KR102397325B1 - 무선 통신 시스템들에 대한 동기화 - Google Patents

무선 통신 시스템들에 대한 동기화 Download PDF

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KR102397325B1
KR102397325B1 KR1020197032477A KR20197032477A KR102397325B1 KR 102397325 B1 KR102397325 B1 KR 102397325B1 KR 1020197032477 A KR1020197032477 A KR 1020197032477A KR 20197032477 A KR20197032477 A KR 20197032477A KR 102397325 B1 KR102397325 B1 KR 102397325B1
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synchronization
wireless communication
synchronization signal
synchronized
gnss
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KR20190126204A (ko
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나비드 아베디니
사우라바 란그라오 타빌다르
피터 가알
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퀄컴 인코포레이티드
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0025—Synchronization between nodes synchronizing potentially movable access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
    • H04B7/18589—Arrangements for controlling an end to end session, i.e. for initialising, synchronising or terminating an end to end link
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
KR1020197032477A 2015-07-02 2016-06-03 무선 통신 시스템들에 대한 동기화 Active KR102397325B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14/790,908 2015-07-02
US14/790,908 US11153837B2 (en) 2015-07-02 2015-07-02 Synchronization for wireless communication systems
KR1020177037788A KR102042597B1 (ko) 2015-07-02 2016-06-03 무선 통신 시스템들에 대한 동기화
PCT/US2016/035837 WO2017003645A1 (en) 2015-07-02 2016-06-03 Synchronization for wireless communication systems

Related Parent Applications (1)

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KR1020177037788A Division KR102042597B1 (ko) 2015-07-02 2016-06-03 무선 통신 시스템들에 대한 동기화

Publications (2)

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KR20190126204A KR20190126204A (ko) 2019-11-08
KR102397325B1 true KR102397325B1 (ko) 2022-05-11

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KR1020197032477A Active KR102397325B1 (ko) 2015-07-02 2016-06-03 무선 통신 시스템들에 대한 동기화
KR1020177037788A Active KR102042597B1 (ko) 2015-07-02 2016-06-03 무선 통신 시스템들에 대한 동기화

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Country Link
US (1) US11153837B2 (https=)
EP (2) EP3522624B1 (https=)
JP (2) JP6608464B2 (https=)
KR (2) KR102397325B1 (https=)
CN (2) CN107820722B (https=)
TW (1) TWI693851B (https=)
WO (1) WO2017003645A1 (https=)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10548106B2 (en) * 2015-07-08 2020-01-28 Lg Electronics Inc. Method and device for transmitting/receiving sync signal of device-to-device communication terminal in wireless communication system
US10904848B2 (en) * 2015-07-09 2021-01-26 Lg Electronics Inc. Synchronization method of user equipment in wireless communication system and user equipment using method
CN107852686B (zh) * 2015-07-29 2020-11-13 康维达无线有限责任公司 通信装置和方法
KR102147713B1 (ko) * 2015-09-24 2020-08-25 후아웨이 테크놀러지 컴퍼니 리미티드 동기화 방법, 사용자 기기 및 기지국
EP3404970A4 (en) * 2016-01-15 2019-08-14 LG Electronics Inc. -1- TIME SYNCHRONIZATION PROCEDURE FOR V2V END UNIT
CN107027165B (zh) * 2016-01-29 2019-09-17 电信科学技术研究院 一种同步方法及装置
CN107027164A (zh) * 2016-01-29 2017-08-08 电信科学技术研究院 一种同步方法及装置
WO2017134605A1 (en) * 2016-02-05 2017-08-10 Nokia Technologies Oy Methods and apparatuses for controlling vehicle-to-vehicle interference
US20170280406A1 (en) * 2016-03-25 2017-09-28 Sharp Laboratories Of America, Inc. Synchronization method and apparatus for v2x communications
EP3513616B1 (en) * 2016-09-29 2026-02-11 Huawei Technologies Duesseldorf GmbH Time synchronization for multi-link d2d and cellular communication
EP4047996A1 (en) * 2016-11-01 2022-08-24 LG Electronics Inc. Method and apparatus for transmitting a d2d signal by applying offset in wireless communication system
EP3583807B1 (en) * 2017-02-14 2023-11-22 Telefonaktiebolaget LM Ericsson (publ) Synchronization signal selection
US10568102B2 (en) * 2017-02-23 2020-02-18 Qualcomm Incorporated Usage of synchronization signal block index in new radio
CN111971928B (zh) * 2018-05-10 2022-05-24 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN111727575B (zh) * 2019-01-23 2023-08-04 Lg电子株式会社 Nr v2x的副链路控制信息的发送
US12232061B2 (en) * 2020-09-17 2025-02-18 Qualcomm Incorporated Sidelink synchronization techniques
US11604439B2 (en) 2020-12-28 2023-03-14 Waymo Llc GNSS time synchronization in redundant systems
US12432641B2 (en) * 2021-06-03 2025-09-30 Phasorlab, Inc. Self-organizing hyper sync network
US20230319742A1 (en) * 2022-04-05 2023-10-05 Meta Platforms, Inc. Peripheral time server device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090122782A1 (en) 2007-11-09 2009-05-14 Qualcomm Incorporated Synchronization of wireless nodes
WO2014158064A1 (en) 2013-03-27 2014-10-02 Telefonaktiebolaget L M Ericsson (Publ) A method and a device for selecting a synchronization reference

Family Cites Families (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361824B (en) * 2000-04-27 2004-05-26 Roke Manor Research Improvements in or relating to electronic timing systems
US7304981B2 (en) * 2002-09-09 2007-12-04 Itt Manufacturing Enterprises Inc. Apparatus and method of flywheel time-of-day (TOD) synchronization
KR100539915B1 (ko) * 2003-10-31 2005-12-28 삼성전자주식회사 Ａｇｐｓ 시스템에서 획득 보조 정보 생성 방법
US7315278B1 (en) * 2004-07-30 2008-01-01 Novariant, Inc. Multiple frequency antenna structures and methods for receiving navigation or ranging signals
US7339525B2 (en) * 2004-07-30 2008-03-04 Novariant, Inc. Land-based local ranging signal methods and systems
US7532160B1 (en) * 2004-07-30 2009-05-12 Novariant, Inc. Distributed radio frequency ranging signal receiver for navigation or position determination
US7271766B2 (en) * 2004-07-30 2007-09-18 Novariant, Inc. Satellite and local system position determination
US8199049B2 (en) * 2005-05-26 2012-06-12 Trimble Navigation Limited GNSS post positioning with selected precision
US8358242B2 (en) * 2005-05-26 2013-01-22 Trimble Navigation Limited GNSS post positioning with elongated dither sequence
US7202813B2 (en) * 2005-05-27 2007-04-10 Trimble Navigation Limited GPS reference system providing a synthetic offset vector for dithering a rover station position
US7079075B1 (en) * 2005-06-07 2006-07-18 Trimble Navigation Limited GPS rover station for synthesizing synthetic reference phases for controlling accuracy of high integrity positions
US7292183B2 (en) * 2005-06-08 2007-11-06 Trimble Navigation Limited GPS reference system providing synthetic reference phases for controlling accuracy of high integrity positions
US8024390B2 (en) * 2005-07-01 2011-09-20 Schneider Electric USA, Inc. Automated data alignment based upon indirect device relationships
EP1911322B1 (en) * 2005-07-29 2018-04-18 British Telecommunications public limited company Method and apparatus for communicating data over a data network
US7656352B2 (en) * 2005-09-20 2010-02-02 Novariant, Inc. Troposphere corrections for ground based positioning systems
FR2906422B1 (fr) * 2006-09-22 2008-10-31 Alcatel Sa Repeteur terrestre multi-entrees pour un systeme de diffusion de contenus
US7729336B2 (en) * 2007-03-28 2010-06-01 Harris Corporation Synchronization and timing source priority in an ad-hoc network
KR100895175B1 (ko) * 2007-04-04 2009-05-04 삼성전자주식회사 통신 시스템에서 ｇｐｓ 정보를 이용한 시간 동기화 방법및 장치
KR101315383B1 (ko) * 2007-08-10 2013-10-07 한국과학기술원 Ｇｐｓ 수신기를 사용하지 않는 와이브로 시스템의 소수배주파수 동기 획득 방법 및 장치
US8213405B2 (en) * 2008-02-01 2012-07-03 Qualcomm Incorporated Wireless network synchronization
US8774230B2 (en) * 2009-04-08 2014-07-08 Qualcomm Incorporated Conveying synchronization stratum information
US8730844B2 (en) * 2009-05-04 2014-05-20 Lockheed Martin Corporation Self-forming ad-hoc network system
CN102318387B (zh) 2009-06-19 2013-11-06 华为技术有限公司 信息编码方法
CN101938824B (zh) * 2009-06-29 2013-01-23 中国移动通信集团公司 空口同步方法、设备及系统
US8565169B2 (en) * 2010-01-12 2013-10-22 Qualcomm Incorporated Timing synchronization methods and apparatus
JP5376333B2 (ja) 2010-02-24 2013-12-25 株式会社日立国際電気 無線通信システム
US8576778B2 (en) 2011-01-27 2013-11-05 Telefonaktiebolaget L M Ericsson (Publ) Transfer of synchronization in a hybrid global satellite packet network system
IT1404268B1 (it) * 2011-02-18 2013-11-15 Onetastic S R L Metodo per sincronizzare nel tempo una pluralità di trasmettitori appartenenti ad una rete
CN102183771B (zh) 2011-03-21 2013-02-20 华南理工大学 基于多核处理器的多模gnss软件接收机的实现方法
US20130059592A1 (en) * 2011-09-01 2013-03-07 Qualcomm Incorporated Femtocell timing synchronization using mobile device messaging
US9450691B2 (en) * 2011-09-12 2016-09-20 Continental Teves Ag & Co. Ohg Method and device for synchronizing network subscribers in an on-board network of a vehicle
US9036550B2 (en) * 2011-09-14 2015-05-19 Electronics And Telecommunications Research Institute Method and terminal for direct communication between terminals
KR102049046B1 (ko) 2011-09-14 2019-11-26 한국전자통신연구원 단말간 직접통신 방법 및 이를 지원하는 단말
US10271293B2 (en) * 2011-11-18 2019-04-23 Apple Inc. Group formation within a synchronized hierarchy of peer-to-peer devices
US8787954B2 (en) * 2012-01-12 2014-07-22 Qualcomm Incorporated Method and apparatus for synchronizing a wireless network with an external timing source
WO2013144681A1 (en) * 2012-03-28 2013-10-03 Nokia Corporation Determining a Time Offset
US20130286960A1 (en) 2012-04-30 2013-10-31 Samsung Electronics Co., Ltd Apparatus and method for control channel beam management in a wireless system with a large number of antennas
US9179269B2 (en) * 2012-09-12 2015-11-03 Electronics And Telecommunications Research Institute Method and apparatus for transmitting synchronization signal in talk-around direct communication network
US9787355B2 (en) 2012-10-26 2017-10-10 Qualcomm, Incorporated System and method for communication using hybrid signals
US9198092B2 (en) * 2012-11-05 2015-11-24 Qualcomm Incorporated PSC transmission with time offset for unique small cell identification
US9516595B2 (en) * 2013-03-27 2016-12-06 Qualcomm Incorporated Systems and methods for synchronization within a neighborhood aware network
ES2693463T3 (es) * 2013-05-06 2018-12-11 Intel IP Corporation Descubrimiento y selección de red de acceso
CN103828398A (zh) 2013-07-26 2014-05-28 华为终端有限公司 同步信号的承载方法和用户设备
JP6412872B2 (ja) * 2013-09-27 2018-10-24 京セラ株式会社 ユーザ端末、方法及びプロセッサ
CN105684531B (zh) * 2013-11-01 2019-05-31 瑞典爱立信有限公司 用于选择性地提供用于设备到设备(d2d)通信的同步信息的无线电节点和方法
US9541648B2 (en) * 2013-12-18 2017-01-10 Agco Corporation System and method of communicating GNSS information between mobile machines
WO2015111908A1 (ko) * 2014-01-26 2015-07-30 엘지전자(주) 단말 간 통신을 지원하는 무선 통신 시스템에서 동기 신호 및 동기 채널 전송 방법 및 이를 위한 장치
CN110933658B (zh) * 2014-01-29 2022-11-15 交互数字专利控股公司 用于设备到设备发现或通信的资源选择
US9513388B2 (en) * 2014-03-12 2016-12-06 Sercel Method for providing synchronization in a data acquisition system
JP6533529B2 (ja) * 2014-03-18 2019-06-19 シャープ株式会社 デバイス・ツー・デバイス通信装置および方法
US10341971B2 (en) * 2014-05-09 2019-07-02 Lg Electronics Inc. Method and apparatus for radio interface-based inter-cell synchronization in wireless communication system
US10088309B2 (en) * 2014-05-16 2018-10-02 Qualcomm Incorporated LAN-based barometric altimetry
US10425915B2 (en) * 2014-06-27 2019-09-24 Sharp Kabushiki Kaisha Resource pool access for device to device communications
WO2016011411A2 (en) * 2014-07-17 2016-01-21 Javad Gnss, Inc. Gnss surveying using rtk engine verification
US9565645B1 (en) * 2014-08-05 2017-02-07 Sprint Communications Company L.P. Method for a small cell to wirelessly connect to a grandmaster timing device
WO2016022666A1 (en) * 2014-08-06 2016-02-11 Sharp Laboratories Of America, Inc. Synchronization signals for device-to-device communications
WO2016048067A2 (en) * 2014-09-25 2016-03-31 Samsung Electronics Co., Ltd. Synchronization procedure and resource control method and apparatus for communication in d2d system
EP3205156B1 (en) * 2014-10-10 2020-05-20 Telefonaktiebolaget LM Ericsson (publ) Signal quality measurement for device-to-device communication
WO2016064243A2 (ko) * 2014-10-23 2016-04-28 엘지전자(주) 단말 간 통신을 지원하는 무선 통신 시스템에서 단말 클러스터링을 위한 방법 및 이를 위한 장치
CN107005799B (zh) * 2014-12-08 2020-06-30 Lg 电子株式会社 无线通信系统中执行设备对设备通信的方法和执行该方法的设备
US20180054253A1 (en) * 2014-12-25 2018-02-22 Lg Electronics Inc. Method and device for relaying by device-to-device communication terminal in wireless communication system
US20160212721A1 (en) * 2015-01-16 2016-07-21 Sharp Laboratories Of America, Inc. Method and apparatus for selecting a synchronization signal source for sidelink communcations
WO2016163733A1 (en) * 2015-04-06 2016-10-13 Lg Electronics Inc. Method and apparatus for transmitting relay request indication in wireless communication system
CN107567689B (zh) * 2015-05-14 2019-12-13 瑞典爱立信有限公司 用于在无线网络中同步节点的方法和系统
US9455824B1 (en) * 2015-06-26 2016-09-27 Facebook, Inc. Distributed network synchronization methods and architectures
US10548106B2 (en) * 2015-07-08 2020-01-28 Lg Electronics Inc. Method and device for transmitting/receiving sync signal of device-to-device communication terminal in wireless communication system
KR102063084B1 (ko) * 2016-09-27 2020-01-07 엘지전자 주식회사 무선 통신 시스템에서 장치 대 장치 통신 단말의 동기 신호 송수신 방법 및 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090122782A1 (en) 2007-11-09 2009-05-14 Qualcomm Incorporated Synchronization of wireless nodes
WO2014158064A1 (en) 2013-03-27 2014-10-02 Telefonaktiebolaget L M Ericsson (Publ) A method and a device for selecting a synchronization reference

Also Published As

Publication number Publication date
KR20190126204A (ko) 2019-11-08
EP3522624B1 (en) 2026-04-01
CN112218367B (zh) 2023-08-04
CN107820722B (zh) 2020-10-30
BR112018000049A2 (en) 2018-09-04
JP2018525882A (ja) 2018-09-06
KR20180026405A (ko) 2018-03-12
CN107820722A (zh) 2018-03-20
US11153837B2 (en) 2021-10-19
TW201703570A (zh) 2017-01-16
EP3318093A1 (en) 2018-05-09
EP3522624A1 (en) 2019-08-07
CN112218367A (zh) 2021-01-12
EP3318093B1 (en) 2019-05-22
KR102042597B1 (ko) 2019-11-08
TWI693851B (zh) 2020-05-11
JP6888065B2 (ja) 2021-06-16
JP6608464B2 (ja) 2019-11-20
JP2020025313A (ja) 2020-02-13
WO2017003645A1 (en) 2017-01-05
US20170006568A1 (en) 2017-01-05

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