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Systems, methods, and devices for efficient device-to-device channel contention

  • US 9,572,171 B2
  • Filed: 06/26/2014
  • Issued: 02/14/2017
  • Est. Priority Date: 10/31/2013
  • Status: Active Grant
First Claim
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1. An apparatus for a user equipment (UE), the apparatus configured to:

  • process a first signal received during a single request period of time, the first signal indicating a request to transmit to the UE from a first transmitting UE;

    process one or more additional signals received during the single request period of time, the one or more additional signals indicating that one or more additional transmitting UEs are requesting to transmit to corresponding target UEs;

    identify, based on a received power of the first signal and the one or more additional signals, one or more incompatible UEs by identifying those of the first transmitting UE and the one or more additional transmitting UEs that would interfere with each other during simultaneous device-to-device communications;

    determine to block transmission of at least one of the one or more incompatible UEs by selecting to block at least one of the one or more incompatible UEs that would interfere with at least another of the one or more incompatible UEs;

    in response to the determination to block transmission of the at least one of the one or more incompatible UEs, cause a signal to be sent, the signal indicating a block on transmission by the at least one of the one or more incompatible UEs.

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