Method for mapping positioning reference signal, terminal, and network-side device

Patent metadata

Field	Value
Publication number	US-12301503-B2
Application number	US-202217706379-A
Country	US
Kind code	B2
Filing date	Mar 28, 2022
Priority date	Sep 29, 2019
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A method for mapping a positioning reference signal, a terminal, and a network-side device are provided. The method for mapping a positioning reference signal is applied to a terminal and includes: obtaining mapping information of a positioning reference signal, where the mapping information indicates relative resource element offsets of at least some symbols in a positioning reference signal resource; and determining, based on the mapping information, a relative resource element offset of each symbol in the positioning reference signal resource.

First claim

What is claimed is:

1. A method for mapping a positioning reference signal, applied to a terminal and comprising:
obtaining mapping information of a positioning reference signal, wherein the mapping information indicates relative resource element offsets of at least some symbols in a positioning reference signal resource, the relative resource element offset is an offset relative to a resource element offset of a first symbol of the positioning reference signal resource; and
determining, based on the mapping information, a relative resource element offset of each symbol in the positioning reference signal resource;
wherein the obtaining mapping information of a positioning reference signal comprises:
obtaining a table corresponding to a comb structure of the positioning reference signal, wherein the table comprises at least one set of configuration information of relative resource element offsets.

2. The method for mapping a positioning reference signal according to claim 1 , wherein the obtaining mapping information of a positioning reference signal further comprises:
obtaining indication information transmitted by a network-side device, wherein the indication information is used for indicating the terminal to use configuration information of one of sets of relative resource element offsets in the table as the mapping information of the positioning reference signal.

3. The method for mapping a positioning reference signal according to claim 1 , wherein one set of the configuration information comprises N length Array values indicating relative resource element offsets of the first N length Array symbols in the positioning reference signal resource, respectively.

4. The method for mapping a positioning reference signal according to claim 3 , wherein if a value of N length Array is less than the number of symbols N symbol PRS in the positioning reference signal resource, the l′-th symbol in the positioning reference signal resource has a same relative resource element offset as the (l′-N length Array )-th symbol, wherein l′ is greater than or equal to N length Array , and the 0-th symbol represents a start symbol of the positioning reference signal resource.

5. The method for mapping a positioning reference signal according to claim 3 , wherein a value of N length Array length is equal to a comb size of the positioning reference signal resource.

6. The method for mapping a positioning reference signal according to claim 1 , wherein the obtaining mapping information of a positioning reference signal comprises:
obtaining at least one generation formula of a relative resource element offset corresponding to a comb structure of the positioning reference signal, wherein the generation formula is used for generating a relative resource element offset of each symbol in the positioning reference signal.

7. The method for mapping a positioning reference signal according to claim 6 , wherein a calculation parameter of the generation formula comprises at least one of the following:
comb structure of the positioning reference signal resource;
symbol index within the positioning reference signal resource; and
number of symbols in the positioning reference signal resource.

8. The method for mapping a positioning reference signal according to claim 6 , wherein the generation formula comprises:

RE
relative_offset

=

floor

(

l
′

⁢

mod
⁡
(

K
TC

)

4

)

+

floor

(

K
TC

4

)

⋆

floor

(

l
′

⁢

mod
⁡
(
4
)

2

)

+

K
TC

/
2

⋆

l
′

⁢

mod
⁡
(
2
)

wherein l′ represents the symbol index within the resource, l′=0,1. . . N symbol PRS -1, K TC represents a comb size of the resource, and RE relative_offset represents a relative resource element offset of each symbol in the positioning reference signal.

9. A method for mapping a positioning reference signal, applied to a network-side device and comprising:
transmitting mapping information of a positioning reference signal to a terminal, wherein the mapping information indicates relative resource element offsets of at least some symbols in a positioning reference signal resource, the relative resource element offset is an offset relative to a resource element offset of a first symbol of the positioning reference signal resource;
wherein the transmitting mapping information of a positioning reference signal to a terminal comprises:
transmitting a table corresponding to a comb structure of the positioning reference signal, wherein the table comprises at least one set of configuration information of relative resource element offsets.

10. The method for mapping a positioning reference signal according to claim 9 , wherein the transmitting mapping information of a positioning reference signal to a terminal further comprises:
transmitting indication information to the terminal, wherein the indication information is used for indicating the terminal to use configuration information of one of sets of relative resource element offsets in the table as the mapping information of the positioning reference signal.

11. The method for mapping a positioning reference signal according to claim 9 , wherein one set of the configuration information comprises N length Array values indicating relative resource element offsets of the first N len

Assignees

• Vivo Mobile Communication Co Ltd

Inventors

• Si Ye

Classifications

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04L5/0094

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

• H04L5/0053 Primary

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

• H04L5/0048 Primary

  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