CA2302404A1 - Mobile station assisted timing synchronization in a cdma communication system - Google Patents

Mobile station assisted timing synchronization in a cdma communication system Download PDF

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Publication number
CA2302404A1
CA2302404A1 CA002302404A CA2302404A CA2302404A1 CA 2302404 A1 CA2302404 A1 CA 2302404A1 CA 002302404 A CA002302404 A CA 002302404A CA 2302404 A CA2302404 A CA 2302404A CA 2302404 A1 CA2302404 A1 CA 2302404A1
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CA
Canada
Prior art keywords
base station
time
signal
mobile station
station
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002302404A
Other languages
French (fr)
Other versions
CA2302404C (en
Inventor
Charles E. Wheatley, Iii
Edward G. Tiedemann, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002614565A priority Critical patent/CA2614565A1/en
Priority to CA2614566A priority patent/CA2614566C/en
Priority to CA002614568A priority patent/CA2614568A1/en
Publication of CA2302404A1 publication Critical patent/CA2302404A1/en
Application granted granted Critical
Publication of CA2302404C publication Critical patent/CA2302404C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70753—Partial phase search
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • 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
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70702—Intercell-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Abstract

In the present invention, the slave base station (64) attains synchronization with the reference base station (62) through messages transmitted from and received by a mobile station (60) in the soft handoff region between the reference base station (62) and the slave base station (64). First, the round trip delay between the mobile station (60) and the reference base station (62) is measured by the reference base station (62).
Once the mobile station (60) acquires the signal from the slave base station (64), it measures and reports the difference between the amount of time it takes a signal to travel from the reference base station (62) to it and the amount of time it takes a signal to travel from the slave base station (64) to it. The last measurement necessary is a measurement by the slave base station (64) of the time difference between the time it received the reverse link signal from the mobile (60) and station the time it transmitted a signal to the mobile station. A series of computations described in detail herein are performed upon the measured time values to determine the time difference between the slave base station (64) and an adjustment of the slave base station (64) timing is performed in accordance therewith.
CA002302404A 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system Expired - Lifetime CA2302404C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002614565A CA2614565A1 (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system
CA2614566A CA2614566C (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system
CA002614568A CA2614568A1 (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/933,888 1997-09-19
US08/933,888 US5872774A (en) 1997-09-19 1997-09-19 Mobile station assisted timing synchronization in a CDMA communication system
PCT/US1998/019467 WO1999016183A2 (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system

Related Child Applications (3)

Application Number Title Priority Date Filing Date
CA2614566A Division CA2614566C (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system
CA002614568A Division CA2614568A1 (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system
CA002614565A Division CA2614565A1 (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system

Publications (2)

Publication Number Publication Date
CA2302404A1 true CA2302404A1 (en) 1999-04-01
CA2302404C CA2302404C (en) 2009-06-09

Family

ID=25464653

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002302404A Expired - Lifetime CA2302404C (en) 1997-09-19 1998-09-18 Mobile station assisted timing synchronization in a cdma communication system

Country Status (23)

Country Link
US (3) US5872774A (en)
EP (1) EP1016225B1 (en)
JP (1) JP4159742B2 (en)
KR (1) KR100633189B1 (en)
CN (1) CN1130032C (en)
AR (1) AR013508A1 (en)
AT (1) ATE457101T1 (en)
AU (1) AU741092B2 (en)
BR (1) BR9812471B1 (en)
CA (1) CA2302404C (en)
DE (1) DE69841489D1 (en)
ES (1) ES2337637T3 (en)
HK (1) HK1029681A1 (en)
HU (1) HU229360B1 (en)
ID (1) ID25527A (en)
IL (1) IL135071A0 (en)
MX (1) MXPA00002753A (en)
NO (1) NO318829B1 (en)
NZ (1) NZ503071A (en)
PL (1) PL193025B1 (en)
RU (2) RU2231224C2 (en)
TW (1) TW444475B (en)
WO (1) WO1999016183A2 (en)

Families Citing this family (174)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7046682B2 (en) * 1997-02-12 2006-05-16 Elster Electricity, Llc. Network-enabled, extensible metering system
US6396839B1 (en) * 1997-02-12 2002-05-28 Abb Automation Inc. Remote access to electronic meters using a TCP/IP protocol suite
US6628630B1 (en) * 1997-04-15 2003-09-30 Matsushita Electric Industrial Co., Ltd. Spread spectrum communication method
JP3693083B2 (en) * 1997-07-02 2005-09-07 ソニー株式会社 Receiving device and receiving method
US6185199B1 (en) * 1997-07-23 2001-02-06 Qualcomm Inc. Method and apparatus for data transmission using time gated frequency division duplexing
US6201802B1 (en) * 1997-08-29 2001-03-13 Qualcomm Inc. Method and apparatus for analyzing base station timing
US5872774A (en) * 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
JPH11146444A (en) * 1997-11-11 1999-05-28 Nec Corp Synchronization establishing system for mobile communication base station network
JP3043699B2 (en) * 1997-11-28 2000-05-22 埼玉日本電気株式会社 TDMA-TDD base station synchronizer
KR100249045B1 (en) * 1997-12-29 2000-03-15 김영환 Method for controlling window search size in base station
US6018667A (en) * 1998-01-20 2000-01-25 Motorola, Inc. Method and apparatus for transmitting information regarding the synchronization status of a base station
US6526039B1 (en) * 1998-02-12 2003-02-25 Telefonaktiebolaget Lm Ericsson Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system
KR100407355B1 (en) * 1998-02-14 2004-04-03 삼성전자주식회사 Apparatus and method for aligning time of reverse link in mobile communication system
US6208871B1 (en) * 1998-02-27 2001-03-27 Motorola, Inc. Method and apparatus for providing a time adjustment to a wireless communication system
US6094562A (en) * 1998-04-07 2000-07-25 Lucent Technologies Inc. Timing compensation for distant base station antennas in telecommunication systems
JP4267092B2 (en) * 1998-07-07 2009-05-27 富士通株式会社 Time synchronization method
US6185429B1 (en) * 1998-07-31 2001-02-06 Motorola, Inc. Method and apparatus for performing a time synchronization of a base site
US6304759B1 (en) * 1998-08-31 2001-10-16 Lucent Technologies Inc. Method for extending the range of a wireless communication system
US6389034B1 (en) * 1998-09-04 2002-05-14 Nortel Networks Limited System for providing stream based and packet based services
US6765953B1 (en) * 1998-09-09 2004-07-20 Qualcomm Incorporated User terminal parallel searcher
US6125137A (en) * 1998-09-11 2000-09-26 Motorola, Inc. Apparatus and method for performing a signal search in a coherent wireless communication system
US6700902B1 (en) 1998-10-19 2004-03-02 Elster Electricity, Llc Method and system for improving wireless data packet delivery
US6590881B1 (en) * 1998-12-04 2003-07-08 Qualcomm, Incorporated Method and apparatus for providing wireless communication system synchronization
KR20000045213A (en) 1998-12-30 2000-07-15 김영환 Method of operating base station for compensating path delay between cdma mobile communication base station and mobile phone
DE19906293C2 (en) * 1999-02-15 2000-11-30 Siemens Ag Method for the detection of pilot tones
JP3658234B2 (en) * 1999-03-17 2005-06-08 富士通株式会社 Delay compensation system for wireless telephone system
US6687285B1 (en) * 1999-03-19 2004-02-03 Qualcomm Incorporated Method and apparatus for supervising the performance of a quick paging channel in a dual event slotted paging system
US6456606B1 (en) * 1999-03-24 2002-09-24 Qualcomm Incorporated Handoff control in an asynchronous CDMA system
US6553230B1 (en) * 1999-04-16 2003-04-22 Nortel Networks Limited Method and apparatus for performing soft handoff between cells of large differing radii
US6704348B2 (en) * 2001-05-18 2004-03-09 Global Locate, Inc. Method and apparatus for computing signal correlation at multiple resolutions
JP4354041B2 (en) * 1999-04-30 2009-10-28 富士通株式会社 Wireless terminal device
JP3322240B2 (en) * 1999-05-10 2002-09-09 日本電気株式会社 CDMA receiver
US7031271B1 (en) 1999-05-19 2006-04-18 Motorola, Inc. Method of and apparatus for activating a spread-spectrum radiotelephone
US7085246B1 (en) * 1999-05-19 2006-08-01 Motorola, Inc. Method and apparatus for acquisition of a spread-spectrum signal
DE60033294T2 (en) * 1999-09-17 2007-10-25 Qualcomm, Inc., San Diego SYSTEM AND METHOD FOR SYNCHRONIZING BASE STATIONS IN CELLULAR OR PCS NETWORKS
JP2001111456A (en) * 1999-10-06 2001-04-20 Nec Corp Cdma receiver and cdma receiving method
US7023822B1 (en) * 2000-10-12 2006-04-04 Via Telecom Co., Ltd. Method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system
EP1094619A2 (en) * 1999-10-20 2001-04-25 Sony Corporation Signal receiving apparatus for global positioning system and mobile communication system
JP2001156705A (en) * 1999-11-30 2001-06-08 Nec Shizuoka Ltd Mobile communication system and method for controlling synchronization between wireless base stations
KR100379463B1 (en) * 1999-11-30 2003-04-10 엘지전자 주식회사 Measurement Method for Packet transmission
US6438117B1 (en) * 2000-01-07 2002-08-20 Qualcomm Incorporated Base station synchronization for handover in a hybrid GSM/CDMA network
US7068746B1 (en) 2000-03-01 2006-06-27 Lucent Technologies Inc. Base station transceiver to radio network controller synchronization filtering function
EP1133077A1 (en) * 2000-03-10 2001-09-12 Mitsubishi Electric Information Technology Centre Europe B.V. Methods for synchronizing between base stations and a mobile station in a cell-based mobile communications system
ATE368965T1 (en) * 2000-03-10 2007-08-15 Mitsubishi Electric Inf Tech METHOD FOR SYNCHRONIZING BASE STATIONS AND A MOBILE STATION IN A CELLULAR COMMUNICATIONS SYSTEM
US6775252B1 (en) * 2000-03-31 2004-08-10 Qualcomm, Inc. Dynamic adjustment of search window size in response to signal strength
US6430395B2 (en) * 2000-04-07 2002-08-06 Commil Ltd. Wireless private branch exchange (WPBX) and communicating between mobile units and base stations
KR100709088B1 (en) * 2000-04-07 2007-04-19 인터디지탈 테크날러지 코포레이션 Base station synchronization for wireless communication systems
US6717978B1 (en) * 2000-05-23 2004-04-06 Motorola, Inc. Method and apparatus for system time alignment
FI20001298A (en) * 2000-05-30 2001-12-01 Nokia Networks Oy Synchronizing frame transmissions over a telecommunications network
JP3382922B2 (en) * 2000-07-06 2003-03-04 埼玉日本電気株式会社 Mobile communication system, mobile station, exchange, and mobile communication method
JP3476009B2 (en) 2000-10-11 2003-12-10 日本電気株式会社 Mobile station and its finger assignment method in CDMA communication system
ATE261645T1 (en) * 2000-10-18 2004-03-15 Lg Electronics Inc METHOD FOR CONTROLLING HANDOVER IN A SYNCHRONOUS UPWARD TRANSMISSION SCHEME
US6980803B2 (en) * 2000-12-04 2005-12-27 Telefonaktiebolaget Lm Ericsson (Publ) Using statistically ascertained position for starting synchronization searcher during diversity handover
KR100551857B1 (en) * 2000-12-19 2006-02-13 엘지전자 주식회사 Method and apparatus for searching multipaths in IMT-2000
US20030012158A1 (en) * 2001-01-25 2003-01-16 Hang Jin System and method for synchronizing a base station in a distributed radio system
JP4726306B2 (en) * 2001-01-31 2011-07-20 パナソニック株式会社 Wireless communication system, mobile terminal station and direction determination method
US6452541B1 (en) * 2001-02-20 2002-09-17 Motorola, Inc. Time synchronization of a satellite positioning system enabled mobile receiver and base station
KR100464375B1 (en) * 2001-02-21 2005-01-13 삼성전자주식회사 Method for controlling base station transmission time in a CDMA communication system for uplink synchronous transmission
US6826244B2 (en) 2001-02-27 2004-11-30 Interdigital Technology Corporation Initial cell search algorithm for 3G FDD wireless communication systems
US7567636B2 (en) * 2001-05-18 2009-07-28 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7769076B2 (en) 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US6819707B2 (en) * 2001-05-18 2004-11-16 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7006556B2 (en) 2001-05-18 2006-02-28 Global Locate, Inc. Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference
US7995682B2 (en) * 2001-05-18 2011-08-09 Broadcom Corporation Method and apparatus for performing signal processing using historical correlation data
US7190712B2 (en) * 2001-05-18 2007-03-13 Global Locate, Inc Method and apparatus for performing signal correlation
US6891880B2 (en) * 2001-05-18 2005-05-10 Global Locate, Inc. Method and apparatus for performing signal correlation
JP4860901B2 (en) * 2001-05-26 2012-01-25 クゥアルコム・インコーポレイテッド Method and apparatus for synchronizing base stations using mobile GPS stations
US6775242B2 (en) 2001-07-09 2004-08-10 Qualcomm Incorporated Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
GB0117883D0 (en) * 2001-07-21 2001-09-12 Koninkl Philips Electronics Nv Method and apparatus for estimating gps time
KR100790132B1 (en) * 2001-08-28 2008-01-02 삼성전자주식회사 Method for synchronizing of base stations in mobile communications and system thereof
JP3423298B2 (en) * 2001-09-28 2003-07-07 三洋電機株式会社 Mobile phone, base station search method and program
US7006834B2 (en) * 2001-10-29 2006-02-28 Qualcomm Incorporated Base station time calibration using position measurement data sent by mobile stations during regular position location sessions
US7729412B2 (en) * 2001-10-29 2010-06-01 Qualcomm Incorporated Parameter estimator with dynamically variable integration time
US6738438B2 (en) * 2001-10-29 2004-05-18 Qualcomm Incorporated Parameter estimator with dynamically variable search window size and/or placement
US7558534B2 (en) 2001-11-02 2009-07-07 Qualcomm Incorporated Reliability metrics for parameter estimates which account for cumulative error
US7813311B2 (en) * 2002-02-05 2010-10-12 Interdigital Technology Corporation Method and apparatus for synchronizing base stations
JP2003259433A (en) * 2002-02-28 2003-09-12 Sony Corp System, equipment, and method for radio communication, and computer program
US7385913B2 (en) * 2002-04-24 2008-06-10 Motorola, Inc. Method and apparatus for compensating for variations in a receive portion of a wireless communication device
US7119713B2 (en) * 2002-06-27 2006-10-10 Elster Electricity, Llc Dynamic self-configuring metering network
US20040113810A1 (en) * 2002-06-28 2004-06-17 Mason Robert T. Data collector for an automated meter reading system
KR100802619B1 (en) 2002-11-07 2008-02-13 엘지전자 주식회사 Method for receiving data in a receiver under radio link control protocolprocessing method for rlc reception window
US7289541B2 (en) * 2002-12-04 2007-10-30 Raytheon Company Method for locating and tracking communication units in a synchronous wireless communication system
US7139225B2 (en) * 2003-03-27 2006-11-21 Qualcomm, Incorporated Virtual real-time clock based on time information from multiple communication systems
DE10331313B3 (en) * 2003-07-10 2005-01-05 Siemens Ag Method for synchronizing a radio communication system divided into radio cells
DE10331311B4 (en) 2003-07-10 2008-02-07 Siemens Ag Method for synchronizing a radio communication system divided into radio cells
US7853215B2 (en) * 2003-10-10 2010-12-14 Motorola, Inc. Communication circuit and method for selecting a reference link
KR20050036521A (en) * 2003-10-16 2005-04-20 삼성전자주식회사 Seamless handover method in fh-ofdm based mobile communication system
US7650155B2 (en) * 2003-12-10 2010-01-19 Nec Corporation Transmission time difference measurement method and system
KR100606884B1 (en) * 2003-12-30 2006-07-31 엘지노텔 주식회사 Apparatus and Method for Multi-Path Searching
US7227350B2 (en) * 2004-03-18 2007-06-05 Elster Electricity, Llc Bias technique for electric utility meter
US7315162B2 (en) * 2004-03-18 2008-01-01 Elster Electricity, Llc Reducing power consumption of electrical meters
US7262709B2 (en) * 2004-04-26 2007-08-28 Elster Electricity, Llc System and method for efficient configuration in a fixed network automated meter reading system
US7239250B2 (en) * 2004-04-26 2007-07-03 Elster Electricity, Llc System and method for improved transmission of meter data
US7187906B2 (en) * 2004-04-26 2007-03-06 Elster Electricity, Llc Method and system for configurable qualification and registration in a fixed network automated meter reading system
US20050251401A1 (en) * 2004-05-10 2005-11-10 Elster Electricity, Llc. Mesh AMR network interconnecting to mesh Wi-Fi network
US20050251403A1 (en) * 2004-05-10 2005-11-10 Elster Electricity, Llc. Mesh AMR network interconnecting to TCP/IP wireless mesh network
EP1749347B1 (en) * 2004-05-27 2012-08-15 Tag Safety Systems, Inc. Method of and system for determining the delay of digital signals
US7142106B2 (en) * 2004-06-15 2006-11-28 Elster Electricity, Llc System and method of visualizing network layout and performance characteristics in a wireless network
US7176807B2 (en) * 2004-09-24 2007-02-13 Elster Electricity, Llc System for automatically enforcing a demand reset in a fixed network of electricity meters
US7702594B2 (en) * 2004-09-24 2010-04-20 Elster Electricity, Llc System and method for automated configuration of meters
US7170425B2 (en) * 2004-09-24 2007-01-30 Elster Electricity, Llc System and method for creating multiple operating territories within a meter reading system
US7742430B2 (en) * 2004-09-24 2010-06-22 Elster Electricity, Llc System for automated management of spontaneous node migration in a distributed fixed wireless network
US7558356B2 (en) * 2004-09-30 2009-07-07 Airvana, Inc. Providing global positioning system (GPS) timing signals to remote cellular base stations
US7327998B2 (en) * 2004-12-22 2008-02-05 Elster Electricity, Llc System and method of providing a geographic view of nodes in a wireless network
US20060206433A1 (en) * 2005-03-11 2006-09-14 Elster Electricity, Llc. Secure and authenticated delivery of data from an automated meter reading system
KR101141645B1 (en) 2005-03-29 2012-05-17 엘지전자 주식회사 Method for Controlling Transmission of Data Block
US20060224335A1 (en) * 2005-03-29 2006-10-05 Elster Electricity, Llc Collecting interval data from a relative time battery powered automated meter reading devices
US8364185B2 (en) * 2005-04-18 2013-01-29 Samsung Electronics Co., Ltd. Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network
CN101167283B (en) * 2005-04-28 2014-05-07 哈里公司 Wireless communication apparatus and wireless communication method
US7495578B2 (en) * 2005-09-02 2009-02-24 Elster Electricity, Llc Multipurpose interface for an automated meter reading device
US7308369B2 (en) * 2005-09-28 2007-12-11 Elster Electricity Llc Ensuring automatic season change demand resets in a mesh type network of telemetry devices
US8068835B2 (en) * 2005-10-27 2011-11-29 Qualcomm Incorporated Tune-away and cross paging systems and methods
US20070147268A1 (en) * 2005-12-23 2007-06-28 Elster Electricity, Llc Distributing overall control of mesh AMR LAN networks to WAN interconnected collectors
US7545285B2 (en) * 2006-02-16 2009-06-09 Elster Electricity, Llc Load control unit in communication with a fixed network meter reading system
US7427927B2 (en) * 2006-02-16 2008-09-23 Elster Electricity, Llc In-home display communicates with a fixed network meter reading system
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
JP4944195B2 (en) * 2006-06-19 2012-05-30 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Calculation method of destination time alignment value used by user equipment in destination cell after handover
MX2009000259A (en) 2006-06-20 2009-01-22 Interdigital Tech Corp Handover in a long term evolution (lte) wireless communication system.
US8295250B2 (en) * 2006-07-24 2012-10-23 Qualcomm Incorporated Code interleaving for a structured code
US8194544B2 (en) * 2006-11-22 2012-06-05 Belair Networks Inc. Network delay shaping system and method for backhaul of wireless networks
US8073384B2 (en) * 2006-12-14 2011-12-06 Elster Electricity, Llc Optimization of redundancy and throughput in an automated meter data collection system using a wireless network
US8184608B2 (en) * 2007-03-27 2012-05-22 Tektronix, Inc. System and method for using CDMA PN offset to maintain instrument timing reference
US8320302B2 (en) * 2007-04-20 2012-11-27 Elster Electricity, Llc Over the air microcontroller flash memory updates
CN101669341B (en) * 2007-04-30 2014-03-12 Lm爱立信电话有限公司 Synchronization time difference measurements in OFDM systems
US8984133B2 (en) 2007-06-19 2015-03-17 The Invention Science Fund I, Llc Providing treatment-indicative feedback dependent on putative content treatment
US8682982B2 (en) 2007-06-19 2014-03-25 The Invention Science Fund I, Llc Preliminary destination-dependent evaluation of message content
US9374242B2 (en) 2007-11-08 2016-06-21 Invention Science Fund I, Llc Using evaluations of tentative message content
US8065404B2 (en) 2007-08-31 2011-11-22 The Invention Science Fund I, Llc Layering destination-dependent content handling guidance
US8082225B2 (en) 2007-08-31 2011-12-20 The Invention Science Fund I, Llc Using destination-dependent criteria to guide data transmission decisions
US20090097452A1 (en) * 2007-10-12 2009-04-16 Qualcomm Incorporated Femto cell synchronization and pilot search methodology
WO2009056638A1 (en) * 2007-11-02 2009-05-07 Nortel Networks Limited Synchronization of network nodes
US7930389B2 (en) 2007-11-20 2011-04-19 The Invention Science Fund I, Llc Adaptive filtering of annotated messages or the like
NZ586190A (en) 2007-12-26 2013-05-31 Elster Electricity Llc A utility meter network wherein meters can transmit electrical and other readings to a collector by using other meters as repeaters
US8649353B2 (en) 2008-03-04 2014-02-11 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles during handover
US8712415B2 (en) 2008-03-20 2014-04-29 Interdigital Patent Holdings, Inc. Timing and cell specific system information handling for handover in evolved UTRA
US8525692B2 (en) * 2008-06-13 2013-09-03 Elster Solutions, Llc Techniques for limiting demand from an electricity meter with an installed relay
JP4941775B2 (en) * 2008-06-23 2012-05-30 Ｎｅｃエンジニアリング株式会社 Time synchronizer
JP5107465B2 (en) 2008-06-30 2012-12-26 インターデイジタル パテント ホールディングス インコーポレイテッド Method and apparatus for performing handover in E-UTRAN (Evolved Universal Terrestrial Radio Access Network)
WO2010041992A1 (en) * 2008-10-07 2010-04-15 Telefonaktiebolaget L M Ericsson (Publ) User terminal assisted out-of-synchronization detection
US20100173636A1 (en) * 2009-01-06 2010-07-08 Mingshen Gao Method for improving frequency reuse utilizing synchronized downlink resources from adjacent cells
JP5314434B2 (en) * 2009-01-13 2013-10-16 株式会社エヌ・ティ・ティ・ドコモ Mobile communication method and radio base station
US9204349B2 (en) * 2009-02-10 2015-12-01 Qualcomm Incorporated Method and apparatus for facilitating a hand-in of user equipment to femto cells
US8203463B2 (en) 2009-02-13 2012-06-19 Elster Electricity Llc Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication
US9397876B2 (en) * 2009-02-20 2016-07-19 Broadcom Corporation Synchronization and frame structure determination of a base station
GB2469676B (en) 2009-04-23 2011-11-30 Percello Ltd Femtocell handset assisted clock correction
JP4558836B2 (en) * 2009-10-30 2010-10-06 富士通株式会社 Mobile communication system and wireless terminal device
US9642105B2 (en) * 2009-11-17 2017-05-02 Qualcomm Incorporated Access terminal-assisted time and/or frequency tracking
US9392562B2 (en) 2009-11-17 2016-07-12 Qualcomm Incorporated Idle access terminal-assisted time and/or frequency tracking
CN102118779B (en) * 2009-12-30 2014-12-10 中兴通讯股份有限公司 Method for realizing clock synchronization based on wireless system
US9271248B2 (en) 2010-03-02 2016-02-23 Qualcomm Incorporated System and method for timing and frequency synchronization by a Femto access point
RU2546545C2 (en) 2010-05-06 2015-04-10 Телефонактиеболагет Л М Эрикссон (Пабл) Method and device in wireless communication system
WO2012013735A1 (en) 2010-07-29 2012-02-02 Basf Se Composition comprising catalyst and lignin and its use for producing an aromatic composition
US9756553B2 (en) 2010-09-16 2017-09-05 Qualcomm Incorporated System and method for assisted network acquisition and search updates
US20120115496A1 (en) * 2010-11-05 2012-05-10 Qualcomm Incorporated System and method for synchronizing femtocells using intercell uplink signals
JP2014520086A (en) 2011-05-24 2014-08-21 ビーエーエスエフ ソシエタス・ヨーロピア Method for producing polyisocyanate from biomass
JP5978566B2 (en) * 2011-07-07 2016-08-24 ソニー株式会社 COMMUNICATION DEVICE, COMMUNICATION METHOD, AND BASE STATION
RU2565245C1 (en) * 2011-11-04 2015-10-20 Интел Корпорейшн TIMING SYNCHRONISATION FOR DOWNLINK (DL) TRANSMISSION IN COORDINATED MULTIPOINT (CoMP) SYSTEMS
EP2830370A4 (en) 2012-03-19 2015-11-11 Kyocera Corp Mobile communication system, wireless base station, and mobile communication method
US9155057B2 (en) 2012-05-01 2015-10-06 Qualcomm Incorporated Femtocell synchronization enhancements using access probes from cooperating mobiles
US9237530B2 (en) 2012-11-09 2016-01-12 Qualcomm Incorporated Network listen with self interference cancellation
US20140310553A1 (en) * 2013-04-10 2014-10-16 Xun Chen Hardware and software for synchronized data acquisition from multiple devices
WO2015000104A1 (en) * 2013-07-01 2015-01-08 华为技术有限公司 Air interface synchronization method, base stations, control apparatus and wireless communication system
JP6280051B2 (en) * 2013-07-10 2018-02-14 株式会社テイエルブイ Time synchronization system
KR101535721B1 (en) * 2013-10-30 2015-07-10 삼성에스디에스 주식회사 Method and apparatus for estimating queuing delay
US10314107B2 (en) * 2015-04-21 2019-06-04 Mitsubishi Electric Corporation Communication device, communication method, and communication system
TWI578825B (en) * 2015-10-21 2017-04-11 財團法人工業技術研究院 Communication system, base station, user equipment and timing synchronization method for base station thereof
US10608734B2 (en) 2015-10-22 2020-03-31 Phluido, Inc. Virtualization and orchestration of a radio access network
US10958301B2 (en) 2018-09-18 2021-03-23 Roku, Inc. Audio synchronization of a dumb speaker and a smart speaker using a spread code
US10992336B2 (en) * 2018-09-18 2021-04-27 Roku, Inc. Identifying audio characteristics of a room using a spread code
US10931909B2 (en) 2018-09-18 2021-02-23 Roku, Inc. Wireless audio synchronization using a spread code
FR3091448B1 (en) * 2018-12-31 2023-01-06 Air Lynx Base station of a mobile structure of a mobile radiocommunication system with regulated transmission power
CN111711983A (en) * 2020-05-27 2020-09-25 南方电网数字电网研究院有限公司 Wireless time synchronization method and system
CN115932351B (en) * 2023-03-09 2023-07-04 深圳市鼎阳科技股份有限公司 Oscilloscope cascade delay correction method, oscilloscope, terminal and medium

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718109A (en) * 1986-03-06 1988-01-05 Motorola, Inc. Automatic synchronization system
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
SU1474860A1 (en) 1987-06-25 1989-04-23 Всесоюзный Заочный Электротехнический Институт Связи Mobile radio communication system
US5056109A (en) * 1989-11-07 1991-10-08 Qualcomm, Inc. Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5101501A (en) * 1989-11-07 1992-03-31 Qualcomm Incorporated Method and system for providing a soft handoff in communications in a cdma cellular telephone system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5212804A (en) * 1990-08-02 1993-05-18 Gte Airfone, Inc. Communication system having multiple base stations and multiple mobile units
TW224191B (en) * 1992-01-28 1994-05-21 Qualcomm Inc
US5267261A (en) * 1992-03-05 1993-11-30 Qualcomm Incorporated Mobile station assisted soft handoff in a CDMA cellular communications system
MX9301888A (en) * 1992-04-10 1993-11-30 Ericsson Telefon Ab L M MULTIPLE ACCESS OF TIME DIVISION FOR ACCESS OF A MOBILE IN A MULTIPLE ACCESS SYSTEM OF DIVISION OF CODE.
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5613211A (en) * 1992-10-07 1997-03-18 Nippon Steel Corporation Method of establishing inter base-station synchronization and mobile radio communicaton system using the method
US5448570A (en) * 1993-03-17 1995-09-05 Kyocera Corporation System for mutual synchronization and monitoring between base stations
EP0626769B1 (en) * 1993-05-26 2000-02-02 Nec Corporation Network synchronization for cellular TDMA communication using signals from mobile stations in neighboring cells
DE4317895C2 (en) * 1993-05-28 1996-11-14 Siemens Ag Method for synchronizing base stations in a multi-cellular, wireless telephone system
DE69431287T2 (en) * 1993-06-14 2003-05-15 Ericsson Telefon Ab L M TRANSMISSION TIME ADJUSTMENT IN THE DOWNWARD CONNECTION OF A SYSTEM WITH CODEMULTIPLEX MULTIPLE ACCESS
US6088590A (en) 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
US5561618A (en) * 1993-12-22 1996-10-01 Qualcomm Incorporated Method and apparatus for performing a fast Hadamard transform
JPH07284141A (en) * 1994-04-08 1995-10-27 Oki Electric Ind Co Ltd Hand-over method
JP2606590B2 (en) * 1994-06-30 1997-05-07 日本電気株式会社 Inter-station synchronization method
CA2172370C (en) * 1994-07-29 2008-03-18 Todd R. Sutton Method and apparatus for performing code acquisition in a cdma communications system
MY120873A (en) 1994-09-30 2005-12-30 Qualcomm Inc Multipath search processor for a spread spectrum multiple access communication system
US5710768A (en) * 1994-09-30 1998-01-20 Qualcomm Incorporated Method of searching for a bursty signal
US5654979A (en) * 1995-01-13 1997-08-05 Qualcomm Incorporated Cell site demodulation architecture for a spread spectrum multiple access communication systems
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US5727064A (en) * 1995-07-03 1998-03-10 Lucent Technologies Inc. Cryptographic system for wireless communications
US5642377A (en) * 1995-07-25 1997-06-24 Nokia Mobile Phones, Ltd. Serial search acquisition system with adaptive threshold and optimal decision for spread spectrum systems
FR2739244B1 (en) * 1995-09-26 1997-11-14 Alcatel Mobile Comm France BASE STATION FOR CELLULAR MOBILE RADIOCOMMUNICATIONS SYSTEM AND SYSTEM FOR SYNCHRONIZING SUCH BASE STATIONS
US6999438B2 (en) * 1996-01-18 2006-02-14 Kabushiki Kaisha Toshiba Radio communication system
US6799019B1 (en) * 1996-06-04 2004-09-28 Texas Instruments Incorporated Method and system for accomodating processing delay in a cellular base station
JPH1022874A (en) * 1996-07-09 1998-01-23 Hitachi Ltd Cdma communication system and method therefor
US6014376A (en) * 1996-09-18 2000-01-11 Motorola, Inc. Method for over-the-air synchronization adjustment in a communication system
US6243372B1 (en) * 1996-11-14 2001-06-05 Omnipoint Corporation Methods and apparatus for synchronization in a wireless network
US5872774A (en) * 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
US6208871B1 (en) 1998-02-27 2001-03-27 Motorola, Inc. Method and apparatus for providing a time adjustment to a wireless communication system
US6947768B2 (en) * 2001-09-28 2005-09-20 Kabushiki Kaisha Toshiba Base station apparatus and terminal apparatus
JP3922571B2 (en) * 2003-03-26 2007-05-30 ソニー株式会社 Information processing apparatus, information processing method, recording medium, and program
US7562379B2 (en) * 2003-12-22 2009-07-14 Sony Corporation Method and system for wireless digital multimedia presentation

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