IT1278500B1 - Procedimento ed apparecchio per sincronizzarsi su un sistema per comunicazioni tdma via satellite multi-fascio. - Google Patents

Procedimento ed apparecchio per sincronizzarsi su un sistema per comunicazioni tdma via satellite multi-fascio.

Info

Publication number
IT1278500B1
IT1278500B1 IT95RM000427A ITRM950427A IT1278500B1 IT 1278500 B1 IT1278500 B1 IT 1278500B1 IT 95RM000427 A IT95RM000427 A IT 95RM000427A IT RM950427 A ITRM950427 A IT RM950427A IT 1278500 B1 IT1278500 B1 IT 1278500B1
Authority
IT
Italy
Prior art keywords
synchronize
procedure
communications via
via multi
beam satellite
Prior art date
Application number
IT95RM000427A
Other languages
English (en)
Inventor
Daniel Richard Tayloe
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of ITRM950427A0 publication Critical patent/ITRM950427A0/it
Publication of ITRM950427A1 publication Critical patent/ITRM950427A1/it
Application granted granted Critical
Publication of IT1278500B1 publication Critical patent/IT1278500B1/it

Links

Classifications

    • 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
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation
    • 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
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase

Landscapes

  • 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)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
IT95RM000427A 1994-06-30 1995-06-23 Procedimento ed apparecchio per sincronizzarsi su un sistema per comunicazioni tdma via satellite multi-fascio. IT1278500B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/269,273 US5463400A (en) 1994-06-30 1994-06-30 Method and apparatus for synchronizing to a multi-beam satellite TDMA communication system

Publications (3)

Publication Number Publication Date
ITRM950427A0 ITRM950427A0 (it) 1995-06-23
ITRM950427A1 ITRM950427A1 (it) 1996-12-23
IT1278500B1 true IT1278500B1 (it) 1997-11-24

Family

ID=23026561

Family Applications (1)

Application Number Title Priority Date Filing Date
IT95RM000427A IT1278500B1 (it) 1994-06-30 1995-06-23 Procedimento ed apparecchio per sincronizzarsi su un sistema per comunicazioni tdma via satellite multi-fascio.

Country Status (3)

Country Link
US (1) US5463400A (it)
CN (1) CN1121278A (it)
IT (1) IT1278500B1 (it)

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US6356740B1 (en) * 1995-06-30 2002-03-12 Hughes Electronics Corporation Method and system of frequency stabilization in a mobile satellite communication system
US5657323A (en) * 1995-07-24 1997-08-12 Motorola, Inc. Method and apparatus for signal transmission in a communication system
US6272316B1 (en) * 1995-11-17 2001-08-07 Globalstar L.P. Mobile satellite user information request system and methods
US5732387A (en) * 1995-12-04 1998-03-24 Motorola Method and apparatus for call establishment in a satellite communication system
JP3269961B2 (ja) * 1996-02-06 2002-04-02 三菱電機株式会社 マルチビーム衛星通信システムにおけるビーム自動選択切替方法および装置
US5768266A (en) * 1996-02-16 1998-06-16 Hughes Electronics Handset signalling time slot assignment plan for satellite mobile communication
US5822311A (en) * 1996-03-05 1998-10-13 Ericsson Inc. Random access scheme for mobile satellite communications
US6091936A (en) * 1996-03-29 2000-07-18 Ericsson Inc. Method and apparatus for reducing co-channel interference
US5809396A (en) * 1996-03-29 1998-09-15 Motorola, Inc. Radio telecommunication network with selectable ring signal coverage
ZA978516B (en) * 1996-09-30 1998-06-10 Qualcomm Inc Method and apparatus for precorrecting timing and frequency in communication systems.
US5943606A (en) * 1996-09-30 1999-08-24 Qualcomm Incorporated Determination of frequency offsets in communication systems
US5974316A (en) * 1996-12-26 1999-10-26 Motorola, Inc. System and method for enhancing ring alert terminations
GB2325115B (en) * 1997-03-25 2000-07-05 Ico Services Ltd Satellite communications terminal location system and method
FR2765405B1 (fr) * 1997-06-26 1999-10-01 Alsthom Cge Alcatel Antenne pour systeme de telecommunication
US6072986A (en) * 1997-07-31 2000-06-06 Motorola Inc. Method of identifying antenna beams for transmission of ring alert messages
US5974314A (en) * 1997-08-22 1999-10-26 Lockheed Martin Corp. Spacecraft cellular communication system
US5936570A (en) * 1998-03-05 1999-08-10 Teledesic Llc Low-earth orbit satellite acquisition and synchronization system using a beacon signal
US6215780B1 (en) 1998-07-17 2001-04-10 Motorola, Inc. Method and system for synchronous code division multiplexed communications
US6137441A (en) * 1998-09-09 2000-10-24 Qualcomm Incorporated Accurate range and range rate determination in a satellite communications system
US6181912B1 (en) 1998-09-09 2001-01-30 Qualcomm Inc System and method for user terminal clock error measurement and correction
US6487512B1 (en) * 2000-10-16 2002-11-26 Agilent Technologies, Inc. Method and system for synchronizing a time of day clock based on a satellite signal
US6058306A (en) * 1998-11-02 2000-05-02 Hughes Electronics Corporation Compensation of dynamic doppler frequency of large range in satellite communication systems
US6184829B1 (en) * 1999-01-08 2001-02-06 Trueposition, Inc. Calibration for wireless location system
US7783299B2 (en) 1999-01-08 2010-08-24 Trueposition, Inc. Advanced triggers for location-based service applications in a wireless location system
US6424831B1 (en) * 1999-03-30 2002-07-23 Qualcomm, Inc. Apparatus and method for paging a user terminal in a satellite communication system
US6369754B1 (en) 1999-04-02 2002-04-09 Qualcomm Inc. Fine positioning of a user terminal in a satellite communication system
US6283415B1 (en) * 1999-04-29 2001-09-04 Hughes Electronics Corporation Simplified yaw steering method for satellite antenna beam control
US6400927B1 (en) * 1999-08-30 2002-06-04 Motorola, Inc. Method and apparatus for a mapping receiver
EP1208657B1 (en) 1999-08-31 2007-09-19 QUALCOMM Incorporated Apparatus for doppler correction in a wireless communications system
US6701127B1 (en) * 1999-12-16 2004-03-02 General Dynamics Decision Systems, Inc. Burst communications method and apparatus
US6323804B1 (en) * 2000-06-06 2001-11-27 Motorola, Inc. Method and apparatus for GPS time determination
US7092725B2 (en) * 2001-10-25 2006-08-15 Qualcomm Incorporated Aiding beam identification in a satellite system
US20040004951A1 (en) 2002-07-05 2004-01-08 Interdigital Technology Corporation Method for performing wireless switching
GB0329783D0 (en) * 2003-12-23 2004-01-28 Roke Manor Research TDD for satcom application
US8798638B2 (en) 2005-07-20 2014-08-05 Qualcomm Incorporated Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections
US7991362B2 (en) * 2005-07-20 2011-08-02 Qualcomm Incorporated Methods and apparatus for supporting timing and/or frequency corrections in a wireless communications system
US7769375B2 (en) * 2006-02-09 2010-08-03 Eagle River Holdings Llc System and method for communication utilizing time division duplexing
US7583225B2 (en) * 2006-05-18 2009-09-01 The Boeing Company Low earth orbit satellite data uplink
US8296051B2 (en) * 2006-05-18 2012-10-23 The Boeing Company Generalized high performance navigation system
US8213957B2 (en) 2009-04-22 2012-07-03 Trueposition, Inc. Network autonomous wireless location system
US20110122021A1 (en) * 2009-05-22 2011-05-26 Viasat, Inc. Acquisition guard time reduction using triangulation ranging
CA2790461C (en) * 2011-10-06 2016-10-25 The Boeing Company Precise absolute time transfer from a satellite system
CN104579451B (zh) * 2013-10-25 2018-09-14 北京米波通信技术有限公司 一种铱星通信信号接收装置
US9871614B2 (en) * 2014-07-22 2018-01-16 Nippon Telegraph And Telephone Corporation WDM/TDM-PON system and transmission start time correction method thereof
CN105871495B (zh) * 2015-12-29 2018-04-17 中国科学院国家天文台 一种时间同步方法、通信地面站和用户终端
CN107682074B (zh) * 2017-11-08 2024-03-29 南京天际易达通信技术有限公司 一种卫星上行信号发射时间补偿方法、装置及通信系统
CN110677189B (zh) * 2019-10-09 2022-02-15 四川灵通电讯有限公司 低轨卫星多波束检测装置
EP4103957A1 (en) * 2020-02-11 2022-12-21 AST & Science, LLC Geolocation of radio frequency devices using spaceborne phased arrays
CN113381786B (zh) * 2021-06-11 2021-12-21 军事科学院系统工程研究院网络信息研究所 一种多星共位分布式星群天线阵列协同传输方法
CN113645687B (zh) * 2021-09-03 2024-09-17 天地信息网络研究院(安徽)有限公司 一种基于捷变点波束的多用户时间同步方法
CN115065396B (zh) * 2022-05-17 2024-01-26 中国电子科技集团公司第二十九研究所 基于相控阵体制的毫米量级测量精度的星间链路设计方法
CN115002901B (zh) * 2022-06-02 2023-12-22 中国电信股份有限公司 差分定位方法、服务器、基站、终端、设备及存储介质

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US5012254A (en) * 1987-03-26 1991-04-30 Hughes Aircraft Company Plural level beam-forming netowrk
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US5227802A (en) * 1991-12-23 1993-07-13 Motorola, Inc. Satellite system cell management

Also Published As

Publication number Publication date
ITRM950427A1 (it) 1996-12-23
CN1121278A (zh) 1996-04-24
US5463400A (en) 1995-10-31
ITRM950427A0 (it) 1995-06-23

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0001 Granted