A SIP-Based Seamless-Handoff (S-SIP) Scheme for Heterogeneous Mobile Networks

TitleA SIP-Based Seamless-Handoff (S-SIP) Scheme for Heterogeneous Mobile Networks
Publication TypeConference Paper
Year of Publication2007
AuthorsZhang, J., H. C. B. Chan, and V. C. M. Leung
Conference NameWireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Pagination3946 -3950
Date Publishedmar.
Keywords4G networks, B3G network, handoff delays, heterogeneous mobile networks, heterogeneous wireless access networks, interdomain roaming, location tracking, make-before-break procedure, mobile communication, mobility management, mobility management (mobile radio), next-generation mobile communication systems, radio access networks, seamless roaming, seamless-handoff scheme

One of the prominent goals of next-generation mobile communication systems is to support seamless roaming of users across heterogeneous wireless access networks. Although SIP has been regarded as an attractive candidate to provide mobility management in B3G/4G networks because of its flexibility and ease of deployment, it still suffers from unacceptably long handoff delays. In this paper, a SIP-based seamless-handoff (S-SIP) scheme is proposed to overcome this problem in inter-domain roaming. Unlike the other SIP-based handoff methods, S-SIP employs a "make-before-break" procedure for seamless handoffs. Moreover, we also propose the appropriate handoff triggering point for this scheme based on location tracking techniques. Simulations results show that the proposed scheme greatly outperform the general SIP-based handoff scheme.


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