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Physical uplink control channel (PUCCH) resource allocation (RA) for a hybrid automatic retransmission re-quest-acknowledge (HARQ-ACK) transmission

  • US 9,191,326 B2
  • Filed: 11/26/2014
  • Issued: 11/17/2015
  • Est. Priority Date: 10/26/2012
  • Status: Active Grant
First Claim
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1. A user equipment (UE) operable to provide physical uplink control channel (PUCCH) resource allocation in time division duplex (TDD) for a hybrid automatic retransmission re-quest-acknowledge (HARQ-ACK) transmission in a subframe n, comprising:

  • first circuitry configured to detect a downlink control channel within a prior specified subframe n−

    k that is received in time before the subframe n, wherein n and k are integers; and

    second circuitry configured to;

    determine that the downlink control channel detected within the prior specified subframe n−

    k is one of a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH); and

    select a legacy PUCCH resource for the HARQ-ACK transmission in the subframe n when the downlink control channel detected within the prior specified subframe n−

    k is the PDCCH and an enhanced PUCCH resource for the HARQ-ACK transmission in the subframe n when the downlink control channel detected within the prior specified subframe is the EPDCCH,wherein kε

    K, where a downlink association set index K is defined in a Table 10.1.3.1-1 in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard Release 11 Technical Specification (TS) 36.213, and K includes a set of M elements {k0, k1, . . . kM-1} depending on the subframe n and an uplink/downlink (UL/DL) configuration.

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