Method and apparatus for transmitting positioning-purpose reference signals, equipment and storage medium

Patent metadata

Field	Value
Publication number	US-12531694-B2
Application number	US-202017999385-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 22, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A method for transmitting positioning-purpose reference signals comprises: simultaneously transmitting, by means of N antenna ports, positioning-purpose reference signals among one or more network devices.

First claim

The invention claimed is:

1 . A method for transmitting a positioning-purpose reference signal, performed by a user equipment (UE), the method comprising:
receiving configuration parameter information of the positioning-purpose reference signal configured by at least one of a network device where a serving cell is located or a long term evolution (LTE) location management function (LMF), wherein the configuration parameter information of the positioning-purpose reference signal is configured to indicate a configuration parameter of the positioning-purpose reference signal, the configuration parameter information of the positioning-purpose reference signal comprises second signaling and triggering signaling, L antenna ports are configured in the second signaling, the triggering signaling is configured to select N antenna ports from the L antenna ports and to indicate the selected N antenna ports to the UE, wherein L is a positive integer and N is a positive integer greater than 1; selecting the N antenna ports from the L antenna ports based on the triggering signaling; and receiving simultaneously, through the N antenna ports, downlink positioning reference signals (PRSs) comprised in the positioning-purpose reference signal transmitted by one or more network devices, or transmitting simultaneously, through the N antenna ports, uplink sounding reference signals (SRSs) comprised in the positioning-purpose reference signal to the one or more network devices.

2 . The method according to claim 1 , wherein the configuration parameter of the positioning-purpose reference signal comprises one or more of the following:
a resource set identifier of the positioning-purpose reference signal; a resource identifier of the positioning-purpose reference signal; an antenna port identifier of the positioning-purpose reference signal; beam direction indication information of the positioning-purpose reference signal; a first parameter set corresponding to a time domain resource of the positioning-purpose reference signal; a second parameter set corresponding to a frequency domain resource of the positioning-purpose reference signal; a sequence identifier of the positioning-purpose reference signal; or transmit power of the positioning-purpose reference signal.

3 . The method according to claim 2 , wherein the first parameter set comprises one or more of the following parameters:
a cycle of the positioning-purpose reference signal; a starting time slot of the positioning-purpose reference signal; a starting symbol of the positioning-purpose reference signal; a number of symbols occupied by the positioning-purpose reference signal; or a number of transmission times of the positioning-purpose reference signal in one cycle of the positioning-purpose reference signal and an interval time between two transmission times of the positioning-purpose reference signal.

4 . The method according to claim 2 , wherein the second parameter set comprises one or more of the following parameters:
frequency domain reference point A where the positioning-purpose reference signal is at; a bandwidth part identifier (BWP⋅ID) of the positioning-purpose reference signal; a bandwidth of the positioning-purpose reference signal; a starting resource block location of the positioning-purpose reference signal; a comb size (Combsize) of the positioning-purpose reference signal; or resource offset (RE⋅offset) of the positioning-purpose reference signal.

5 . The method according to claim 2 , wherein the N antenna ports correspond to N positioning-purpose reference signals, and the N positioning-purpose reference signals comprise one or more of the following:
resource set identifiers of the N positioning-purpose reference signals are the same; resource identifiers of the N positioning-purpose reference signals are different; antenna port identifiers of the N positioning-purpose reference signals are different; beam directions indicated by beam direction indication information of the N positioning-purpose reference signals are different; time domain resources corresponding to the first parameter set of the N positioning-purpose reference signals are the same; frequency domain resources corresponding to the second parameter set of the N positioning-purpose reference signals are the same or different; sequence identifiers of the N positioning-purpose reference signals are the same or different; or transmit power of the N positioning-purpose reference signals is the same or different.

6 . The method according to claim 2 , wherein the N antenna ports correspond to one positioning-purpose reference signal, and the one positioning-purpose reference signal comprises one or more of the following:
N antenna port identifiers are configured for the one positioning-purpose reference signal; N beam directions are configured for the one positioning-purpose reference signal; M second parameter sets are configured for the one positioning-purpose reference signal, wherein M is a positive integer less than or equal to N; X sequence identifiers are configured for the one positioning-purpose reference signal, wherein X is a positive integer less than or equal to N; or Y transmit power is configured for the one positioning-purpose reference signal, wherein Y is a positive integer less than or equal to N.

7 . The method according to claim 2 , wherein the beam direction indication information comprises one or more of the following: a reference signal identifier corresponding to the beam direction, an antenna panel identifier, a transmission and reception point (TRP) identifier, or a cell identifier.

8 . The method according to claim 1 , wherein the configuration parameter information of the positioning-purpose reference signal comprises first signaling, and the N antenna ports are configured in the first signaling; and
the method comprises: receiving simultaneously, through the N antenna ports configured in the first signaling, the downlink PRS comprised in the positioning-purpose reference signal transmitted by the one or more network devices, or transmitting simultaneously, through the N antenna ports configured in the first signaling, the uplink SRS comprised in the positioning-purpose reference signal to the one or more network devices.

9 . The method according to claim 8 , wherein the first signaling comprises LTE positioning protocol (LPP) signaling and/or radio resource control (RRC) signaling.

10 . The method according to claim 1 , wherein the second signaling comprises LTE positioning protocol (LPP) signaling and/or radio resource control (RRC) signaling.

11 . The method according to claim 1 , wherein the triggering signaling comprises media access control (MAC) signaling and/or downlink control information (DCI) signaling;
the triggering signaling is further configured to indicate a number of transmission times or transmission time of the positioning-purpose reference signal.

12 . A user equipment (UE), comprising:
one or more processors; and a memory configured to store processor-executable instructions, wherein the processor-executable instructions, when collectively executed by the one or more processors, cause the UE to: receive configuration parameter information of the positioning-purpose reference signal configured by at least one of a network device where a serving cell is located or a long term evolution (LTE) location management function (LMF) wherein the configuration parameter information of the positioning-purpose reference signal is configured to indicate a configuration parameter of the positioning-purpose reference signal, the configuration paramete

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Li Mingju

Classifications

• H04W64/00

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

• H04W16/28

  using beam steering · CPC title

• H04W88/18

  Service support devices; Network management devices · CPC title

• H04L5/0053

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

• H04L5/005

  of common pilots, i.e. pilots destined for multiple users or terminals · CPC title