Method and device for transmitting synchronization indication information

1. A method for transmitting synchronization indication information, applied to a base station side, comprising:

determining an actual sending position of a group of synchronization signal/physical broadcast channel (SS/PBCH) blocks (SSBs);

generating actual sending position indication information according to the actual sending position; wherein the actual sending position indication information comprises a first indication field, a second indication field and a third indication field; the first indication field and the second indication field jointly indicate the actual sending position of the group of SSBs, and the third indication field indicates whether a present SSB in the group of SSBs corresponds to the first indication field or the second indication field; and

transmitting the SSBs at the actual sending position, and transmitting the actual sending position indication information through remaining minimum system information (RMSI),

wherein at least one of the following applies:

the actual sending position comprises an offset position relative to a preferred transmission position configured by system, and a position of the second indication field is effective; or

the actual sending position indication information further comprises a fourth indication field, which s a number of repetitions of an SSB in the group of SSBs.

2. The method of claim 1 , wherein the third indication field occupies 1 bit.

3. The method of claim 1 , wherein default indication information of the present SSB is in the first indication field and the second indication field.

4. The method of claim 1 , wherein the first indication field and the second indication field occupy at most 16 bits.

5. A method for transmitting synchronization indication information, applied to user equipment (UE) side, comprising:

receiving synchronization signal/physical broadcast channel (SS/PBCH) blocks (SSBs) and actual sending position indication information transmitted through remaining minimum system information (RMSI); wherein the actual sending position indication information comprises a first indication field, a second indication field and a third indication field; the first indication field and the second indication field jointly indicate an actual sending position of a group of SSBs, and the third indication field indicates whether a presently-received SSB in the group of SSBs corresponds to the first indication field or the second indication field; and

performing synchronization processing according to the SSBs and the actual sending position indication information,

wherein at least one of the following applies:

the actual sending position comprises an offset position relative to a preferred transmission position configured by a system, and a position of the second indication field is effective; or

the actual sending position indication information further comprises a fourth indication field, which indicates a number of repetitions of an SSB in the group of SSBs.

6. The method of claim 5 , wherein the third indication field occupies 1 bit.

7. The method of claim 5 , wherein default indication information of the present SSB is in the first indication field and the second indication field;

wherein the performing the synchronization processing according to the SSBs and the actual sending position indication information comprises:

determining a default position of the SSB in the first indication field and the second indication field according to a serial number of the SSB, and supplementing the default position; and

performing the synchronization processing according to the SSBs and the supplemented actual sending position indication information.

8. The method of claim 5 , wherein the first indication field and the second indication field occupy at most 16 bits.

9. The method of claim 5 , wherein

the performing the synchronization processing according to the SSBs and the actual sending position indication information comprises:

combining repeated SSBs with identical serial numbers according to the actual sending position indication information; and

performing the synchronization processing according to the SSBs after combination and the actual sending position indication information.

10. A device for transmitting synchronization indication information, applied to a base station side, comprising:

a processor; and

memory for storing instructions executable by the processor;

wherein the processor is configured to:

determine an actual sending position of a group of synchronization signal/physical broadcast channel (SS/PBCH) blocks (SSBs);

generate actual sending position indication information according to the actual sending position; wherein the actual sending position indication information comprises a first indication field, a second indication field and a third indication field; the first indication field and the second indication field jointly indicate the actual sending position of the group of SSBs, and the third indication field indicates whether a present SSB in the group of SSBs corresponds to the first indication field or the second indication field; and

transmit the SSBs at the actual sending position, and transmit the actual sending position indication information through remaining minimum system information (RMSI),

wherein at least one of the following applies:

the actual sending position comprises offset position relative to a referred transmission position configured by a system, and a position of the second indication field is effective; or

the actual sending position indication information further comprises a fourth indication field, which indicates a number of repetitions of an SSB in the group of SSBs.

11. The device of claim 10 , wherein the third indication field occupies 1 bit.

12. The device of claim 10 , wherein default indication information of the present SSB is in the first indication field and the second indication field.

13. The device of claim 10 , wherein the first indication field and the second indication field occupy at most 16 bits.

14. A device for transmitting synchronization indication information implementing operations of the method for transmitting synchronization indication information of claim 5 , applied to user equipment (UE) side, comprising:

a processor; and

memory for storing instructions executable by the processor;

wherein the processor is configured to:

receive synchronization signal/physical broadcast channel (SS/PBCH) blocks (SSBs) and actual sending position indication information transmitted through remaining minimum system information (RMSI); wherein the actual sending position indication information comprises a first indication field, a second indication field and a third indication field; the first indication field and the second indication field jointly indicate an actual sending position of a group of SSBs, and the third indication field indicates whether a presently-received SSB in the group of SSBs corresponds to the first indication field or the second indication field; and

perform synchronization processing according to the SSBs and the actual sending position indication information,

wherein at least one of the following applies:

the actual sending position comprises an offset position relative to a preferred transmission position configured by a system, and a position of the second indication field is effective; or

the actual sending position indication information further comprises a fourth indication field, which indicates a number of repetitions of an SSB in the group of SSBs.

15. The device of claim 14 , wherein default indication information of the present SSB is in the first indication field and the second indication field;

wherein the processor is further configured to:

determine a default position of the SSB in the first indication field and the second indication field according to a serial number of the SSB, and supplement the default position; and

perform the synchronization processing according to the SSBs and the supplemented actual sending position indication information.

16. The device of claim 14 , wherein the third indication field occupies one bit.

17. The device of claim 14 wherein the first indication field and the second indication field occupy at most sixteen bits.

18. The device of claim 14 , wherein the processor is further configured to:

combine repeated SSBs with identical serial numbers according to the actual sending position indication information; and

perform the synchronization processing according to the SSBs after combination and the actual sending position indication information.