Abstract
In order to achieve seamless handover for real-time applications in the IP Multimedia Subsystem (IMS) of next generation network, a multiprotocol combined handover mechanism is proposed in this paper. We combine SIP (Session Initiation Protocol), FMIP (Fast Mobile IPv6 Protocol), and MIH (Media Independent Handover) protocols by cross-layer design and optimize those protocols' signaling flows to improve the performance of vertical handover. Theoretical analysis and simulation results illustrate that our proposed mechanism performs better than the original SIP and MIH combined handover mechanism in terms of service interruption time and packet loss.
Highlights
In generation wireless system, access networks can be carried out by different technologies, such as WiFi, WiMAX and UMTS, while the core network infrastructure is established on an all-IP-based network
Note that the conventional approaches for improving the handover performance are combined by Session Initiation Protocol (SIP) and Media Independent Handover (MIH), while our proposed handover approach is a combination of SIP, Fast Mobile IPv6 Protocol (FMIP) and MIH
In order to achieve seamless handover for IP multimedia subsystem in heterogeneous networks, we propose the FMIPauxiliary SIP and MIH handover mechanism (FASM), which is based upon the architecture of Figure 1
Summary
In generation wireless system, access networks can be carried out by different technologies, such as WiFi, WiMAX and UMTS, while the core network infrastructure is established on an all-IP-based network. As the nodes move among heterogeneous wireless networks, one of the greatest challenges is how to provide fast and seamless mobility support. Some researches (see, e.g., [6, 7]) had been done by using MIH to improve the SIP-based node mobility handover process in vertical handover. MIH is used to assist the Mobile IP-(MIP-) based handover process. Fast Mobile IPv6 Protocol (FMIP) is an extension to MIPv6 designed for eliminating the standard MIP handover latencies [8] and is a combined SIP+MIH handover architecture by cross-layer design. Handover occurs when a communicating node moves from one network to another. An integrated scheme of combining FMIP, SIP and MIH signaling is proposed to optimize the performance of vertical handover on make-beforebreak mode. In order to facilitate the understanding of this paper, some key terminologies used in this paper are listed in the Abbreviations
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
