Method and apparatus for determining number of HARQ processes in wireless communication system
First Claim
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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Abstract
Provided are a method for determining the number of hybrid automatic repeat request (HARQ) processes in a carrier aggregated system configured with a plurality of serving cells, and an apparatus using such a method. The method receives data from a downlink subframe of a second serving cell, and transmits an ACK/NACK signal for the data from an uplink subframe of a first serving cell, wherein the first serving cell uses a first-type frame, the second serving cell uses a second-type frame, and the number of HARQ processes in the second serving cell are determined with respect to each subframe comprised in the second-type frame and on the basis of the number of downlink subframes comprised in each section comprising a set number of subframes.
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Citations
12 Claims
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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:
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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; - View Dependent Claims (2, 3)
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4. A user equipment, comprising:
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a radio frequency (RF) unit configured to transmit and receive a radio signal; and a processor connected to the RF unit, wherein the processor is configured to; receive data in a downlink subframe of a second serving cell and transmit 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; - View Dependent Claims (5, 6)
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7. A method for performing hybrid automatic repeat request (HARQ) processes in a carrier aggregation system, the method performed by a base station and comprising:
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transmitting data in a downlink subframe of a second serving cell; and receiving a positive acknowledgement/negative-acknowledgement (ACK/NACK) signal in response to the data in an uplink subframe of a first serving cell, 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; - View Dependent Claims (8, 9)
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10. A base station, comprising:
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a radio frequency (RF) unit configured to transmit and receive a radio signal; and a processor connected to the RF unit, wherein the processor is configured to; transmit data in a downlink subframe of a second serving cell and receive a positive acknowledgement/negative-acknowledgement (ACK/NACK) signal in response to the data in an uplink subframe of a first serving cell, 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; - View Dependent Claims (11, 12)
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Specification