Communication network with incoming calls directed through...

Details Communication network with incoming calls directed through... Communication network with incoming calls directed through...

H - Electricity

04

B

H04B 7/185 (2006.01) H04B 7/195 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2143776

A network includes a system and a population of subscriber units. System satellites move in low earth orbits and form moving cells on the surface of the earth. A pattern of static areas that covers the service area of the system is defined in a map. The system discovers the static areas for the subscriber units. When an incoming call needs to be directed to a subscriber unit, the subscriber unit's static area is converted into identities of beams that form the cells that coincide with the static area. A ring signal is transmitted in only these cells. Subscriber units monitor area identification signals that identify the static areas coincident with the cells where the signals are transmitted. When the static area known by the system is not among the identified static areas, a subscriber unit engages in re-registration communications.

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