CN101669341A - Ofdm***中的同步时间差测量 - Google Patents
Ofdm***中的同步时间差测量 Download PDFInfo
- Publication number
- CN101669341A CN101669341A CN200780052797A CN200780052797A CN101669341A CN 101669341 A CN101669341 A CN 101669341A CN 200780052797 A CN200780052797 A CN 200780052797A CN 200780052797 A CN200780052797 A CN 200780052797A CN 101669341 A CN101669341 A CN 101669341A
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- Prior art keywords
- base station
- time
- portable terminal
- time difference
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- 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
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- 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
- H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
-
- 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
- H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
- H04L25/0216—Channel estimation of impulse response with estimation of channel length
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/022—Channel estimation of frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
-
- 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
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
-
- 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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
-
- 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
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (21)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0701043 | 2007-04-30 | ||
SE07010432 | 2007-04-30 | ||
SE0701043-2 | 2007-04-30 | ||
PCT/SE2007/051076 WO2008133567A1 (en) | 2007-04-30 | 2007-12-21 | Synchronization time difference measurements in ofdm systems |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410058040.1A Division CN103929392A (zh) | 2007-04-30 | 2007-12-21 | Ofdm***中的同步时间差测量 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101669341A true CN101669341A (zh) | 2010-03-10 |
CN101669341B CN101669341B (zh) | 2014-03-12 |
Family
ID=39925912
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410058040.1A Pending CN103929392A (zh) | 2007-04-30 | 2007-12-21 | Ofdm***中的同步时间差测量 |
CN200780052797.8A Active CN101669341B (zh) | 2007-04-30 | 2007-12-21 | Ofdm***中的同步时间差测量 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410058040.1A Pending CN103929392A (zh) | 2007-04-30 | 2007-12-21 | Ofdm***中的同步时间差测量 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8102754B2 (zh) |
EP (1) | EP2140646B1 (zh) |
JP (1) | JP5309133B2 (zh) |
CN (2) | CN103929392A (zh) |
ES (1) | ES2478011T3 (zh) |
HK (1) | HK1199681A1 (zh) |
RU (1) | RU2463746C2 (zh) |
WO (1) | WO2008133567A1 (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012109929A1 (zh) * | 2011-02-17 | 2012-08-23 | 中兴通讯股份有限公司 | Lte的时间提前调整方法及基站 |
WO2013044866A1 (zh) * | 2011-09-29 | 2013-04-04 | 华为技术有限公司 | 同步时间差获取方法、装置和*** |
CN104010322A (zh) * | 2013-02-27 | 2014-08-27 | 华为技术有限公司 | 基站间干扰的检测方法、装置及通信*** |
CN106527111A (zh) * | 2016-11-01 | 2017-03-22 | 国网山西省电力公司电力科学研究院 | 一种扩频编码gps信号同步*** |
CN111492702A (zh) * | 2017-12-19 | 2020-08-04 | 高通股份有限公司 | 用于无线通信的时间同步技术 |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8134938B2 (en) * | 2007-05-09 | 2012-03-13 | Lg Electronics | Delay control in a mobile communication system |
KR100904533B1 (ko) * | 2008-01-11 | 2009-06-25 | 엘지전자 주식회사 | 전송 타이밍 조절 방법, 연속적인 패킷 전송 방법 및 이동통신 단말 |
WO2009134103A2 (ko) * | 2008-04-30 | 2009-11-05 | 엘지전자 주식회사 | 시스템 정보 전달 방법 및 서브프레임 구조 |
US20100067604A1 (en) * | 2008-09-17 | 2010-03-18 | Texas Instruments Incorporated | Network multiple antenna transmission employing an x2 interface |
US8693442B2 (en) | 2008-09-22 | 2014-04-08 | Blackberry Limited | Multi-site MIMO cooperation in cellular network |
US8774230B2 (en) * | 2009-04-08 | 2014-07-08 | Qualcomm Incorporated | Conveying synchronization stratum information |
JP2011004099A (ja) * | 2009-06-18 | 2011-01-06 | Fujitsu Ltd | 移動通信システムの移動局、送信タイミング調整装置、送信タイミング調整方法 |
JP4918580B2 (ja) * | 2009-08-27 | 2012-04-18 | 株式会社エヌ・ティ・ティ・ドコモ | 無線基地局、移動局、移動通信方法及び測定方法 |
WO2011075867A1 (en) * | 2009-12-23 | 2011-06-30 | Telefonaktiebolaget L M Ericsson (Publ) | Base station synchronisation |
EP2567583B1 (en) * | 2010-05-06 | 2016-03-09 | Telefonaktiebolaget LM Ericsson (publ) | Method and arrangement in a wireless communication system |
WO2011151662A1 (en) * | 2010-06-02 | 2011-12-08 | Nokia Corporation | Method and apparatus for adjacent-channel emission limit depending on synchronization of interfered receiver |
US20120309415A1 (en) * | 2010-07-21 | 2012-12-06 | Zulutime, Llc | Multipath compensation within geolocation of mobile devices |
US8717920B2 (en) * | 2010-10-08 | 2014-05-06 | Telefonaktiebolaget L M Ericsson (Publ) | Signalling mechanism for multi-tiered intra-band carrier aggregation |
CN105450277B (zh) | 2010-12-10 | 2018-11-20 | 太阳专利托管公司 | 发送方法和发送***以及接收方法和接收装置 |
US9438387B2 (en) * | 2011-07-27 | 2016-09-06 | Lg Electronics Inc. | Method and apparatus for transmitting synchronization signal in wireless communication system |
CN102307385B (zh) * | 2011-08-19 | 2014-09-10 | 电信科学技术研究院 | 一种多载波***中的定位方法、装置及*** |
KR102092579B1 (ko) | 2011-08-22 | 2020-03-24 | 삼성전자 주식회사 | 이동통신 시스템에서 복수 개의 주파수 밴드 지원 방법 및 장치 |
JP6031088B2 (ja) * | 2012-03-19 | 2016-11-24 | 京セラ株式会社 | 移動通信システム、無線基地局及び移動通信方法 |
US9282471B2 (en) | 2012-03-21 | 2016-03-08 | Digimarc Corporation | Positioning systems for wireless networks |
US9258106B2 (en) * | 2012-07-27 | 2016-02-09 | Nec Corporation | Communication apparatus, time synchronization system, and time synchronization method |
US9485678B2 (en) | 2013-03-11 | 2016-11-01 | Qualcomm Incorporated | Effective utilization of cyclic prefix in OFDM systems under benign channel conditions |
CN104349449A (zh) * | 2013-07-24 | 2015-02-11 | 中兴通讯股份有限公司 | 一种全网基站的时钟偏差调整方法及装置 |
US10104661B2 (en) * | 2014-01-22 | 2018-10-16 | Empire Technology Development Llc | Adaptively selecting from among multiple base stations |
CN104202812A (zh) * | 2014-08-14 | 2014-12-10 | 杭州绿宇通信技术有限公司 | 一种适用于精确定位***的高精度时间同步的方法 |
US9924481B2 (en) | 2014-11-07 | 2018-03-20 | Nokia Technologies Oy | Indication of in/out of dual connectivity synchronized condition |
US10433268B2 (en) | 2015-02-02 | 2019-10-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Calculating timing offset in wireless communications |
EP3094141B1 (en) * | 2015-05-12 | 2020-12-16 | Deutsche Telekom AG | Method for radio network synchronization of a mobile communication network with a local clock functionality providing a local timing reference for each base station entity, mobile communication network, base station entity, program and computer program product |
US9668209B1 (en) * | 2016-06-29 | 2017-05-30 | Silicon Laboratories Finland Oy | Listening window adjustments for power savings in bluetooth low energy (BLE) communications |
US10945162B2 (en) * | 2016-09-30 | 2021-03-09 | Kyocera Corporation | Special uplink subframe for enhanced mobility |
US11246107B2 (en) * | 2018-11-02 | 2022-02-08 | Qualcomm Incorporated | Throughput modification for time delayed carriers |
US11140651B2 (en) * | 2018-12-31 | 2021-10-05 | The Regents Of The University Of California | Location determination of wireless communications devices |
JP2022104765A (ja) * | 2020-12-29 | 2022-07-11 | 財團法人工業技術研究院 | 信号センシングのためのシステムと方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1608198A1 (en) * | 2004-06-15 | 2005-12-21 | Samsung Electronics Co., Ltd. | Apparatus and method for supporting soft handover in broadband wireless access communication system |
WO2006082904A1 (ja) * | 2005-02-03 | 2006-08-10 | Kabushiki Kaisha Toshiba | 無線通信端末及びハンドオーバ制御方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69431287T2 (de) | 1993-06-14 | 2003-05-15 | Telefonaktiebolaget Lm Ericsson, Stockholm | Übertragungszeitjustierung in der abwärtsverbindung eines systems mit kodemultiplex-vielfachzugriff |
GB2301751B (en) * | 1995-06-02 | 2000-02-09 | Dsc Communications | Control message transmission in telecommunications systems |
US5940765A (en) * | 1996-08-30 | 1999-08-17 | Telefonaktiebolaget Lm Ericsson | Radio communications systems and methods for jittered beacon transmission |
JP2845228B2 (ja) * | 1996-12-10 | 1999-01-13 | 日本電気株式会社 | 隣接セル同期検出方式 |
US5872774A (en) * | 1997-09-19 | 1999-02-16 | Qualcomm Incorporated | Mobile station assisted timing synchronization in a CDMA communication system |
FI106283B (fi) * | 1998-01-21 | 2000-12-29 | Nokia Mobile Phones Ltd | Solukkoradiosynkronointi |
US6111919A (en) | 1999-01-20 | 2000-08-29 | Intellon Corporation | Synchronization of OFDM signals |
US7039001B2 (en) | 2002-10-29 | 2006-05-02 | Qualcomm, Incorporated | Channel estimation for OFDM communication systems |
US7254196B2 (en) * | 2002-11-26 | 2007-08-07 | Agere Systems Inc. | Symbol timing for MIMO OFDM and other wireless communication systems |
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 |
US7116632B2 (en) | 2003-06-05 | 2006-10-03 | Meshnetworks, Inc. | System and method for determining synchronization point in OFDM modems for accurate time of flight measurement |
KR100827105B1 (ko) * | 2004-02-13 | 2008-05-02 | 삼성전자주식회사 | 광대역 무선 통신 시스템에서 고속 레인징을 통한 빠른핸드오버 수행 방법 및 장치 |
US8165167B2 (en) * | 2005-03-10 | 2012-04-24 | Qualcomm Incorporated | Time tracking for a communication system |
US7656850B2 (en) | 2005-10-11 | 2010-02-02 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for accelerated super 3G cell search |
-
2007
- 2007-12-21 JP JP2010506125A patent/JP5309133B2/ja active Active
- 2007-12-21 EP EP07861171.2A patent/EP2140646B1/en active Active
- 2007-12-21 CN CN201410058040.1A patent/CN103929392A/zh active Pending
- 2007-12-21 CN CN200780052797.8A patent/CN101669341B/zh active Active
- 2007-12-21 US US11/962,168 patent/US8102754B2/en active Active
- 2007-12-21 RU RU2009144135/08A patent/RU2463746C2/ru active
- 2007-12-21 WO PCT/SE2007/051076 patent/WO2008133567A1/en active Application Filing
- 2007-12-21 ES ES07861171.2T patent/ES2478011T3/es active Active
-
2015
- 2015-01-05 HK HK15100054.6A patent/HK1199681A1/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1608198A1 (en) * | 2004-06-15 | 2005-12-21 | Samsung Electronics Co., Ltd. | Apparatus and method for supporting soft handover in broadband wireless access communication system |
WO2006082904A1 (ja) * | 2005-02-03 | 2006-08-10 | Kabushiki Kaisha Toshiba | 無線通信端末及びハンドオーバ制御方法 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012109929A1 (zh) * | 2011-02-17 | 2012-08-23 | 中兴通讯股份有限公司 | Lte的时间提前调整方法及基站 |
WO2013044866A1 (zh) * | 2011-09-29 | 2013-04-04 | 华为技术有限公司 | 同步时间差获取方法、装置和*** |
CN103037406A (zh) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | 同步时间差获取方法、装置和*** |
CN104010322A (zh) * | 2013-02-27 | 2014-08-27 | 华为技术有限公司 | 基站间干扰的检测方法、装置及通信*** |
CN104010322B (zh) * | 2013-02-27 | 2018-05-04 | 华为技术有限公司 | 基站间干扰的检测方法、装置及通信*** |
CN106527111A (zh) * | 2016-11-01 | 2017-03-22 | 国网山西省电力公司电力科学研究院 | 一种扩频编码gps信号同步*** |
CN106527111B (zh) * | 2016-11-01 | 2018-12-11 | 国网山西省电力公司电力科学研究院 | 一种扩频编码gps信号同步*** |
CN111492702A (zh) * | 2017-12-19 | 2020-08-04 | 高通股份有限公司 | 用于无线通信的时间同步技术 |
CN111492702B (zh) * | 2017-12-19 | 2022-06-14 | 高通股份有限公司 | 用于无线通信的时间同步技术 |
Also Published As
Publication number | Publication date |
---|---|
CN103929392A (zh) | 2014-07-16 |
US20100265968A1 (en) | 2010-10-21 |
US8102754B2 (en) | 2012-01-24 |
RU2463746C2 (ru) | 2012-10-10 |
EP2140646A4 (en) | 2012-07-04 |
JP5309133B2 (ja) | 2013-10-09 |
ES2478011T3 (es) | 2014-07-18 |
EP2140646B1 (en) | 2014-02-12 |
WO2008133567A1 (en) | 2008-11-06 |
RU2009144135A (ru) | 2011-06-10 |
EP2140646A1 (en) | 2010-01-06 |
JP2010526475A (ja) | 2010-07-29 |
HK1199681A1 (zh) | 2015-11-06 |
CN101669341B (zh) | 2014-03-12 |
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