Apparatus and method for transmission of uplink control information in network cooperative communication
The disclosure relates to a communication technique and a system for integrating a 5G communication system with IoT technology to support a higher data transmission rate after a 4G system. The disclosure may be applied to intelligent services, based on 5G communication technology and IoT-related technologies (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, etc.).
1. A method performed by a terminal for transmitting hybrid automatic repeat request (HARQ) information for multi-transmission and reception points (TRPs) in a wireless communication system, the method comprising:
receiving, from a base station, first information on a plurality of repetition numbers and second information on a plurality of HARQ feedback timings via radio resource control (RRC) signaling;
receiving, from the base station, downlink control information (DCI) including third information indicating one of the plurality of repetition numbers and fourth information indicating one of the plurality of HARQ feedback timings;
performing physical downlink shared channel (PDSCH) receptions in a plurality of slots based on a repetition number indicated by the DCI; and
transmitting, to the base station, the HARQ information for the PDSCH receptions in a determined based on a last slot of the plurality of first slots and a HARQ feedback timing indicated by the DCI, wherein the HARQ information corresponding to a PDSCH reception in a slot other than the last slot of the plurality of slots is set to a negative acknowledgment (NACK).
2. The method of claim 1 , wherein the transmitting the HARQ information further comprises transmitting an acknowledgment (ACK) in the slot in case that the PDSCH receptions are performed successfully.
3. The method of claim 1 , wherein a number of the HARQ feedback timings is configured to a maximum of 8.
4. The method of claim 1 , wherein fifth information on a start symbol and a number of symbols of the plurality of slots is received via the RRC signaling.
5. A method for receiving hybrid automatic repeat request (HARQ) information for multi-transmission and reception points (TRPs) performed by a base station in a wireless communication system, the method comprising:
transmitting, to a terminal, first information on a plurality of repetition numbers and second information on a plurality of HARQ feedback timings via radio resource control (RRC) signaling;
transmitting, to the terminal, downlink control information (DCI) including third information indicating one of the plurality of repetition numbers and fourth information indicating one of the plurality of HARQ feedback timings;
transmitting, to the terminal, physical downlink shared channels (PDSCHs) in a plurality of slots based on a repetition number indicated by the DCI; and
receiving, from the terminal, the HARQ information for the PDSCHs in a slot determined based on a last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, wherein HARQ information corresponding to a PDSCH in a slot other than the last slot of the plurality of slots is set to a negative acknowledgment (NACK).
6. The method of claim 5 , wherein an acknowledgment (ACK) is received in the slot in case that PDSCHs are successfully transmitted.
7. The method of claim 5 , wherein a number of the HARQ feedback timings is configured to a maximum of 8.
8. The method of claim 5 , wherein fifth information on a start symbol and a number of symbols of the plurality of slots is received via the RRC signaling.
9. A terminal for transmitting hybrid automatic repeat request (HARQ) information for multi-transmission and reception points (TRPs) in a wireless communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive, from a base station, first information on a plurality of repetition numbers and second information on a plurality of HARQ feedback timings via radio resource control (RRC) signaling,
receive, from the base station, downlink control information (DCI) including third information indicating one of the plurality of repetition numbers and fourth information indicating one of the plurality of HARQ feedback timings,
perform physical downlink shared channel (PDSCH) receptions in a plurality of first slots based on a repetition number indicated by the DCI, and
transmit, to the base station, the HARQ information for the PDSCH receptions in a slot determined based on a last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, wherein the HARQ information corresponding to a PDSCH reception in a slot other than the last slot of the plurality of slots is set to a negative acknowledgment (NACK).
10. The terminal of claim 9 , wherein the controller is configured to transmit an acknowledgment (ACK) in the slot in case that the PDSCH receptions are performed successfully.
11. The terminal of claim 9 , wherein a number of the HARQ feedback timings is configured to a maximum of 8.
12. The terminal of claim 9 , wherein fifth information on a start symbol and a number of symbols of the plurality of slots is received via the RRC signaling.
13. A base station for receiving hybrid automatic repeat request (HARO) information for multi-transmission and reception points (TRPs) in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
transmit, to a terminal, first information on a plurality of repetition numbers and second information on a plurality of HARQ feedback timings via radio resource control (RRC) signaling,
transmit, to the terminal, downlink control information (DCI) including third information indicating one of the plurality of repetition numbers and fourth information indicating one of the plurality of HARO feedback timings,
transmit, to the terminal, physical downlink shared channels (PDSCHs) in a plurality of slots based on a repetition number indicated by the DCI, and
receive, from the terminal, the HARQ information for the PDSCHs in a slot determined based on a last slot of the plurality of slots and a HARO feedback timing indicated by the DCI, wherein the HARQ information corresponding to a PDSCH in a slot other than the last slot of the plurality of slots is set to a negative acknowledgment (NACK).
14. The base station of claim 13 , wherein an acknowledgment (ACK) is received in the slot in case that PDSCHs are successfully transmitted.
15. The base station of claim 13 , wherein a number of the HARQ feedback timings is configured to a maximum of 8.
16. The base station of claim 13 , wherein fifth information on a start symbol and a number of symbols of the plurality of slots is received via the RRC signaling.