Method for transmitting SRS and related products

Patent metadata

Field	Value
Publication number	US-12457142-B2
Application number	US-202217864784-A
Country	US
Kind code	B2
Filing date	Jul 14, 2022
Priority date	Jan 14, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A method for transmitting a sounding reference signal (SRS) and related products are provided. The method includes the following. A terminal device transmits a first SRS to a network device in an SRS region of N sub-bands of an SRS bandwidth. The terminal device receives first downlink control information (DCI).

First claim

What is claimed is:

1. A method for transmitting a sounding reference signal (SRS), the method comprising:
transmitting, by a terminal device, a first SRS to a network device in an SRS region of N sub-bands of an SRS bandwidth, wherein N is an integer and greater than 1, each of the N sub-bands comprising one SRS region, and a resource block (RB) quantity in the SRS region being less than or equal to the RB quantity in a sub-band that the SRS region belongs to,
wherein
an RB configuration quantity in a sub-band of the SRS bandwidth is M, M being an integer and greater than 0,
a SRS resource comprises a start configuration position of the SRS region in a sub-band, and
transmitting, by the terminal device, the first SRS to the network device in the SRS region of the N sub-bands of the SRS bandwidth comprises:
determining, by the terminal device, a start position of an SRS region of a first sub-band among the N sub-bands to be the start configuration position, in response to an RB quantity in the first sub-band being M, wherein the first sub-band is any one of the N sub-bands; and
transmitting, by the terminal device, the first SRS to the network device in the SRS region of the first sub-band.

2. The method of claim 1 , wherein prior to transmitting, by the terminal device, the first SRS to the network device in the SRS region of the N sub-bands of the SRS bandwidth, the method further comprises:
receiving, by the terminal device, SRS configuration information and second downlink control information (DCI), wherein the second DCI is used for triggering a group of SRS resources indicated in the SRS configuration information and indicating that the terminal device transmits the first SRS on the SRS resource.

3. The method of claim 2 , wherein subsequent to transmitting, by the terminal device, the first SRS, the method further comprises:
receiving, by the terminal device, first DCI;
obtaining, by the terminal device, sub-band indication information from the first DCI, the sub-band indication information indicating a target sub-band among the N sub-bands; and
transmitting, by the terminal device, a second SRS to the network device in the target sub-band.

4. The method of claim 3 , wherein transmitting, by the terminal device, the second SRS to the network device in the target sub-band comprises:
transmitting, by the terminal device, the second SRS to the network device in the target sub-band on the SRS resource triggered by the second DCI.

5. The method of claim 4 , wherein subsequent to obtaining, by the terminal device, the sub-band indication information from the first DCI and prior to transmitting, by the terminal device, the second SRS to the network device in the target sub-band, the method further comprises:
determining, by the terminal device, a position encoding of the target sub-band in the SRS bandwidth according to the sub-band indication information and the SRS resource, wherein the position encoding of the target sub-band indicates the target sub-band among the N sub-bands.

6. The method of claim 5 , wherein the sub-band indication information comprises one sub-band position information, the SRS resource comprises a start configuration position of the SRS region in a sub-band, and determining, by the terminal device, the position encoding of the target sub-band in the SRS bandwidth according to the sub-band indication information and the SRS resource comprises:
performing, by the terminal device, a modulo operation on a sum of a position encoding in the sub-band position information and the start configuration position with N, to obtain a position of the target sub-band.

7. The method of claim 5 , wherein the sub-band indication information comprises one sub-band position information, the SRS resource comprises a start configuration position and a cyclic-shifted candidate position of the SRS region in a sub-band, an RB configuration quantity in a sub-band of the SRS bandwidth is M, and determining, by the terminal device, the position encoding of the target sub-band in the SRS bandwidth according to the sub-band indication information and the SRS resource comprises:
performing, by the terminal device, a modulo operation on the candidate position and a difference between N and M, to obtain a first modulo result; and
performing, by the terminal device, a modulo operation on a sum of a position encoding in the sub-band position information, the start configuration position, and the first modulo result with N, to obtain the position encoding of the target sub-band.

8. The method of claim 3 , wherein the sub-band indication information comprises at least two sub-band position information, and prior to receiving, by the terminal device, the first DCI, the method further comprises:
receiving, by the terminal device, position indication information, wherein the position indication information indicates target sub-band position information among the at least two sub-band position information; and
a position encoding in the target sub-band position information is a position encoding of the target sub-band in the SRS bandwidth, wherein the position encoding of the target sub-band indicates the target sub-band among the N sub-bands.

9. A method for transmitting a sounding reference signal (SRS), the method comprising:
transmitting, by a terminal device, a first SRS to a network device in an SRS region of N sub-bands of an SRS bandwidth, wherein N is an integer and greater than 1;
a resource block (RB) configuration quantity in a sub-band of the SRS bandwidth being M, M being an integer and greater than 0;
the N sub-bands being at least one of a first sub-band and a second sub-band, an RB quantity in the first sub-band being M, and an RB quantity in the second sub-band being less than M;
each of the N sub-bands comprising one SRS region, and an RB quantity in the SRS region being less than or equal to the RB quantity in a sub-band that the SRS region belongs to.

10. The method of claim 9 , wherein a start configuration position of the SRS region in a sub-band is indicated by the network device, and transmitting, by the terminal device, the first SRS to the network device in the SRS region of the N sub-bands of the SRS bandwidth comprises:
determining, by the terminal device, a start position of an SRS region of the first sub-band to be the start configuration position, in response to the N sub-bands comprising the first sub-band; and
transmitting, by the terminal device, the first SRS to the network device in the SRS region of the first sub-band among the N sub-bands.

11. The method of claim 9 , wherein transmitting, by the terminal device, the first SRS to the network device in the SRS region of the N sub-bands of the SRS bandwidth comprises:
in response to the N sub-bands comprising the second sub-band,
determining, by the terminal device, not to transmit the first SRS in the second sub-band; or
determining, by the terminal device, a start position of an SRS region of the second sub-band to be a first RB position in the second sub-band that is available for SRS transmission, and transmitting the first SRS to the network device in the SRS region of the second sub-band among the N sub-bands.

12. A method for transmitting a sounding reference signal (SRS), the method comprising:
receiving, by a network device, a first SRS transmitted by a terminal device, the first SRS being transmitted by the terminal device in an SRS region of N sub-bands of an SRS bandwidth, wherein N is an integer and greater than 1, each of the N sub-bands comprising one SRS region, and a resource block (RB) quantity in the SRS region being less than or equal to the RB quantity i

Assignees

• Beijing Unisoc Comm Tech Co Ltd

Inventors

• Wang Hualei

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04L27/2605

  Symbol extensions, e.g. Zero Tail, Unique Word [UW] · CPC title

• H04L5/00

  Arrangements affording multiple use of the transmission path · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title