Signal transmission method and apparatus, signal reception method and apparatus and communication system

A signal reception apparatus, provided in a terminal equipment, the apparatus comprising:

• a memory that stores a plurality of instructions;
• and
• a processor coupled to the memory and configured to execute the instructions to:
• receive index transmitted by a network device, the index indicating a first time-frequency resource in integer number of first time-frequency resources used for transmitting synchronization signal/physical broadcast channel (PBCH) block (SSB) in a time interval, wherein one first time-frequency resource is used for transmitting one SSB and the integer number of first time-frequency resources includes at least two first time-frequency resources used for transmitting SSBs identified by a same SSB index, the first time-frequency resource is one of the at least two first time-frequency resources and the index of the first time-frequency resource is carried by a DMRS sequence and/or a PBCH payload in an SSB transmitted using the first time;
• and
• obtain time synchronization according to the index.

A communication system, comprising:

• a network device;
• and
• a terminal equipment;
• wherein, the network device comprises a transmission apparatus including a transmitter configured to transmit index of a first time-frequency resource in integer number of first time-frequency resources used for transmitting synchronization signal/physical broadcast channel (PBCH) block (SSB) in a time interval, wherein one first time-frequency resource is used for transmitting one SSB and the integer number of first time-frequency resources includes at least two first time-frequency resources used for transmitting SSBs identified by a same SSB index, the first time-frequency resource is one of the at least two first time-frequency resources and the index of the first time-frequency resource is carried by a DMRS sequence and/or a PBCH payload in an SSB transmitted using the first time-frequency resource, and
• the terminal equipment comprises a reception apparatus including
• a memory that stores a plurality of instructions;
• and
• a processor coupled to the memory and configured to execute the instructions to:
• receive index transmitted by a network device, the index indicating a first time-frequency resource in integer number of first time-frequency resources used for transmitting synchronization signal/physical broadcast channel (PBCH) block (SSB) in a tire interval, wherein one first time-frequency resource is used for transmitting one SSB and the integer number of first time-frequency resources includes at least two first time-frequency resources used for transmitting SSBs identified by a same SSB index, the first time-frequency resource is one of the at least two first time-frequency resources and the index of the first time-frequency resource is carried by a DMRS sequence and/or a PBCH payload in an SSB transmitted using the first time-frequency resource;
• and
• obtain time synchronization according to the index.