Feedback information transmission method and apparatus

1. A feedback information transmission method, wherein the method comprises:

receiving, by a terminal device, M data blocks corresponding to control information of N downlink control channels, wherein the M data blocks are carried on a same carrier frequency, N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 2;

determining, by the terminal device, that the N downlink control channels are located in a same search space;

in response to determining that the N downlink control channels are located in the same search space, determining, by the terminal device, a target resource for uplink based on control channel elements in which the N downlink control channels are located, wherein determining the target resource comprises:

calculating a position of the target resource based on the control channel elements:

determining numbers of the control channel elements for a search space setting identifier; and

determining the target resource based on the search space setting identifier; and

sending, by the terminal device, feedback information for the M data blocks on the target resource, wherein the feedback information is in response to received data from the M data blocks.

2. The method according to claim 1 , wherein the sending, by the terminal device, feedback information for the M data blocks on the target resource comprises:

sending, by the terminal device, the feedback information for the M data blocks on the target resource in a preset format, wherein the preset format is obtained from pre-stored information in the terminal device, or is obtained from the control information of N downlink control channels .

3. The method according to claim 2 , wherein the preset format comprises a quantity of bits of the feedback information; and

the sending, by the terminal device, the feedback information for the M data blocks on the target resource in a preset format comprises:

sending, by the terminal device, the feedback information for the M data blocks on the target resource based on the quantity of bits of the feedback information.

4. The method according to claim 2 , wherein the preset format comprises an arrangement order of the feedback information, wherein the arrangement order of the feedback information is determined based on a quantity of symbols or slots corresponding to the target resource; and

the sending, by the terminal device, the feedback information for the M data blocks on the target resource in a preset format comprises:

sending, by the terminal device, the feedback information for the M data blocks on the target resource based on the arrangement order of the feedback information.

5. The method according to claim 1 , wherein the method further comprises:

determining, by the terminal device, a quantity of symbols or slots corresponding to the target resource;

determining an arrangement order of the feedback information based on the quantity of symbols or slots corresponding to the target resource; and wherein

the sending, by the terminal device, feedback information for the M data blocks on the target resource comprises:

sending, by the terminal device, the feedback information for the M data blocks on the target resource based on the arrangement order of the feedback information.

6. The method according to claim 1 , wherein the determining, by the terminal device, a target resource comprises:

determining, by the terminal device, the target resource based on configuration information, wherein the configuration information is included in at least one of:

information pre-stored in the terminal device;

higher layer signaling;

physical layer signaling; or

information carried on the N downlink control channels.

7. The method according to claim 6 , wherein when the configuration information is information carried on a downlink control channel, the configuration information further comprises piggyback indication information, and the piggyback indication information indicates whether to perform piggyback feedback;

the determining, by the terminal device, the target resource based on configuration information comprises:

when the piggyback indication information indicates that piggyback feedback is to be performed, determining, by the terminal device as the target resource, a resource corresponding to an uplink data channel; and

the sending, by the terminal device, feedback information for the M data blocks on the target resource comprises:

sending, by the terminal device on the target resource, feedback information for a data block corresponding to the piggyback indication information.

8. The method according to claim 6 , wherein when the configuration information is information carried on a downlink control channel, the configuration information further comprises piggyback indication information, and the piggyback indication information indicates whether to perform piggyback feedback;

the determining, by the terminal device, the target resource based on configuration information comprises:

when the piggyback indication information indicates that piggyback feedback is not to be performed, determining, by the terminal device as the target resource, a resource corresponding to an uplink control channel; and

the sending, by the terminal device, feedback information for the M data blocks on the target resource comprises:

sending, by the terminal device on the target resource, feedback information for a data block corresponding to the piggyback indication information.

9. The method according to claim 1 , wherein the determining, by the terminal device, a target resource comprises:

determining, by the terminal device, the target resource based on resource configuration information carried on the N downlink control channels.

10. The method according to claim 9 , wherein the determining, by the terminal device, the target resource based on resource configuration information carried on the N downlink control channels comprises:

determining, by the terminal device based on control channel elements in which the N downlink control channels are located, a target resource corresponding to each downlink control channel; and

the sending, by the terminal device, feedback information for the M data blocks on the target resource comprises:

sending, by the terminal device on the target resource corresponding to each downlink control channel, feedback information for each data block corresponding to each downlink control channel.

11. A terminal device, wherein the terminal device comprises:

a non-transitory memory storage comprising instructions; and

one or more hardware processors in communication with the non-transitory memory storage, wherein the one or more hardware processors execute the instructions to cause the terminal device to:

receive M data blocks corresponding to control information of N downlink control channels, wherein the M data blocks are carried on a same carrier frequency, N is a positive integer greater than or equal to 2, M is a positive integer greater than or equal to 2;

determine, by the terminal device, that the N downlink control channels are located in a same search space;

in response to determining that the N downlink control channels are located in the same search space, determine a target resource for uplink based on control channel elements in which the N downlink control channels are located, wherein determining the target resource comprises:

calculating a position of the target resource based on the control channel elements;

determining numbers of the control channel elements for a search space setting identifier; and

determining the target resource based on the search space setting identifier; and

send feedback information for the M data blocks on the target resource, wherein the feedback information is in response to received data from the M data blocks.

12. The terminal device according to claim 11 , wherein the one or more hardware processors execute the instructions to cause the terminal device to:

send the feedback information for the M data blocks on the target resource in a preset format, wherein the preset format is obtained from pre-stored information in the terminal device, or is obtained from the control information of N downlink control channels.

13. The terminal device according to claim 12 , wherein the preset format comprises a quantity of bits of the feedback information; and

the one or more hardware processors execute the instructions to cause the terminal device to send the feedback information for the M data blocks on the target resource based on the quantity of bits of the feedback information.

14. The terminal device according to claim 12 , wherein the preset format comprises an arrangement order of the feedback information, wherein the arrangement order of the feedback information is determined based on a quantity of symbols or slots corresponding to the target resource; and

the one or more hardware processors execute the instructions to cause the terminal device to send the feedback information for the M data blocks on the target resource based on the arrangement order of the feedback information.

15. The terminal device according to claim 11 , wherein the one or more hardware processors execute the instructions to cause the terminal device to: determine a quantity of symbols or slots corresponding to the target resource;

determine an arrangement order of the feedback information based on the quantity of symbols or slots corresponding to the target resource; and

send the feedback information for the M data blocks on the target resource based on the arrangement order of the feedback information.

16. The terminal device according to claim 11 , wherein the one or more hardware processors execute the instructions to cause the terminal device to:

determine the target resource based on configuration information, wherein the configuration information is included in at least one of:

information pre-stored in the terminal device;

higher layer signaling;

physical layer signaling; or

information carried on the N downlink control channels.

17. The terminal device according to claim 16 , wherein when the configuration information is information carried on a downlink control channel, the configuration information further comprises piggyback indication information, and the piggyback indication information indicates whether to perform piggyback feedback; and

the one or more hardware processors execute the instructions to cause the terminal device to:

when the piggyback indication information indicates that piggyback feedback is to be performed, determine, as the target resource, a resource corresponding to an uplink data channel; and

send, on the target resource, feedback information for a data block corresponding to the piggyback indication information.

18. The terminal device according to claim 16 , wherein when the configuration information is information carried on a downlink control channel, the configuration information further comprises piggyback indication information, and the piggyback indication information indicates whether to perform piggyback feedback; and

the one or more hardware processors execute the instructions to cause the terminal device to:

when the piggyback indication information indicates that piggyback feedback is not to be performed, determine, as the target resource, a resource corresponding to an uplink control channel; and

send, on the target resource, feedback information for a data block corresponding to the piggyback indication information.

19. The terminal device according to claim 11 , wherein the control information of N downlink control channels comprises N pieces of downlink control information that are corresponding to the N downlink control channels; and

the target resource is determined based on the N pieces of downlink control information.

20. The terminal device according to claim 19 , wherein the one or more hardware processors execute the instructions to cause the terminal device to:

determine, based on control channel elements in which the N downlink control channels are located, a target resource corresponding to each downlink control channel; and

send, on the target resource corresponding to each downlink control channel, feedback information for each data block corresponding to each downlink control channel.