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 for transmitting hybrid automatic repeat request (HARQ) information for multi-transmission and reception points (TRPs) performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, a list of physical downlink shared channel (PDSCH) time domain resources via radio resource control (RRC) signaling, each of the PDSCH time domain resources including a slot offset between downlink control information (DCI) and a PDSCH scheduled by the DCI;
receiving, from the base station, the DCI including a field indicating one of the PDSCH time domain resources and an indicator, wherein the field indicates a repetition number;
performing PDSCH receptions on the one of the PDSCH time domain resources indicated by the field in a plurality of slots based on the repetition number; and
transmitting, to the base station, the HARQ information for the PDSCH receptions,
wherein the HARQ information corresponding to a first PDSCH reception in a first slot other than a last slot of the plurality of slots is set to a negative acknowledgment (NACK).
2. The method of claim 1 , wherein the HARQ information corresponding to a second PDSCH reception in the last slot of the plurality of slots is set to an acknowledgment (ACK) in case that a PDSCH is received successfully.
3. The method of claim 1 ,
wherein a plurality of HARQ feedback timings are received via the RRC signaling,
wherein the DCI includes an indicator indicating one of the plurality of HARQ feedback timings,
wherein the HARQ information is transmitted in a second slot determined based on the last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, and
wherein a number of the HARQ feedback timings is configured to a maximum of 8.
4. The method of claim 1 , wherein a start symbol and a number of symbols of the plurality of slots are received via the RRC signaling.
5. A method for transmitting 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, a list of physical downlink shared channel (PDSCH) time domain resources via radio resource control (RRC) signaling, each of the PDSCH time domain resources including a slot offset between downlink control information (DCI) and a PDSCH scheduled by the DCI;
transmitting, to the terminal, the DCI including a field indicating one of the PDSCH time domain resources and an indicator, wherein the field indicates a repetition number;
transmitting, to the terminal, PDSCHs on the one of the PDSCH time domain resources indicated by the field in a plurality of slots based on the repetition number; and
receiving, from the terminal, the HARQ information for the PDSCHs,
wherein the HARQ information corresponding to a first PDSCH in a first slot other than a last slot of the plurality of slots is set to a negative acknowledgment (NACK).
6. The method of claim 5 , wherein the HARQ information corresponding to a second PDSCH in the last slot of the plurality of slots is set to an acknowledgment (ACK) in case that a PDSCH is transmitted successfully.
7. The method of claim 5 ,
wherein a plurality of HARQ feedback timings are transmitted via the RRC signaling,
wherein the DCI includes an indicator indicating one of the plurality of HARQ feedback timings, and
wherein the HARQ information is received in a second slot determined based on the last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, and
wherein a number of the HARQ feedback timings is configured to a maximum of 8.
8. The method of claim 5 , wherein a start symbol and a number of symbols of the plurality of slots are transmitted 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, a list of PDSCH time domain resources via radio resource control (RRC) signaling, each of the PDSCH time domain resources including a slot offset between downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the DCI,
receive, from the base station, the DCI including a field indicating one of the PDSCH time domain resources, wherein the field indicates a repetition number,
perform physical downlink shared channel (PDSCH) receptions on the one of the PDSCH time domain resources indicated by the field in a plurality of slots based on the repetition number, and
transmit, to the base station, the HARQ information for the PDSCH receptions,
wherein the HARQ information corresponding to a first PDSCH reception in a first slot other than a last slot of the plurality of slots is set to a negative acknowledgment (NACK).
10. The terminal of claim 9 , wherein the HARQ information corresponding to a second PDSCH reception in the last slot of the plurality of slots is set to an acknowledgment (ACK) in case that a PDSCH is received successfully.
11. The terminal of claim 9 ,
wherein a plurality of HARQ feedback timings are received via the RRC signaling,
wherein the DCI includes an indicator indicating one of the plurality of HARQ feedback timings,
wherein the HARQ information is transmitted in a second slot determined based on the last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, and
wherein a number of the HARQ feedback timings is configured to a maximum of 8.
12. The terminal of claim 9 , wherein a start symbol and a number of symbols of the plurality of slots are received via the RRC signaling.
13. A base station for transmitting hybrid automatic repeat request (HARQ) information for multi-transmission and reception points (TRPs) in a wireless communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to a terminal, a list of PDSCH time domain resources via radio resource control (RRC) signaling, each of the PDSCH time domain resources including a slot offset between downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the DCI,
transmit, to the terminal, the DCI including a field indicating one of the PDSCH time domain resources and an indicator, wherein the field indicates a repetition number,
transmit, to the terminal, physical downlink shared channels (PDSCHs) on the one of the PDSCH time domain resources indicated by the field in a plurality of slots based on the repetition number, and
receive, from the terminal, the HARQ information for the PDSCHs,
wherein the HARQ information corresponding to a first PDSCH in a first slot other than a last slot of the plurality of slots is set to a negative acknowledgment (NACK).
14. The base station of claim 13 , wherein the HARQ information corresponding to a second PDSCH in the last slot of the plurality of slots is set to an acknowledgment (ACK) in case that a PDSCH is transmitted successfully.
15. The base station of claim 13 ,
wherein a plurality of HARQ feedback timings are transmitted via the RRC signaling,
wherein the DCI includes an indicator indicating one of the plurality of HARQ feedback timings, and
wherein the HARQ information is received in a second slot determined based on the last slot of the plurality of slots and a HARQ feedback timing indicated by the DCI, and
wherein a number of the HARQ feedback timings is configured to a maximum of 8.
16. The base station of claim 13 , wherein a start symbol and a number of symbols of the plurality of slots are transmitted via the RRC signaling.