Radio channel access control

Details Radio channel access control Radio channel access control

H - Electricity

04

B

H04B 7/26 (2006.01) H04B 7/185 (2006.01)

Patent

CA 2135855

A cellular telecommunication system comprised of low-Earth orbiting satellites (12) featuring allocation of communication channels among users in cells (34) is disclosed. Each subscriber unit (26) is programmed with an embedded class identifier. During periods when it is desirable to limit acquisition of a satellite (12) to some restricted class or set of classes, such as periods of heavy use, the satellite broadcasts a list of inhibited class identifiers allowing only uninhibited classes access to the communication system. The method reduces thrashing by allowing access to users on a hierarchy class basis. The method uses both real time cell loading data and historical cell loading information based on previous experiences and can be programmed to limit access to emergency services in the case of natural disasters.

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