Patent ID: 6885861

Claim:
A method of mobility and service recovery for a user in a wireless communication network, said method comprising: storing service information concerning the user in a registrar, said service information being information which allows the user to continue their ongoing communication services at a new or recovered user terminal; sending a subscription message from the new or recovered user terminal to the registrar, a header in the subscription message containing a unique indication of a particular user; and in response to said subscription message containing a unique indication in a header, returning a notification message to the new or recovered user terminal, the payload of said notification message including said service information which allows the user to continue at least some of their ongoing communication services at the new or recovered user terminal, wherein said new or recovered user terminal comprises a recovered user terminal and said subscription message is sent after said recovered user terminal experiences a failure, and wherein said service information included in the payload of said notification message enables recovery of communication services to their state at the time of said terminal failure.