Reference signal transmission method and apparatus, network device, and user equipment

A reference signal transmission method, comprising:

• determining a time-frequency resource that is available for receiving data or sending data, wherein the time-frequency resource that is available for receiving data or sending data does not overlap with a time-frequency resource used for a first RS, and the first RS is sent by a first network device NE1 to which a first cell CELL1 belongs, to a second network device NE2 to which a second cell CELL2 belongs.

A communication apparatus, comprising a processor and a memory, wherein the memory is configured to store an instruction, and when the instruction is executed by the processor, the apparatus is configured to execute the following:

• sending, to which a first cell CELL1 belongs, a first reference signal RS based on first configuration information to a second network device NE2 to which a second cell CELL2 belongs, wherein the first configuration information comprises information used to indicate a time-frequency resource used by the NE1 for sending the first RS.

A communication apparatus, comprising a processor and a memory, wherein the memory is configured to store an instruction, and when the instruction is executed by the processor, the apparatus is configured to execute the following:

• determining a time-frequency resource that is available for receiving data or sending data, wherein the time-frequency resource that is available for receiving data or sending data does not overlap with a time-frequency resource used for a first RS, and the first RS is sent by a first network device NE1 to which a first cell CELL1 belongs, to a second network device NE2 to which a second cell CELL2 belongs.