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Method for transmitting HARQ ACK/NACK and wireless device using same

  • US 9,838,182 B2
  • Filed: 05/24/2013
  • Issued: 12/05/2017
  • Est. Priority Date: 05/24/2012
  • Status: Active Grant
First Claim
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1. A method for transmitting hybrid automatic repeat request (HARQ) positive-acknowledgement (ACK)/negative-acknowledgement (NACK) in a wireless communication system, the method comprising:

  • receiving, by a wireless device, downlink control information from a first base station on a downlink control channel;

    receiving, by the wireless device, a downlink transport block from the first base station on a downlink shared channel according to the downlink control information; and

    transmitting, by the wireless device and to a second base station, a first uplink control channel carrying ACK/NACK for the downlink transport block received from the first base station,wherein the first uplink control channel is configured using a virtual cell identity of the second base station and an indicator for determining a radio resource for the first uplink control channel,wherein the virtual cell identity of the second base station and the indicator are received from the first base station,wherein the radio resource for the first uplink control channel carrying the ACK/NACK is separated from a radio resource for a second uplink control channel for the second base station,wherein a region of the radio resource for the first uplink control channel is determined based on a size of a control region for the downlink control channel, andwherein the first uplink control channel is transmitted at a first transmission power different from a second transmission power for transmitting the second uplink control channel.

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