Positioning signal processing method and apparatus

Patent metadata

Field	Value
Publication number	US-12298417-B2
Application number	US-202217960166-A
Country	US
Kind code	B2
Filing date	Oct 5, 2022
Priority date	Apr 10, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A positioning signal processing method includes receiving positioning reference signal (PRS) configuration information from a positioning device. A PRS is received as a PRS resource set. Each PRS resource set includes one or more PRSs. One access network device corresponds to one or more PRS resource sets. The positioning signal processing method further includes determining PRS time domain information based on the PRS configuration information. The time domain information includes a periodicity (P) of the PRS and a symbol length of the PRS in the P. The positioning signal processing method further includes receiving a plurality of PRSs based on the PRS time domain information.

First claim

What is claimed is:

1. A positioning signal processing method, wherein the method comprises:
receiving positioning reference signal (PRS) configuration information from a positioning device, wherein a PRS is received as a PRS resource set, each PRS resource set comprises one or more PRSs, and one access network device corresponds to one or more PRS resource sets;
determining PRS time domain information based on the PRS configuration information, wherein the time domain information comprises a periodicity (P) of the PRS and a symbol length of the PRS in the P;
receiving a plurality of PRSs based on the PRS time domain information;
wherein the determining the PRS time domain information based on the PRS configuration information comprises: determining a symbol length of a PRS in a first slot set, wherein the determining the symbol length of the PRS in the first slot set comprises:
determining a first symbol length of a PRS in each slot in the first slot set; and
determining the symbol length of the PRS in the first slot set based on the first symbol length;

configuring the symbol length of the PRS in the first slot set as the symbol length of the PRS in the P,
wherein the first slot set comprises a plurality of slots, and the plurality of slots are useable to transmit each PRS of the plurality of PRSs detected by the terminal device within a duration corresponding to the P.

2. The method according to claim 1 , wherein the determining PRS time domain information based on the PRS configuration information comprises:
P is a common sending periodicity of a plurality of PRS resource sets corresponding to a plurality of access network devices;
P is a common sending periodicity of first PRS resource sets corresponding to each access network device in the plurality of access network devices;
P is a sending periodicity of a first PRS resource set corresponding to a first access network device in the plurality of access network devices, wherein the sending periodicity of the first PRS resource set corresponding to the first access network device in the plurality of access network devices is a common divisor of sending periodicities of the first PRS resource sets corresponding to each access network device in the plurality of access network devices;
P is a greatest common divisor of a set of common divisors of the sending periodicities of the first PRS resource sets corresponding to each access network device in the plurality of access network devices;
P is a greatest common divisor of a set of common divisors of sending periodicities of a plurality of PRS resource sets corresponding to each access network device in the plurality of access network devices;
P is a least common multiple of a set of common multiples of the sending periodicities of the first PRS resource sets corresponding to each access network device in the plurality of access network devices; or
P is a least common multiple of a set of common multiples of the sending periodicities of the plurality of PRS resource sets corresponding to each access network device in the plurality of access network devices.

3. The method according to claim 1 , wherein the determining the first symbol length of the PRS in each slot in the first slot set comprises:
determining a start moment and an end moment of each slot in the first slot set; and
determining the first symbol length of the PRS in each slot in the first slot set based on the start moment and the end moment.

4. The method according to claim 3 , wherein the determining the first symbol length of the PRS in each slot in the first slot set based on the start moment and the end moment comprises:
determining the first symbol length of the PRS in each slot based on a first OFDM symbol determined at a first PRS subcarrier spacing corresponding to the start moment and a second OFDM symbol determined at a second PRS subcarrier spacing corresponding to the end moment.

5. The method according to claim 4 , wherein the first symbol length of the PRS satisfies a following formula:

K
s

=

1

2
μ

⁢

N

s
⁢
y
⁢
m
⁢
b

slot

⁢

(

ceil
⁢

(

2
μ

⁢

N

s
⁢
y
⁢
m
⁢
b

slot

⁢

T
s

e
⁢
n
⁢
d

)

-

floor
⁢

(

2
μ

⁢

N

s
⁢
y
⁢
m
⁢
b

slot

⁢

T
s

s
⁢
t
⁢
a
⁢
r
⁢
t

)

)

wherein s is a slot index in the first slot set, K s represents the first symbol length of the PRS in a slot having the slot index s, μ is a subcarrier spacing corresponding to the PRS, N symb slot is a quantity of symbols in one slot, T s start is a start moment in the sl

Assignees

• Huawei Tech Co Ltd

Inventors

• Huang Su
• Zhang Li
• Xue Jiantao
• Gao Xin

Classifications

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L27/26025

  Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003) · 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

• H04W8/24

  Transfer of terminal data · CPC title

• H04W72/0446

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