Synchronization signal block transmission method, device and storage medium

1. A method for transmitting a synchronization signal block, comprising:

receiving, by a first device comprising n antenna panels and through k antenna panels of the n antenna panels, synchronization signal blocks sent by at least one second device through at least one antenna panel, wherein n is an integer greater than or equal to 2, and k is a positive integer not greater than n; and

determining a second target device that performs synchronization from the at least one second device according to signal strength of all synchronization signal blocks received by the k antenna panels,

wherein synchronization signal blocks, sent by at least one antenna panel of a same second device at same symbol positions in a time window occurring periodically for transmission of synchronization signal blocks, comprise same synchronization signal block identifiers and same synchronization signal block contents; and

synchronization signal blocks, sent by at least one antenna panel of a same second device at different symbol positions in the time window occurring periodically for transmission of synchronization signal blocks, comprise different synchronization signal block identifiers.

2. The method of claim 1 , wherein determining the second target device that performs synchronization from the at least one second device according to the signal strength of all synchronization signal blocks received by the k antenna panels comprises:

acquiring a target synchronization signal block from the synchronization signal blocks received by the k antenna panels, the target synchronization signal block referring to a synchronization signal block with strongest signal strength among the synchronization signal blocks received by the k antenna panels; and

determining a second device that sends the target synchronization signal block as the second target device.

3. The method of claim 1 , wherein determining the second target device that performs synchronization from the at least one second device according to signal strength of all synchronization signal blocks received by the k antenna panels comprises:

acquiring an average value of signal strength of M synchronization signal blocks with strongest signal strength received by the k antenna panels and sent by each second device of the at least one second device, wherein M is an integer greater than or equal to 2; and

determining a second device corresponding to a highest average value as the second target device.

4. The method of claim 3 , wherein acquiring the average value of signal strength of M synchronization signal blocks with the strongest signal strength received by the k antenna panels and sent by each second device of the at least one second device comprises:

acquiring a sum of signal strength of the M synchronization signal blocks with the strongest signal strength received by the k antenna panels and sent by a target device, the target device referring to any device of the at least one second device; and

dividing the sum of the signal strength by M to obtain the average value of the signal strength of the M synchronization signal blocks with the strongest signal strength sent by the target device.

5. The method of claim 3 , wherein acquiring the average value of signal strength of M synchronization signal blocks with the strongest signal received by the k antenna panels and sent by each second device of the at least one second device comprises:

acquiring signal strength of the M synchronization signal blocks with the strongest signal strength received by the k antenna panels and sent by a target device;

acquiring weights of the M synchronization signal blocks;

performing weighted averaging on the signal strength of the M synchronization signal blocks according to the weights of the M synchronization signal blocks to obtain the average value of the signal strength of the M synchronization signal blocks.

6. The method of claim 1 , wherein

Demodulation Reference Signal (DMRS) sequences of synchronization signal blocks, sent at same symbol positions in a time window occurring periodically for transmission of synchronization signal blocks, are the same, and the synchronization signal blocks at the same symbol positions are received using a same receiving beam.

7. A method for transmitting a synchronization signal block, comprising:

respectively sending, by a second device comprising m antenna panels, synchronization signal blocks through j antenna panels of the m antenna panels, wherein m is an integer greater than or equal to 2, and wherein 2≤j≤m, and j is an integer,

wherein synchronization signal blocks, sent by the j antenna panel at same symbol positions in a time window occurring periodically for transmission of synchronization signal blocks, comprise same synchronization signal block identifiers and same synchronization signal block contents; and

synchronization signal blocks, sent by the j antenna panels at different symbol positions in the time window occurring periodically for transmission of synchronization signal blocks, comprise different synchronization signal block identifiers.

8. The method of claim 7 , wherein respectively sending the synchronization signal blocks through j antenna panels of the m antenna panels comprises:

in a first time period, respectively sending the synchronization signal blocks through a first part of antenna panels in the j antenna panels, the first part of antenna panels referring to at least one antenna panel of the j antenna panels; and

in a second time period, respectively sending the synchronization signal blocks through a second part of antenna panels in the j antenna panels, the second part of antenna panels referring to at least one antenna panel of the j antenna panels, except for the first part of antenna panels.

9. The method of claim 7 , further comprising:

performing, through the j antenna panels in a listen before talk (LBT) mode, channel detection on frequency domain resources used by the second device for sending the synchronization signal blocks; and in response to determining that a channel detection result of each of the j antenna panels indicates an idle state, respectively sending the synchronization signal blocks through the j antenna panels of the m antenna panels.

10. The method of claim 9 , wherein

the frequency domain resources used by the second device for sending the synchronization signal blocks are unlicensed spectrum;

or,

the frequency domain resources used by the second device for sending the synchronization signal blocks are frequency domain resources shared by multiple second devices.

11. The method of claim 7 , wherein

a number of antenna panels in a sending state at a same time among the m antenna panels is L, and a maximum sending power of each antenna panel in the L antenna panels is 1/L of a maximum sending power of the second device, wherein L is a positive integer less than or equal to m; or

a sum of sending powers of each of the L antenna panels is less than or equal to the maximum sending power of the second device.

12. An apparatus for transmitting a synchronization signal block for implementing the method of claim 7 , comprising:

a transmitter, configured to respectively send synchronization signal blocks through j antenna panels of m antenna panels comprised in a second device, wherein 2≤j≤m, m is an integer greater than or equal to 2, and j is an integer.

13. An apparatus for transmitting a synchronization signal block, comprising:

a receiver, configured to receive, through k antenna panels of n antenna panels comprised in a first device, synchronization signal blocks sent by at least one second device through at least one antenna panel, wherein n is an integer greater than or equal to 2, and k is a positive integer not greater than n; and

a processor, configured to determine a second target device for performing synchronization from the at least one second device according to signal strength of all synchronization signal blocks received by the k antenna panels,

wherein synchronization signal blocks, sent by at least one antenna panel of a same second device at same symbol positions in a time window occurring periodically for transmission of synchronization signal blocks, comprise same synchronization signal block identifiers and same synchronization signal block contents; and

synchronization signal blocks, sent by at least one antenna panel of a same second device at different symbol positions in the time window occurring periodically for transmission of synchronization signal blocks, comprise different synchronization signal block identifiers.

14. The apparatus of claim 13 , wherein the processor is further configured to:

acquire a target synchronization signal block among the synchronization signal blocks received by the k antenna panels, the target synchronization signal block referring to a synchronization signal block with strongest signal strength among the synchronization signal blocks received by the k antenna panels; and

determine a second device that sends the target synchronization signal block as the second target device.

15. The apparatus of claim 13 , wherein the processor is further configured to:

acquire an average value of signal strength of M synchronization signal blocks with strongest signal strength received by the k antenna panels and sent by each second device of the at least one second device, where M is an integer greater than or equal to 2; and

determine a second device corresponding to a highest average value as the second target device.

16. The apparatus of claim 15 , wherein the processor is further configured to:

acquire a sum of the signal strength of the M synchronization signal blocks with the strongest signal strength received by the k antenna panels and sent by a target device, the target device referring to any device of the at least one second device; and

divide the sum of the signal strength by M to obtain the average value of the signal strength of the M synchronization signal blocks with the strongest signal strength sent by the target device.

17. The apparatus of claim 15 , wherein the processor is further configured to:

acquire the signal strength of the M synchronization signal blocks with the strongest signal strength received by the k antenna panels and sent by a target device;

acquire weights of the M synchronization signal blocks; and

perform weighted averaging on the signal strength of the M synchronization signal blocks according to the weights of the M synchronization signal blocks to obtain the average value of the signal strength of the M synchronization signal blocks.

18. The apparatus of claim 13 ,

wherein Demodulation Reference Signal (DMRS) sequences of synchronization signal blocks sent at same symbol positions in a time window occurring periodically for transmission of synchronization signal blocks, are the same, and the synchronization signal blocks at the same symbol positions are received using a same receiving beam.