Method and apparatus for handling sidelink reference signal for beam management in a wireless communication system

Patent metadata

Field	Value
Publication number	US-2025030470-A1
Application number	US-202418775874-A
Country	US
Kind code	A1
Filing date	Jul 17, 2024
Priority date	Jul 21, 2023
Publication date	Jan 23, 2025
Grant date	—

Abstract

Methods, systems, and apparatuses are provided for handling sidelink reference signals for beam management in a wireless communication system, with a method of a first device comprising being scheduled or requested to perform one or more standalone Sidelink (SL) Channel State Information Reference Signal (CSI-RS) transmissions, receptions, or measurements in a first sidelink Transmission Time Interval (TTI) in a first sidelink resource pool in a sidelink carrier or cell, being scheduled or requested to perform a first sidelink data and/or feedback transmission or reception in the first sidelink TTI in the sidelink carrier or cell, and determining to perform either the one or more standalone SL CSI-RS transmissions, receptions, or measurements, or the first sidelink data and/or feedback transmission or reception in the first sidelink TTI, at least based on a parameter of a standalone SL CSI-RS.

First claim

What is claimed is:

1 . A method of a first device, comprising:
being scheduled or requested to perform one or more standalone Sidelink (SL) Channel State Information Reference Signal (CSI-RS) transmissions, receptions, or measurements in a first sidelink Transmission Time Interval (TTI) in a first sidelink resource pool in a sidelink carrier or cell; being scheduled or requested to perform a first sidelink data and/or feedback transmission or reception in the first sidelink TTI in the sidelink carrier or cell; and determining to perform either the one or more standalone SL CSI-RS transmissions, receptions, or measurements, or the first sidelink data and/or feedback transmission or reception in the first sidelink TTI, at least based on a parameter of a standalone SL CSI-RS.

2 . The method of claim 1 , wherein the parameter of the standalone SL CSI-RS comprises any of:
a first priority threshold provided by a configuration of the first sidelink resource pool or a sidelink configuration of the first device, or a priority value provided by the configuration of the first sidelink resource pool, or a priority value provided by a configuration associated with a second device or destination, wherein the one or more standalone SL CSI-RS transmissions are performed for the second device or destination or the one or more standalone SL CSI-RSs are transmitted from the second device or destination, or a priority value associated with a specific SL logical channel associated with a second device or destination, wherein the one or more standalone SL CSI-RS transmissions are performed for the second device or destination or the one or more standalone SL CSI-RSs are transmitted from the second device or destination, or a priority value indicated by a first sidelink control information, wherein the one or more standalone SL CSI-RS receptions or measurements are scheduled, assigned, allocated, or reserved by the first sidelink control information, or the standalone SL CSI-RS transmissions or receptions are considered with higher priority than the sidelink data and/or feedback transmission or reception.

3 . The method of claim 1 , wherein:
the first sidelink data and/or feedback transmission or reception is associated with a second priority value, and/or when the second priority value is smaller than the parameter, the first device performs the first sidelink data and/or feedback transmission or reception in the first sidelink TTI and/or does not perform the one or more standalone SL CSI-RS transmissions or receptions or measurements in the first sidelink TTI, and/or when the second priority value is larger than the parameter, the first device performs the one or more standalone SL CSI-RS transmissions, receptions, or measurements in the first sidelink TTI and/or does not perform the first sidelink data and/or feedback transmission or reception in the first sidelink TTI.

4 . The method of claim 1 , wherein:
the one or more standalone SL CSI-RSs are not associated with specific services or specific higher layer protocol, and/or the one or more standalone SL CSI-RS transmissions, receptions, or measurements are not multiplexed with any sidelink data transmission in the first sidelink TTI, and/or the one or more standalone SL CSI-RS transmissions, receptions, or measurements do not accompany sidelink data transmission in the first sidelink TTI.

5 . The method of claim 1 , wherein:
the first device is scheduled or requested to perform one or more non-standalone SL CSI-RS transmissions or receptions in a second sidelink TTI in the sidelink carrier or cell, wherein the one or more non-standalone SL CSI-RS transmissions or receptions are multiplexed with a second sidelink data transmission in the second sidelink TTI, and/or the non-standalone SL CSI-RS transmissions or receptions are not associated with the parameter of the standalone SL CSI-RS, and/or the non-standalone SL CSI-RS transmissions or receptions are not associated with a priority value, and/or there is no priority value for the non-standalone SL CSI-RS transmissions or receptions, and/or the non-standalone SL CSI-RS transmissions or receptions are not associated with a priority threshold, and/or there is no priority threshold for the non-standalone SL CSI-RS transmissions or receptions.

6 . The method of claim 1 , wherein:
the first device has or receives a configuration of a network scheduling mode for acquiring sidelink resources, and/or when the first device is triggered or requested to perform the one or more standalone SL CSI-RS transmissions, and when the first device has no sidelink resources to perform the one or more standalone SL CSI-RS transmissions, the first device triggers a sidelink buffer status report or a scheduling request to a network node, and/or the first device transmits the sidelink buffer status report or the scheduling request to the network node.

7 . The method of claim 1 , wherein:
the first device is triggered or requested to perform the one or more standalone SL CSI-RS transmissions, via one or more first Transmission (TX) beams, and/or one of the one or more standalone SL CSI-RS transmissions is transmitted via one of the one or more first TX beams, and/or the first device performs a first sensing-based resource selection for selecting at least a first sidelink resource in the first sidelink resource pool, and/or the first device determines a first set of identified or valid candidate resources based on a sensing result in the first sidelink resource pool, and/or the first device selects the first sidelink resource from the first set of identified or valid candidate resources, and/or the first device performs the one or more standalone SL CSI-RS transmissions on the selected first sidelink resource.

8 . The method of claim 7 , wherein:
the first device transmits a first sidelink control information via a first TX beam, wherein the first sidelink control information schedules, allocates, or indicates the one or more standalone SL CSI-RS transmissions, and/or the one or more first TX beams comprise the first TX beam, and/or the first device transmits the first sidelink control information and the one or more standalone SL CSI-RS transmissions in the first sidelink TTI.

9 . The method of claim 8 , wherein:
the first device determines the first set of identified or valid candidate resources based on a sensing result via a first Reception (RX) beam, wherein the first RX beam is determined, derived from, or associated with the first TX beam, and/or the first device determines the first set of identified or valid candidate resources based on the sensing result via one or more first RX beams, wherein the one or more first RX beams are determined, derived from, or associated with the first TX beam, and/or the first device determines the first set of identified or valid candidate resources based on the sensing result via one or more first RX beams, wherein the one or more first RX beams are determined, derived from, or associated with the one or more first TX beams.

10 . A method of a first device, comprising:
obtaining or receiving a configuration of a first sidelink resource pool in a sidelink carrier or cell; obtaining or receiving a configuration of a first one or more resources for standalone Sidelink (SL) Channel State Information Reference Signal (CSI-RS) transmissions, receptions, or measurements in the sidelink carrier or cell; obtaining or receiving a configuration of a second one or more resources for SL data and/or feedback transmissions, receptions, or measurements in the sidelink carrier or cell; and performing one or more standalone SL CSI-RS transmissions, receptions, or m

Assignees

• Asus Technology Licensing Inc

Inventors

• Li Ming-Che
• Huang Chun-Wei
• Tseng Li-Chih
• Kung Yi-Hsuan

Classifications

• H04L5/0082

  at predetermined intervals · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · 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

• H04W72/25 Primary

  between terminals via a wireless link, e.g. sidelink · CPC title

• H04W72/046

  the resource being in the space domain, e.g. beams · CPC title