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Physical uplink control channel (PUCCH) resource mapping using an enhanced physical downlink control channel (ePDCCH)

  • US 8,958,379 B2
  • Filed: 09/14/2012
  • Issued: 02/17/2015
  • Est. Priority Date: 03/16/2012
  • Status: Expired due to Fees
First Claim
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1. A method for physical uplink control channel (PUCCH) resource mapping corresponding to an enhanced physical downlink control channel (ePDCCH) from a node, comprising:

  • mapping a PUCCH resource nPUCCH(1) corresponding to an ePDCCH for PUCCH resource hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback, wherein the PUCCH resource nPUCCH(1) is determined using a lowest PRB index including at least one enhanced control channel element (eCCE) of ePDCCH resources and a total number of eCCE in one physical resource block (PRB),wherein the PUCCH resource nPUCCH(1) is represented by nPUCCH(1)=E·

    (IPRB

    ePDCCHlowest

    index

    NPRB,ePDCCHoffset)+neCCE+NePUCCH(1) for frequency-division duplexing (FDD), where E is the total number of eCCE in one PRB, IPRB

    ePDCCHlowest

    index is a lowest PRB index including at least one eCCE of ePDCCH resources, NPRB,ePDCCHoffset is a starting PRB index for an ePDCCH region, neCCE is a first eCCE index number in a lowest PRB used for transmission of the corresponding ePDCCH in a downlink subframe 0≦

    neCCE<

    E, and NePUCCH(1) is a starting PUCCH channel index for an ePUCCH region in an uplink subframe and is configured by high layers for each user equipment (UE);

    or

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