| We have studied many micromobility protocols, namely Hierarchical Mobile IPv6 (HMIPv6) proposed as a complementary solution for mobile IP, which is based on a hierarchical architecture and tends to limit the handoff management at a local level. Unfortunately, the hierarchical architecture of HMIPv6 presents major drawbacks with respect to robustness and scalability. The paradox is that such structure is extremely vulnerable to a failure of the station at the higher level of the hierarchy (called MAP) and that this station is the most heavily loaded in the network constituting a system bottleneck.; On the other hand, many techniques have been proposed by the IETF in order to improve the handover management procedure, such as fast handover, which tends to reduce the handover latency. This lead us to propose a framework that integrates the micro-mobility management mechanisms, namely the protocol HMIPv6 combined with the fast handover technique, and the signaling protocol RSVP-TE in an MPLS based radio access network. (Abstract shortened by UMI.)... |
