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Mobile communication system, communication control method and a mobile station

  • US 9,402,234 B2
  • Filed: 01/29/2016
  • Issued: 07/26/2016
  • Est. Priority Date: 03/16/2005
  • Status: Active Grant
First Claim
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1. A mobile station for a mobile communication system which supports a procedure for the mobile station connected to a first communication system which comprises a first network node, to use a second communication system which comprises a second network node, the mobile station comprising:

  • a receiver configured to receive a paging message from a base station connected to the first network node, the first network node having received a request message from the second network node, the second network node having received a voice call and responded to receipt of the voice call by sending the request message to the first network node; and

    a transmitter configured to transmit, to the second network node, a message which responds to the paging message,wherein the mobile station requests a unified location registration for the procedure with only the first communication system from among the first communication system and the second communication system, wherein the mobile station establishes a connection with the second network node,wherein the first communication system operates a first radio technology and the second communication system operates a second radio technology different from the first radio technology.

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