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Method for synchronizing transaction identifiers in a mobile satellite communication system

  • US 5,956,646 A
  • Filed: 12/03/1996
  • Issued: 09/21/1999
  • Est. Priority Date: 12/03/1996
  • Status: Expired due to Term
First Claim
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1. A signaling method for synchronizing transaction identifiers used by two mobile radio communication units in a mobile communication system to identify a mobile-to-mobile connection, said synchronizing method comprising:

  • a) during a connection between a network and an originating mobile unit, assigning a first transaction identifier used by the originating mobile unit to identify signaling messages associated with said mobile-to-mobile connection;

    b) during a connection between said network and a terminating mobile unit, assigning a second transaction identifier used by the terminating mobile unit to identify signalling messages associated with said mobile-to-mobile connection, wherein the first and second transaction identifiers are assigned independently of each other;

    c) receiving at each mobile unit a signaling message including a counterpart transaction identifier that identifies the corresponding transaction identifier used by the other mobile unit;

    d) storing the corresponding counterpart transaction identifier in each mobile unit; and

    e) inserting the corresponding counterpart transaction identifier stored in said mobile unit into outgoing signaling messages requiring a transaction identifier sent by one of said mobile units to the other mobile unit during said mobile-to-mobile connection.

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