Beam failure processing method, terminal, and network device

1. A beam failure processing method, applied to a terminal side, comprising:

sending a beam failure recovery request to a network device in a case that a beam failure event occurs on an active Bandwidth Part (active BWP); and

receiving, through a Control Resource Set for Beam Failure Recovery (CORESET-BFR) in at least one target downlink BWP, response information fed back by the network device according to the beam failure recovery request, wherein the target downlink BWP corresponds to at least two BWPs, and the at least two BWPs comprises the active BWP;

wherein a quantity of the at least one target downlink BWP configured with the CORESET-BFR is smaller than a quantity of configured downlink BWPs of the terminal side.

2. The beam failure processing method according to claim 1 , wherein the receiving through the CORESET-BFR in the target downlink BWP the response information fed back by the network device according to the beam failure recovery request comprises:

in a case that the target downlink BWP is the active BWP where the beam failure event occurs, receiving, through the CORESET-BFR in the target downlink BWP, the response information fed back by the network device according to the beam failure recovery request; or

in a case that the target downlink BWP is different from the active BWP where the beam failure event occurs, switching to the target downlink BWP, and receiving, through the CORESET-BFR in the target downlink BWP, the response information fed hack by the network device according to the beam failure recovery request.

3. The beam failure processing method according to claim 1 , wherein the target downlink BWP is predefined, or configured by the network device based on configuration information for beam failure recovery.

4. The beam failure processing method according to claim 3 , wherein the configuration information comprises at least one of:

first BWP information of the target downlink BWP where the CORESET-BFR is located;

first resource information of beam failure detection reference signal (Beam Failure Detection Reference Signal, BFD RS);

second resource information of a candidate beam reference signal;

random access resource information for transmitting the beam failure recovery request; and

second BWP information of a downlink BWP where other CORESET is located, wherein the other CORESET is a CORESET other than the CORESET-BFR.

5. The beam failure processing method according to claim 4 , wherein the first resource information comprises at least one of:

a quasi co-location relationship between a BFD RS resource and the CORESET-BFR; and

a quasi co-location relationship between the BFD RS resource and a target CORESET, wherein an index of the target CORESET is a preset value.

6. The beam failure processing method according to claim 4 , wherein in a case that the configuration information comprises resource information of the candidate beam reference signal and the random access resource information, the sending the beam failure recovery request to the network device comprises;

determining a target random access resource corresponding to a target beam according to a correspondence between the resource information of the candidate beam reference signal and the random access resource information, wherein the target beam is one candidate beam meeting a preset condition of at least one candidate beam; and

sending the beam failure recovery request to the network device through the target random access resource.

7. The beam failure processing method according to claim 6 , wherein prior to the determining the target random access resource corresponding to the target beam according to the correspondence between the resource information of the candidate beam reference signal and the random access resource information, the method further comprises:

detecting at least one candidate beam reference signal, and determining candidate beams meeting the preset condition; and

determining one of the candidate beams meeting the preset condition as the target beam.

8. The beam failure processing method according to claim 6 , wherein the random access resource information comprises: third BWP information of an uplink BWP where a random access resource is located.

9. The beam failure processing method according to claim 6 , wherein the configuration information further comprises:

indication information configured to indicate a mapping relationship between an uplink BWP where a random access resource is located and the target downlink BWP.

10. The beam failure processing method according to claim 9 , wherein subsequent to the sending the beam failure recovery request to the network device through the target random access resource, the method further comprises:

determining, according to the indication information, the target downlink BWP corresponding to the uplink BWP Where the target random access resource is located.

11. The beam failure processing method according to claim 1 , wherein prior to the sending the beam failure recovery request to the network device, the method further comprises:

detecting a BFD RS on the active BWP to determine whether the beam failure event occurs.

12. A terminal, comprising: a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to:

send a beam failure recovery request to a network device in a case that a beam failure event occurs on an active Bandwidth Part (active BWP); and

receive, through a Control Resource Set for Beam Failure Recovery (CORESET-BFR) in at least one target downlink BWP, response information fed back by the network device according to the beam failure recovery request, wherein the target downlink BWP corresponds to at least two BWPs, and the at least two BWPs comprises the active BWP;

wherein a quantity of the at least on target downlink BWP configured with the CORESET-BFR is smaller than a quantity of configured downlink BWPs of the terminal side.

13. The terminal according to claim 12 , wherein the processor executes the computer program to:

in a case that the target downlink BWP is the active BWP where the beam failure event occurs, receive, through the CORESET-BFR in the target downlink BWP, the response information fed back by the network device according to the beam failure recovery request; or

in a case that the target downlink BWP is different from the active BWP where the beam failure event occurs, switch to the target downlink BWP, and receive, through the CORESET-BFR in the target downlink BWP, the response information fed back by the network device according to the beam failure recovery request.

14. The terminal according to claim 12 , wherein the target downlink BWP is predefined, or configured by the network device based on configuration information for beam failure recovery.

15. A beam failure processing method, applied to a network device side, comprising:

receiving a beam failure recovery request from a terminal in a case that a beam failure event occurs on an active Bandwidth Part (active BWP); and

sending, on a Control Resource Set for Beam Failure Recovery (CORESET-BFR) in at least one target downlink BWP, response information to the terminal according to the beam failure recovery request, wherein the target downlink BWP corresponds to at least two BWPs, and the at least two BWPs comprises the active BWP;

wherein a quantity of the at least One target downlink BWP configured with the CORESET-BFR is smaller than a quantity of the at least one target downlink BWP configured with the terminal side.

16. The beam failure processing method according to claim 15 , wherein the target downlink BWP is predefined, or configured by the network device based on configuration information for beam failure recovery.

17. The beam failure processing method according to claim 16 , wherein the configuration information comprises at least one of:

first BWP information of the target downlink BWP where the CORESET-BFR is located;

first resource information of beam failure detection reference signal (Beam Failure Detection Reference Signal, BFD RS);

second resource information of a candidate beam reference signal;

random access resource information for transmitting the beam failure recovery request; and

second BWP information of a downlink BWP where other CORESET is located, wherein the other CORESET is a CORESET other than the CORESET-BFR.

18. The beam failure processing method according to claim 17 , wherein the first resource information comprises at least one of:

a quasi co-location relationship between a BFD RS resource and the CORESET-BFR; and

a quasi co-location relationship between the BFD RS resource and a target CORESET, wherein an index of the target CORESET is a preset value.

19. The beam failure processing method according to claim 17 , wherein the random access resource information comprises: third BWP information of an uplink BWP where a random access resource is located.

20. A network device, comprising a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the beam failure processing method according to claim 15 .