# US 12,225,553 B2 · Method and apparatus for supporting unicast link establishment for sidelink positioning in a wireless communication system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,225,553 B2
- Document ID: US12225553B2
- Status: Granted
- Kind: B2
- Application number: 18/242,866
- Filed: 2023-09-06
- Published: 2024-04-11
- Granted: 2025-02-11
- Earliest claimed: 2022-10-04
- Assignees: ASUS Technology Licensing Inc.
- Applicants: ASUS Technology Licensing Inc.
- Inventors: Li-Te Pan
- Web page: https://patentgrep.com/patent/US12225553B2

## CPC

- H04W 72/25: between terminals via a wireless link, e.g. sidelink
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 76/14: Direct-mode setup
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method and device for a first User Equipment (UE) are disclosed. In one embodiment, the first UE initiates a procedure for establishing a PC5 connection with a second UE. Furthermore, the first UE sends a first PC5 message to the second UE for request of establishment of the PC5 connection in the procedure, wherein the first PC5 message includes a first Sidelink (SL) positioning or ranging related information.

## Claims

### Claim 1

A method for a first User Equipment (UE), comprising:
initiating a procedure for establishing a PC5 connection with a second UE;
sending a first PC5 message to the second UE for request of establishment of the PC5 connection in the procedure, wherein the first PC5 message includes a first Sidelink (SL) positioning or ranging related parameter indicating the first UE supporting a role of SL target UE; and
performing an SL Positioning Protocol and Ranging or Sidelink Positioning Protocol (SLPP/RSPP) message transfer with the second UE using the established PC5 connection, wherein the SLPP/RSPP message transfer is used for sidelink positioning operation.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
the first UE receives a second PC5 message from the second UE for completing the PC5 connection establishment, wherein the second PC5 message includes a second SL positioning or ranging related parameter.

### Claim 3 (depends on 2)

The method of claim 2, wherein the second SL positioning or ranging related parameter at least indicates that the second UE supports a role of SL reference or anchor UE or the second UE agrees to become a role of SL reference or anchor UE for the first UE.

### Claim 4 (depends on 2)

The method of claim 2, wherein the first PC5 message is a Direct Communication Request message or a ProSe Direct Link Establishment Request message, and the second PC5 message is a Direct Communication Accept message or a ProSe Direct Link Establishment Accept message.

### Claim 5 (depends on 1)

The method of claim 1, wherein the SLPP/RSPP message transfer contains at least one of capability transfer, assistance data transfer, and location information transfer for sidelink positioning.

### Claim 6

A first User Equipment (UE), comprising:
a processor; and
a memory operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to:
initiate a procedure for establishing a PC5 connection with a second UE;
send a first PC5 message to the second UE for request of establishment of the PC5 connection in the procedure, wherein the first PC5 message includes a first Sidelink (SL) positioning or ranging related parameter indicating the first UE supporting a role of SL target UE; and
perform an SL Positioning Protocol and Ranging or Sidelink Positioning Protocol (SLPP/RSPP) message transfer with the second UE using the established PC5 connection, wherein the SLPP/RSPP message transfer is used for sidelink positioning operation.

### Claim 7 (depends on 6)

The first UE of claim 6, wherein the processor is further configured to execute a program code stored in the memory to:
receive a second PC5 message from the second UE for completing the PC5 connection establishment, wherein the second PC5 message includes a second SL positioning or ranging related parameter.

### Claim 8 (depends on 7)

The first UE of claim 7, wherein the second SL positioning or ranging related parameter at least indicates that the second UE supports a role of SL reference or anchor UE or the second UE agrees to become a role of SL reference or anchor UE for the first UE.

### Claim 9 (depends on 7)

The first UE of claim 7, wherein the first PC5 message is a Direct Communication Request message or a ProSe Direct Link Establishment Request message, and the second PC5 message is a Direct Communication Accept message or a ProSe Direct Link Establishment Accept message.

### Claim 10 (depends on 6)

The first UE of claim 6, wherein the SLPP/RSPP message transfer contains at least one of capability transfer, assistance data transfer, and location information transfer for sidelink positioning.

### Claim 11

A method for a second User Equipment (UE), comprising:
receiving a first PC5 message to perform a procedure for establishing a PC5 connection with a first UE from the first UE, wherein the first PC5 message includes a first Sidelink (SL) positioning or ranging related parameter indicating the first UE supporting a role of SL target UE;
sending a second PC5 message to the first UE for completing the procedure for establishing the PC5 connection, wherein the second PC5 message includes a second SL positioning or ranging related parameter indicating the second UE supporting a role of SL reference or anchor UE; and
performing an SL Positioning Protocol or Ranging or Sidelink Positioning Protocol (SLPP/RSPP) message transfer with the first UE using the established PC5 connection, wherein the SLPP/RSPP message transfer is used for sidelink positioning operation.

### Claim 12 (depends on 11)

The method of claim 11, wherein the first PC5 message is a Direct Communication Request message or a ProSe Direct Link Establishment Request message, and the second PC5 message is a Direct Communication Accept message or a ProSe Direct Link Establishment Accept message.

### Claim 13 (depends on 11)

The method of claim 11, wherein the first SL positioning or ranging related parameter at least indicates that the first UE supports a role of SL target UE or the first UE expects to use the second UE as a role of SL reference or anchor UE.

### Claim 14 (depends on 11)

The method of claim 11, wherein the SLPP/RSPP message transfer contains at least one of capability transfer, assistance data transfer, and location information transfer for sidelink positioning.

### Claim 15

A second User Equipment (UE), comprising:
a processor; and
a memory operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to:
receive a first PC5 message to perform a procedure for establishing a PC5 connection with a first UE from the first UE, wherein the first PC5 message includes a first Sidelink (SL) positioning or ranging related parameter indicating the first UE supporting a role of SL target UE;
send a second PC5 message to the first UE for completing the procedure for establishing the PC5 connection, wherein the second PC5 message includes a second SL positioning or ranging related parameter indicating the second UE suporting a role of SL reference or anchor UE; and
perform an SL Positioning Protocol and Ranging or Sidelink Positioning Protocol (SLPP/RSPP) message transfer with the first UE using the established PC5 connection, wherein the SLPP/RSPP message transfer is used for sidelink positioning operation.

### Claim 16 (depends on 15)

The second UE of claim 15, wherein the first PC5 message is a Direct Communication Request message or a ProSe Direct Link Establishment Request message, and the second PC5 message is a Direct Communication Accept message or a ProSe Direct Link Establishment Accept message.

### Claim 17 (depends on 15)

The second UE of claim 15, wherein the first SL positioning or ranging related parameter at least indicates that the first UE supports a role of SL target UE or the first UE expects to use the second UE as a role of SL reference or anchor UE.

### Claim 18 (depends on 15)

The second UE of claim 15, wherein the SLPP/RSPP message transfer contains at least one of capability transfer, assistance data transfer, and location information transfer for sidelink positioning.