Method and apparatus for transmitting downlink positioning reference signal, and storage medium

Patent metadata

Field	Value
Publication number	US-12531683-B2
Application number	US-202018000194-A
Country	US
Kind code	B2
Filing date	Jun 2, 2020
Priority date	Jun 2, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A method for transmitting a downlink positioning reference signal is performed by a terminal, and includes: receiving trigger information of the downlink positioning reference signal sent by a first network device, wherein the trigger information is configured to indicate a wireless resource position used by a specified number of transmissions of the downlink positioning reference signal; and receiving, at the wireless resource position indicated by the trigger information, the specified number of transmissions of the downlink positioning reference signal from a second network device.

First claim

What is claimed is:

1 . A method for transmitting a downlink positioning reference signal, performed by a terminal, comprising:
receiving trigger information of the downlink positioning reference signal sent by a first network device, wherein the trigger information is configured to indicate a wireless resource position used by a specified number of transmissions of the downlink positioning reference signal; and receiving, at the wireless resource position indicated by the trigger information, the specified number of transmissions of the downlink positioning reference signal from a second network device; wherein the trigger information is configured to indicate a first configuration parameter, and the first configuration parameter comprises at least one of: a first frequency domain parameter, a first time domain parameter, and a first space domain parameter; the first frequency domain parameter comprises at least one of: a frequency domain reference point, a bandwidth, a bandwidth part (BWP), a sub-carrier spacing (SCS), a start physical resource block (PRB), a resource element offset, and a combsize; the first time domain parameter comprises at least one of: a start time slot position, a start symbol position, a number of occupied symbols, a number of transmissions and a transmitting time interval; and the first space domain parameter comprises at least one of: an antenna port index and beam information; wherein the trigger information comprises a parameter indication identifier, and the method further comprises: obtaining the first configuration parameter by querying a parameter table based on the parameter indication identifier, wherein the parameter table comprises a correspondence between the parameter indication identifier and the first configuration parameter; and determining the wireless resource position indicated by the trigger information based on the first configuration parameter; wherein determining the wireless resource position indicated by the trigger information based on the first configuration parameter comprises: determining, based on the first configuration parameter and a second configuration parameter, the wireless resource position indicated by the trigger information; wherein the second configuration parameter comprises at least one of: a second frequency domain parameter, a second time domain parameter, and a second space domain parameter; the second frequency domain parameter comprises any parameter other than the first frequency domain parameter in the frequency domain reference point, the bandwidth, the BWP, the SCS, the start PRB, the resource element offset or the combsize; the second time domain parameter comprises any parameter other than the first time domain parameter in the start time slot position, the start symbol position, the number of occupied symbols, the number of transmissions or the transmitting time interval; and the second space domain parameter comprises any parameter other than the first space domain parameter in the antenna port index or the beam information.

2 . The method of claim 1 , wherein the trigger information of the downlink positioning reference signal is sent via at least one of:
a media access control (MAC) signaling, and downlink control information (DCI).

3 . The method of claim 1 , further comprising at least one of:
receiving the parameter table sent by the first network device via a radio resource control (RRC) signaling or a system information block (SIB); and receiving the parameter table sent by a location management function entity via a long term evolution positioning protocol (LPP) message.

4 . The method of claim 1 , further comprising at least one of:
receiving the second configuration parameter sent by the first network device via a RRC signaling or a SIB; and receiving the second configuration parameter sent by a location management function entity via an LPP message.

5 . The method of claim 1 , further comprising:
reporting terminal information of the terminal to the first network device, wherein the terminal information comprises at least one of: a terminal type, a number of antenna ports supported by the terminal, a movement speed of the terminal and a distance between the terminal and the second network device.

6 . A method for transmitting a downlink positioning reference signal, performed by a first network device, comprising:
configuring trigger information of the downlink positioning reference signal for a terminal, wherein the trigger information is configured to indicate a wireless resource position used by a specified number of transmissions of the downlink positioning reference signal; and sending the trigger information to the terminal; wherein the trigger information is configured to indicate a first configuration parameter, and the first configuration parameter comprises at least one of: a first frequency domain parameter, a first time domain parameter, and a first space domain parameter; the first frequency domain parameter comprises at least one of: a frequency domain reference point, a bandwidth, a bandwidth part (BWP), a sub-carrier spacing (SCS), a start physical resource block (PRB), a resource element offset, and a combsize; the first time domain parameter comprises at least one of: a start time slot position, a start symbol position, a number of occupied symbols, a number of transmissions and a transmitting time interval; and the first space domain parameter comprises at least one of: an antenna port index and beam information; wherein the trigger information comprises a parameter indication identifier, and the method further comprises: obtaining the first configuration parameter by querying a parameter table based on the parameter indication identifier, wherein the parameter table comprises a correspondence between the parameter indication identifier and the first configuration parameter; and determining the wireless resource position indicated by the trigger information based on the first configuration parameter; wherein determining the wireless resource position indicated by the trigger information based on the first configuration parameter comprises: determining, based on the first configuration parameter and a second configuration parameter, the wireless resource position indicated by the trigger information; wherein the second configuration parameter comprises at least one of: a second frequency domain parameter, a second time domain parameter, and a second space domain parameter; the second frequency domain parameter comprises any parameter other than the first frequency domain parameter in the frequency domain reference point, the bandwidth, the BWP, the SCS, the start PRB, the resource element offset or the combsize; the second time domain parameter comprises any parameter other than the first time domain parameter in the start time slot position, the start symbol position, the number of occupied symbols, the number of transmissions or the transmitting time interval; and the second space domain parameter comprises any parameter other than the first space domain parameter in the antenna port index or the beam information.

7 . The method of claim 6 , wherein sending the trigger information to the terminal comprises:
sending the trigger information to the terminal via at least one of: a media access control (MAC) signaling, and downlink control information (DCI).

8 . The method of claim 6 , further comprising at least one of:
sending, at the wireless resource position indicated by the trigger information, the specified number of transmissions of the downlink positioning reference signal to the terminal; and sending the trigger information to a second network device to instruct the sec

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Li Mingju

Classifications

• H04W64/00 Primary

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

• G01S5/0236

  Assistance data, e.g. base station almanac · 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

• H04W72/0453

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

• H04W72/0446

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