Signal transmission method and device, signal reception method and device, and terminal
View Patent ↗Signal transmission method and device, signal reception method and device and a terminal are provided. The signal transmission method includes: transmitting P synchronous signal blocks SSBs in a synchronous period, wherein the P SSBs are divided into Q groups, any of the Q groups includes at least one SSB, both P and Q are positive integers greater than or equal to 1; when a synchronization period includes at least two SSBs, a time-domain location of at least one of the SSBs is preconfigured or carried through a physical broadcast channel PBCH.
1. A signal transmission method performed by a terminal, comprising:
transmitting P synchronous signal blocks SSBs in a synchronous period,
wherein the P SSBs are divided into Q groups, any of the Q groups comprises at least one SSB, both P and Q are positive integers greater than or equal to 1;
when a synchronization period comprises at least two SSBs, a time-domain location of at least one of the SSBs is preconfigured or carried through a physical broadcast channel PBCH,
wherein when the time-domain location of the at least one of the SSBs is preconfigured, preconfigured information of the time-domain location comprises at least one of the following parameters:
time intervals between two adjacent SSBs in a same group;
time intervals between all SSBs in a same group and a first SSB in the group; or
time intervals between all SSBs and a first SSB in a synchronization period;
wherein the time interval is Ti slots or Ti milliseconds, Ti is greater than or equal to 0.
2. The signal transmission method according to claim 1 , wherein time intervals between two adjacent groups are same.
3. The signal transmission method according to claim 1 , wherein at least one of following parameters are preconfigured:
a quantity of SSBs contained within each group;
a value of P;
a value of Q.
4. The signal transmission method according to claim 1 , wherein at least one of following parameters is determined according to at least one of a subcarrier spacing SCS used by the terminal, a frequency range, and information carried by the PBCH:
a time-domain location of a SSB;
a quantity P of SSBs sent in a synchronization period;
a time interval between two groups;
a quantity of SSBs contained within each group;
a quantity Q of groups contained within a synchronization period.
5. The signal transmission method according to claim 4 , wherein the information carried by the PBCH comprises:
information carried by a Demodulation Reference Signal DMRS corresponding to the PBCH, or information carried by a payload of the PBCH.
6. The signal transmission method according to claim 1 , wherein the SSB is a sidelink synchronous signal block S-SSB, the PBCH is a physical sidelink broadcast channel PSBCH, the synchronous period is a sidelink synchronous period.
7. A signal reception method performed by a terminal, comprising:
receiving P synchronous signal blocks SSBs in a synchronous period,
wherein the P SSBs are divided into Q groups, any of the Q groups comprises at least one SSB, both P and Q are positive integers greater than or equal to 1;
when a synchronization period comprises at least two SSBs, a time-domain location of at least one of the SSBs is preconfigured or carried through a physical broadcast channel PBCH,
wherein when the time-domain location of the at least one of the SSBs is preconfigured, preconfigured information of the time-domain location comprises at least one of the following parameters:
time intervals between two adjacent SSBs in a same group;
time intervals between all SSBs in a same group and a first SSB in the group; or
time intervals between all SSBs and a first SSB in a synchronization period;
wherein the time interval is Ti slots or Ti milliseconds, Ti is greater than or equal to 0.
8. The signal reception method according to claim 7 , wherein time intervals between two adjacent groups are same.
9. The signal reception method according to claim 7 , wherein at least one of following parameters are preconfigured:
a quantity of SSBs contained within each group;
a value of P;
a value of Q.
10. The signal reception method according to claim 7 , wherein at least one of following parameters is determined according to at least one of a subcarrier spacing SCS used by the terminal, a frequency range, and information carried by the PBCH:
a time-domain location of a SSB;
a quantity P of SSBs sent in a synchronization period;
a time interval between two groups;
a quantity of SSBs contained within each group;
a quantity Q of groups contained within a synchronization period.
11. The signal reception method according to claim 10 , wherein the information carried by the PBCH comprises:
information carried by a Demodulation Reference Signal DMRS corresponding to the PBCH, or information carried by a payload of the PBCH.
12. The signal reception method according to claim 7 , wherein the SSB is a sidelink synchronous signal block S-SSB, the PBCH is a physical sidelink broadcast channel PSBCH, the synchronous period is a sidelink synchronous period.
13. A terminal, comprising:
a transceiver, a processor, a memory storing a computer program executable by the processor;
wherein, when the computer program is executed by the processor, the processor implements following:
transmitting P synchronous signal blocks SSBs in a synchronous period,
wherein the P SSBs are divided into Q groups, any of the Q groups comprises at least one SSB, both P and Q are positive integers greater than or equal to 1;
when a synchronization period comprises at least two SSBs, a time-domain location of at least one of the SSBs is preconfigured or carried through a physical broadcast channel PBCH,
wherein when the time-domain location of the at least one of the SSBs is preconfigured, preconfigured information of the time-domain location comprises at least one of the following parameters:
time intervals between two adjacent SSBs in a same group;
time intervals between all SSBs in a same group and a first SSB in the group; or
time intervals between all SSBs and a first SSB in a synchronization period;
wherein the time interval is Ti slots or Ti milliseconds, Ti is greater than or equal to 0.
14. The terminal according to claim 13 , wherein, the SSB is a sidelink synchronous signal block S-SSB, the PBCH is a physical sidelink broadcast channel PSBCH, the synchronous period is a sidelink synchronous period.
15. A terminal, comprising:
a transceiver, a processor, a memory storing a computer program executable by the processor;
wherein, when the computer program is executed by the processor, the processor implements steps of the signal reception method according to claim 7 .
16. The terminal according to claim 15 , wherein,
at least one of following parameters are preconfigured:
a quantity of SSBs contained within each group;
a value of P;
a value of Q;
or,
at least one of following parameters is determined according to at least one of a subcarrier spacing SCS used by the terminal, a frequency range, and information carried by the PBCH:
a time-domain location of a SSB;
a quantity P of SSBs sent in a synchronization period;
a time interval between two groups;
a quantity of SSBs contained within each group;
a quantity Q of groups contained within a synchronization period.
17. The terminal according to claim 15 , wherein, the SSB is a sidelink synchronous signal block S-SSB, the PBCH is a physical sidelink broadcast channel PSBCH, the synchronous period is a sidelink synchronous period.