NON-LINE OF SIGHT ELIMINATION METHOD AND APPARATUS FOR TIME OF ARRIVAL MEASUREMENT VALUE, AND TERMINAL - DATANG MOBILE COMMUNICATIONS EQUIPMENT CO LTD

Title:

NON-LINE OF SIGHT ELIMINATION METHOD AND APPARATUS FOR TIME OF ARRIVAL MEASUREMENT VALUE, AND TERMINAL

Document Type and Number:

WIPO Patent Application WO/2021/155714

Kind Code:

A1

Abstract:

Disclosed in the embodiments of the present application are a non-line of sight (NLOS) elimination method and apparatus for a time of arrival (TOA) measurement value, and a terminal. The method comprises: performing Gaussian mixture modeling on the probability density of the TOA measurement value of each base station arriving at a terminal UE, and performing selection and NLOS identification on the TOA measurement value subsequent to performing Gaussian mixture modeling, so as to obtain an identification tag, wherein the identification tag is used for indicating whether the selected TOA measurement value is NLOS; and correcting the selected TOA measurement value according to the identification tag, so as to eliminate an error caused by NLOS in the selected TOA measurement value. The present invention improves the positioning accuracy of a user by performing Gaussian mixture modeling and selection on the probability density of each TOA measurement value, accurately finding the TOA measurement value belonging to LOS in the case that it is ensured that the LOS is aliased with the NLOS, and correcting the selected TOA measurement value to eliminate the error caused by the NLOS in the selected TOA measurement value.

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Inventors:

ZHANG ZHENYU (CN)
REN BIN (CN)
DA REN (CN)
LI GANG (CN)
YU DAFEI (CN)
ZHENG ZHANQI (CN)
SUN SHAOHUI (CN)

Application Number:

PCT/CN2020/136564

Publication Date:

August 12, 2021

Filing Date:

December 15, 2020

Export Citation:

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Assignee:

DATANG MOBILE COMMUNICATIONS EQUIPMENT CO LTD (CN)

International Classes:

H04W64/00

Foreign References:

CN102547827A	2012-07-04
CN101282577A	2008-10-08
CN106102161A	2016-11-09
CN108337197A	2018-07-27
US20160327628A1	2016-11-10

Other References:

ERICSSON: "Evaluations of Richer UE feedback for OTDOA", 3GPP TSG RAN WG1 MEETING #82, R1-154763, 30 August 2015 (2015-08-30), XP051021037
See also references of EP 4102900A4

Attorney, Agent or Firm:

CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)

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