Application-layer mobility using SIP
ACM SIGMOBILE Mobile Computing and Communications Review
Internet communications using SIP: delivering VoIP and multimedia services with Session Initiation Protocol
Mobility management for VoIP service: Mobile IP vs. SIP
IEEE Wireless Communications
A multilayered mobility management scheme for auto-configured wireless IP networks
IEEE Wireless Communications
The Session Initiation Protocol: Internet-centric signaling
IEEE Communications Magazine
Service unaware handover using API hooking in all-IP networks
ICOIN'09 Proceedings of the 23rd international conference on Information Networking
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In the near future, the Internet is likely to become an All-IP network that provides various multimedia services over wireless networks. Although the earliest VoIP applications did not consider the end-node mobility, researchers have attempted to support mobility in current VoIP protocols, such as Session Initial Protocol (SIP)-based mobility. The SIP-based mobility is considered because it can readily support mobility. However, calling disruptions may occur in traditional SIP mid-call terminal mobility because handoff procedure may be required, depending on the implementation and the real network deployment considerations. In any case, issues in the combined SIP/RSVP for guaranteeing QoS of VoIP service under mobile environment are also considered to be crucial. Therefore, this study describes the solutions by devising novel hierarchy network architecture. Also, the mechanisms including help with neighboring users in adjacent cells and the third party call control to overcome those issues are included. The simulation results indicate that the proposed technique is practical and better executive than conventional schemes.