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METHOD FOR PERFORMING HANDOVER DURING DEVICE-TO-DEVICE COMMUNICATION IN WIRELESS ACCESS SYSTEM AND DEVICE FOR SAME

  • US 20140135019A1
  • Filed: 07/16/2012
  • Published: 05/15/2014
  • Est. Priority Date: 07/15/2011
  • Status: Active Grant
First Claim
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1. A method for performing handover during device-to-device (D2D) communication in a radio access system supporting D2D communication, the method comprising:

  • sensing, by a first device, a handover state in consideration of link quality with a second device while performing communication with the second device;

    measuring, by the first device, channel quality for a neighboring device using a reference signal transmitted from the neighboring device;

    transmitting, by the first device, a handover request message to a relay device in order to start handover to the relay device selected from among the neighboring device based on the result of measuring channel quality;

    receiving, by the first device from the relay device, a handover complete message indicating that resource allocation has been completed; and

    performing, by the first device, D2D communication with the second device via the relay device using resources allocated by the relay device.

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