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Mobile communication system, mobile station, call control device, and mobile communication method

  • US 9,538,354 B2
  • Filed: 09/12/2014
  • Issued: 01/03/2017
  • Est. Priority Date: 09/18/2013
  • Status: Active Grant
First Claim
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1. A mobile communication system comprising:

  • a mobile station; and

    a call control device configured to control connection of an emergency call initiated by the mobile station, whereinthe mobile station includesa calling number information acquisition unit configured to acquire calling number information includinga prefix indicating how to treat the emergency call, anda calling number being a telephone number of a called party,a prefix/calling number separation unit configured to separate the calling number information acquired by the calling number information acquisition unit into the prefix and the calling number, andan emergency call transmission unit configured to send the call control device the emergency call in the form of an emergency call transmission signal including the prefix separated by the prefix/calling number separation unit, and an emergency call type linked with the calling number, andthe call control device includesan emergency call reception unit configured to receive from the mobile station the emergency call in the form of the emergency call transmission signal,a prefix/call type identification unit configured to identify the prefix and the emergency call type included in the emergency call transmission signal, andan emergency call control unit configured to determine how to treat the emergency call based on the prefix identified by the prefix/call type identification unit, and to connect the emergency call to an emergency call answering point corresponding to the emergency call type based on the emergency call type identified by the prefix/call type identification unit.

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