An IMS Architecture and Algorithm Proposal with QoS Parameters for Flexible Convergent Services with Dynamic Requirements
AbstractQuality of Service (QoS) provisioning is one of the main requirements in the 3GPP IP Multimedia Subsystem (IMS) and it has been addressed in different works since the beginning of the IMS standardization process. As a result of the fixed and mobile networks evolution, the parameters standardized in IMS have changed constantly until the specification of the Policy and Charging Control (PCC) architecture that integrates IMS QoS and charging functionalities. However, current IMS QoS specifications still have some limitations to handle service flexibility that is required to provide Internet services over IMS. In this work, we propose an enhanced IMS QoS architecture to support efficient QoS providing for flexible services with dynamic requirements. This proposal is compared against different approaches to evaluate their behavior under network saturation conditions. Simulations results show that the architecture we propose achieves efficiency and flexibility, maintaining the number of blocked and active sessions, and increasing the number of high priority sessions activated in a saturated network.
 R. Copeland, Converging NGN wire line and Mobile 3G Networks, CRC Press, USA, 2009.
 G. Camarillo and M. A. García-Martín, The 3G IP Multimedia Subsystem (IMS): Merging he Internet and the Cellular Worlds, 2nd Edition, John Wiley & Sons Ltd., England, 2006.
 M. Sauter, Beyond 3G - Bringing Networks, Terminals and the Web Together. John Wiley & Sons Ltd., United Kingdom, 2009.
 T. Magedanz, A. Diez, M. Corici, and D. Vingarzan, "Understanding NGMN and Related echnologies - LTE, EPC and IMS", IMS Workshop 2009, Tutorial 4, Fraunhofer FOKUS. erlin, Germany, November 2009.
 3GPP, "Quality of Service (QoS) concept and architecture", Release 9, TS 23.107 V9.0.0, ecember 2009. http://www.3gpp.org/ftp/Specs/html-info/23107.htm
 3GPP, "Policy and charging control architecture", Release 9, TS 23.203 V9.0.0, March 2009. ttp://www.3gpp.org/ftp/Specs/html-info/23203.htm
 S. Tompros, and S. Denazis. "Interworking of heterogeneous access networks and QoS provisioning ia IP multimedia core networks", Computer Networks, Volume 52, Issue 1, pp. 15-227, January 2008.
 G. Camarillo, T. Kauppinen, M. Kuparinen, and I. M. Ivars, "Towards an innovation oriented P multimedia subsystem", Communications Magazine, IEEE, volume 45, issue 3, pp. 130- 36, March 2007.
 R. Good and N. Ventura, "End to end session based bearer control for IP multimedia ubsystems", IFIP/IEEE International Symposium on Integrated Network Management IM'09, pp. 497-504. June 2009.
 M. Ageal, R. Good, A. Elmangosh, M. Ashibani, N. Ventura, and F. Ben-Shatwan, "Centralized olicy provisioning for inter-domain IMS QOS", EUROCON '09, pp. 1793-1797. May 009.
 S. Tompros, C. Kavadias, D. Vergados, and N. Mouratidis, "A Strategy for Harmonised oS Manipulation in Heterogeneous IMS Networks", Wireless Personal Communications, ololume 49, number 2, pp. 197-212. Springer Netherlands, August 2008.
 R. Yavatkar, D. Pendarakis, and R. Guerin, "RFC2753 - A Framework for Policybased dmission Control", Network Working Group, January 2000. http://www.rfceditor.rg/rfc/rfc2753.txt
 D. Durham, J. Boyle, R. Cohen, S. Herzog, R. Rajan, and A. Sastry, "RFC 2748 - The OPS (Common Open Policy Service) Protocol", Network Working Group, January 2000. ttp://www.rfc-editor.org/rfc/rfc2748.txt
 C. Filsfils and J. Evans, Deploying Diffserv in Backbone Networks for Tight SLA Control, EEE Internet Computing, volume 9, issue 1, pp. 66-74. January 2005
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