Method and device for transmitting information related to sidelink channel in nr v2x

Patent metadata

Field	Value
Publication number	US-2022182866-A1
Application number	US-202017437358-A
Country	US
Kind code	A1
Filing date	Apr 2, 2020
Priority date	Apr 2, 2019
Publication date	Jun 9, 2022
Grant date	—

Abstract

A method for performing wireless communication by a first device and a device for supporting same are provided. The method may comprise the steps of: receiving, from a second device, sidelink control information (SCI) including a field indicating transmission of a sidelink (SL) channel state information reference signal (CSI-RS); on the basis of the field indicating the transmission of the SL CSI-RS, determining that a report on SL channel state information has been requested by the second device; on the basis of the SL CSI-RS, acquiring the SL channel state information related to the channel state between the first device and the second device; and transmitting the SL channel state information to the second device.

First claim

1 - 20 . (canceled)

21 . A method for performing wireless communication by a first device, the method comprising:
receiving, from a second device, a first sidelink control information (SCI) including a field representing transmission of a sidelink (SL) channel state information reference signal (CSI-RS); determining that a report of SL channel state information is requested by the second device, based on the field representing transmission of the SL CSI-RS; obtaining the SL channel state information related to a channel state between the first device and the second device based on the SL CSI-RS; transmitting, to the second device through a physical sidelink control channel (PSCCH), a second SCI for scheduling a physical sidelink shared channel (PSSCH), wherein the second SCI includes priority information; and transmitting, to the second device through the PSSCH, the SL channel state information, wherein the priority information included in the second SCI is set to a value related to a highest priority.

22 . The method of claim 21 , wherein the SL channel state information includes at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), or a rank indicator (RI).

23 . The method of claim 21 , wherein the priority information included in the second SCI for scheduling the PSSCH is set to the value related to the highest priority, based on the SL channel state information being transmitted through the PSSCH.

24 . The method of claim 21 , wherein a priority of the SL channel state information transmitted through the PSSCH is 1.

25 . The method of claim 21 , wherein a priority of the SL channel state information is higher than a priority of SL traffic data.

26 . The method of claim 21 , wherein SL measurement information is transmitted to the second device through the PSSCH.

27 . The method of claim 26 , wherein the SL measurement information includes at least one of reference signal received power (RSRP), reference signal received quality (RSRQ), or received signal strength indicator (RSSI) between the first device and the second device.

28 . The method of claim 26 , wherein a priority of the SL measurement information is higher than a priority of the SL channel state information.

29 . The method of claim 28 , wherein the priority of the SL channel state information is higher than a priority of SL traffic data.

30 . The method of claim 26 , wherein the SL measurement information is transmitted to the second device, based on reference signal received power (RSRP) between the first device and the second device measured by the first device being greater than a threshold value.

31 . The method of claim 26 , wherein the SL measurement information is transmitted to the second device, based on reference signal received power (RSRP) between the first device and the second device measured by the first device is smaller than a threshold value.

32 . The method of claim 26 , wherein the SL measurement information is transmitted to the second device, based on a first reference signal received power (RSRP) between the first device and the second device measured or reported by the first device being changed by more than a pre-configured threshold value, compared to a second RSRP measured or reported previously.

33 . A first device configured to perform wireless communication, the first device comprising:
one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to: receive, from a second device, a first sidelink control information (SCI) including a field representing transmission of a sidelink (SL) channel state information reference signal (CSI-RS); determine that a report of SL channel state information is requested by the second device, based on the field representing transmission of the SL CSI-RS; obtain the SL channel state information related to a channel state between the first device and the second device based on the SL CSI-RS; transmit, to the second device through a physical sidelink control channel (PSCCH), a second SCI for scheduling a physical sidelink shared channel (PSSCH), wherein the second SCI includes priority information; and transmit, to the second device through the PSSCH, the SL channel state information, wherein the priority information included in the second SCI is set to a value related to a highest priority.

34 . The first device of claim 33 , wherein the priority information included in the second SCI for scheduling the PSSCH is set to the value related to the highest priority, based on the SL channel state information being transmitted through the PSSCH.

35 . The first device of claim 33 , wherein a priority of the SL channel state information transmitted through the PSSCH is 1.

36 . The first device of claim 33 , wherein a priority of the SL channel state information is higher than a priority of SL traffic data.

37 . The first device of claim 33 , wherein SL measurement information is transmitted to the second device through the PSSCH.

38 . The first device of claim 37 , wherein a priority of the SL measurement information is higher than a priority of the SL channel state information.

39 . The first device of claim 38 , wherein the priority of the SL channel state information is higher than a priority of SL traffic data.

40 . An apparatus configured to control a first user equipment (UE), the apparatus comprising:
one or more processors; and one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to: receive, from a second UE, a first sidelink control information (SCI) including a field representing transmission of a sidelink (SL) channel state information reference signal (CSI-RS); determine that a report of SL channel state information is requested by the second UE, based on the field representing transmission of the SL CSI-RS; obtain the SL channel state information related to a channel state between the first UE and the second UE based on the SL CSI-RS; transmit, to the second UE through a physical sidelink control channel (PSCCH), a second SCI for scheduling a physical sidelink shared channel (PSSCH), wherein the second SCI includes priority information; and transmit, to the second UE through the PSSCH, the SL channel state information, wherein the priority information included in the second SCI is set to a value related to a highest priority.

Assignees

• Lg Electronics Inc

Inventors

• Lee Seungmin
• Seo Hanbyul
• Hwang Daesung

Classifications

• H04B17/328

  Reference signal received power [RSRP]; Reference signal received quality [RSRQ] · CPC title

• H04W92/18

  between terminal devices · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04B7/0639

  Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection · CPC title

• H04B7/0632

  Channel quality parameters, e.g. channel quality indicator [CQI] · CPC title