Method and apparatus for sidelink control information of sidelink reference signal in a wireless communication system

Patent metadata

Field	Value
Publication number	US-12058705-B2
Application number	US-202318397063-A
Country	US
Kind code	B2
Filing date	Dec 27, 2023
Priority date	Dec 28, 2022
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

In an example, a device receives a configuration of a sidelink resource pool for sidelink data transmission and sidelink reference signal transmission. The device determines to perform a sidelink reference signal transmission in a first Transmission Time Interval (TTI) of the sidelink resource pool, wherein the sidelink reference signal transmission is associated with a destination identity (ID) and a source ID, and the sidelink reference signal transmission has a highest priority among one or more pending sidelink reference signals and one or more sidelink logical channels with pending sidelink data. The device generates a first sidelink data packet based on a first sidelink logical channel with first pending sidelink data, wherein the first sidelink data packet is associated with the destination ID and the source ID. The device performs, in the first TTI, the sidelink reference signal transmission and a sidelink data transmission for transmitting the first sidelink data packet.

First claim

The invention claimed is:

1. A method of a first device, the method comprising:
receiving a configuration of a sidelink resource pool for sidelink data transmission and sidelink reference signal transmission;
determining to perform a first sidelink reference signal transmission in a first Transmission Time Interval (TTI) of the sidelink resource pool, wherein the first sidelink reference signal transmission is associated with a first destination identity (ID) and a first source ID, and wherein the first sidelink reference signal transmission has the highest priority among one or more pending sidelink reference signals and one or more sidelink logical channels with pending sidelink data;
generating a first sidelink data packet based on a first sidelink logical channel with first pending sidelink data, wherein the first sidelink data packet is associated with the first destination ID and the first source ID; and
performing, in the first TTI, the first sidelink reference signal transmission and a first sidelink data transmission for transmitting the first sidelink data packet.

2. The method of claim 1 , wherein at least one of:
the first sidelink logical channel is among the one or more sidelink logical channels; or
generating the first sidelink data packet comprises at least one of:
including at least some of the first pending sidelink data of the first sidelink logical channel in the first sidelink data packet based on the first sidelink logical channel being associated with the first destination ID and the first source ID; or
excluding, from inclusion in the first sidelink data packet, pending sidelink data of a second sidelink logical channel based on the second sidelink logical channel being associated with at least one of:
a second destination ID different than the first destination ID; or
a second source ID different than the first source ID.

3. The method of claim 1 , wherein:
the first sidelink reference signal transmission and the first sidelink data transmission are performed in the first TTI based on both the first sidelink reference signal transmission and the first sidelink data transmission being associated with the first destination ID and the first source ID.

4. The method of claim 1 , comprising:
determining not to perform both of the first sidelink reference signal transmission and a second sidelink data transmission in the first TTI based on:
the second sidelink data transmission being associated with at least one of:
a second destination ID different than the first destination ID; and
a second source ID different than the first source ID.

5. The method of claim 1 , comprising:
transmitting a first sidelink control information (SCI) for scheduling the first sidelink reference signal transmission and the first sidelink data transmission, wherein the first SCI is indicative of:
at least a portion of the first destination ID; and
at least a portion of the first source ID.

6. The method of claim 5 , wherein at least one of:
the first SCI at least one of comprises or corresponds to SCI format 2-D;
the method comprises performing transmission of a 1st stage SCI in the first TTI, wherein the 1st stage SCI comprises a field of a 2nd stage SCI format, and wherein the field is indicative of the SCI format 2-D; or
the field in the 1st stage SCI in the first TTI is not indicative of any of SCI format 2-A, SCI format 2-B, or SCI format 2-C, wherein each of the SCI format 2-A, the SCI format 2-B, and the SCI format 2-C is (i) associated with scheduling sidelink data transmission and (ii) not associated with scheduling sidelink reference signal transmission.

7. The method of claim 1 , wherein at least one of:
the first sidelink reference signal transmission comprises transmission of a sidelink positioning reference signal;
the sidelink data transmission is a Physical Sidelink Shared Channel (PSSCH) transmission;
the first TTI corresponds to a first slot;
the first sidelink reference signal transmission does not overlap in time domain with the first sidelink data transmission in the first TTI;
the first sidelink reference signal transmission and the first sidelink data transmission are associated with a same cast type; or
the same cast type is one of unicast, groupcast or broadcast.

8. The method of claim 1 , wherein at least one of:
the sidelink resource pool supports:
transmission of one or more sidelink data transmissions;
reception of one or more sidelink data transmissions;
transmission of one or more sidelink reference signals; and
reception of one or more sidelink reference signals;

the sidelink resource pool corresponds to a shared sidelink resource pool for:
transmission of one or more sidelink data transmissions;
reception of one or more sidelink data transmissions;
transmission of one or more sidelink reference signals; and
reception of one or more sidelink reference signals; or

the sidelink resource pool comprises:
resources for one or more sidelink data transmissions; and
resources for one or more sidelink reference signal transmissions.

9. A method of a first device, the method comprising:
receiving a configuration of a sidelink resource pool for sidelink data transmission and sidelink reference signal transmission;
generating, based on a first sidelink logical channel with first pending sidelink data, a first sidelink data packet for transmission in a first Transmission Time Interval (TTI) of the sidelink resource pool, wherein the first sidelink data packet is associated with a first destination identity (ID) and a first source ID, and wherein the first sidelink logical channel has the highest priority among one or more pending sidelink reference signals and one or more sidelink logical channels with pending sidelink data;
determining to perform a first sidelink reference signal transmission in the first TTI, wherein the first sidelink reference signal transmission is associated with the first destination ID and the first source ID; and
performing, in the first TTI, the first sidelink reference signal transmission and a first sidelink data transmission for transmitting the first sidelink data packet.

10. The method of claim 9 , wherein at least one of:
the first sidelink reference signal transmission is among the one or more pending sidelink reference signals;
determining to perform the first sidelink reference signal transmission in the first TTI is based on the first sidelink reference signal transmission being associated with the first destination ID and the first source ID; or
the method comprises determining not to perform a second sidelink reference signal transmission in the first TTI based on the second sidelink reference signal transmission being associated with at least one of:
a second destination ID different than the first destination ID; or
a second source ID different than the first source ID.

11. The method of claim 9 , wherein:
the first sidelink reference signal transmission and the first sidelink data transmission are performed in the first TTI based on both the first sidelink reference signal transmission and the first sidelink data transmission being associated with the first destination ID and the first source ID.

12. The method of claim 9 , comprising:
determining not to perform both of a second sidelink reference signal transmission and the first sidelink data transmission in the first TTI based on the second sidelink reference signal transmission being associated with at least one of:
a second destination ID different than the first destination ID; and
a second source ID different than the first source ID.

13. The method o

Assignees

• Asus Technology Licensing Inc

Inventors

• Li Ming-Che
• Tseng Li-Chih
• Pan Li-Te
• Huang Chun-Wei

Classifications

• H04L5/0082

  at predetermined intervals · 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

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/563

  of the wireless resources · CPC title

• H04W72/40 Primary

  Resource management for direct mode communication, e.g. D2D or sidelink · CPC title