PL2312776T3 - Sposób, urządzenie i system synchronizacji czasu w systemie OFDM - Google Patents

Sposób, urządzenie i system synchronizacji czasu w systemie OFDM

Info

Publication number
PL2312776T3
PL2312776T3 PL10183785T PL10183785T PL2312776T3 PL 2312776 T3 PL2312776 T3 PL 2312776T3 PL 10183785 T PL10183785 T PL 10183785T PL 10183785 T PL10183785 T PL 10183785T PL 2312776 T3 PL2312776 T3 PL 2312776T3
Authority
PL
Poland
Prior art keywords
time synchronization
ofdm
ofdm system
synchronization
time
Prior art date
Application number
PL10183785T
Other languages
English (en)
Inventor
Guijin Xu
Guozhu Long
Ruzhou Feng
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of PL2312776T3 publication Critical patent/PL2312776T3/pl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2663—Coarse synchronisation, e.g. by correlation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2672—Frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2682—Precision
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation
    • 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
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)
  • Mobile Radio Communication Systems (AREA)
PL10183785T 2009-09-30 2010-09-30 Sposób, urządzenie i system synchronizacji czasu w systemie OFDM PL2312776T3 (pl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910204972.1A CN102035639B (zh) 2009-09-30 2009-09-30 时间同步方法、装置和系统
EP20100183785 EP2312776B1 (en) 2009-09-30 2010-09-30 Method, apparatus, and system for time synchronization in an OFDM system

Publications (1)

Publication Number Publication Date
PL2312776T3 true PL2312776T3 (pl) 2013-01-31

Family

ID=43629601

Family Applications (2)

Application Number Title Priority Date Filing Date
PL12170907T PL2498429T3 (pl) 2009-09-30 2010-09-30 Sposób, urządzenie i system synchronizacji czasu
PL10183785T PL2312776T3 (pl) 2009-09-30 2010-09-30 Sposób, urządzenie i system synchronizacji czasu w systemie OFDM

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PL12170907T PL2498429T3 (pl) 2009-09-30 2010-09-30 Sposób, urządzenie i system synchronizacji czasu

Country Status (7)

Country Link
US (2) US8432851B2 (pl)
EP (3) EP2312776B1 (pl)
CN (1) CN102035639B (pl)
DK (1) DK2498428T3 (pl)
ES (2) ES2392690T3 (pl)
PL (2) PL2498429T3 (pl)
PT (1) PT2312776E (pl)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11650784B2 (en) 2003-07-28 2023-05-16 Sonos, Inc. Adjusting volume levels
US9207905B2 (en) 2003-07-28 2015-12-08 Sonos, Inc. Method and apparatus for providing synchrony group status information
US8086752B2 (en) 2006-11-22 2011-12-27 Sonos, Inc. Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data
US11106425B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US11294618B2 (en) 2003-07-28 2022-04-05 Sonos, Inc. Media player system
US8234395B2 (en) 2003-07-28 2012-07-31 Sonos, Inc. System and method for synchronizing operations among a plurality of independently clocked digital data processing devices
US8290603B1 (en) 2004-06-05 2012-10-16 Sonos, Inc. User interfaces for controlling and manipulating groupings in a multi-zone media system
US11106424B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US9374607B2 (en) 2012-06-26 2016-06-21 Sonos, Inc. Media playback system with guest access
US9977561B2 (en) 2004-04-01 2018-05-22 Sonos, Inc. Systems, methods, apparatus, and articles of manufacture to provide guest access
US8868698B2 (en) 2004-06-05 2014-10-21 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US8326951B1 (en) 2004-06-05 2012-12-04 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US8788080B1 (en) 2006-09-12 2014-07-22 Sonos, Inc. Multi-channel pairing in a media system
US9202509B2 (en) 2006-09-12 2015-12-01 Sonos, Inc. Controlling and grouping in a multi-zone media system
US8483853B1 (en) 2006-09-12 2013-07-09 Sonos, Inc. Controlling and manipulating groupings in a multi-zone media system
US7680154B2 (en) * 2007-12-31 2010-03-16 Intel Corporation Methods and apparatus for synchronizing networked audio devices
US9001904B2 (en) * 2010-03-03 2015-04-07 Lantiq Deutschland Gmbh Multi-carrier clock transport and synchronization
CN102244925B (zh) 2010-05-14 2014-05-07 华为技术有限公司 时钟同步方法、用户端设备和时钟同步系统
US11265652B2 (en) 2011-01-25 2022-03-01 Sonos, Inc. Playback device pairing
US11429343B2 (en) 2011-01-25 2022-08-30 Sonos, Inc. Stereo playback configuration and control
US9680567B2 (en) 2011-03-03 2017-06-13 Acacia Communications, Inc. Fault localization and fiber security in optical transponders
EP2734904B1 (en) * 2011-07-20 2018-03-07 Aviat Networks, Inc. Systems and methods of network synchronization
FR2979506B1 (fr) * 2011-08-30 2013-08-30 Bull Sas Procede de synchronisation d'une grappe de serveurs et grappe de serveurs mettant en oeuvre ce procede
EP2555465A4 (en) * 2012-02-01 2013-12-18 Huawei Tech Co Ltd METHOD, DEVICE AND SYSTEM FOR SYNCHRONIZATION
JP5696716B2 (ja) * 2012-02-28 2015-04-08 横河電機株式会社 無線通信システム、無線通信方法、及び無線アクセスポイント装置
AT13701U1 (de) * 2012-03-21 2014-06-15 Bachmann Gmbh Verfahren zur Synchronisation von Zeitbasis und Ereignissen in einem verzweigten Verbundnetz, z.B. in Windpark-Netzen
US9729115B2 (en) 2012-04-27 2017-08-08 Sonos, Inc. Intelligently increasing the sound level of player
US9130687B2 (en) 2012-05-23 2015-09-08 Anue Systems, Inc. System and method for direct passive monitoring of packet delay variation and time error in network packet communications
CN104348607B (zh) * 2013-07-29 2017-11-07 深圳光启智能光子技术有限公司 用于可见光通信系统中时钟自动调整的方法和装置
US9008330B2 (en) 2012-09-28 2015-04-14 Sonos, Inc. Crossover frequency adjustments for audio speakers
US9516440B2 (en) 2012-10-01 2016-12-06 Sonos Providing a multi-channel and a multi-zone audio environment
US9471090B2 (en) 2012-11-21 2016-10-18 Starkey Laboratories, Inc. Method and apparatus for synchronizing hearing instruments via wireless communication
CN103857029B (zh) * 2012-11-30 2017-04-05 上海贝尔股份有限公司 一种确定上行链路和下行链路的延时差的方法、装置和设备
WO2014089252A1 (en) * 2012-12-05 2014-06-12 Intel Corporation Methods and arrangements for time synchronization and service discovery
US9521449B2 (en) * 2012-12-24 2016-12-13 Intel Corporation Techniques for audio synchronization
CN103441833B (zh) * 2013-08-26 2016-08-10 瑞斯康达科技发展股份有限公司 一种主从设备频率同步方法及系统
US9491727B2 (en) * 2013-09-10 2016-11-08 Anue Systems, Inc. System and method for monitoring network synchronization
US20150103818A1 (en) * 2013-10-11 2015-04-16 Qualcomm Incorporated Transport and error compensation of a globally synchronized time-base
CN103532792B (zh) * 2013-10-25 2017-11-17 中磊电子（苏州）有限公司 网络频宽测量方法
US9306693B2 (en) * 2013-11-15 2016-04-05 Broadcom Corporation Time synchronization architecture in a network device
CN104702533B (zh) * 2013-12-09 2018-01-26 中国联合网络通信集团有限公司 一种链路时延补偿方法及装置
CN103763056A (zh) * 2013-12-31 2014-04-30 电信科学技术第五研究所 时间同步高精度远程监控的方法
US9226073B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
US9226087B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
CN105577348B (zh) * 2014-10-08 2020-06-30 中兴通讯股份有限公司 一种基于时间同步网的频偏监测方法和装置
CN106464656B (zh) * 2014-12-16 2020-02-21 华为技术有限公司 一种时间同步方法及装置
CN104506298B (zh) * 2014-12-26 2018-08-03 上海交通大学 一种工业网络检测系统时间同步方法
US9665341B2 (en) 2015-02-09 2017-05-30 Sonos, Inc. Synchronized audio mixing
JP6402428B2 (ja) * 2015-03-16 2018-10-10 カルソニックカンセイ株式会社 多重通信装置
US10248376B2 (en) 2015-06-11 2019-04-02 Sonos, Inc. Multiple groupings in a playback system
WO2017015222A1 (en) * 2015-07-20 2017-01-26 Lattice Semiconductor Corporation Low-speed bus time stamp methods and circuitry
US10764026B2 (en) 2015-07-20 2020-09-01 Lattice Semiconductor Corporation Acoustic gesture recognition systems and methods
CN106921456B (zh) * 2015-12-24 2018-06-19 中国科学院沈阳自动化研究所 基于ptp协议的多跳无线回程网络时间同步误差补偿方法
US10303422B1 (en) 2016-01-05 2019-05-28 Sonos, Inc. Multiple-device setup
US10158997B2 (en) * 2016-04-14 2018-12-18 Apple Inc. Wireless system with secure range determination
US10165534B2 (en) * 2016-06-30 2018-12-25 Imagination Technologies Limited Master synchronisation
SG11201900499SA (en) 2016-07-29 2019-02-27 Razer Asia Pacific Pte Ltd Interface devices, methods for controlling an interface device, and computer-readable media
US10712997B2 (en) 2016-10-17 2020-07-14 Sonos, Inc. Room association based on name
RU2019114909A (ru) 2016-10-17 2020-11-17 Зомоджо Пти Лтд Способ и система присвоения точной временной метки
CN108023723B (zh) * 2016-11-04 2021-07-09 华为技术有限公司 频率同步的方法以及从时钟
US10863469B2 (en) * 2017-10-11 2020-12-08 Google Llc System and method for accurate timestamping of virtual reality controller data
CN108599885B (zh) * 2018-03-08 2019-07-26 清华大学 高精度时间同步方法
CN109379500B (zh) 2018-11-01 2021-08-10 厦门亿联网络技术股份有限公司 一种基于以太网的级联会议电话装置及方法
US11115142B1 (en) * 2018-12-21 2021-09-07 Equinix, Inc. Timing synchronization service and distribution system
AU2020251395A1 (en) 2019-04-01 2021-09-16 Zomojo Pty Ltd A method and apparatus for network time syncing
LU101216B1 (de) * 2019-05-15 2020-11-16 Phoenix Contact Gmbh & Co Technik zur Korrektur eiines Zeitparameters
EP3991350A4 (en) * 2019-06-25 2023-08-02 Cisco Technology, Inc. METHOD AND DEVICE FOR HIGH PRECISION TIME STAMPING
US11265722B2 (en) * 2020-03-19 2022-03-01 Jinan University Peripheral-free secure pairing protocol by randomly switching power
US11616587B1 (en) * 2020-11-30 2023-03-28 Meta Platforms, Inc. Remote clock synchronization using network communication and satellite signals
EP4040870B1 (en) * 2021-02-05 2023-05-17 ADVA Optical Networking SE A timing system and a method for receiving clock information from a satellite system
CN113411157B (zh) * 2021-08-20 2021-11-09 浙江国利信安科技有限公司 用于时钟同步的方法、从时钟设备、主时钟设备和系统
CN113676280B (zh) * 2021-08-29 2023-02-03 上海橘盒数字科技有限公司 一种基于Modbus协议的多设备时钟同步方法
CN114221731B (zh) * 2021-12-09 2024-04-16 北京罗克维尔斯科技有限公司 时间同步精度确定方法、系统及电子设备
CN116388919B (zh) * 2023-04-18 2024-05-14 广东高云半导体科技股份有限公司 一种基于工业以太网实现从站同步的方法和从站

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253096B1 (en) * 1986-05-20 1995-10-25 Mitsubishi Denki Kabushiki Kaisha Time synchronization method in a data transmission system
US4882739A (en) * 1988-01-26 1989-11-21 Computer Sports Medicine, Inc. Method for adjusting clocks of multiple data processors to a common time base
US6122246A (en) * 1996-08-22 2000-09-19 Tellabs Operations, Inc. Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system
US5995483A (en) * 1996-08-22 1999-11-30 Tellabs Operations, Inc. Apparatus and method for upstream clock synchronization in a multi-point OFDM/DMT digital communication system
US6072810A (en) * 1996-11-08 2000-06-06 Alcatel Method to transparently transport an incoming clock signal over a network segment, and related transmitter and receiver unit
US6243369B1 (en) * 1998-05-06 2001-06-05 Terayon Communication Systems, Inc. Apparatus and method for synchronizing an SCDMA upstream or any other type upstream to an MCNS downstream or any other type downstream with a different clock rate than the upstream
GB2342018B (en) * 1998-09-24 2003-11-05 Nokia Mobile Phones Ltd Communication network
EP1093248B1 (en) * 1999-10-13 2003-07-02 STMicroelectronics N.V. Symbol synchronisation in a DMT system with crosstalk interference
US6975610B1 (en) * 2000-06-19 2005-12-13 Koninklijke Philips Electronics N.V. System and method for communicating between a plurality of asynchronous systems
WO2002065707A2 (en) * 2000-12-26 2002-08-22 Bluesocket, Inc. Methods and systems for clock synchronization across wireless networks
JP4212403B2 (ja) * 2003-04-15 2009-01-21 株式会社東芝 放送信号の送信時刻測定装置及びその測定方法、この送信時刻測定装置を用いた送信装置及び中継装置、及び遅延時間測定装置
US8086752B2 (en) * 2006-11-22 2011-12-27 Sonos, Inc. Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data
US7058089B2 (en) * 2004-02-18 2006-06-06 Rosemount, Inc. System and method for maintaining a common sense of time on a network segment
KR101197280B1 (ko) * 2005-07-15 2012-11-05 삼성전자주식회사 타임 스탬프를 이용한 타임 동기 방법 및 장치
US8724615B1 (en) * 2005-10-11 2014-05-13 Atmel Corporation Method and apparatus for generation of a system master timebase of a computing device using indirect signalling of timing information
US7447931B1 (en) * 2005-12-09 2008-11-04 Rockwell Automation Technologies, Inc. Step time change compensation in an industrial automation network
US7689854B2 (en) * 2006-09-22 2010-03-30 Agilent Technologies, Inc. Method and apparatus for establishing IEEE 1588 clock synchronization across a network element comprising first and second cooperating smart interface converters wrapping the network element
US7730230B1 (en) * 2006-12-29 2010-06-01 Marvell International Ltd. Floating frame timing circuits for network devices
CN101299749B (zh) * 2007-04-30 2011-12-07 华为技术有限公司 网络间的时钟传递方法和时钟传递装置
KR20090032306A (ko) * 2007-09-27 2009-04-01 한국전자통신연구원 네트워크상의 타임 동기화 시스템 및 방법
CN101478358B (zh) * 2008-01-02 2013-01-23 中兴通讯股份有限公司 一种优化时间同步校正的方法和装置
CN101499871B (zh) * 2008-02-03 2013-02-13 大唐移动通信设备有限公司 Sdh网元时延检测方法、时钟同步方法及sdh网元
US8274998B2 (en) * 2008-10-02 2012-09-25 Cortina Systems, Inc. Systems and methods for packet based timing offset determination using timing adjustment information
CN101729180A (zh) * 2008-10-21 2010-06-09 华为技术有限公司 精准时钟同步方法及系统、精准时钟频率/时间同步装置

Also Published As

Publication number Publication date
EP2312776B1 (en) 2012-09-05
EP2498429A3 (en) 2012-10-31
CN102035639B (zh) 2014-09-17
EP2498428A3 (en) 2012-10-31
US20130223577A1 (en) 2013-08-29
EP2498429A2 (en) 2012-09-12
EP2498428B1 (en) 2014-04-09
PL2498429T3 (pl) 2015-01-30
US8432851B2 (en) 2013-04-30
PT2312776E (pt) 2012-11-06
ES2477327T3 (es) 2014-07-16
EP2498429B1 (en) 2014-09-03
EP2312776A1 (en) 2011-04-20
CN102035639A (zh) 2011-04-27
US20110075685A1 (en) 2011-03-31
US9007989B2 (en) 2015-04-14
EP2498428A2 (en) 2012-09-12
ES2392690T3 (es) 2012-12-12
DK2498428T3 (da) 2014-06-30

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