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PUUCH resource mapping an HARQ-ACK feedback

  • US 10,045,339 B2
  • Filed: 07/17/2014
  • Issued: 08/07/2018
  • Est. Priority Date: 08/21/2013
  • Status: Active Grant
First Claim
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1. A method for wireless communication by a user equipment (UE), comprising:

  • receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration;

    determining hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) timing based on a reference UL-DL subframe configuration;

    determining HARQ resource allocation based on the dynamic UL-DL subframe configuration, wherein determining HARQ resource allocation based on the dynamic UL-DL subframe configuration comprises determining physical uplink control channel (PUCCH) resource allocation based on the dynamic UL-DL subframe configuration, and wherein separate PUCCH regions are configured for UEs capable of supporting dynamic UL-DL subframe configuration and legacy UEs not capable of supporting dynamic UL-DL subframe configuration;

    determining whether a potential collision exists between the HARQ resource allocation and the legacy UE PUCCH region;

    using the legacy PUCCH region for communications between the UE and a base station if no potential collision is determined; and

    transmitting HARQ ACK/NACK based on the HARQ ACK/NACK timing and HARQ resource allocation.

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