Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Two-Layered Mobility Architecture Using Fast Mobile IPv6 and Session Initiation Protocol | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008 Article ID 348594 8 pages doi 2008 348594 Research Article A Two-Layered Mobility Architecture Using Fast Mobile IPv6 and Session Initiation Protocol Deeya S. Nursimloo George K. Kalebaila and H. Anthony Chan Department of Electrical Engineering University ofCape Town Rondebosch 7701 South Africa Correspondence should be addressed to Deeya S. Nursimloo deeya31@ Received 27 November 2006 Accepted 24 May 2007 Recommended by Kameswara Rao Namuduri This paper proposes an integrated mobility scheme that combines the procedures of fast handover for Mobile IPv6 FMIPv6 and session initiation protocol SIP mobility for realtime communications. This integrated approach is based on the context of the applications utilized. Furthermore to reduce system redundancies and signaling loads several functionalities of FMIPv6 and SIP have been integrated to optimize the integrated mobility scheme. The proposed scheme aims at reducing the handover latency and packet loss for an ongoing realtime traffic. Using ns-2 simulation we analyze the performance of the proposed integrated scheme and compare it with the existing protocols for a VoIP and for a video stream traffic. This mobility architecture achieves lower handover delay and less packet loss than using either FMIPv6 or SIP and hence presents a powerful handover mobility scheme for next generation IP-based wireless systems. Copyright 2008 Deeya S. Nursimloo et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The next-generation wireless systems are envisioned to have an IP-based infrastructure platform to support the heterogeneity of the access technologies. Currently various wireless technologies and networks provide different services to
