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Systems, methods, and devices for distributed scheduling for device-to-device interference mitigation

  • US 9,974,048 B2
  • Filed: 03/27/2014
  • Issued: 05/15/2018
  • Est. Priority Date: 04/26/2013
  • Status: Active Grant
First Claim
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1. User equipment (UE) configured to communicate with an evolved universal terrestrial radio access network (eUTRAN), comprising:

  • a processor; and

    a memory coupled with the processor, the memory storing instructions which when executed by the processor cause the UE to;

    measure a received power level of a reference signal received from a target UE and measure received power levels for reference signals received from a plurality of non-target UEs;

    generate resource usage maps for the target UE and each of the plurality of non-target UEs, wherein each resource usage map indicates resource element groups in an available device-to-device spectrum for which a corresponding UE is available for reception;

    determine a priority, with respect to the target UE, for each resource element group based on the resource usage map and an anticipated signal-to-interference ratio, wherein the anticipated signal-to-interference ratio for each resource element group is based on the received power level for the reference signal received from the target UE and only those of the reference signals that are received from those of the plurality of non-target UEs that are available during the each resource element group; and

    transmit data to the target UE within one or more resource element groups with highest priorities for the target UE.

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