Method for transmitting and receiving signal in wireless communication system and apparatus supporting same
On-demand downlink positioning (DL PRS) procedure in a wireless communication system, in which a terminal may transmit request information including information regarding a number of DL PRS resources, information regarding a DL PRS resource bandwidth, and information regarding a DL PRS resource repetition, receive DL PRS configuration information, and receive one or more DL PRSs based on the DL PRS configuration information.
1 . A method performed by a terminal, the method comprising:
transmitting a first signal related to request information including information regarding a number of downlink (DL) positioning reference signal (PRS) resources, information regarding a DL PRS resource bandwidth, and information regarding a DL PRS resource repetition;
receiving a second signal related to DL PRS configuration information; and
receiving one or more DL PRSs based on the second signal related to the DL PRS configuration information,
wherein the terminal is configured with (i) a first physical random access channel (PRACH) preamble related to an on-demand DL PRS request, (ii) a second PRACH preamble related to an on-demand sounding reference signal (SRS) request, (iii) a third PRACH preamble related to both the on-demand DL PRS request and the on-demand SRS request, and
wherein the first signal is transmitted based on the first PRACH preamble or the third PRACH preamble.
2 . The method of claim 1 , further comprising:
transmitting information related to one or more measurements for positioning based on the one or more DL PRSs,
wherein the request information further includes information for requesting a resource for transmission of information related to the one or more measurements.
3 . The method of claim 1 , wherein the request information comprises:
a request related to one or more transmission beam directions of the one or more DL PRSs.
4 . The method of claim 1 , wherein the request information further includes information for requesting cancellation of one or more DL PRS resources after a preset time,
the method further comprising:
in response to the information for requesting the cancellation, receiving information indicating canceling the one or more of the one or more DL PRS resources after the preset time based on downlink control information (DCI) or a medium access control (MAC) control element (CE) signal.
5 . A terminal comprising:
a transceiver; and
one or more processors coupled to the transceiver,
wherein the one or more processors are configured to:
transmit a first signal related to request information including information regarding a number of downlink (DL) positioning reference signal (PRS) resources, information regarding a DL PRS resource bandwidth, and information regarding a DL PRS resource repetition;
receive a second signal related to DL PRS configuration information; and
receive one or more DL PRSs based on the second signal related to the DL PRS configuration information,
wherein the terminal is configured with (i) a first physical random access channel (PRACH) preamble related to an on-demand DL PRS request, (ii) a second PRACH preamble related to an on-demand sounding reference signal (SRS) request, (iii) a third PRACH preamble related to both the on-demand DL PRS request and the on-demand SRS request, and
wherein the first signal is transmitted based on the first PRACH preamble or the third PRACH preamble.
6 . The terminal of claim 5 , wherein the one or more processors are configured to:
transmit information related to one or more measurements for positioning based on the one or more DL PRSs,
wherein the request information further includes information for requesting a resource for transmission of information related to the one or more measurements.
7 . The terminal of claim 5 , wherein the one or more processors are configured to:
communicate with one or more of a mobile terminal, a network, and an autonomous vehicle other than a vehicle containing the terminal.
8 . A method performed by a base station, the method comprising:
receiving a first signal related to request information including information regarding a number of downlink (DL) positioning reference signal (PRS) resources, information regarding a DL PRS resource bandwidth, and information regarding a DL PRS resource repetition;
transmitting a second signal related to DL PRS configuration information; and
transmitting one or more DL PRSs based on the second signal related to the DL PRS configuration information,
wherein the base station configures the terminal with (i) a first physical random access channel (PRACH) preamble related to an on-demand DL PRS request, (ii) a second PRACH preamble related to an on-demand sounding reference signal (SRS) request, (iii) a third PRACH preamble related to both the on-demand DL PRS request and the on-demand SRS request, and
wherein the first signal is received based on the first PRACH preamble or the third PRACH preamble.