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BR9812406A - Método e aparelho para corrigir um tempo de retardo medido de circulo fechado em um sistema de comunicação sem fio - Google Patents

Método e aparelho para corrigir um tempo de retardo medido de circulo fechado em um sistema de comunicação sem fio

Info

Publication number
BR9812406A
BR9812406A BR9812406-4A BR9812406A BR9812406A BR 9812406 A BR9812406 A BR 9812406A BR 9812406 A BR9812406 A BR 9812406A BR 9812406 A BR9812406 A BR 9812406A
Authority
BR
Brazil
Prior art keywords
communication system
correcting
wireless communication
closed loop
delay time
Prior art date
Application number
BR9812406-4A
Other languages
English (en)
Inventor
Walter J Rozanski Jr
Eric R Schorman
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of BR9812406A publication Critical patent/BR9812406A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/009—Closed loop measurements
    • 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
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/364—Delay profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/006—Synchronisation arrangements determining timing error of reception due to propagation delay using known positions of transmitter and receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

<B>MéTODO E APARELHO PARA CORRIGIR UM TEMPO DE RETARDO MEDIDO DE CIRCUITO FECHADO EM UM SISTEMA DE COMUNICAçãO SEM FIO<D> A correção de um retardo de circuito fechado em um sistema de comunicação (100) ocorre pelo recebimento de um sinal de comunicação uplink (119) por trajetórias de sinal de comunicação uplink (130-132) e determinação de qual raio foi utilizado por uma unidade remota (113) no alinhamento de tempo do sinal de comunicação uplink (119). Em particular, uma estação de base (101) analisa o sinal de comunicação uplink (119) e prevê o raio que a unidade remota (113) utilizou para alinhamento de tempo. Quando a estação de base (101) tiver determinado o raio que a unidade remota (113) utilizou no alinhamento de tempo, a estação de base (101) corrige qualquer cálculo de retardo de circuito fechado de acordo.
BR9812406-4A 1997-09-30 1998-09-28 Método e aparelho para corrigir um tempo de retardo medido de circulo fechado em um sistema de comunicação sem fio BR9812406A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/941,783 US5974057A (en) 1997-09-30 1997-09-30 Method and apparatus for correcting a measured round-trip delay time in a wireless communication system
PCT/US1998/020291 WO1999017481A1 (en) 1997-09-30 1998-09-28 Method and apparatus for correcting a measured round-trip delay time in a wireless communication system

Publications (1)

Publication Number Publication Date
BR9812406A true BR9812406A (pt) 2000-09-19

Family

ID=25477058

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9812406-4A BR9812406A (pt) 1997-09-30 1998-09-28 Método e aparelho para corrigir um tempo de retardo medido de circulo fechado em um sistema de comunicação sem fio

Country Status (9)

Country Link
US (1) US5974057A (pt)
EP (1) EP1021880A1 (pt)
JP (1) JP2001518740A (pt)
KR (1) KR100365874B1 (pt)
CN (1) CN1272268A (pt)
BR (1) BR9812406A (pt)
CA (1) CA2304649A1 (pt)
IL (1) IL134963A0 (pt)
WO (1) WO1999017481A1 (pt)

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KR100299133B1 (ko) * 1999-07-05 2001-11-01 윤종용 이동통신시스템에서 휴대용 무선 전화기 가입자를 위한 홈 존서비스 방법
US6647246B1 (en) * 2000-01-10 2003-11-11 Industrial Technology Research Institute Apparatus and method of synchronization using delay measurements
US6560462B1 (en) * 2000-03-07 2003-05-06 Samsung Electronics Co., Ltd. System and method for determining the location of a mobile station in a wireless network
US6600777B1 (en) * 2000-09-29 2003-07-29 Qualcomm, Incorporated Assignment and deassignment of CDMA second finger
GB2394628B (en) * 2002-10-25 2005-10-19 Siemens Plc A method of determining a timing offset between a first clock and a second clock in a communications network
KR20040044241A (ko) * 2002-11-20 2004-05-28 엘지전자 주식회사 라운드 트립 지연을 이용한 시스템 클럭 편차 보정 장치및 방법
CN100359956C (zh) * 2003-02-09 2008-01-02 中兴通讯股份有限公司 无线通信系统中实现同步与测距的方法及其实施装置
US7315275B2 (en) * 2003-07-03 2008-01-01 Navcom Technology, Inc. Positioning system with intentional multi-path signal
CN100364250C (zh) * 2004-09-23 2008-01-23 华为技术有限公司 用于移动通信中的延迟补偿方法及其系统
FR2880508A1 (fr) * 2005-01-03 2006-07-07 France Telecom Procede de mesure d'une distance entre deux equipements de radiocommunication, et equipement adapte pour mettre en oeuvre un tel procede
US8798638B2 (en) * 2005-07-20 2014-08-05 Qualcomm Incorporated Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections
US20070070973A1 (en) * 2005-09-29 2007-03-29 Kazmi Zaigham A Method and system for achieving alignment between a centralized base station controller (CBSC) and a base transceiver site (BTS) in a network
US7352712B2 (en) * 2005-10-07 2008-04-01 Symbol Technologies, Inc. System and method for detecting a delay in a computer network
WO2007082015A2 (en) * 2006-01-11 2007-07-19 Fisher-Rosemount Systems, Inc. Control of low power wireless networks for power conservation
CN101039154B (zh) * 2006-03-15 2010-08-25 联芯科技有限公司 一种获取用户终端收发通道传输时间的方法
CN100455129C (zh) * 2006-07-31 2009-01-21 华为技术有限公司 多扇区小区对rtt测量值进行校正的方法及系统
JP2008267973A (ja) * 2007-04-19 2008-11-06 Ntt Docomo Inc 測位システム、移動通信端末、測位方法、測位サーバ、測位用ｉｃチップ、及び測位プログラム
EP2112775B1 (en) * 2008-04-25 2018-06-06 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for compensation for propagation delay in a wireless communication system
CN101739731B (zh) * 2009-11-20 2011-08-17 佛山市艾科电子工程有限公司 分布式各计量点的时间计量方法及分布式时间计量系统
WO2012129723A1 (en) * 2011-03-30 2012-10-04 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements in a wireless communication system
US9332523B2 (en) * 2013-05-10 2016-05-03 Qualcomm, Incorporated Systems and methods of offloaded positioning for determining location of WLAN nodes
US9924480B2 (en) * 2015-07-24 2018-03-20 Samsung Electronics Co., Ltd Apparatus and method for calibrating delay between signal paths
CN105137331B (zh) * 2015-07-24 2017-11-17 北京华峰测控技术有限公司 一种集成电路测试系统数字通道信号对齐方法及装置
US10939401B2 (en) 2018-07-09 2021-03-02 Qualcomm Incorporated Round trip time estimation based on a timing advance applied to a timing response

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58111784A (ja) * 1981-12-25 1983-07-02 Nec Corp 時刻の遠隔較正方式
US5280629A (en) * 1991-12-06 1994-01-18 Motorola, Inc. Technique for measuring channel delay
EP0565507A3 (en) * 1992-04-10 1994-11-30 Ericsson Ge Mobile Communicat Power control for random access call set-up in a mobile telephone system

Also Published As

Publication number Publication date
US5974057A (en) 1999-10-26
KR20010024354A (ko) 2001-03-26
IL134963A0 (en) 2001-05-20
EP1021880A1 (en) 2000-07-26
KR100365874B1 (ko) 2002-12-26
JP2001518740A (ja) 2001-10-16
CA2304649A1 (en) 1999-04-08
CN1272268A (zh) 2000-11-01
WO1999017481A1 (en) 1999-04-08

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4A, 5A, 6A, 7A, 8A E 9A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1913 DE 04/09/2007.