Patent ID: 6418314
Filing Date: 2002-07-09
Classification: H04B

Abstract:
A method of registering a user terminal with a satellite communications system including a plurality of satellite spot beam transceivers wherein each of the satellite spot beam transceivers defines a respective spot beam, said method comprising the steps of:transmitting current spot beam registration information from the user terminal to the satellite communications system, wherein the current spot beam registration information identifies at least one spot beam via which the satellite communication system currently pages the user terminal; determining updated spot beam registration information for the user terminal at the satellite communications system based on the current spot beam registration information received from the user terminal and based on a periodic oscillation associated with alternating spot beam coverage of the user terminal; transmitting said updated spot beam registration information from the satellite communications system to the user terminal, wherein the updated spot beam registration information is different than the current spot beam registration information and identifies at least one spot beam via which the satellite communication system currently pages the user terminal; and updating the current spot beam registration information for the user terminal using the updated spot beam registration information received from the satellite communications system.