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Method and apparatus for providing packet data communications to a communication unit in a radio communication system

  • US 5,901,142 A
  • Filed: 09/18/1996
  • Issued: 05/04/1999
  • Est. Priority Date: 09/18/1996
  • Status: Expired due to Term
First Claim
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1. In a mobile radio communication system that includes a system controller, a packet data router, a communication unit, and a plurality of base sites, the plurality of base sites serving respective service coverage areas, the service coverage areas being grouped into a plurality of location areas, and each location area of the plurality of location areas including at least one service coverage area, a method for the packet data router to provide packet data communications to the communication unit, the method comprising the steps of:

  • receiving a first data packet intended for the communication unit;

    processing a transport protocol layer of the first data packet;

    determining whether the communication unit is presently involved in a packet data communication session based at least on information contained in the transport protocol layer of the first data packet;

    when the communication unit is presently involved in a packet data communication session, providing the first data packet to the communication unit via a first base site serving a service coverage area containing the communication unit; and

    when the communication unit is not presently involved in a packet data communication session, instructing the system controller to transmit a page to the communication unit via each base site serving a service coverage area of a location area containing the communication unit.

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