Method for handling the simultaneous mobility of mobile hosts in infrastructure-based networks

摘要

In infrastructure-based networks devices often move from one attachment point in the network or a sub-network thereof to another attachment point. Communications sessions may be established between Mobile Hosts attached to such nodes. Communications sessions between nodes established using Session Initiation Protocol (SIP), Mobile Internet Protocol with Location Registers (MIP-LR) or Mobile Internet Protocol version 6 (MIPv6) may fail if there is simultaneous mobility of two Mobile Hosts in an ongoing communications session. Stationary binding update proxies and stationary location proxies are introduced into such communications networks in order to provide a solution to the problem of simultaneous mobility of Mobile Hosts. Specific implementations for SIP, MIP-LR and MIPv6 are provided. In SIP networks, the SIP server for the mobile hosts acts as the stationary binding update proxy and the stationary location proxy. In MIP-LR networks,