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Evaluation of Service Continuity in a Self-organizing IMS

Authors: Satoshi Komorita, Tsunehiko Chiba, Hidetoshi Yokota, Ashutosh Dutta, Christian Makaya, Subir Das, Dana Chee, F. Joe Lin, Henning Schulzrinne


The NGN (Next Generation Network), which can provide advanced multimedia services over an all-IP based network, has been the subject of much attention for years. While there have been tremendous efforts to develop its architecture and protocols, especially for IMS, which is a key technology of the NGN, it is far from being widely deployed. However, efforts to create an advanced signaling infrastructure realizing many requirements have resulted in a large number of functional components and interactions between those components. Thus, the carriers are trying to explore effective ways to deploy IMS while offering value-added services. As one such approach, we have proposed a self-organizing IMS. A self-organizing IMS enables IMS functional components and corresponding physical nodes to adapt dynamically and automatically based on situation such as network load and available system resources while continuing IMS operation. To realize this, service continuity for users is an important requirement when a reconfiguration occurs during operation. In this paper, we propose a mechanism that will provide service continuity to users and focus on the implementation and describe performance evaluation in terms of number of control signaling and processing time during reconfiguration

Keywords: SIP, IMS, Service Continuity, Self-organizing, and Performance

Digital Object Identifier (DOI):

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[1] 3GPP TS 23.228 v9.0.0, "IP Multimedia Subsystem (IMS); Stage 2," Rel. 9, Sept. 2009.
[2] Third Generation Partnership Project (3GPP),
[3] A. Dutta, C. Makaya, S. Das, D. Chee, J. Lin, S. Komorita, T. Chiba, H. Yokota, and H. Schulzrinne, "Self Organizing IP Multimedia Subsystem," In Proc. of 3rd IEEE Int'l Conf. on Internet Multimedia Systems Architecture and Application (IMSAA'09), Dec. 2009.
[4] 3GPP2 X.S0011-001-C v3.0: "cdma2000 Wireless IP Network Standard: Introduction," 2006.
[5] 3GPP: "TS36.300 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2," 2009.
[6] NGMN Alliance:
[7] E. Marocco, A. Manzalini, M. Samp├▓, and G. Canal, " Interworking between P2PSIP Overlays and IMS Networks - Scenarios and Technical Solutions,"
[8] T. Bessis, "Improving performance and reliability of an IMS network by co-locating IMS servers," Bell Labs Technical Journal, Vol. 10, No. 4, pp. 167-178, 2006.
[9] J. Fabini, P. Reichl, A. Poropatich, R. Huber, and N. Jordan, "IMS in a Bottle, Initial Experiences from an OpenSER-based Prototype Implementation of the 3GPP IP Multimedia Subsystem," in Proc. of the Int'l Conf. on Mobile Business (ICMB'06) , June 2006.
[10] M. Matuszewski and M. Garcia-Martin, "A Distributed IP Multimedia Subsystem (IMS)," IEEE Int'l Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'07), pp. 1-8, 2007.
[11] 3GPP TS 23.237 v9.0.0, "IP Multimedia Subsystem (IMS) Service Continuity; Stage 2," Rel. 9, Sept. 2009.
[12] S. Komorita, T. Kubo, T. Hasegawa, and H. Yokota, " Network-controlled SIP Server Switching Methods for Active SIP Sessions," IASTED Parallel and Distributed Computing and Networks(PDCN '2009), Feb, 2009.
[13] 3GPP TS 33.102 v9.0.0, "3G security; Security architecture" Rel. 9, Sept. 2009.
[14] NIST SIP,
[15] SIP Communicator,
[16] IMS Bench SIPp,
[17] B. Harris and R. Hunt, "TCP/IP security threats and attack methods," Computer Communications, Vol. 22, Issue 10, pp. 885-897, 1999.