Method and device for performing positioning by means of beamformed signal in wireless communication system
The present disclosure is for performing positioning by means of a beamformed signal in a wireless communication system. An operation method by a terminal in a wireless communication system can comprise the steps of: transmitting first messages requesting transmission of a positioning reference signal (PRS) by means of a plurality of transmission beams; receiving from a second terminal a second message indicating at least one transmission beam among the plurality of transmission beams; transmitting a third message, comprising scheduling information for transmission of the PRS, to the second terminal by means of the transmission beam; and receiving the PRS from the second terminal on the basis of the scheduling information.
1 . A method of operating a first terminal in a wireless communication system, the method comprising:
transmitting first messages requesting to transmit a positioning reference signal (PRS);
receiving a second message related to the PRS;
transmitting a third message including scheduling information for transmitting the PRS using at least one transmit beam, indicated by the second message, among the plurality of transmit beams;
receiving PRSs;
measuring timing of the received PRSs; and
performing an operation for positioning based on the timings,
wherein the first message is transmitted by using a plurality of transmit beams, and
wherein at least one PRS of the PRSs is transmitted at a second terminal based on the scheduling information in the third message.
2 . The method of claim 1 , wherein the first messages include information indicating that transmission of the PRS is requested or is transmitted through a resource pool corresponding to transmission of the PRS.
3 . The method of claim 1 , wherein the first messages include information related to a resource for transmitting the second message.
4 . The method of claim 3 , wherein the information related to the resource is differently set according to a transmit beam used to transmit the first messages.
5 . The method of claim 1 , wherein the second message includes information indicating the at least one transmit beam or is transmitted through a resource pool corresponding to the at least one transmit beam.
6 . The method of claim 1 , wherein the second message includes information related to a resource for transmitting the third message.
7 . The method of claim 1 , wherein the third message is repeatedly transmitted using a transmit beam indicated by the second message.
8 . The method of claim 1 , wherein the PRS is received using a receive beam corresponding to a transmit beam indicated by the second message.
9 . The method of claim 1 , further comprising:
receiving location information of the second terminal or location information of a fixed reference that the second terminal has.
10 . A first terminal in a wireless communication system, the first terminal comprising:
a transceiver; and
a processor coupled to the transceiver and configured to:
transmit first messages requesting to transmit a positioning reference signal (PRS);
receive a second message related to the PRS;
transmit a third message including scheduling information for transmitting the PRS using at least one transmit beam, indicated by the second message, among the plurality of transmit beams; and
receive PRSs;
measuring timing of the received PRSs; and
performing an operation for positioning based on the timings,
wherein the first message is transmitted by using a plurality of transmit beams, and
wherein at least one PRS of the PRSs is transmitted at a second terminal based on the scheduling information in the third message.
11 . The first terminal of claim 10 , wherein the first messages include information indicating that transmission of the PRS is requested or is transmitted through a resource pool corresponding to transmission of the PRS.
12 . The first terminal of claim 10 , wherein the first messages include information related to a resource for transmitting the second message.
13 . The first terminal of claim 12 , wherein the information related to the resource is differently set according to a transmit beam used to transmit the first messages.
14 . The first terminal of claim 10 , wherein the second message includes information indicating the at least one transmit beam or is transmitted through a resource pool corresponding to the at least one transmit beam.
15 . The first terminal of claim 10 , wherein the second message includes information related to a resource for transmitting the third message.
16 . The first terminal of claim 10 , wherein the third message is repeatedly transmitted using a transmit beam indicated by the second message.
17 . The first terminal of claim 10 , wherein the PRS is received using a receive beam corresponding to a transmit beam indicated by the second message.
18 . The first terminal of claim 10 , further comprising:
receiving location information of the second terminal or location information of a fixed reference that the second terminal has.
19 . A device comprising at least one memory and at least one processor functionally connected to the at least one memory, wherein the at least one processor controls the device to:
transmit first messages requesting to transmit a positioning reference signal (PRS);
receive a second message related to the PRS;
transmit a third message including scheduling information for transmitting the PRS using at least one transmit beam, indicated by the second message, among the plurality of transmit beams; and
receive PRSs;
measuring timing of the received PRSs; and
performing an operation for positioning based on the timings,
wherein the first message is transmitted by using a plurality of transmit beams, and
wherein at least one PRS of the PRSs is transmitted at a terminal based on the scheduling information in the third message.