Reference signal sending method and communications device

A communications device, wherein the communications device comprises:

• a processor, configured to:
• generate a tracking reference signal, wherein the tracking reference signal corresponds to a DMRS port that is used by the communications device when the communications device sends data, and the tracking reference signal is used to track a phase change experienced by a tracking reference signal when the tracking reference signal is transmitted on a channel corresponding to the DMRS port;
• and
• map the tracking reference signal to a time-frequency resource that is used by the communications device when the communications device sends the data through the DMRS port, wherein the tracking reference signal is mapped to at least two modulation symbols on a same frequency resource in one transmission slot, wherein the same frequency resource comprises a subcarrier, and the subcarrier is determined based on an offset value that is calculated based on an identifier (ID) of the communications device;
• and
• a transceiver, configured to send the tracking reference signal mapped to the time-frequency resource.

A non-transitory computer readable storage medium, wherein the computer readable storage medium stores a computer program, and when the computer program is run on a computer, the computer performs a method for sending a reference signal, the method comprising:

• generating a tracking reference signal, wherein the tracking reference signal corresponds to a DMRS port that is used by the computer when the computer sends data, and the tracking reference signal is used to track a phase change experienced by a tracking reference signal when the tracking reference signal is transmitted on a channel corresponding to the DMRS port;
• mapping the tracking reference signal to a time-frequency resource that is used by the computer when the computer sends the data through the DMRS port, wherein the tracking reference signal is mapped to at least two modulation symbols on a same frequency resource in one transmission slot, wherein the same frequency resource comprises a subcarrier, and the subcarrier is determined based on an offset value that is calculated based on an identifier (ID) of a user equipment;
• and
• sending the tracking reference signal mapped to the time-frequency resource.

A communications apparatus, comprising a processor, configured to invoke a computer program from a memory and run the computer program so that a communications device on which the communications apparatus is installed performs a method for sending a reference signal, the method comprising:

• generating a tracking reference signal, wherein the tracking reference signal corresponds to a DMRS port that is used by the communications device when the communications device sends data, and the tracking reference signal is used to track a phase change experienced by a tracking reference signal when the tracking reference signal is transmitted on a channel corresponding to the DMRS port;
• mapping the tracking reference signal to a time-frequency resource that is used by the communications device when the communications device sends the data through the DMRS port, wherein the tracking reference signal is mapped to at least two modulation symbols on a same frequency resource in one transmission slot, wherein the same frequency resource comprises a subcarrier, and the subcarrier is determined based on an offset value that is calculated based on an identifier (ID) of a user equipment;
• and
• sending the tracking reference signal mapped to the time-frequency resource.