Apparatus and method of transmitting and receiving HARQ ACK/NACK information for new radio
Provided are a method of transmitting and receiving HARQ ACK/NACK feedback information in a next-generation/5G radio access network. The method may include receiving, from a base station, HARQ timing indication information to a plurality of the downlink channels, receiving, from the base station, uplink (UL) control channel resource indication information for HARQ feedback to each DL data channel, and transmitting the HARQ information through one or the plurality of the UL control channels indicated by the UL control channel resource indication information in the same slot when the HARQ timing indication information indicates the same slot.
1. A method of transmitting hybrid automatic repeat request (HARQ) information for a downlink (DL) data channel, by a user equipment, the method comprising:
receiving, from a base station, HARQ timing indication information for a plurality of the downlink channels;
receiving, from the base station, uplink (UL) control channel resource indication information for HARQ feedback to each DL data channel; and
transmitting the HARQ information through one or the plurality of the UL control channels indicated by the UL control channel resource indication information in the same slot when the HARQ timing indication information indicates the same slot,
wherein the HARQ timing indication information and the UL control channel resource indication information are received through DL control information, respectively,
wherein when the UL control channel resources indicated by the UL control channel resource indication information are allocated in the same slot for the plurality of the HARQ feedback, the HARQ information is transmitted through one UL control channel in one of the UL control channel resources, and
wherein the one UL control channel resource is the UL control channel resource indicated by a last DL control information among the plurality of the DL control information which includes the UL control channel resource indication information.
2. The method according to claim 1 , wherein the plurality of the HARQ information is multiplexed to one HARQ information, and the one HARQ information is transmitted through one UL control channel in one of the UL control channel resources in the same slot.
3. The method according to claim 1 , wherein the last DL control information is the DL control information with a highest index among the plurality of the DL control information.
4. The method according to claim 1 , wherein the one UL control channel resource is determined as the UL control channel resource indicated by the DL control information with a highest index among the plurality of the DL control information which include the UL control channel resource indication information.
5. The method according to claim 4 , wherein the DL control information is first indexed in a descending order across cell indexes and are then indexed in an ascending order across PDCCH monitoring occasion indexes.
6. The method according to claim 5 , wherein the cell indexes is applied to the carrier aggregation.
7. The method according to claim 1 , wherein when the UL control channel resources indicated by the UL control channel resource indication information are allocated in the same slot for the plurality of the HARQ feedback, the plurality of the HARQ information is transmitted through the plurality of the UL control channels in the plurality of the UL control channel resources in the same slot, respectively.
8. A method of receiving hybrid automatic repeat request (HARQ) information for a downlink (DL) data channel by a base station, the method comprising:
transmitting, to a user equipment(UE), HARQ timing indication information for a plurality of the downlink channels;
transmitting, to the UE, uplink (UL) control channel resource indication information for HARQ feedback to each DL data channel; and
receiving the HARQ information through one or the plurality of the UL control channels indicated by the UL control channel resource indication information in the same slot when the HARQ timing indication information indicates the same slot,
wherein the HARQ timing indication information and the UL control channel resource indication information are transmitted through DL control information, respectively,
wherein when the UL control channel resources indicated by the UL control channel resource indication information are allocated in the same slot for the plurality of the HARQ feedback, the HARQ information is received through one UL control channel in one resource of them, and
wherein the one UL control channel resource is the UL control channel resource indicated by a last DL control information among the plurality of the DL control information which include the UL control channel resource indication information.
9. The method according to claim 8 , wherein the plurality of the HARQ information is multiplexed to one HARQ information, and the one HARQ information is received through one UL control channel in one UL control channel resource of them in the same slot.
10. The method according to claim 8 , wherein the last DL control information is the DL control information with a highest index among the plurality of the DL control information.
11. The method according to claim 8 , wherein the one UL control channel resource is determined as the UL control channel resource indicated by the DL control information with a highest index among the plurality of the DL control information which include the UL control channel resource indication information.
12. The method according to claim 11 , wherein the DL control information is first indexed in a descending order across cell indexes and are then indexed in an ascending order across PDCCH monitoring occasion indexes.
13. The method according to claim 12 , wherein the cell indexes is applied to the carrier aggregation.
14. The method according to claim 8 , wherein when the UL control channel resources indicated by the UL control channel resource indication information are allocated in the same slot for the plurality of the HARQ feedback, the plurality of the HARQ information is received through the plurality of the UL control channels in the plurality of the UL control channel resources in the same slot, respectively.
15. A user equipment for transmitting hybrid automatic repeat request (HARQ) information to a downlink (DL) data channel, comprising:
a receiver configured to receive, from a base station, HARQ timing indication information for a plurality of the downlink channels and control channel resource indication information for HARQ feedback to each DL data channel; and
a transmitter configured to transmit the HARQ information through one or the plurality of the UL control channels indicated by the UL control channel resource indication information in the same slot when the HARQ timing indication information indicates the same slot,
wherein the HARQ timing indication information and the UL control channel resource indication information are received through DL control information, respectively,
wherein when the UL control channel resources indicated by the UL control channel resource indication information are allocated in the same slot for the plurality of the HARQ feedback, the HARQ information is transmitted through one UL control channel in one of the UL control channel resources, and
wherein the one UL control channel resource is the UL control channel resource indicated by a last DL control information among the plurality of the DL control information which includes the UL control channel resource indication information.