METHOD AND APPARATUS FOR MAINTAINING COMMUNICATIONS WHEN RADIO COMMUNICATION IS UNAVAILABLE

摘要

A method and apparatus for maintaining communications between a mobile computer (102) and a mobile subscriber unit (104) is disclosed. The method a nd apparatus comprise determining whether a connection is available between the mobile subscriber unit (104) and a radio communications system. If a connection is available, then the method and apparatus include retrieving a first LP address for the mobile computer (102) from the radio communications system. Then, the method and apparatus comprise caching the first IP address in the mobile subscriber unit (104) for use by the mobile computer (102). Finally, the method and apparatus include utilizing the first IP address eve n if the radio communications system is unavailable and updating the first IP address with a second IP address obtained from the radio communications syst em when the radio communications system is available.