# US 12,120,047 B2 · Sidelink channel configuration method, terminal device, and network device

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- Number: US 12,120,047 B2
- Document ID: US12120047B2
- Status: Granted
- Kind: B2
- Application number: 17/170,863
- Filed: 2021-02-08
- Published: 2021-06-03
- Granted: 2024-10-15
- Earliest claimed: 2018-08-10
- Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Inventors: Zhenshan Zhao; Qianxi Lu; Huei-Ming Lin
- Web page: https://patentgrep.com/patent/US12120047B2

## CPC

- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 27/2613: {Structure of the reference signals}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 41/0803: Configuration setting
- H04L 41/0806: for initial configuration or provisioning, e.g. plug-and-play
- H04L 41/0816: the condition being an adaptation, e.g. in response to network events
- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 4/46: for vehicle-to-vehicle communication [V2V]
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 76/14: Direct-mode setup
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Embodiments of the present disclosure provide a sidelink channel configuration method, a terminal device, and a network device. The method includes determining, in a terminal device, that a second time domain symbol in a first sidelink channel is a first Demodulation Reference Signal (DMRS) time domain symbol, and a difference in symbol locations of two adjacent DMRS time domain symbols is N. The first sidelink channel occupies K time domain symbols, and K is a positive integer, where 1≤N<K.

## Claims

### Claim 1

A method for sidelink channel configuration, comprising:
receiving, in a terminal device, first configuration information sent from a network device by control channel signaling, wherein the first configuration information is used to indicate that a second time domain symbol in a first sidelink channel is a first Demodulation Reference Signal (DMRS) time domain symbol; and
determining, in the terminal device, that the second time domain symbol in the first sidelink channel is the first DMRS time domain symbol, and a difference in symbol locations of two adjacent DMRS time domain symbols is N, wherein the first sidelink channel occupies K time domain symbols, and a value of K is a positive integer, 1≤N<K;
wherein the method further comprises:
receiving, in the terminal device, further configuration information sent from the network device, wherein the further configuration information is used to indicate first index information; and determining, in the terminal device, a first DMRS pattern according to the first index information and a first correspondence, wherein the first correspondence comprises a correspondence between index information and DMRS patterns, and the first DMRS pattern is the DMRS pattern for transmitting the first sidelink channel, and wherein the first correspondence is pre-configured to the terminal device.

### Claim 2 (depends on 1)

The method according to claim 1, wherein determining, in the terminal device, that the second time domain symbol in the first sidelink channel is the first DMRS time domain symbol comprises:
according to pre-configuration information, determining, in the terminal device, that the second time domain symbol in the first sidelink channel is the first DMRS time domain symbol.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the N is pre-configured to the terminal device, or the N is configured to the terminal device by a network device.

### Claim 4 (depends on 1)

The method according to claim 1, further comprising:
receiving, in the terminal device, third configuration information for configuring a resource pool sent from a network device, wherein the third configuration information is further used to indicate a DMRS pattern for the first sidelink channel transmitted in the resource pool.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising:
determining, in the terminal device, that a difference in subcarrier locations of two adjacent DMRS signals in any Physical Resource Block (PRB) on each DMRS time domain symbol is M, where M≥1.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the Mis pre-configured to the terminal device, or the Mis configured by a network device to the terminal device.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the first sidelink channel is any one of a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel (PSSCH), a feedback channel, and a Physical Sidelink Broadcast Channel (PSBCH).

### Claim 8 (depends on 7)

The method according to claim 7, wherein a DMRS pattern for the PSSCH is indicated by the PSCCH corresponding to the PSSCH, or the N corresponding to DMRS for the PSSCH is indicated by the PSCCH corresponding to the PSSCH.

### Claim 9 (depends on 7)

The method according to claim 7, wherein the PSCCH and the PSSCH have different DMRS patterns.

### Claim 10 (depends on 1)

The method according to claim 1, wherein the first sidelink channel occupies at least one subframe or slot.

### Claim 11

A terminal device, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to cause the terminal device to:
receive first configuration information sent from a network device by control channel signaling, wherein the first configuration information is used to indicate that a second time domain symbol in a first sidelink channel is a first Demodulation Reference Signal (DMRS) time domain symbol; and
determine that the second time domain symbol in the first sidelink channel is the first DMRS time domain symbol, and a difference in symbol locations of two adjacent DMRS time domain symbols is N, wherein the first sidelink channel occupies K time domain symbols, and a value of K is a positive integer, where 1≤N<K;
receive further configuration information sent from the network device, wherein the further configuration information is used to indicate first index information; and
determine a first DMRS pattern according to the first index information and a first correspondence, wherein the first correspondence comprises a correspondence between index information and DMRS patterns, and the first DMRS pattern is the DMRS pattern for transmitting the first sidelink channel, and wherein the first correspondence is pre-configured to the terminal device.

### Claim 12 (depends on 11)

The terminal device according to claim 11, wherein the processor is configured to call and run the computer program stored in the memory to cause the terminal device to:
according to pre-configuration information, determine that the second time domain symbol in the first sidelink channel that occupies the K time domain symbols is the first DMRS time domain symbol.

### Claim 13 (depends on 11)

The terminal device according to claim 11, wherein the N is pre-configured to the terminal device, or the N is configured to the terminal device by a network device.

### Claim 14 (depends on 11)

The terminal device according to claim 11, further comprising:
a transceiver,
wherein the processor is configured to control the transceiver to receive third configuration information for configuring a resource pool sent from a network device, and
wherein the third configuration information is further used to indicate a DMRS pattern for the first sidelink channel transmitted in the resource pool.