Method and device for transmitting and receiving signal in wireless communication system
According to an embodiment of the present invention, a terminal may receive an N-number of PDSCHs scheduled by a single DCI, and the terminal may determine, on the basis of a first MCS field of the DCI indicating a specific MCS for first TBs of the N-number of PDSCHs and a first RV field of the DCI indicating only a specific RV for all the first TBs of the N-number of PDSCHs, that all the first TBs are disabled for all of the N-number of PDSCHs.
1 . A method of receiving a signal by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, through a single physical downlink control channel (PDCCH), downlink control information (DCI) for scheduling N physical downlink shared channels (PDSCHs); and
receiving the N PDSCHs based on the DCI,
wherein the DCI includes (i) a first modulation and coding scheme (MCS) field for first transport blocks (TBs) of the N PDSCHs and (ii) a first redundancy version (RV) field including N bits each indicating an RV for each of the first TBs of the N PDSCHs, and
wherein, based on that the first MCS field for the first TBs of the N PDSCHs is set to a specific MCS and that all of the N bits included in the first RV field for the first TBs of the N PDSCHs are set to only a specific RV, the UE determines that all of the first TBs are disabled for an entirety of the N PDSCHs.
2 . The method of claim 1 , wherein an index of the specific MCS is 26, and
wherein an index of the specific RV is 2.
3 . The method of claim 1 , wherein, based on that the first MCS field for the first TBs of the N PDSCHs is set to the specific MCS and that only a part of the N bits included in the first RV field are set to only the specific RV, the UE determines that all of the first TBs are enabled for the entirety of the N PDSCHs.
4 . The method of claim 1 , wherein a maximum number of TBs capable of being received over one PDSCH is set 2, and
wherein the DCI further includes (iii) a second MCS field for second TBs of the N PDSCHs and (iv) a second RV field including N bits each indicating an RV for each of the second TBs of the N PDSCHs.
5 . The method of claim 4 , wherein, based on that the second MCS field for the second TBs of the N PDSCHs is set to the specific MCS and that all of the N bits included in the second RV field for the second TBs of the N PDSCHs are set to only the specific RV, the UE determines that all of the second TBs are disabled for the entirety of the N PDSCHs.
6 . The method of claim 1 , wherein, based on that the first MCS field is set to the specific MCS and that the N bits among all bits of the first RV field are all set to only the specific RV, the UE determines that all of the first TBs are disabled for the entirety of the N PDSCHs.
7 . The method of claim 1 , wherein each of the N bits included in the first RV field indicates either RV0 or RV2 for a first TB of a related PDSCH.
8 . The method of claim 1 , further comprising:
receiving configuration information related to multi-PDSCH scheduling through higher layer signaling.
9 . The method of claim 8 , wherein the higher layer signaling includes a time domain resource allocation (TDRA) table including a plurality of combinations of {K0, SLIV, Mapping Type},
wherein in each combination of {K0, SLIV, mapping type}:
‘K0’ represents a slot offset from a slot of related DCI to a slot of a related PDSCH;
‘SLIV’ represents a start symbol of the related PDSCH and a symbol duration of the related PDSCH; and
‘Mapping Type’ is information for determining a location of a demodulation reference signal (DMRS) symbol of the related PDSCH, and
wherein the DCI indicates one row of the TDRA table.
10 . The method of claim 1 , wherein the DCI further includes a first new data indicator (NDI) field including N bits, and
wherein each of the N bits of the first NDI field is associated with each of the first TBs of the N PDSCHs.
11 . A non-transitory computer-readable recording medium having recorded thereon a program for executing the method of claim 1 .
12 . A device for wireless communication, the device comprising:
a memory configured to store instructions; and
a processor configured to perform operations by executing the instructions,
wherein the operations performed by the processor comprise:
receiving, through a single physical downlink control channel (PDCCH), downlink control information (DCI) for scheduling N physical downlink shared channels (PDSCHs); and
receiving the N PDSCHs based on the DCI,
wherein the DCI includes (i) a first modulation and coding scheme (MCS) field for first transport blocks (TBs) of the N PDSCHs and (ii) a first redundancy version (RV) field including N bits each indicating an RV for each of the first TBs of the N PDSCHs, and
wherein, based on that the first MCS field for the first TBs of the N PDSCHs is set to a specific MCS and that all of the N bits included in the first RV field for the first TBs of the N PDSCHs are set to only a specific RV, the processor is configured to determine that all of the first TBs are disabled for an entirety of the N PDSCHs.
13 . The device of claim 12 , further comprising:
a transceiver configured to transmit or receive a radio signal under control of the processor,
wherein the device is a user equipment (UE) based on the 3rd Generation Partnership Project (3GPP).
14 . A method of transmitting a signal by a base station (BS) in a wireless communication system, the method comprising:
transmitting, through a single physical downlink control channel (PDCCH), downlink control information (DCI) for scheduling N physical downlink shared channels (PDSCHs); and
transmitting the N PDSCHs based on the DCI,
wherein the DCI includes (i) a first modulation and coding scheme (MCS) field for first transport blocks (TBs) of the N PDSCHs and (ii) a first redundancy version (RV) field including N bits each indicating an RV for each of the first TBs of the N PDSCHs, and
wherein the BS informs a user equipment (UE) that all of the first TBs are disabled for an entirety of the N PDSCHs by setting the first MCS field for the first TBs of the N PDSCHs to a specific MCS and setting all of the N bits included in the first RV field for the first TBs of the N PDSCHs to only a specific RV.
15 . A base station (BS) for wireless communication, the BS comprising:
a memory configured to store instructions; and
a processor configured to perform operations by executing the instructions,
wherein the operations performed by the processor comprise:
transmitting, through a single physical downlink control channel (PDCCH), downlink control information (DCI) for scheduling N physical downlink shared channels (PDSCHs); and
transmitting the N PDSCHs based on the DCI,
wherein the DCI includes (i) a first modulation and coding scheme (MCS) field for first transport blocks (TBs) of the N PDSCHs and (ii) a first redundancy version (RV) field including N bits each indicating an RV for each of the first TBs of the N PDSCHs, and
wherein the processor is configured to informs a user equipment (UE) that all of the first TBs are disabled for an entirety of the N PDSCHs by setting the first MCS field for the first TBs of the N PDSCHs to a specific MCS and setting all of the N bits included in the first RV field for the first TBs of the N PDSCHs to only a specific RV.