Integrated SIP and HCoP-B architecture for nested network mobility

Abstract

In this paper, we propose a fully-integrated SIP+HCoP-B architecture to provide efficient mobility management of the nested mobile network. It achieves the following merits as compared to traditional SIP over NBS and SIP over HCoP-B architectures. First, it reduces network deployment costs by only equipping an integrated SIP mobile server, instead of both SIP home registrar and Mobile IP home agent, for each mobile router. Second, it achieves the smallest signaling overhead and the shortest session initialization latency. Finally, it supports both SIP-based and non-SIP-based applications.

Performance Analysis for Schemes Supporting SIP in the Nested Mobile Network

“…In the following, we briefly review the efficient transmission mechanism of SIP+HCoP-B for both SIP control messages and SIP media data of all SIP clients in the nested NEMO. Due to space limitation of this paper, please refer to [2,9] for detailed flows and mathematical analyses of other traditional schemes such as SIP over NBS (SIP/NBS), SIP over RRH (SIP/RRH), SIP over MIRON (SIP/MIRON) and SIP over HCoP-B (SIP/HCoP-B).…”

“…At the first evolution of network-layer and applicationlayer protocols for terminal mobility in IP-based networks [2], there are two kinds of approaches, i.e., Mobile IP (MIP) at the network layer and SIP at the application layer. In MIP, as a mobile node (MN) hands over to a foreign network, it will acquire a care-of address (CoA) from the newly attached access router (AR) and then update the mapping between its home address and the CoA in the binding cache of its home agent (HA) in the home network.…”

“…Hence, executing SIP and NEMO protocols individually does not completely resolve mobility management problems for the nested NEMO. Therefore, the fully integrated SIP+HCoP-B architecture has been proposed in [2] as the fourth evolution. As compared to non-integrated approaches, it has supported both SIP-based and non-SIPbased sessions, optimized signaling flows and necessary network equipments for session initialization and handoff and achieved optimal routes for both SIP control messages and media data between two SIP clients, which significantly reduces initialization and handoff latencies of the SIP session.…”

“…As compared to non-integrated approaches, it has supported both SIP-based and non-SIPbased sessions, optimized signaling flows and necessary network equipments for session initialization and handoff and achieved optimal routes for both SIP control messages and media data between two SIP clients, which significantly reduces initialization and handoff latencies of the SIP session. However, performance evaluations in [2] have not considered the frame error rate of the error-prone wireless link, which is far beyond the reality. Here, we adopt the analytical model proposed in [1] to investigate performances of SIP+HCoP-B and other well-known schemes over errorprone wireless links.…”