Advanced Path-Migration Mechanism for Enhancing Signaling Efficiency in IP Multimedia Subsystem

• Kai-Di Chang,
• Chi-Yuan Chen,
• Shih-Wen Hsu,
• Han-Chieh Chao,
• Jiann-Liang Chen,

Vol. 6, No. 1, January 29, 2012
10.3837/tiis.2012.01.017, Download Paper (Free):

• Next generation networks
• IP multimedia subsystem
• session initial protocol
• signaling traffic
• path migration

Abstract

Since Internet Protocol (IP) is the most important protocol in Next Generation Networks (NGNs), 3rd Generation Partnership Project (3GPP) utilizes Session Initial Protocol (SIP) based on IP as the base protocol for negotiating sessions in IP Multimedia Subsystem (IMS). Different from traditional circuit-switched network, in IMS, the media traffic and signaling are delivered through IP transport. The media traffic may affect the signaling efficiency in core network, due to traffic collisions and best effort packets delivery. This paper proposes a novel path-migration mechanism for enhancing the traffic efficiency in integrated NGN-IMS. The simulation results show that the interference and traffic collision can be reduce by applying proposed path-migration mechanism and the signaling efficiency in core network can be improved with higher system capability and voice quality.

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