Method and apparatus performing uplink transmission and reception in wireless communication system
Disclosed are a method and apparatus for performing uplink transmission in a wireless communication system. The method by which a terminal performs uplink transmission, according to an embodiment of the present disclosure, comprises the steps of: receiving, from a base station, configuration information related to at least one serving cell; receiving a unicast physical downlink shared channel (PDSCH) or a multicast PDSCH from the base station in a first serving cell of a secondary physical uplink control channel (PUCCH) group from among the at least one serving cell; and transmitting, to the base station, hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information regarding the unicast PD SCH or the first multicast PDSCH, wherein on the basis that the multicast PDSCH is received from the base station in the first serving cell, the HARQ-ACK information may be transmitted to the base station by using a PUCCH resource of a second serving cell of a primary PUCCH group from among the at least one serving cell.
1 . A method comprising:
receiving, by a user equipment (UE) from a base station, configuration information related to at least two serving cells;
receiving, by the UE from the base station, a unicast physical downlink shared channel (PDSCH) or multicast PDSCH in a secondary cell (SCell) of a secondary physical uplink control channel (PUCCH) group among the at least two serving cells; and
transmitting, by the UE to the base station, a PUCCH including hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information for the unicast PDSCH or the multicast PDSCH,
wherein, based on the multicast PDSCH being received from the base station in the SCell, the HARQ-ACK information is transmitted to the base station using a PUCCH resource of a primary cell (PCell) of a primary PUCCH group among the two serving cell, and
wherein, based on the unicast PDSCH being received from the base station in the SCell, the HARQ-ACK information is transmitted to the base station using a PUCCH resource of the SCell.
2 . The method of claim 1 , wherein:
the secondary PUCCH group does not include the PCell.
3 . The method of claim 1 , wherein:
based on the unicast PDSCH or the multicast PDSCH being received from the base station in the PCell, the HARQ-ACK information is transmitted to the base station using PUCCH resources of the PCell.
4 . The method of claim 1 , wherein:
based on the SCell being deactivated, a common frequency resource (CFR) associated with the SCell is deactivated.
5 . The method of claim 1 , wherein:
a CFR associated with the SCell is deactivated by an radio resource control (RRC) message, multicast control channel (MCCH) message, medium access control (MAC)-control element (CE), or downlink control information (DCI) received from the base station.
6 . The method of claim 5 , wherein:
the DCI includes information indicating at least one of an index of a CFR associated with the SCell, an index or carrier indicator field (CIF) value of the SCell, or an index of a bandwidth part (BWP) associated with the CFR.
7 . The method of claim 1 , wherein:
capability information related to whether the multicast PDSCH can be received in the SCell is transmitted to the base station.
8 . A user equipment (UE) comprising:
at least one transceiver; and
at least one processor coupled to the at least one transceiver,
wherein the at least one processor is configured to:
receive, from a base station through the at least one transceiver, configuration information related to at least two serving cells;
receive, from the base station through the at least one transceiver, a unicast physical downlink shared channel (PDSCH) or multicast PDSCH in a secondary cell (SCell) of a secondary physical uplink control channel (PUCCH) group among the at least two serving cells; and
transmit, to the base station through the at least one transceiver, a PUCCH including hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information for the unicast PDSCH or the multicast PDSCH,
wherein, based on the multicast PDSCH being received from the base station in the SCell, the HARQ-ACK information is transmitted to the base station using a PUCCH resource of a primary cell (PCell) of a primary PUCCH group among the at least two serving cells, and
wherein, based on the unicast PDSCH being received from the base station in the SCell, the HARQ-ACK information is transmitted to the base station using a PUCCH resource of the SCell.
9 . A base station comprising:
at least one transceiver; and
at least one processor coupled to the at least one transceiver,
wherein the at least one processor is configured to:
transmit, to a user equipment (UE) through the at least one transceiver, configuration information related to at least two serving cells;
transmit, to the UE through the at least one transceiver, a unicast physical downlink shared channel (PDSCH) or multicast PDSCH in a secondary cell (SCell) of a secondary physical uplink control channel (PUCCH) group among the at least two serving cells; and
receive, from the UE through the at least one transceiver, a PUCCH including hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information for the unicast PDSCH or the multicast PDSCH,
wherein, based on the multicast PDSCH being transmitted to the UE in the SCell, the HARQ-ACK information is received from the UE using a PUCCH resource of a primary cell (PCell) of a primary PUCCH group among the at least two serving cells, and
wherein, based on the unicast PDSCH being transmitted to the UE in the SCell, the HARQ-ACK information is received from the UE using a PUCCH resource of the SCell.