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Method and apparatus for determining number of HARQ processes in wireless communication system

  • US 10,193,663 B2
  • Filed: 07/19/2017
  • Issued: 01/29/2019
  • Est. Priority Date: 12/18/2012
  • Status: Active Grant
First Claim
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1. A method for determining a number of hybrid automatic repeat request (HARQ) processes in a carrier aggregation system in which a plurality of serving cells are configured, the method performed by a user equipment and comprising:

  • receiving data in a downlink subframe of a second serving cell; and

    transmitting a positive acknowledgement/negative-acknowledgement (ACK/NACK) signal in response to the data in an uplink subframe of a first serving cell,wherein the first serving cell uses a frequency division duplex (FDD) frame and the second serving cell uses either a time division duplex (TDD) frame or a FDD frame,wherein when the second serving cell uses the TDD frame, the TDD frame is configured with any one of uplink-downlink configurations according to a table as follows;

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