Method and device for transmitting positioning reference signal

A method for transmitting a positioning reference signal (PRS), comprising:

• determining, by a base station, a muted and/or an unmuted PRS resource on a time-frequency resource for sending the PRS according to PRS muting configuration information and the time-frequency resource for sending the PRS;
• wherein the time-frequency resource for sending the PRS is determined according to configuration information of the PRS;
• the configuration information of the PRS comprises PRS frequency domain resource information and time domain configuration information;
• and the PRS frequency domain resource information comprises PRS resource element (RE) frequency shift information;
• wherein the PRS RE frequency shift information is correlated with a PRS orthogonal frequency division multiplexing (OFDM) symbol index value calculated from a PRS occasion;
• wherein the time domain configuration information is used for indicating a starting position of the PRS in a slot, the PRS occupies N continuous symbols in a slot, and N is one of 1, 2, 3, 4, 6 or 12;
• and
• sending, by the base station, a mapped PRS on a PRS resource determined to be unmuted;
• wherein the method further comprises:
• sending, by the base station, configuration information of a subcarrier spacing of the PRS,
• wherein the subcarrier spacing of the PRS is same with or different from subcarrier spacings of other signals for data communication;
• wherein the subcarrier spacing of the PRS comprises:
• a subcarrier spacing corresponding to a first frequency range FR1 or a subcarrier spacing corresponding to a second frequency range FR2;
• the subcarrier spacing corresponding to the FR1 is one of 15 kHZ, 30 kHz or 60 kHz, and
• the subcarrier spacing corresponding to the FR2 is one of 60 kHZ or 120 kHz;
• wherein the method further comprises:
• sending, by the base station, configuration information of a transmission bandwidth of the PRS.