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Method and apparatus for synchronizing communications in a satellite based telecommunications system

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04J-003/06
출원번호 US-0643120 (1996-04-30)
발명자 / 주소
  • Garrison Arthur L.
  • Smigla Terrence R.
  • Stephens Scott A.
출원인 / 주소
  • TRW Inc.
대리인 / 주소
    Yatsko
인용정보 피인용 횟수 : 82  인용 특허 : 5

초록

A method and apparatus are provided, for maintaining synchronous return and forward communications links between user terminals and earth stations communicating via a common satellite in a satellite based telecommunications system. Each user terminal maintains a closed synchronization loop with its

대표청구항

[ We claim:] [1.] A method for maintaining synchronous communications in a satellite based telecommunication system between a user terminal and at least two earth stations, the method comprising the steps of:assigning one earth station as a master earth station and one earth station as a slave earth

이 특허에 인용된 특허 (5)

  1. Palmer Larry C. (Potomac MD) Golding Leonard S. (Potomac MD), Apparatus for and method of broadcast satellite network return-link signal transmission.
  2. Sowles Kenneth L. (Chandler AZ) Gregg Ralph C. (Tempe AZ) Olds Keith A. (Mesa AZ), Apparatus for mobile unit acquisition in a satellite communication system and method therefor.
  3. Ohlson John (Mt. View CA) Natali Francis D. (Pt. Townsend WA), Frequency hopped return link with net entry channel for a satellite personal communications system.
  4. Monte Paul A. (San Jose CA) Wiedeman Robert A. (Los Altos CA) Sites Michael J. (Fremont CA), Method for accounting for user terminal connection to a satellite communications system.
  5. Chennakeshu Sandeep (Cary NC) Hassan Amer A. (Cary NC) Molnar Barbara (Cary NC) Molnar Karl (Cary NC) Ramesh Rajaram (Cary NC), Satellite diversity scheme.

이 특허를 인용한 특허 (82)

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  8. Rakib,Selim Shlomo; Azenkot,Yehuda, Apparatus and method for trellis encoding data for transmission in digital data transmission systems.
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  10. Becker, Donald W.; Leigh, William E. L., Channel encoding and decoding method and apparatus.
  11. Agarwal, Anil; Hariharan, Moorthy, Distribution of routing tables for satellite with reference terminal functionality.
  12. Gorsuch, Thomas E., Dual mode unit for short range, high rate and long range, lower rate data communications.
  13. Gorsuch, Thomas E., Dual mode unit for short range, high rate and long range, lower rate data communications.
  14. Foore, Lawrence R.; Proctor, Jr., James A.; Gorsuch, Thomas E.; Amalfitano, Carlo, Dynamic bandwidth allocation for multiple access communications using buffer urgency factor.
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  27. Agarwal, Anil, Master terminal synchronization for mesh satellite communications.
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  34. Struhsaker, Paul F.; Quinn, Patrick Wilton; Easson, Michael J.; Hudson, Thomas C., Method and system for a micro-channel bank for providing voice, data and multimedia services in a wireless local loop system.
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  39. Carneal,Bruce L.; Zhu,Min; Bradshaw,Steven H., Method and system for frequency spectrum resource allocation.
  40. Struhsaker Paul F. ; Quinn Patrick Wilton ; Easson Michael J. ; Hudson Thomas C., Method and system for protocols for providing voice, data, and multimedia services in a wireless local loop system.
  41. Struhsaker, Paul F.; Quinn, Patrick Wilton; Easson, Michael J.; Hudson, Thomas C., Method and system protocols for providing voice, data, and multimedia services in a wireless local loop system.
  42. Bruas, Patrick, Method for synchronisation and control in wireless communication systems.
  43. Moerder, Karl E., Method of and apparatus for time synchronization in a communication system.
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  45. Boone,Joseph J.; Cheng,Hao; Edsberg,David B. S.; Eyyunni,Venugopal; Maiorana,Jason B., Method, apparatus, and system for demand assignment in a communication network.
  46. Bettinger,David D.; Boone,Joseph J.; Cheng,Hao; Edsberg,David B. S.; Eyyunni,Venugopal; Foley,Conor; Gregory,Christopher D.; Maiorana,Jason B., Method, apparatus, and system for using a synchronous burst time plan in a communication network.
  47. Proctor, Jr., James A., Methods, apparatuses and systems for selective transmission of traffic data using orthogonal sequences.
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  51. Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, Jr., James A., Minimal maintenance link to support synchronization.
  52. Proctor, Jr., James A., Multi-detection of heartbeat to reduce error probability.
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  54. Proctor, Jr.,James A., Multi-detection of heartbeat to reduce error probability.
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  73. Caudill, Harrison, Systems and methods for satellite communications using a space tolerant protocol.
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  76. Bradshaw, Steven H.; Carneal, Bruce L.; Moerder, Karl E.; Theiss-Aird, Michael J., Transmission and reception of TCP/IP data over a wireless communication channel.
  77. Bradshaw, Steven H.; Carneal, Bruce L.; Moerder, Karl E.; Theiss-Aird, Michael J., Transmission and reception of TCP/IP data over a wireless communication channel.
  78. Bradshaw, Steven H.; Carneal, Bruce L.; Moerder, Karl E.; Theiss-Aird, Michael J., Transmission and reception of TCP/IP data over a wireless communication channel.
  79. Proctor, Jr., James A., Transmittal of heartbeat signal at a lower level than heartbeat request.
  80. Proctor, Jr.,James A., Transmittal of heartbeat signal at a lower level than heartbeat request.
  81. Proctor, Jr., James A., Use of correlation combination to achieve channel detection.
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