim Bound,Steve Klynsma,Tim Chown and Dave Green,"IPv6 Enterprise Network Analysis," draft-ietf-v6ops-ent-analysis-03,July,2005
[24]C.Huitema,R.Austein and S.Satapati,"Evaluation of IPv6 Transition Mechanisms for Unmanaged Networks," RFC 3904,September,2004
[25]J.Wiljakka,"Analysis on IPv6 Transition in Third Generation Partnership Project(3GPP)Networks," RFC 4215,October,2005
[26]A.Conta,S.Deering Generic Packet Tunneling in IPv6 Specification[S],RFC2473,December 1998
[27]Mackay M,Edwards C,Dunmore M,Chown T,Carvalho G,"A Scenario-Based Review of IPv6 Transition Tools," IEEE Internet Computing,May-June 2003
[28]J.Palet,M.Diaz and P.Savola,"Analysis of IPv6 Tunnel End-point Discovery Mechanisms," draftpalet-v6ops-tun-auto-disc-03,January 24, 2005
[29]J.Massar,"IPv6 Tunnel Discovery,"draft-massar-v6ops-turmeldiscovery-00,July 11,2005
[30]J.Palet,M.Diaz,"IPv6 Tunnel End-point Automatic Discovery Mechanism," draft-palet-v6opssolution-tun-auto-disc-01,October 24,2004
[31]D.Eastlake,3rd,C.Kaufman,"Domain Name System Security Extensions,"January 1997
[32]P.Savola,C.Patel,"Security Considerations for 6to4," RFC 3964,December 2004
[33]R.Graveman,M.Parthasarathy,P.Savola and H.Tschofenig,"Using IPsec to Secure IPv6-in-IPv4 Tunnels," draft-ietf-v6ops-ipsec-tunnels-01,August 25,2005
[34]M-K.Shin,Y-G.Hong and J.Hagino,"Application Aspects of IPv6Transition," RFC 4038,March,2005
[2] J. Rosenberg, H. Schulzrinne, G. Camarilloet, et al., "SIP: Session Initiation Protocol," IETF RFC 3261, June 2002.
[3] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model with Session Description Protocol (SDP)," RFC 3264, June 2002.
[4] Handley, M. and V. Jacobson, "SDP: Session Description Protocol," RFC 2327, April 1998.
[5] J. Hautakorpi, Ed. G. Camarillo Ericsson R. Penfield Acme Packet A. Hawrylyshen Ditech Networks Inc, M. Bhatia NexTone Communications "Requirements from SIP (Session Initiation Protocol) Session Border Control Deployments," November 24, 2006
[6] G. Camarillo, Ericsson J. Rosenberg Cisco Systems , "The Alternative Network Address Types (ANAT) Semantics for the Session Description Protocol (SDP) Grouping Framework," RFC 4091 June 2005
[7] G. Camarillo, Ericsson J. Rosenberg Cisco Systems "Usage of the Session Description Protocol (SDP) Alternative Network Address Types (ANAT) Semantics in the Session Initiation Protocol (SIP)," RFC 4092 June 2005
[8] S.Deering, R.Hinden. Internet Protocol, Version 6 (IPv6) Specification [S], RFC2460,December 1998
[9] G. Tsirtsis and P. Srisuresh, "Network address translation-protocol translation (NAT-PT)," IETF, RFC 2766,2000.
[10]H. Schulzrinne et al., "RTP: A transport protocol for real-time applications,"IETF, RFC 1889, 1996.
[11]W.-E. Chen et al., "Design of SIP application level gateway for IPv6 translation," J. Internet Technol., vol. 5, no. 2, pp. 147-154, 2004.
[12] M. Alam, Z. Wu, "Comparison of Session Establishment Schemes over IMS in Mobile Environment," In Proceeding of 5th IEEE International Conference on Information, Communications and Signal, pp. 638-642, December 2005.
[13]H. Schulzrinne, E. Wedlund, "Application-layer mobility using SIP," IEEE Service Portability and Virtual Customer Environments,pp.29-36,December 2000.
[14]J.Bound et al.,"Dual Stack Transition Mechanism(DSTM)",draft-ietf-ngtrans-dstm-08,Mar,2002
[15]J.Palet,M.Diaz and M.Mackay,"Evaluation of IPv6 Auto-Transition Algorithm",draft-palet-v6opsauto-trans-02,October 24,2004
[16]Sun Microsystems,"JAIN SIP API Specification-JSR 32",2002.See http://jcp.org/en/jsr/detail?id=32.
[17]J.De Clercq,D.Ooms,S.Prevost,"Connecting IPv6 Islands over IPv4MPLS using IPv6 Provider Edge Routers(6PE),"draft-ooms-v6ops-bgp-tunnel-05,May,2005
[18]M.Lind,V.Ksinant,S.Park,A.Baudot and P.Savola,"Scenarios and Analysis for Introducing IPv6 into ISP Networks",RFC 4029,March,2005
[19]J.Bound,"IPv6 Enterprise Network Scenarios," RFC 4057,June,2005
[20]C.Huitema,R.Austein and S.Satapati,"Unmanaged Networks IPv6Transition Scenarios," RFC 3750,April,2004
[21]J.Soininen,"Transition Scenarios for 3GPP Networks," RFC 3574,August,2003
[22]S.Asadullah,A.Ahmed,P.Savola and J.Pal et,"ISP IPv6 Deployment Scenarios in Broadband Access Networks,"draft-ietf-v6ops-bb-deploymentscenarios-04,October 20,2005
[23]Jim Bound,Steve Klynsma,Tim Chown and Dave Green,"IPv6 Enterprise Network Analysis," draft-ietf-v6ops-ent-analysis-03,July,2005
[24]C.Huitema,R.Austein and S.Satapati,"Evaluation of IPv6 Transition Mechanisms for Unmanaged Networks," RFC 3904,September,2004
[25]J.Wiljakka,"Analysis on IPv6 Transition in Third Generation Partnership Project(3GPP)Networks," RFC 4215,October,2005
[26]A.Conta,S.Deering Generic Packet Tunneling in IPv6 Specification[S],RFC2473,December 1998
[27]Mackay M,Edwards C,Dunmore M,Chown T,Carvalho G,"A Scenario-Based Review of IPv6 Transition Tools," IEEE Internet Computing,May-June 2003
[28]J.Palet,M.Diaz and P.Savola,"Analysis of IPv6 Tunnel End-point Discovery Mechanisms," draftpalet-v6ops-tun-auto-disc-03,January 24, 2005
[29]J.Massar,"IPv6 Tunnel Discovery,"draft-massar-v6ops-turmeldiscovery-00,July 11,2005
[30]J.Palet,M.Diaz,"IPv6 Tunnel End-point Automatic Discovery Mechanism," draft-palet-v6opssolution-tun-auto-disc-01,October 24,2004
[31]D.Eastlake,3rd,C.Kaufman,"Domain Name System Security Extensions,"January 1997
[32]P.Savola,C.Patel,"Security Considerations for 6to4," RFC 3964,December 2004
[33]R.Graveman,M.Parthasarathy,P.Savola and H.Tschofenig,"Using IPsec to Secure IPv6-in-IPv4 Tunnels," draft-ietf-v6ops-ipsec-tunnels-01,August 25,2005
[34]M-K.Shin,Y-G.Hong and J.Hagino,"Application Aspects of IPv6Transition," RFC 4038,March,2005
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