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Systems and methods for device-to-device communication in the absence of network coverage

  • US 9,288,756 B2
  • Filed: 06/28/2013
  • Issued: 03/15/2016
  • Est. Priority Date: 09/28/2012
  • Status: Active Grant
First Claim
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1. A method for coupling a first mobile device with a second mobile device in a one-to-one Proximity-based Services (ProSe) communication session comprising:

  • the first mobile device discovering the presence of the second mobile device;

    negotiating between the first mobile device and the second mobile device to determine which of the first mobile device and the second mobile device is to become a group owner of the communication session and which is to become a client of the communication session; and

    wherein when the first mobile device is the client, the method includes conducting a mutual authentication with the group owner;

    when the first mobile device is the group owner, the method includes receiving authentication information from the client; and

    the connection between the first mobile device and the second mobile device is via a device-to-device (D2D) link,wherein conducting mutual authentication comprises;

    transmitting a first certificate owned by the first mobile device to the second mobile device to permit the second mobile device to verify the first certificate; and

    the first mobile device verifying a second certificate owned by the second mobile device; and

    wherein;

    the first certificate includes a first link identifier that identifies the first mobile device;

    the second certificate includes a second link identifier that identifies the second mobile device;

    the first certificate is arranged to confirm that the first mobile device is authorized; and

    the second certificate is arranged to confirm that the second mobile device is authorized.

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