CA2727865A1 - Method and apparatus for frame detection in a communications system - Google Patents

Method and apparatus for frame detection in a communications system Download PDF

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Publication number
CA2727865A1
CA2727865A1 CA2727865A CA2727865A CA2727865A1 CA 2727865 A1 CA2727865 A1 CA 2727865A1 CA 2727865 A CA2727865 A CA 2727865A CA 2727865 A CA2727865 A CA 2727865A CA 2727865 A1 CA2727865 A1 CA 2727865A1
Authority
CA
Canada
Prior art keywords
subframe
time
reference signal
signal
boundary
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.)
Abandoned
Application number
CA2727865A
Other languages
English (en)
French (fr)
Inventor
Scott Stratford
David Vucich
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.)
Commscope Connectivity LLC
Original Assignee
LGC Wireless LLC
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 LGC Wireless LLC filed Critical LGC Wireless LLC
Publication of CA2727865A1 publication Critical patent/CA2727865A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0608—Detectors therefor, e.g. correlators, state machines
    • 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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
    • 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
    • H04W56/007—Open loop measurement
    • H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
    • H04W56/008—Open loop measurement based on arrival time vs. expected arrival time detecting arrival of signal based on received raw signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
CA2727865A 2008-06-24 2009-06-22 Method and apparatus for frame detection in a communications system Abandoned CA2727865A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/144,961 2008-06-24
US12/144,961 US8385373B2 (en) 2008-06-24 2008-06-24 Method and apparatus for frame detection in a communications system
PCT/US2009/048149 WO2010008796A2 (en) 2008-06-24 2009-06-22 Method and apparatus for frame detection in a communications system

Publications (1)

Publication Number Publication Date
CA2727865A1 true CA2727865A1 (en) 2010-01-21

Family

ID=41431200

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2727865A Abandoned CA2727865A1 (en) 2008-06-24 2009-06-22 Method and apparatus for frame detection in a communications system

Country Status (6)

Country Link
US (1) US8385373B2 (enExample)
EP (3) EP2297884B1 (enExample)
JP (1) JP5406924B2 (enExample)
CN (1) CN102084614B (enExample)
CA (1) CA2727865A1 (enExample)
WO (1) WO2010008796A2 (enExample)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8310963B2 (en) 2008-06-24 2012-11-13 Adc Telecommunications, Inc. System and method for synchronized time-division duplex signal switching
US8626238B2 (en) * 2008-06-24 2014-01-07 Adc Telecommunications, Inc. Method and apparatus for switching in a TDD system
US7961689B2 (en) * 2008-08-18 2011-06-14 Adc Telecommunications, Inc. Method and apparatus for determining an end of a subframe in a TDD system
AU2010210766A1 (en) 2009-02-03 2011-09-15 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
US8346091B2 (en) * 2009-04-29 2013-01-01 Andrew Llc Distributed antenna system for wireless network systems
KR101584550B1 (ko) 2010-04-07 2016-01-12 엘지전자 주식회사 분산 안테나 시스템에서의 신호 송수신 방법 및 장치
US9107077B2 (en) * 2010-07-23 2015-08-11 Broadcom Corporation Method and system for time synchronization of WiMAX and LTE-TDD networks
US8472579B2 (en) * 2010-07-28 2013-06-25 Adc Telecommunications, Inc. Distributed digital reference clock
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
US8532242B2 (en) * 2010-10-27 2013-09-10 Adc Telecommunications, Inc. Distributed antenna system with combination of both all digital transport and hybrid digital/analog transport
EP2702780A4 (en) * 2011-04-29 2014-11-12 Corning Cable Sys Llc SYSTEMS, METHODS AND DEVICES FOR INCREASING HIGH-FREQUENCY (HF) PERFORMANCE IN DISTRIBUTED ANTENNA SYSTEMS
JP5825353B2 (ja) * 2011-09-28 2015-12-02 富士通株式会社 無線信号送信方法、無線信号送信装置及び無線信号受信装置
CN103051371B (zh) * 2011-10-13 2015-05-06 京信通信系统（中国）有限公司 一种WiMAX直放站同步方法及装置
CN103051372B (zh) * 2011-10-13 2015-07-01 京信通信系统（中国）有限公司 一种WiMAX直放站同步方法及装置
US8693342B2 (en) 2011-10-28 2014-04-08 Adc Telecommunications, Inc. Distributed antenna system using time division duplexing scheme
CN104081696B (zh) 2011-11-04 2017-07-18 英特尔公司 用于协调多点(CoMP)系统中下行链路(DL)传输的定时同步
US8744390B2 (en) * 2012-03-29 2014-06-03 Adc Telecommunications, Inc. Systems and methods for adjusting system tests based on detected interference
WO2013162988A1 (en) 2012-04-25 2013-10-31 Corning Cable Systems Llc Distributed antenna system architectures
WO2013166713A1 (en) * 2012-05-11 2013-11-14 Nokia Siemens Networks Oy Channel state information (csi) report subsets under flexible time division duplex (tdd) ul/dl configuration
WO2014024192A1 (en) * 2012-08-07 2014-02-13 Corning Mobile Access Ltd. Distribution of time-division multiplexed (tdm) management services in a distributed antenna system, and related components, systems, and methods
CN102882645B (zh) * 2012-09-24 2015-03-18 华为技术有限公司 一种帧边界检测的方法及装置
EP4099797A1 (en) 2013-02-22 2022-12-07 CommScope Technologies LLC Universal remote radio head
US10020850B2 (en) 2013-02-22 2018-07-10 Commscope Technologies Llc Master reference for base station network interface sourced from distributed antenna system
EP3008828B1 (en) 2013-06-12 2017-08-09 Corning Optical Communications Wireless Ltd. Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass)
TWI511473B (zh) 2013-07-01 2015-12-01 Ind Tech Res Inst 電子裝置與控制方法
EP3039943A1 (en) * 2013-08-29 2016-07-06 Corning Optical Communications Wireless Ltd. Detecting uplink/downlink time-division duplexed (tdd) frame configurations to synchronize tdd downlink and uplink communications between tdd communications equipment
US9787457B2 (en) 2013-10-07 2017-10-10 Commscope Technologies Llc Systems and methods for integrating asynchronous signals in distributed antenna system with direct digital interface to base station
EP3064031B1 (en) * 2013-10-30 2019-05-08 Andrew Wireless Systems GmbH Switching sub-system for distributed antenna systems using time division duplexing
EP3095281B1 (en) * 2014-01-15 2020-04-29 LG Electronics Inc. Method and apparatus for controlling uplink power in a wireless communication system
CN103813438B (zh) * 2014-02-21 2018-11-06 京信通信系统（中国）有限公司 一种时隙同步方法、设备及基站
WO2016108447A1 (ko) 2014-12-30 2016-07-07 주식회사 쏠리드 시분할듀플렉스 방식의 분산 안테나 시스템
WO2016179750A1 (zh) * 2015-05-08 2016-11-17 京信通信技术(广州)有限公司 有源das系统中继端增益控制方法和装置、中继端机
US10560214B2 (en) * 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
EP3761525B1 (en) 2015-10-03 2023-01-04 CommScope Technologies LLC Tdd timing recovery in a distributed antenna system
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller
US10383114B2 (en) * 2016-03-24 2019-08-13 Qualcomm Incorporated On co-channel sidelink LTE V2V and DSRC communication
US10136427B2 (en) 2016-08-08 2018-11-20 Corning Optical Communications Wireless Ltd Partitioning a time-division-based communications link for communicating multiple types of communications signals in a wireless distribution system (WDS)
IT201700055080A1 (it) * 2017-05-22 2018-11-22 Teko Telecom S R L Sistema di comunicazione wireless e relativo metodo per il trattamento di dati fronthaul di uplink
EP3632006B1 (en) * 2017-05-30 2025-01-01 Procomm International Pte. Ltd. Expand dynamic of tdd signal detection and expand robustness against volatile signals
JP7005360B2 (ja) * 2018-01-25 2022-01-21 株式会社東芝 通信中継装置、制御方法、および、プログラム
CN110417501B (zh) * 2018-04-28 2020-12-18 华为技术有限公司 通信方法及通信装置
JP7020993B2 (ja) 2018-05-14 2022-02-16 株式会社東芝 通信装置、分散アンテナシステム及び切り替え方法
EP3667959A4 (en) * 2018-07-23 2021-05-05 SOLiD, INC. REPEATER AND METHOD OF OPERATING THEREOF
EP3991323A4 (en) 2019-09-13 2023-06-21 CommScope Technologies LLC REPEATER SYSTEM FOR USE WITH A NEW 5G RADIO BASE STATION THAT USES TIME-DIVISION DUPLEXING
JP2024007110A (ja) * 2022-07-05 2024-01-18 株式会社東芝 通信装置、制御方法、及びプログラム
JP2024108794A (ja) * 2023-01-31 2024-08-13 株式会社東芝 通信装置、制御方法、及びプログラム
JP2025025565A (ja) * 2023-08-09 2025-02-21 株式会社東芝 通信装置、制御方法、及びプログラム

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL118447A (en) * 1995-06-05 2000-01-31 Omnipunt Corp System and method for time division duplex communication
JPH0984126A (ja) * 1995-09-19 1997-03-28 Toshiba Corp 移動通信システムおよびこのシステムで使用される中継装置
US6205133B1 (en) * 1996-11-25 2001-03-20 Ericsson Inc. Flexible wideband architecture for use in radio communications systems
US5909471A (en) * 1997-08-08 1999-06-01 Arraycomm, Inc. Method and system for rapid initial control signal detection in a wireless communications system
US6993084B1 (en) * 1998-04-14 2006-01-31 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Coarse frequency synchronisation in multicarrier systems
JP3596452B2 (ja) * 2000-09-28 2004-12-02 日本電信電話株式会社 無線中継器
US7006587B1 (en) * 2001-11-20 2006-02-28 Cisco Technolgy, Inc. Preamble aided synchronization
US7738437B2 (en) * 2003-01-21 2010-06-15 Nortel Networks Limited Physical layer structures and initial access schemes in an unsynchronized communication network
CN100474961C (zh) * 2003-09-30 2009-04-01 松下电器产业株式会社 用于发送压缩模式中的下行传播路径质量信息的方法和装置
KR100650217B1 (ko) 2004-06-25 2006-11-24 삼성탈레스 주식회사 Ｏｆｄｍａ／ｔｄｄ 시스템에서의 하향링크 프레임 동기획득 장치 및 방법
KR20060005925A (ko) * 2004-07-14 2006-01-18 에스케이 텔레콤주식회사 Ｔｄｄ방식과 ｏｆｄｍ 변조 방식을 이용하는 이동통신망의 ｒｆ 중계기에서 전송 신호를 분리하는 스위칭타이밍 신호 생성 방법 및 시스템
KR100700894B1 (ko) 2004-11-23 2007-03-28 (주)씨앤드에스 마이크로 웨이브 티디디 방식의 중계기용 프레임 동기 획득장치 및 방법
KR100641609B1 (ko) 2004-12-01 2006-11-02 (주)씨앤드에스 마이크로 웨이브 상·하향링크 제어장치가 구비된 오에프디엠/티디디 방식중계장치 및 상·하향링크 중계방법
CN2824438Y (zh) * 2004-12-09 2006-10-04 北京天碁科技有限公司 帧同步码检测装置
US7639754B2 (en) * 2006-03-29 2009-12-29 Posdata Co., Ltd. Method of detecting a frame boundary of a received signal in digital communication system and apparatus of enabling the method
US7616679B2 (en) * 2006-03-29 2009-11-10 Posdata Co., Ltd. Method and apparatus for searching cells utilizing down link preamble signal
JP4866690B2 (ja) * 2006-09-11 2012-02-01 富士通株式会社 プリアンブル受信装置
EP2215756A2 (en) * 2007-11-09 2010-08-11 ZTE U.S.A., Inc. Flexible ofdm/ofdma frame structure for communication systems
JP5136085B2 (ja) * 2008-01-25 2013-02-06 富士通株式会社 受信装置及び移動端末装置並びに同期タイミング検出方法

Also Published As

Publication number Publication date
US20090316611A1 (en) 2009-12-24
US8385373B2 (en) 2013-02-26
EP2297884A4 (en) 2015-04-01
WO2010008796A3 (en) 2010-04-01
EP3226448A1 (en) 2017-10-04
JP5406924B2 (ja) 2014-02-05
EP2297884B1 (en) 2017-06-07
CN102084614A (zh) 2011-06-01
EP3751809B1 (en) 2022-09-07
EP3226448B1 (en) 2020-08-05
CN102084614B (zh) 2015-05-20
EP2297884A2 (en) 2011-03-23
JP2011525755A (ja) 2011-09-22
EP3751809A1 (en) 2020-12-16
WO2010008796A2 (en) 2010-01-21

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Legal Events

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EEER Examination request

Effective date: 20140130

FZDE Discontinued

Effective date: 20190625