Discontinuous reception operation method
The present specification proposes a discontinuous reception operation method characterized by: in a wireless communication system, a terminal in which a plurality of cells are configured performing a physical downlink control channel (PDCCH) monitoring on-duration; receiving bandwidth part (BWP) setting information, wherein the BWP setting information informs a specific BWP; receiving a PDCCH on the basis of the PDCCH monitoring, wherein the PDCCH includes dormant indication information for a specific cell from among the plurality of cells of the terminal; and activating the specific BWP on the basis of the dormant indication information indicating non-dormancy.
1. A method for a discontinuous reception (DRX) operation performed by a user equipment (UE) for which a plurality of cells is configured in a wireless communication system, the method comprising:
performing a physical downlink control channel (PDCCH) monitoring in on-duration;
receiving bandwidth part (BWP) configuration information,
wherein the BWP configuration information informs a specific BWP;
receiving a PDCCH based on the PDCCH monitoring,
wherein the PDCCH includes secondary cell (SCell) dormancy information; and
transmitting (acknowledgement/negative-acknowledgement (ACK/NACK) information for the PDCCH including the SCell dormancy information,
wherein the SCell dormancy information includes a bit, which corresponds to a secondary cell group, having a value for dormancy or a value for non-dormancy, and
wherein the bit having the value for the non-dormancy informs an activation of the specific BWP, which is provided based on the BWP configuration information, based on a current active BWP being a dormant BWP.
2. The method of claim 1 , wherein the UE receives the PDCCH on a primary cell.
3. The method of claim 1 , wherein the UE does not perform the PDCCH monitoring or does not receive a physical downlink shared channel (PDSCH) on the dormant BWP.
4. The method of claim 1 , wherein the dormant BWP is a BWP set by higher layer signaling.
5. The method of claim 1 , wherein a maximum number of BWPs configurable for a cell for the UE is four.
6. The method of claim 1 , wherein the ACK/NACK information includes ACK information, and does not include NACK information.
7. The method of claim 1 , wherein the ACK/NACK information includes ACK information and NACK information.
8. The method of claim 1 , wherein the UE receives a physical downlink shared channel (PDSCH) or the PDCCH on the specific BWP.
9. The method of claim 1 , wherein the ACK/NACK information is transmitted in a slot after a specific number of slots from a slot in which the PDCCH is transmitted.
10. The method of claim 1 , wherein the ACK/NACK information is transmitted in a slot after a specific number of slots from a slot in which a physical downlink shared channel (PDSCH) scheduled by the PDCCH is transmitted.
11. The method of claim 10 , wherein the PDSCH is a virtual PDSCH that is not actually scheduled.
12. The method of claim 1 , wherein the plurality of cells includes a primary cell and a SCell,
wherein the primary cell is a cell in which the UE performs an initial connection establishment procedure or a connection re-establishment procedure, and the SCell is a cell in which additional radio resources are provided to the UE.
13. A user equipment (UE) comprising:
one or more memories storing instructions;
one or more transceivers; and
one or more processors coupling the one or more memories and the one or more transceivers,
wherein the one or more processors execute the instructions to:
perform a physical downlink control channel (PDCCH) monitoring in on-duration;
receive bandwidth part (BWP) configuration information,
wherein the BWP configuration information informs a specific BWP;
receive a PDCCH based on the PDCCH monitoring,
wherein the PDCCH includes secondary cell (SCell) dormancy information; and
transmit acknowledgement/negative-acknowledgement (ACK/NACK) information for the PDCCH including the SCell dormancy information,
wherein the SCell dormancy information includes a bit, which corresponds to a secondary cell group, having a value for dormancy or a value for non-dormancy, and
wherein the bit having the value for the non-dormancy informs an activation of the specific BWP, which is provided based on the BWP configuration information, based on a current active BWP being a dormant BWP.
14. An apparatus configured to control a user equipment (UE), the apparatus comprising:
one or more processors; and
one or more memories operably coupled by the one or more processors and storing instructions,
wherein the one or more processors execute the instructions to:
perform a physical downlink control channel (PDCCH) monitoring in on-duration;
receive bandwidth part (BWP) configuration information,
wherein the BWP configuration information informs a specific BWP;
receive a PDCCH based on the PDCCH monitoring,
wherein the PDCCH includes secondary cell (SCell) dormancy information; and
transmit acknowledgement/negative-acknowledgement (ACK/NACK) information for the PDCCH including the SCell dormancy information,
wherein the SCell dormancy information includes a bit, which corresponds to a secondary cell group, having a value for dormancy or a value for non-dormancy, and
wherein the bit having the value for the non-dormancy informs an activation of the specific BWP, which is provided based on the BWP configuration information, based on a current active BWP being a dormant BWP.