Method and apparatus for performing V2X communication in a wireless communication system

Patent metadata

Field	Value
Publication number	US-12489533-B2
Application number	US-202017773688-A
Country	US
Kind code	B2
Filing date	Nov 4, 2020
Priority date	Nov 7, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Provided are a method and apparatus for performing vehicle-to-everything (V2X) communication in a wireless communication system, and an operation method of a first terminal in a wireless communication system includes: receiving, from a second terminal, a PC5 radio resource control (RRC) reconfiguration message including configuration information for measurement of sidelink reference signal received power (SL-RSRP); measuring the SL-RSRP, based on the configuration information for measuring the SL-RSRP; and when a reporting type regarding the measurement of the SL-RSRP is periodic reporting and a measurement value of a Layer 3 filtered SL-RSRP is present, transmitting the measurement value of the Layer 3 filtered SL-RSRP to the second terminal.

First claim

The invention claimed is:

1 . An operation method of a first terminal in a wireless communication system, the operation method comprising:
receiving, from a second terminal, a radio resource control (RRC) reconfiguration message including configuration information associated with measurement of sidelink reference signal received power (SL-RSRP), wherein the configuration information associated with the measurement of the SL-RSRP includes information for a timer related to a periodic reporting regarding the measurement of the SL-RSRP; performing measurement of a Layer 3 filtered SL-RSRP, based on the configuration information associated with the measurement of the SL-RSRP; starting the timer related to the periodic reporting, based on the information for the timer; and transmitting, to the second terminal, the measurement result of the Layer 3filtered SL-RSRP, based on an expiry of the timer or existence of the measurement result of the Layer 3 filtered SL-RSRP.

2 . The operation method of claim 1 ,
wherein performing measurement of the Layer 3 filtered SL-RSRP is associated with a filtering coefficient, a latest received measurement result of SL-RSRP, and a previous Layer 3 filtered measurement result of SL-RSRP, and wherein the filtering coefficient is related to the measurement of the SL-RSRP and is included in the configuration information associated with the measurement of the SL-RSRP.

3 . The operation method of claim 1 , wherein the configuration information associated with the measurement of the SL-RSRP is configured for PC5 RRC connection between the first terminal and the second terminal, wherein the first terminal communicates with the second terminal for unicast.

4 . The operation method of claim 1 , wherein the transmitting of the measurement result of the Layer 3 filtered SL-RSRP to the second terminal comprises, regardless of whether the timer related to the periodic reporting has expired, transmitting the measurement result of the Layer 3 filtered SL-RSRP to the second terminal.

5 . The operation method of claim 1 , wherein the transmitting of the measurement result of the Layer 3 filtered SL-RSRP to the second terminal comprises, when the measurement result of the Layer 3 filtered SL-RSRP is greater than a threshold value, transmitting the measurement result of the Layer 3 filtered SL-RSRP to the second terminal.

6 . The operation method of claim 1 , wherein the transmitting of the measurement result of the Layer 3 filtered SL-RSRP to the second terminal comprises, when the measurement result of the Layer 3 filtered SL-RSRP is less than a threshold value, transmitting the measurement result of the Layer 3 filtered SL-RSRP to the second terminal.

7 . An operation method of a second terminal in a wireless communication system, the operation method comprising:
receiving, from a base station, a radio resource control (RRC) reconfiguration message including configuration information associated with measurement of sidelink reference signal received power (SL-RSRP), wherein the configuration information associated with the measurement of the SL-RSRP includes information for a timer related to a periodic reporting regarding the measurement of the SL-RSRP; transmitting, to a first terminal, a RRC reconfiguration message including the configuration information associated with the measurement of the SL-RSRP, based on the RRC reconfiguration message received from the base station, wherein the SL-RSRP is measured by the first terminal based on the configuration information associated with the measurement of the SL-RSRP; and receiving a measurement result of a Layer 3 filtered SL-RSRP from the first terminal, wherein the measurement result of the Layer 3 filtered SL-RSRP is received from the first terminal in case that the measurement of the Layer 3 filtered SL-RSRP is performed by the first terminal.

8 . The operation method of claim 7 , wherein the configuration information associated with the measurement of the SL-RSRP is configured for PC5 RRC connection between the first terminal and the second terminal, wherein the first terminal communicates with the second terminal for unicast.

9 . The operation method of claim 7 , wherein the timer related to the periodic reporting starts based on the information for the timer.

10 . The operation method of claim 9 , wherein, regardless of whether the timer related to the periodic reporting has expired, the measurement result of the Layer 3 filtered SL-RSRP is received from the first terminal.

11 . A first terminal in a wireless communication system, the first terminal comprising:
a transceiver; and at least one processor configured to:
receive, from a second terminal through the transceiver, a radio resource control (RRC) reconfiguration message including configuration information associated with measurement of sidelink reference signal received power (SL-RSRP), wherein the configuration information associated with the measurement of the SL-RSRP includes information for a timer related to a periodic reporting regarding the measurement of the SL-RSRP;
perform measurement of a Layer 3 filtered SL-RSRP, based on the configuration information associated with the measurement of the SL-RSRP;
start the timer related to the periodic reporting, based on the information for the timer; and
transmit, to the second terminal through the transceiver, the measurement result of the Layer 3 filtered SL-RSRP based on an expiry of the timer or existence of the measurement result of the Layer 3 filtered SL-RSRP.

12 . A second terminal in a wireless communication system, the second terminal comprising:
a transceiver; and at least one processor configured to:
receive, from a base station through the transceiver, a radio resource control (RRC) reconfiguration message including configuration information associated with measurement of sidelink reference signal received power (SL-RSRP), wherein the configuration information associated with the measurement of the SL-RSRP includes information for a timer related to a periodic reporting regarding the measurement of the SL-RSRP;
transmit, to a first terminal through the transceiver, a RRC reconfiguration message including the configuration information associated with the measurement of the SL-RSRP, based on the RRC reconfiguration message received from the base station, wherein the SL-RSRP is measured by the first terminal based on the configuration information associated with the measurement of the SL-RSRP; and
receive, from the first terminal through the transceiver, a measurement result of a Layer 3 filtered SL-RSRP,
wherein the measurement result of the Layer 3 filtered SL-RSRP is received from the first terminal based on an expiry of the timer related to the periodic reporting or existence of the measurement result of the Layer 3 filtered SL-RSRP. in case that the measurement of the Layer 3 filtered SL-RSRP is performed by the first terminal.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jung Sangyeob
• Agiwal Anil
• Kang Hyunjeong

Classifications

• H04W52/383

  power control in peer-to-peer links · CPC title

• H04W52/241

  taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo · CPC title

• H04W52/10

  Open loop power control · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W4/40 Primary

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title