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Techniques for device-to-device communications

  • US 9,608,710 B2
  • Filed: 08/07/2014
  • Issued: 03/28/2017
  • Est. Priority Date: 08/08/2013
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a processor circuit for a first user equipment (UE) capable of operating in compliance with one or more 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) standards including LTE-Advanced (LTE-A);

    an access component for execution by the processor circuit to receive system information that indicates a device-to-device (D2D) region comprising a plurality of D2D region subframes, the D2D region defined using a set of type 2 frame structure subframes, the system information to indicate a plurality of D2D operational zones of the D2D region, each of the plurality of D2D operational zones to comprise a respective subset of the D2D region subframes, each of the plurality of D2D operational zones to include at least one D2D region subframe allocated for synchronization, channel quality measurements and feedback, proximity sensing of other UEs, transmission of control information, device discovery, or data transmission;

    a synchronization component for execution by the processor circuit to receive a synchronization signal from a synchronization source to obtain time and frequency synchronization for use of the D2D region to communicate with a second UE;

    a proximity sensing or device discovery component for execution by the processor circuit to receive or transmit a beacon transmission or discovery signal via use of a first D2D operational zone including a D2D region subframe allocated for proximity sensing or device discovery, the beacon transmission or discovery signal capable of indicating to the proximity sensing or device discovery component that the second UE is in proximity of the first UE;

    an establish component for execution by the processor circuit to establish a communication link with the second UE based on exchanged discovery packets via allocated D2D region subframes; and

    a communication component for execution by the processor circuit to receive a D2D data communication from the second UE based on use of the D2D region, the communication component to use a third D2D operational zone including D2D region subframes allocated for data transmission to receive the D2D data communication from the second UE.

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