Method and apparatus for transmitting or receiving wireless signals in wireless communication system
The present invention relates to a wireless communication system and, specifically, to a method and an apparatus therefor, the method comprising the steps of: receiving configuration information related to the maximum number N (N>1) of PDSCHs that can be scheduled by single DCI through a higher layer signal; receiving DCI having scheduling information for K (K<=N) PDSCHs; and transmitting a HARQ-ACK codebook including N pieces of HARQ-ACK information as a response to the K PDSCHs, on the basis of the configuration information.
1. A method of transmitting a wireless signal by a user equipment in a wireless communication system, the method comprising:
receiving, via a higher layer signal, a configuration information related to a maximum number N (>1) of Physical Downlink Shared Channels (PDSCHs) schedulable by a single Downlink Control Information (DCI);
receiving a DCI having a scheduling information regarding K (≤N) PDSCHs; and
transmitting an HARQ-ACK codebook including N Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) informations in response to the K PDSCHs based on the configuration information.
2. The method of claim 1 , wherein the K PDSCHs are received on different cells in a same slot, respectively.
3. The method of claim 1 , wherein the K PDSCHs are received in different slots of a same cell, respectively.
4. The method of claim 1 , wherein the DCI further includes a first Downlink Assignment Index (DAI) and wherein the first DAI indicates a value related to a scheduling order and is changed in DCI unit.
5. The method of claim 4 , wherein the first DAI indicates the value related to the scheduling order in PDSCH unit with reference to a reception timing of the DCI.
6. The method of claim 4 , wherein the DCI further includes a second DAI, wherein the second DAI indicates a value related to a total scheduling number in PDSCH unit with reference to a reception timing of a PDSCH last received among the K PDSCHs.
7. A user equipment used in a wireless communication system, the user equipment comprising:
at least one processor; and
at least one computer memory operatively connected to the at least one processor and enabling the at least one processor to perform an operation when executed, the operation comprising:
receiving, via a higher layer signal, a configuration information related to a maximum number N (>1) of a Physical Downlink Shared Channels (PDSCHs) schedulable by a single Downlink Control Information (DCI);
receiving a DCI having a scheduling information regarding K (≤N) PDSCHs; and
transmitting an HARQ-ACK codebook including N Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) informations in response to the K PDSCHs based on the configuration information.
8. The user equipment of claim 7 , wherein the K PDSCHs are received on different cells in a same slot, respectively.
9. The user equipment of claim 7 , wherein the K PDSCHs are received in different slots of a same cell, respectively.
10. The user equipment of claim 7 , wherein the DCI further includes a first Downlink Assignment Index (DAI) and wherein the first DAI indicates a value related to a scheduling order and is changed in DCI unit.
11. The user equipment of claim 10 , wherein the first DAI indicates the value related to the scheduling order in PDSCH unit with reference to a reception timing of the DCI.
12. The user equipment of claim 10 , wherein the DCI further includes a second DAI, wherein the second DAI indicates a value related to a total scheduling number in PDSCH unit with reference to a reception timing of a PDSCH last received among the K PDSCHs.
13. An apparatus for a communication device, the apparatus comprising:
at least one processor; and
at least one computer memory operatively connected to the at least one processor and enabling the at least one processor to perform an operation when executed, the operation comprising:
receiving, via a higher layer signal, a configuration information related to a maximum number N (>1) of a Physical Downlink Shared Channels (PDSCHs) schedulable by a single Downlink Control Information (DCI);
receiving a DCI having a scheduling information regarding K (≤N) PDSCHs; and
transmitting an HARQ-ACK codebook including N Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) informations in response to the K PDSCHs based on the configuration information.
14. The apparatus of claim 13 , wherein the K PDSCHs are received on different cells in a same slot, respectively.
15. The apparatus of claim 13 , wherein the K PDSCHs are received in different slots of a same cell, respectively.
16. The apparatus of claim 13 , wherein the DCI further includes a first Downlink Assignment Index (DAI) and wherein the first DAI indicates a value related to a scheduling order and is changed in DCI unit.
17. The apparatus of claim 16 , wherein the first DAI indicates the value related to the scheduling order in PDSCH unit with reference to a reception timing of the DCI.
18. The apparatus of claim 16 , wherein the DCI further includes a second DAI, wherein the second DAI indicates a value related to a total scheduling number in PDSCH unit with reference to a reception timing of a PDSCH last received among the K PDSCHs.