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Method and system for processing a control message in an internet protocol-based mobile communication system supporting a multimedia service

  • US 8,244,877 B2
  • Filed: 03/21/2007
  • Issued: 08/14/2012
  • Est. Priority Date: 03/21/2006
  • Status: Active Grant
First Claim
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1. A method for processing a request message from a User Equipment (UE) in an Internet protocol-based mobile communication system supporting a multimedia service, comprising:

  • sending, by the UE, an INVITE request to a Serving-Call Session Control Function (S-CSCF) to create a new dialog,sending, by the S-CSCF, the INVITE request to a representative application server from one or more representative application servers;

    allocating, by the representative application server, a specific lower-layer application server from at least one lower-layer application server, and sending the INVITE request to the specific lower-layer application server by recording only an address of the specific lower-layer application server and an address of the S-CSCF in a record-route of the INVITE request;

    processing, by the specific lower-layer application server, the INVITE request and sending a first response to the representative application server;

    sending, by the representative application server, the first response to the S-CSCF;

    sending, by the S-CSCF, the first response to the UE;

    sending, by the UE, a subsequent INVITE request in the new dialog to the S-CSCF;

    directly sending, by the S-CSCF, the subsequent INVITE request to the specific lower-layer application server according to the record-route of the INVITE request;

    processing, by the specific lower-layer application server, the subsequent INVITE request and sending a second response to the S-CSCF; and

    sending, by the S-CSCF, the second response to UE,wherein the representative application server selects the specific lower-layer application server according to user allocation information, andwherein the INVITE request is forwarded to the representative application server according to initial filter criteria at the S-CSCF.

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