IN2014CN03575A - - Google Patents

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Publication number
IN2014CN03575A
IN2014CN03575A IN3575CHN2014A IN2014CN03575A IN 2014CN03575 A IN2014CN03575 A IN 2014CN03575A IN 3575CHN2014 A IN3575CHN2014 A IN 3575CHN2014A IN 2014CN03575 A IN2014CN03575 A IN 2014CN03575A
Authority
IN
India
Prior art keywords
correction factor
rtt
acknowledgement
estimate
compensate
Prior art date
Application number
Other languages
English (en)
Inventor
Qifan Chen
Kai Shi
Ning Zhang
Original Assignee
Qualcomm Inc
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
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014CN03575A publication Critical patent/IN2014CN03575A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
IN3575CHN2014 2011-11-15 2012-11-09 IN2014CN03575A (enExample)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/297,202 US8787191B2 (en) 2011-11-15 2011-11-15 Method and apparatus for determining distance in a Wi-Fi network
PCT/US2012/064524 WO2013074424A1 (en) 2011-11-15 2012-11-09 Method and apparatus for determining distance in a wi-fi network

Publications (1)

Publication Number Publication Date
IN2014CN03575A true IN2014CN03575A (enExample) 2015-10-09

Family

ID=47222327

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3575CHN2014 IN2014CN03575A (enExample) 2011-11-15 2012-11-09

Country Status (7)

Country Link
US (2) US8787191B2 (enExample)
EP (1) EP2781129B1 (enExample)
JP (1) JP5731079B2 (enExample)
KR (1) KR101521564B1 (enExample)
CN (1) CN103947268B (enExample)
IN (1) IN2014CN03575A (enExample)
WO (1) WO2013074424A1 (enExample)

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US8892127B2 (en) 2008-11-21 2014-11-18 Qualcomm Incorporated Wireless-based positioning adjustments using a motion sensor
US20100135178A1 (en) 2008-11-21 2010-06-03 Qualcomm Incorporated Wireless position determination using adjusted round trip time measurements
US9645225B2 (en) 2008-11-21 2017-05-09 Qualcomm Incorporated Network-centric determination of node processing delay
US9125153B2 (en) 2008-11-25 2015-09-01 Qualcomm Incorporated Method and apparatus for two-way ranging
US8768344B2 (en) 2008-12-22 2014-07-01 Qualcomm Incorporated Post-deployment calibration for wireless position determination
US8781492B2 (en) 2010-04-30 2014-07-15 Qualcomm Incorporated Device for round trip time measurements
US8787191B2 (en) 2011-11-15 2014-07-22 Qualcomm Incorporated Method and apparatus for determining distance in a Wi-Fi network
US9154904B2 (en) * 2012-11-12 2015-10-06 Tata Consultancy Services Limited Method and system for accurate straight line distance estimation between two communication devices
JP2014165551A (ja) * 2013-02-21 2014-09-08 Fujitsu Ltd 通信装置、通信方法、プログラム、及び、通信システム
US9191908B2 (en) * 2013-03-05 2015-11-17 Qualcomm Incorporated Reducing impact of clock drift in wireless devices
US20140269400A1 (en) * 2013-03-14 2014-09-18 Qualcomm Incorporated Broadcasting short interframe space information for location purposes
US9900858B2 (en) * 2013-05-30 2018-02-20 Intel Corporation Apparatus, system and method of estimating a location of a mobile device
US9661603B2 (en) 2013-08-30 2017-05-23 Qualcomm Incorporated Passive positioning utilizing beacon neighbor reports
US9445227B2 (en) 2013-08-30 2016-09-13 Qualcomm Incorporated Passive positioning utilizing round trip time information
US9532328B2 (en) * 2013-09-09 2016-12-27 Qualcomm Incorporated Methods and apparatuses for improving quality of positioning
US20150296552A1 (en) * 2014-04-09 2015-10-15 Qualcomm Incorporated Wireless docking/undocking using fine time measurement
US9907044B2 (en) * 2014-09-15 2018-02-27 Qualcomm Incorporated IEEE 802.11 enhancements for high efficiency positioning
US9824481B2 (en) 2014-12-30 2017-11-21 Qualcomm Incorporated Maintaining heatmaps using tagged visual data
US20160188540A1 (en) * 2014-12-30 2016-06-30 Qualcomm Incorporated Tagging visual data with wireless signal information
US10582105B2 (en) 2014-12-30 2020-03-03 Qualcomm Incorporated Changing camera parameters based on wireless signal information
US10264396B2 (en) * 2015-01-15 2019-04-16 Mediatek Inc. Method of distance measurement between wireless communication devices in wireless communication system
CN104602319A (zh) * 2015-01-30 2015-05-06 海信集团有限公司 一种控制无线接入设备移动的方法与装置
US9801019B2 (en) 2015-03-16 2017-10-24 Qualcomm Incorporated Adaptive triggering of RTT ranging for enhanced position accuracy
US9706356B2 (en) * 2015-03-25 2017-07-11 Htc Corporation Positioning system and method
US20160352605A1 (en) * 2015-05-29 2016-12-01 Qualcomm Incorporated Systems and methods for distance bounding to an authenticated device
CN106443648B (zh) * 2015-08-13 2019-06-21 株式会社理光 判断电子装置接近的方法与装置
US20170127225A1 (en) * 2015-10-29 2017-05-04 Qualcomm Incorporated Systems and methods for distance bounding using near field communication
US10440574B2 (en) * 2016-06-12 2019-10-08 Apple Inc. Unlocking a device
JP7374408B2 (ja) * 2017-08-31 2023-11-07 株式会社村田製作所 位置推定システム
CN110622024A (zh) * 2018-03-02 2019-12-27 深圳市汇顶科技股份有限公司 室内定位方法、装置和设备
US10659941B2 (en) 2018-03-13 2020-05-19 Cypress Semiconductor Corporation Communicating packets in a mesh network
US10939401B2 (en) * 2018-07-09 2021-03-02 Qualcomm Incorporated Round trip time estimation based on a timing advance applied to a timing response
US11778511B2 (en) 2019-09-18 2023-10-03 Kabushiki Kaisha Toshiba Transmission parameter probing and searching for agile link quality adaptation
US11172388B2 (en) * 2019-09-18 2021-11-09 Kabushiki Kaisha Toshiba Link quality awareness for uplink transmissions from nodes to gateways
JP7476518B2 (ja) * 2019-11-13 2024-05-01 セイコーエプソン株式会社 無線通信システム、第２処理装置
KR20220012755A (ko) 2020-07-23 2022-02-04 삼성전자주식회사 통신 수행 방법 및 장치
EP4254990A1 (en) * 2020-11-30 2023-10-04 Beijing Xiaomi Mobile Software Co., Ltd. Location determination method and apparatus, and communication device

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CN100544219C (zh) * 2001-06-11 2009-09-23 高通股份有限公司 用于在电信设备定位系统中校正多径误差的系统
KR101031205B1 (ko) 2005-11-07 2011-04-27 퀄컴 인코포레이티드 Ｗｌａｎ 네트워크 및 무선 네트워크에 대한 위치측정
US7643430B2 (en) * 2005-11-30 2010-01-05 Cisco Technology, Inc. Methods and apparatus for determining reverse path delay
US20090011713A1 (en) 2007-03-28 2009-01-08 Proximetry, Inc. Systems and methods for distance measurement in wireless networks
WO2008147046A1 (en) 2007-05-25 2008-12-04 Lg Electronics Inc. Management procedure in wireless communication system and station supporting management procedure
US8321741B2 (en) * 2008-05-05 2012-11-27 Industrial Technology Research Institute System and apparatus for providing an adaptive control mechanism for wireless communications
US20100135178A1 (en) 2008-11-21 2010-06-03 Qualcomm Incorporated Wireless position determination using adjusted round trip time measurements
US8165150B2 (en) 2008-12-17 2012-04-24 Avaya Inc. Method and system for wireless LAN-based indoor position location
US8233457B1 (en) 2009-09-03 2012-07-31 Qualcomm Atheros, Inc. Synchronization-free station locator in wireless network
JP5430481B2 (ja) * 2010-04-12 2014-02-26 三菱電機株式会社 ゲートウエイおよび端末
US8781492B2 (en) 2010-04-30 2014-07-15 Qualcomm Incorporated Device for round trip time measurements
US9057771B2 (en) * 2011-04-25 2015-06-16 Disney Enterprises, Inc. Carrier sense-based ranging
US8787191B2 (en) * 2011-11-15 2014-07-22 Qualcomm Incorporated Method and apparatus for determining distance in a Wi-Fi network

Also Published As

Publication number Publication date
US20130121173A1 (en) 2013-05-16
CN103947268A (zh) 2014-07-23
CN103947268B (zh) 2018-03-27
KR101521564B1 (ko) 2015-05-19
US20140313922A1 (en) 2014-10-23
EP2781129A1 (en) 2014-09-24
US8787191B2 (en) 2014-07-22
US9143967B2 (en) 2015-09-22
WO2013074424A1 (en) 2013-05-23
EP2781129B1 (en) 2018-05-16
JP2015503092A (ja) 2015-01-29
JP5731079B2 (ja) 2015-06-10
KR20140093994A (ko) 2014-07-29
WO2013074424A4 (en) 2013-07-11

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