Method and apparatus for transmitting uplink control information in a wireless communication system
First Claim
1. A method for transmitting uplink control information of a user equipment (UE) for which a plurality of serving cells are configured in a wireless communication system, the method comprising:
- receiving downlink control information on at least one physical downlink control channel (PDCCH) in a first subframe through a first serving cell among the plurality of serving cells;
receiving data on at least one physical downlink shared channel (PDSCH) in the first subframe through at least one serving cell among the plurality of serving cells based on the downlink control information; and
transmitting acknowledgement/negative acknowledgement (ACK/NACK) indicating success or failure of decoding of the data in a second subframe,wherein the ACK/NACK is transmitted by using first resource within the second subframe when one PDSCH is received only through the first serving cell,wherein the ACK/NACK is transmitted by using a second resource within the second subframe when a plurality of PDSCHs are received through two or more serving cells from among the plurality of serving cells,wherein the first resource is allocated dynamically by a PDCCH which schedules the first serving cell, and the second resource is predetermined,wherein, among the at least one PDCCH, a PDCCH which schedules a serving cell except for the first serving cell includes PDSCH aggregate information indicating a total number of PDSCHs transmitted through the plurality of serving cells in the first subframe, andwherein the PDSCH aggregate information is transmitted through a transmission power control (TPC) field of an uplink component carrier.
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Abstract
The present invention relates to a method for a terminal, in which a plurality of serving cells is established, to transmit uplink control information in a wireless communication system. The method comprises the following steps: receiving at least one physical downlink control channel (PDCCH) in a first subframe via a first serving cell from among the plurality of serving cells in a first subframe; receiving at least one physical downlink shared channel (PDSCH) via at least one serving cell from among the plurality of serving cells in the first subframe based on said at least on PDCCH; and transmitting, in a second subframe, an acknowledgement/non-acknowledgement (ACK/NACK) which indicates whether or not a decoding for said at least one PDSCH has succeeded. The ACK/NACK is transmitted using a first resource through only the first serving cell, and transmitted using a second resource in the second subframe if said at least one PDSCH is received through two or more serving cells from among the plurality of serving cells. The first resource is dynamically allocated through the PDCCH which schedules the first serving cell, and the second resource is designated in advance.
13 Citations
11 Claims
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1. A method for transmitting uplink control information of a user equipment (UE) for which a plurality of serving cells are configured in a wireless communication system, the method comprising:
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receiving downlink control information on at least one physical downlink control channel (PDCCH) in a first subframe through a first serving cell among the plurality of serving cells; receiving data on at least one physical downlink shared channel (PDSCH) in the first subframe through at least one serving cell among the plurality of serving cells based on the downlink control information; and transmitting acknowledgement/negative acknowledgement (ACK/NACK) indicating success or failure of decoding of the data in a second subframe, wherein the ACK/NACK is transmitted by using first resource within the second subframe when one PDSCH is received only through the first serving cell, wherein the ACK/NACK is transmitted by using a second resource within the second subframe when a plurality of PDSCHs are received through two or more serving cells from among the plurality of serving cells, wherein the first resource is allocated dynamically by a PDCCH which schedules the first serving cell, and the second resource is predetermined, wherein, among the at least one PDCCH, a PDCCH which schedules a serving cell except for the first serving cell includes PDSCH aggregate information indicating a total number of PDSCHs transmitted through the plurality of serving cells in the first subframe, and wherein the PDSCH aggregate information is transmitted through a transmission power control (TPC) field of an uplink component carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A user equipment, comprising:
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a radio frequency (RF) unit transmitting or receiving radio signals; and a processor connected to the RF unit, wherein the processor receives downlink control information on at least one physical downlink control channel (PDCCH) in a first subframe through a first serving cell among a plurality of serving cells, receives data on at least one physical downlink shared channel (PDSCH) in the first subframe through at least one serving cell among the plurality of serving cells based on the downlink control information, and transmits acknowledgement/negative acknowledgement (ACK/NACK) indicating success or failure of decoding of the data in a second subframe, wherein the ACK/NACK is transmitted by using a first resource within the second subframe when one PDSCH is received only through the first serving cell; wherein the ACK/NACK is transmitted by using a second resource within the second subframe when a plurality of PDSCHs are received through two or more serving cells among the plurality of serving cells, wherein the first resource is allocated dynamically through a PDCCH which schedules the first serving cell, and the second resource is predetermined, wherein, among the at least one PDCCH, a PDCCH which schedules a serving cell except for the first serving cell includes PDSCH aggregate information indicating a total number of PDSCHs transmitted through the plurality of serving cells in the first subframe, and wherein the PDSCH aggregate information is transmitted through a transmission power control (TPC) field of an uplink component carrier.
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Specification