Patent ID: 6181932
Filing Date: 2001-01-30
Classification: H04B

Abstract:
A method of registering a user terminal with a satellite communications system including a plurality of satellite spot beam transmitters wherein each of the satellite spot beam transmitters defines a respective spot beam wherein a periodic oscillation of two adjacent ones of the satellite spot beam transmitters results in a change of geographic coverage for the respective adjacent spot beams so that the user terminal can be alternatingly covered by one of the first and second spot beams when the user terminal is stationary, said method comprising the steps of:determining that the user terminal is alternatingly covered by one of the first and second spot beams;registering the user terminal with a spot beam pair registration for both the first and second adjacent spot beams;storing the spot beam pair registration in memory;terminating communications operations between the user terminal and the satellite communications system;reestablishing communications operations between the user terminal and the satellite communications system; andreregistering the user terminal with the stored spot beam pair registration from memory.