Reference signal transmission method, apparatus, and system

A terminal, comprising:

• one or more non-transitory memories configured to store instructions;
• and
• one or more processors, coupled to the non-transitory one or more memories, and configured to execute the instructions to facilitate:
• determining resource location information of a phase tracking reference signal from a network device;
• and
• receiving the phase tracking reference signal on a resource based on the resource location information, a time-domain density of the phase tracking reference signal and a frequency-domain density of the phase tracking reference signal;
• wherein the time-domain density of the phase tracking reference signal is related to a bandwidth part and a modulation and coding scheme (MCS);
• wherein the frequency-domain density of the phase tracking reference signal is related to the bandwidth part and a scheduled bandwidth;
• wherein the bandwidth part comprises multiple consecutive physical resource blocks in the frequency domain;
• and
• wherein the bandwidth part corresponds to one or more subcarrier spacings.

A communication method, wherein the method comprises:

• configuring, by a network device based on a time-domain density of a phase tracking reference signal and a frequency-domain density of the phase tracking reference signal, a time-frequency resource of the phase tracking reference signal for a terminal;
• and
• sending, by the network device, the phase tracking reference signal to the terminal;
• wherein the time-domain density of the phase tracking reference signal is related to a bandwidth part and a modulation and coding scheme (MCS);
• wherein the frequency-domain density of the phase tracking reference signal is related to the bandwidth part and a scheduled bandwidth;
• wherein the bandwidth part comprises multiple consecutive physical resource blocks in the frequency domain;
• and
• wherein the bandwidth part corresponds to one or more subcarrier spacings.

A network device, comprising:

• one or more non-transitory memories configured to store instructions;
• and
• one or more processors, coupled to the one or more non-transitory memories, and configured to execute the instructions to facilitate:
• configuring, based on a time-domain density of a phase tracking reference signal and a frequency-domain density of the phase tracking reference signal, a time-frequency resource of the phase tracking reference signal for a terminal;
• and
• sending the phase tracking reference signal to the terminal;
• wherein the time-domain density of the phase tracking reference signal is related to a bandwidth part and a modulation and coding scheme (MCS);
• wherein the frequency-domain density of the phase tracking reference signal is related to the bandwidth part and a scheduled bandwidth;
• wherein the bandwidth part comprises multiple consecutive physical resource blocks in the frequency domain;
• and
• wherein the bandwidth part corresponds to one or more subcarrier spacings.