Method for transmitting HARQ ACK/NACK and wireless device using same
First Claim
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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Accused Products
Abstract
Provided are a method for transmitting hybrid automatic repeat request (HARQ) positive-acknowledgement (ACK)/negative-acknowledgement (NACK) in a wireless communication system and a wireless device using the same. The wireless device receives downlink control information from a first base station on a downlink control channel and receives a downlink transmission block on a downlink shared channel according to the downlink control information received from the first base station. The wireless device transmits ACK/NACK to a second base station in response to the downlink transmission block on an uplink control channel. The downlink control information includes an indicator used to determine a radio resource for the uplink control channel.
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Citations
12 Claims
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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:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless device for transmitting hybrid automatic repeat request (HARQ) positive-acknowledgement (ACK)/negative-acknowledgement (NACK) in a wireless communication system, the wireless device comprising:
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a radio frequency (RF) unit configured to transmit and receive a radio signal; and a processor operatively coupled to the RF unit and configured to; receive downlink control information from a first base station on a downlink control channel, receive a downlink transport block from the first base station on a downlink shared channel according to the downlink control information, and transmit, 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 deteimined based on a size of a control region for the downlink control channel, and wherein 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. - View Dependent Claims (10, 11, 12)
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Specification