Method and device for transmitting S-PRS in NR V2X

A first device, comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the first device to perform operations comprising:
• determining a transmission parameter related to a positioning reference signal (PRS), based on information obtained by the first device;
• and
• transmitting the PRS based on the transmission parameter,
• wherein the information obtained by the first device includes at least one of a movement speed of the first device, a distance between the first device and a second device, a congestion level of a channel related to the PRS, a noise of the channel related to the PRS, an interference level of the channel related to the PRS, an accuracy required for positioning related to the PRS, a priority of the positioning related to the PRS, or a power of a signal related to the PRS,
• wherein the transmission parameter includes at least one of a first center frequency related to the PRS, a distribution form related to the transmission of the PRS, whether to perform a muting operation preventing a transmission of an PRS by the second device, or a first transmit power related to the PRS, and
• wherein a first transmission number related to the PRS is greater than a second transmission number related to a movement speed of the first device or the second device which is less than a first threshold value, based on a movement speed of the first device or the second device which is equal to or greater than the first threshold value.

A processing device configured to control a first device, comprising:

• at least one processor;
• and
• at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the first device to perform operations comprising:
• determining a transmission parameter related to a positioning reference signal (PRS), based on information obtained by the first device;
• and
• transmitting the PRS based on the transmission parameter,
• wherein the information obtained by the first device includes at least one of a movement speed of the first device, a distance between the first device and a second device, a congestion level of a channel related to the PRS, a noise of the channel related to the PRS, an interference level of the channel related to the PRS, an accuracy required for positioning related to the PRS, a priority of the positioning related to the PRS, or a power of a signal related to the PRS,
• wherein the transmission parameter includes at least one of a first center frequency related to the PRS, a distribution form related to the transmission of the PRS, whether to perform a muting operation preventing a transmission of an PRS by the second device, or a first transmit power related to the PRS, and
• wherein a first transmission number related to the PRS is greater than a second transmission number related to a movement speed of the first device or the second device which is less than a first threshold value, based on a movement speed of the first device or the second device which is equal to or greater than the first threshold value.