H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/185 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2310681
A method for operating a communication system includes steps of: (a) receiving a call for a user terminal at a satellite system gateway, the call originating from another user terminal; (b) examining a database to determine if the called user terminal is located within a coverage area of the satellite system gateway; and (c) if yes, formulating a paging message and transmitting the paging message to the called user terminal via at least one satellite. Upon the called user terminal responding to the page, the method further: (d) establishes the call using satellite system resources, (e) designates one of the calling or called user terminals as a call manager for the duration of the call, and (f) makes a temporary assignment of satellite system resources to the call manager user terminal for use in managing the remainder of the call. The step of establishing the call includes a step of assigning at least an initial channel/circuit pair to each of the user terminals. A call synopsis is transmitted from the call manager user terminal to the gateway at the completion of the call, and the gateway employs the call synopsis when transmitting billing-related information from the gateway to another gateway with which one or both of the user terminals has an affiliation. The other gateway could be a virtual gateway that serves a localized region within the service region of the gateway. At the completion of the call the assigned satellite system resources are relinquished. Also disclosed are methods and apparatus for extending the effective service regions of gateways and virtual gateways through a gateway-to-gateway diversity technique, wherein gateways are interconnected for providing user terminal traffic and signalling information between themselves at call setup and during a call. 84
Monte Paul A.
Wiedeman Robert A.
Globalstar L.p.
Sim & Mcburney
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