Methods and apparatuses for transmitting and receiving synchronization signal, and transmission system

A method for receiving a synchronization signal, comprising:

• obtaining, by a terminal, a plurality of sets of system parameters, wherein each set of the system parameters comprises frequency information of a carrier and a frame structure parameter,
• wherein, for each set of system parameters, frequency information of the carrier has a predefined correspondence with a frame structure parameter;
• and
• receiving, by the terminal, the synchronization signal of a structure from a first predetermined structure or a second predetermined structure,
• wherein the structure is according to a set of system parameters from the plurality of sets of system parameters,
• wherein the first predetermined structure and the second predetermined structure have a same time domain position,
• wherein a time domain position of the first predetermined structure and the second predetermined structure is the same for different frame structure parameters, and
• wherein system parameters of common channels and common signals are same as the set of system parameters that are used to construct the synchronization signal.

A base station, comprising a processor configured to:

• determine a plurality of sets of system parameters, wherein each set of the system parameters comprises frequency information of a carrier and a frame structure parameter,
• wherein, for each set of system parameters, frequency information of the carrier has a predefined correspondence with a frame structure parameter;
• construct a synchronization signal of a structure from a first predetermined structure or a second predetermined structure,
• wherein the structure is according to a set of system parameters from the plurality of sets of system parameters,
• wherein the first predetermined structure and the second predetermined structure have a same time domain position,
• wherein a time domain position of the first predetermined structure and the second predetermined structure is the same for different frame structure parameters, and
• wherein system parameters of common channels and common signals are same as the set of system parameters that are used to construct the synchronization signal;
• and
• transmit the synchronization signal to a terminal.

A terminal, comprising a processor configured to:

• obtain a plurality of sets of system parameters, wherein each set of the system parameters comprises frequency information of a carrier and a frame structure parameter,
• wherein, for each set of system parameters, frequency information of the carrier has a predefined correspondence with a frame structure parameter;
• and
• receive a synchronization signal of a structure from a first predetermined structure or a second predetermined structure,
• wherein the structure is according to a set of system parameters from the plurality of sets of system parameters,
• wherein the first predetermined structure and the second predetermined structure have a same time domain position,
• wherein a time domain position of the first predetermined structure and the second predetermined structure is the same for different frame structure parameters, and
• wherein system parameters of common channels and common signals are same as the set of system parameters that are used to construct the synchronization signal.