SSB transmission indication method and apparatus, terminal, device, and medium

1. A synchronization signal/physical broadcast channel block (SSB) transmission indication method, applied to a terminal and comprising:

receiving SSB transmission indication information, wherein the SSB transmission indication information is used to indicate a candidate time position of an SSB,

wherein the SSB transmission indication information is used to indicate at least one group of candidate time positions, and each group of candidate time positions is used for at least one SSB transmission,

wherein the SSB transmission indication information comprises a bitmap, a value of a bit in the bitmap comprises a first value and/or a second value, the first value indicates that a group of time positions corresponding to the bit is a group of candidate time positions, and the second value indicates that a group of time positions corresponding to the bit is a group of time positions in which SSB transmission is not performed,

wherein each bit in the bitmap corresponds to a quasi co-location index, and each quasi co-location index corresponds to a group of time positions,

wherein the method further comprises:

obtaining a mapping relationship between a random access channel occasion (RO) and a group of candidate time positions based on each group of candidate time positions in the at least one group of candidate time positions.

2. The method according to claim 1 , wherein if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.

3. The method according to claim 1 , further comprising:

performing, based on downlink transmission information, rate matching on the candidate time position indicated by the SSB transmission indication information.

4. The method according to claim 1 , further comprising:

for a physical downlink control channel (PDCCH) candidate, if at least one resource element (RE) of the PDCCH candidate overlaps a resource element of a candidate SSB, skipping monitoring the PDCCH candidate, wherein the candidate SSB is an SSB that may be transmitted in the candidate time position indicated by the SSB transmission indication information.

5. The method according to claim 1 , further comprising:

determining a slot used for physical uplink control channel (PUCCH) repetition transmission, wherein

the slot used for PUCCH repetition transmission comprises N consecutive flexible symbols starting from a first symbol, the N flexible symbols do not overlap the candidate time position indicated by the SSB transmission indication information, and N is a positive integer.

6. A terminal, comprising a processor, a memory, and a computer program stored in the memory and used to be executed by the processor, wherein when the computer program is executed by the processor, a following step is implemented:

receiving synchronization signal/physical broadcast channel block (SSB) transmission indication information, wherein the SSB transmission indication information is used to indicate a candidate time position of an SSB,

wherein the SSB transmission indication information is used to indicate at least one group of candidate time positions, and each group of candidate time positions is used for at least one SSB transmission,

wherein the SSB transmission indication information comprises a bitmap, a value of a bit in the bitmap comprises a first value and/or a second value, the first value indicates that a group of time positions corresponding to the bit is a group of candidate time positions, and the second value indicates that a group of time positions corresponding to the bit is a group of time positions in which SSB transmission is not performed,

wherein each bit in the bitmap corresponds to a quasi co-location index, and each quasi co-location index corresponds to a group of time positions,

wherein when the computer program is executed by the processor, a following step is further implemented:

obtaining a mapping relationship between a random access channel occasion (RO) and a group of candidate time positions based on each group of candidate time positions in the at least one group of candidate time positions.

7. The terminal according to claim 6 , wherein if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.

8. The terminal according to claim 6 , wherein when the computer program is executed by the processor, a following step is further implemented:

performing, based on downlink transmission information, rate matching on the candidate time position indicated by the SSB transmission indication information.

9. The terminal according to claim 6 , wherein when the computer program is executed by the processor, a following step is further implemented:

for a physical downlink control channel (PDCCH) candidate, if at least one resource element (RE) of the PDCCH candidate overlaps a resource element of a candidate SSB, skipping monitoring the PDCCH candidate, wherein the candidate SSB is an SSB that may be transmitted in the candidate time position indicated by the SSB transmission indication information.

10. The terminal according to claim 6 , wherein when the computer program is executed by the processor, a following step is further implemented:

determining a slot used for physical uplink control channel (PUCCH) repetition transmission, wherein

the slot used for PUCCH repetition transmission comprises N consecutive flexible symbols starting from a first symbol, the N flexible symbols do not overlap the candidate time position indicated by the SSB transmission indication information, and N is a positive integer.

11. The method according to claim 1 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.

12. The method according to claim 1 , wherein

the mapping comprises at least one round of mappings, each round of mappings comprises X1 mappings of a single group of candidate time positions, and X1 is a quantity of SSBs that are in SSBs to be transmitted and that are not quasi co-located mutually.

13. The terminal according to claim 6 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.

14. The terminal according to claim 6 , wherein

the mapping comprises at least one round of mappings, each round of mappings comprises X1 mappings of a single group of candidate time positions, and X1 is a quantity of SSBs that are in SSBs to be transmitted and that are not quasi co-located mutually.

15. A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the steps of the SSB transmission indication method according to claim 1 .

16. The non-transitory computer-readable storage medium according to claim 15 , wherein if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.

17. The non-transitory computer-readable storage medium according to claim 15 , wherein the computer program is further used to be executed by the processor to:

perform, based on downlink transmission information, rate matching on the candidate time position indicated by the SSB transmission indication information.

18. The non-transitory computer-readable storage medium according to claim 15 , wherein the computer program is further used to be executed by the processor to:

for a physical downlink control channel (PDCCH) candidate, if at least one resource element (RE) of the PDCCH candidate overlaps a resource element of a candidate SSB, skip monitoring the PDCCH candidate, wherein the candidate SSB is an SSB that may be transmitted in the candidate time position indicated by the SSB transmission indication information.

19. The non-transitory computer-readable storage medium according to claim 15 , wherein the computer program is further used to be executed by the processor to:

determine a slot used for physical uplink control channel (PUCCH) repetition transmission, wherein

the slot used for PUCCH repetition transmission comprises N consecutive flexible symbols starting from a first symbol, the N flexible symbols do not overlap the candidate time position indicated by the SSB transmission indication information, and N is a positive integer.

20. The non-transitory computer-readable storage medium according to claim 15 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.