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WO2008017033A3 - Line-of-sight (los) or non-los (nlos) identification method using multipath channel statistics - Google Patents

Line-of-sight (los) or non-los (nlos) identification method using multipath channel statistics Download PDF

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Publication number
WO2008017033A3
WO2008017033A3 PCT/US2007/075084 US2007075084W WO2008017033A3 WO 2008017033 A3 WO2008017033 A3 WO 2008017033A3 US 2007075084 W US2007075084 W US 2007075084W WO 2008017033 A3 WO2008017033 A3 WO 2008017033A3
Authority
WO
WIPO (PCT)
Prior art keywords
los
nlos
sight
statistics
line
Prior art date
Application number
PCT/US2007/075084
Other languages
French (fr)
Other versions
WO2008017033A2 (en
Inventor
Ismail Guvenc
Chia-Chin Chong
Original Assignee
Ntt Docomo Inc
Ismail Guvenc
Chia-Chin Chong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/832,547 external-priority patent/US7574221B2/en
Priority claimed from US11/832,551 external-priority patent/US7577445B2/en
Application filed by Ntt Docomo Inc, Ismail Guvenc, Chia-Chin Chong filed Critical Ntt Docomo Inc
Priority to JP2009523057A priority Critical patent/JP4567093B2/en
Priority to KR1020087026803A priority patent/KR101051906B1/en
Priority to EP07813712A priority patent/EP2047694A2/en
Publication of WO2008017033A2 publication Critical patent/WO2008017033A2/en
Publication of WO2008017033A3 publication Critical patent/WO2008017033A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0218—Multipath in signal reception
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

Non-line-of-sight (NLOS) identification and mitigation are carried out in a wireless positioning system based on channel statistics derived from multipath components of a received signal. The statistics may be based on the kurtosis (210), the mean excess delay sprea (220), or the root mean square delay spread (230). The results are justified using IEEE 802.15.4a ultrawideband channel models. Amplitude and delay statistics based on the IEEE models are shown to be log-normal random variables. A joint likelihood ratio test (260) is presented for the LOS and NLOS identification.
PCT/US2007/075084 2006-08-03 2007-08-02 Line-of-sight (los) or non-los (nlos) identification method using multipath channel statistics WO2008017033A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009523057A JP4567093B2 (en) 2006-08-03 2007-08-02 Method of distinguishing line of sight (LOS) and non-LOS (NLOS) using multipath channel statistics data
KR1020087026803A KR101051906B1 (en) 2006-08-03 2007-08-02 Line or non-visible line identification method using multipath channel statistics
EP07813712A EP2047694A2 (en) 2006-08-03 2007-08-02 Line-of-sight (los) or non-los (nlos) identification method using multipath channel statistics

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US82137806P 2006-08-03 2006-08-03
US60/821,378 2006-08-03
US82212706P 2006-08-11 2006-08-11
US60/822,127 2006-08-11
US11/832,547 2007-08-01
US11/832,551 2007-08-01
US11/832,547 US7574221B2 (en) 2006-08-03 2007-08-01 Method for estimating jointly time-of-arrival of signals and terminal location
US11/832,551 US7577445B2 (en) 2006-08-03 2007-08-01 Line-of-sight (LOS) or non-LOS (NLOS) identification method using multipath channel statistics

Publications (2)

Publication Number Publication Date
WO2008017033A2 WO2008017033A2 (en) 2008-02-07
WO2008017033A3 true WO2008017033A3 (en) 2008-12-04

Family

ID=38997871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/075084 WO2008017033A2 (en) 2006-08-03 2007-08-02 Line-of-sight (los) or non-los (nlos) identification method using multipath channel statistics

Country Status (4)

Country Link
EP (1) EP2047694A2 (en)
JP (1) JP4567093B2 (en)
KR (1) KR101051906B1 (en)
WO (1) WO2008017033A2 (en)

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US7526048B2 (en) * 2005-08-11 2009-04-28 Mitsubishi Electric Research Laboratories, Inc. Energy threshold selection for UWB TOA estimation
US7574221B2 (en) * 2006-08-03 2009-08-11 Ntt Docomo, Inc. Method for estimating jointly time-of-arrival of signals and terminal location
US7956808B2 (en) * 2008-12-30 2011-06-07 Trueposition, Inc. Method for position estimation using generalized error distributions
US9432882B2 (en) * 2013-01-29 2016-08-30 Qualcomm Incorporated System and method for deploying an RTT-based indoor positioning system
CN106507695B (en) * 2014-07-03 2019-11-22 Lg电子株式会社 New uplink reference signals transmission method and device in the wireless access system for supporting millimeter wave
JP6399512B2 (en) * 2014-10-20 2018-10-03 国立大学法人東京工業大学 Source estimation method and source estimation apparatus using the same
KR102412960B1 (en) 2016-01-25 2022-06-27 삼성전자주식회사 The apparatus and method for determining properties of channel
JP2016145836A (en) * 2016-03-23 2016-08-12 インテル コーポレイション Mechanisms implemented using geodetic triangulation to determine global positioning of computing devices
US10939401B2 (en) 2018-07-09 2021-03-02 Qualcomm Incorporated Round trip time estimation based on a timing advance applied to a timing response
EP3840490B1 (en) 2018-08-14 2025-07-30 Robert Bosch GmbH Method and apparatus for detecting type of signal propagation
US12245184B2 (en) * 2019-12-12 2025-03-04 Nokia Technologies Oy User equipment (UE)-based positioning non-line of sight (NLOS) error mitigation
EP3860006A1 (en) * 2020-01-29 2021-08-04 Nokia Technologies Oy Path discrimination
CN113225667B (en) * 2020-02-05 2022-03-29 大唐移动通信设备有限公司 Method and device for eliminating non-direct path of arrival time measurement value and terminal
CN111551180B (en) * 2020-05-22 2022-08-26 桂林电子科技大学 Smart phone indoor positioning system and method capable of identifying LOS/NLOS acoustic signals
CN115622839B (en) * 2021-07-12 2025-01-24 大唐移动通信设备有限公司 A method, device and electronic device for identifying channel propagation status
KR20240051672A (en) * 2022-10-13 2024-04-22 삼성전자주식회사 Method and apparatus for adjusting ranging area using uwb(ultra-wideband) signal
WO2024237639A1 (en) * 2023-05-15 2024-11-21 엘지전자 주식회사 Nlos-based positioning method and apparatus
CN119575441B (en) * 2025-02-08 2025-04-22 肇庆市金鹏实业有限公司 GPS positioning and 4G communication service system of Internet of things equipment
CN119805429B (en) * 2025-03-14 2025-06-03 中国石油大学(华东) UWB-based high-precision anti-interference ranging method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5644572A (en) * 1995-10-03 1997-07-01 Motorola, Inc. Method and apparatus for approximating propagation delay for use in transmission compensation to orbiting satellites
US7065368B2 (en) * 2002-12-30 2006-06-20 Kt Corporation Method for correcting NLOS error in wireless positioning system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000048709A (en) * 1996-09-27 2000-07-25 루트거스 유니버시티 Method and system for mobile location estimation
CN1159935C (en) * 2001-03-30 2004-07-28 华为技术有限公司 A method and device for improving positioning accuracy of a cellular mobile station in an urban environment
CN1173509C (en) * 2001-12-30 2004-10-27 华为技术有限公司 Identification Method of Visible and Invisible Channels in CDMA Mobile Communication System
KR100876800B1 (en) * 2002-08-14 2009-01-07 삼성전자주식회사 Apparatus and method for estimating position of mobile terminal
JP2006023267A (en) 2004-06-09 2006-01-26 Ntt Docomo Inc Position measuring apparatus and position measuring method using multipath delay component
JP4495249B2 (en) * 2006-08-03 2010-06-30 株式会社エヌ・ティ・ティ・ドコモ Weighted least squares positioning method using multipath channel statistics for non-line-of-sight mitigation
US7574221B2 (en) * 2006-08-03 2009-08-11 Ntt Docomo, Inc. Method for estimating jointly time-of-arrival of signals and terminal location

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5644572A (en) * 1995-10-03 1997-07-01 Motorola, Inc. Method and apparatus for approximating propagation delay for use in transmission compensation to orbiting satellites
US7065368B2 (en) * 2002-12-30 2006-06-20 Kt Corporation Method for correcting NLOS error in wireless positioning system

Also Published As

Publication number Publication date
JP2009545934A (en) 2009-12-24
KR20090009223A (en) 2009-01-22
EP2047694A2 (en) 2009-04-15
JP4567093B2 (en) 2010-10-20
WO2008017033A2 (en) 2008-02-07
KR101051906B1 (en) 2011-07-26

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