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Method and system for dynamic ACK/NACK repetition for robust downlink MAC PDU transmission in LTE

  • US 10,020,925 B2
  • Filed: 01/29/2015
  • Issued: 07/10/2018
  • Est. Priority Date: 06/18/2007
  • Status: Active Grant
First Claim
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1. A method performed by a user equipment to provide acknowledgement (ACK) or negative acknowledgement (NACK) feedback regarding a downlink transmission, the method comprising:

  • upon receipt of the downlink transmission;

    transmitting, by the user equipment, a first ACK/NACK feedback response corresponding to the downlink transmission in a first subframe using a first cyclic shift, andtransmitting, by the user equipment, a plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission, each of the plurality of additional ACK/NACK feedback responses corresponding to the same downlink transmission being transmitted in a respective subframe using a respective cyclic shift different from the first cyclic shift used by the first ACK/NACK response corresponding to the same downlink transmission.

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