Information transmission method, base station and terminal

1. An information transmission method for a base station comprising:

selecting one subcarrier spacing from at least one preset subcarrier spacing for transmitting a synchronization signal and a physical broadcast channel according to service delay requirements;

configuring a transmitting time number of a beam when the base station uses the beam to transmit the synchronization signal and the physical broadcast channel, the transmitting time number being used to indicate a corresponding transmitting time position of the beam in a transmittable time zone for the synchronization signal and the physical broadcast channel, the transmittable time zone comprising at least one transmitting time position corresponding to at least one beam; and

sending information related to the transmitting time number to a terminal for the terminal to determine a subframe boundary and complete time domain synchronization according to the information related to the transmitting time number and the prestored transmittable time zone.

2. The method according to claim 1 , wherein the step of sending information related to the transmitting time number to the terminal further comprises:

configuring an amount of secondary synchronization signal sequence according to an amount of the beam,

mapping the transmitting time number with the secondary synchronization signal sequence to get a pre-stored mapping table, and

sending the secondary synchronization signal sequence to the terminal, to allow the terminal to determine the transmitting time number by looking-up the pre: stored mapping table.

3. The method according to claim 1 , wherein the step of sending information related to the transmitting time number to the terminal further comprises:

sending the transmitting time number as system information to the terminal through the physical broadcast channel.

4. The method according to claim 1 , wherein the step of sending information related to the transmitting time number to the terminal further comprises:

configuring a reference signal corresponding to the beam,

mapping the transmitting time number with the reference signal to get a mapping table, and

sending the reference signal to the terminal to allow the terminal to determine the transmitting time number by looking-up the prestored mapping table.

5. A synchronization method for a terminal comprising:

receiving information related to a transmitting time number of a beam sent from a base station when the base station uses the beam to transmit a synchronization signal and a physical broadcast channel, the transmitting time number being used to indicate a corresponding transmitting time position of the beam in a pre-stored transmittable time zone for the synchronization signal and the physical broadcast channel, the transmittable time zone comprising at least one transmitting time position corresponding to at least one beam; and

determining a subframe boundary and completing time domain synchronization according to the information related to the transmitting time number and the pre: stored transmittable time zone.

6. The method according to claim 5 , wherein the step of the terminal receiving information related to a transmitting time number of a beam sent from the base station further comprises:

receiving a secondary synchronization signal sequence sent from the base station, and determining the transmitting time number by looking-up a mapping table, based on the received secondary synchronization signal sequence in combination with the mapping table between a secondary synchronization signal sequence and a transmitting time number prestored in the terminal; or

receiving system information sent from the base station through the physical broadcast channel, and determining the transmitting time number from the system information; or

receiving a reference signal sent from the base station, and determining the transmitting time number by looking-up a mapping table, based on the received reference signal in combination with the mapping table between a reference signal and a transmitting time number prestored in the terminal, wherein the reference signal is configured by the base station and corresponds to the beam.

7. A base station comprising: a processor, a memory, a transceiver and a bus, wherein the processor, the memory and the transceiver are interconnected by the bus, the transceiver is used for transmitting information and data between the base station and a terminal, the memory is used for storing a set of program code, and the processor is used for calling the program code stored in the memory to execute:

selecting one subcarrier spacing from at least one preset subcarrier spacing for transmitting a synchronization signal and a physical broadcast channel according to service delay requirements;

configuring a transmitting time number of a beam when the base station uses the beam to transmit the synchronization signal and the physical broadcast channel, the transmitting time number being used to indicate a corresponding transmitting time position of the beam in a pre-stored transmittable time zone for the synchronization signal and the physical broadcast channel, and the transmittable time zone comprising at least one transmitting time position corresponding to at least one beam; and

sending information related to the transmitting time number to a terminal, for the terminal to determine a subframe boundary and complete time domain synchronization according to the information related to the transmitting time number and the pre-stored transmittable time zone.

8. The base station according to claim 7 , wherein the processor further calls the program code stored in the memory to execute:

configuring an amount of secondary synchronization signal sequence according to an amount of the beam, mapping the transmitting time number with the secondary synchronization signal sequence to get a pre-stored mapping table, and sending the secondary synchronization signal sequence to the terminal, to allow the terminal to determine the transmitting time number by looking-up the pre-stored mapping table.

9. The base station according to claim 7 , wherein the processor further calls the program code stored in the memory to execute:

sending the transmitting time number as system information to the terminal through the physical broadcast channel.

10. The base station according to claim 7 , wherein the processor further calls the program code stored in the memory to execute:

configuring a reference signal corresponding to the beam, mapping the transmitting time number with the reference signal to get a pre-stored mapping table, and sending the reference signal to the terminal, to allow the terminal to determine the transmitting time number by looking-up the pre: stored mapping table.

11. A terminal comprising: a processor, a memory, an interface circuit and a bus, wherein the processor, the memory and the interface circuit are interconnected by the bus, the memory is used for storing a set of program code, and the processor is used for calling the program code stored in the memory to execute:

receiving information related to a transmitting time number of a beam sent from a base station when the base station uses the beam to transmit a synchronization signal and a physical broadcast channel, the transmitting time number being used to indicate a corresponding transmitting time position of the beam in a pre-stored transmittable time zone for the synchronization signal and the physical broadcast channel, the transmittable time zone comprising at least one transmitting time position corresponding to at least one beam; and

determining a subframe boundary and complete time domain synchronization according to the information related to the transmitting time number and the pre: stored transmittable time zone.

12. The terminal according to claim 11 , wherein the processor further calls the program code stored in the memory to execute:

receiving a secondary synchronization signal sequence sent from the base station, and determining the transmitting time number by looking-up a mapping table, based on the received secondary synchronization signal sequence in combination with the mapping table between a secondary synchronization signal sequence and a transmitting time number prestored in the terminal; or

receiving system information sent from the base station through the physical broadcast channel, and determining the transmitting time number from the system information; or

receiving a reference signal sent from the base station, and determining the transmitting time number by looking-up a mapping table, based on the reference signal in combination with the mapping table between a reference signal and a transmitting time number prestored in the terminal, wherein the reference signal is configured by the base station and corresponds to the beam.