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특허 상세정보

Time and frequency synchronizations of equipment at different locations

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04B-007/19   
미국특허분류(USC) 342/357.06; 342/356; 455/013.2
출원번호 US-0498896 (2003-01-10)
우선권정보 GB-0200484(2002-01-10)
국제출원번호 PCT/GB03/000075 (2003-01-10)
§371/§102 date 20050223 (20050223)
국제공개번호 WO03/058863 (2003-07-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Crowell &
인용정보 피인용 횟수 : 43  인용 특허 : 7
초록

Method and apparatus for providing accurately synchronized timing signals at mutually distant locations employs a GPS or similar receiver at each location. These receivers are interconnected by a communications network, and exchange data over the network to agree a common timing reference.

대표
청구항

The invention claimed is: 1. Apparatus for providing synchronization of equipment located at a number of mutually remote locations, comprising at each location: a disciplined frequency reference; a satellite navigation system receiver for providing satellite navigation system data; and processing means for receiving satellite navigation system data from the satellite navigation system receiver, the apparatus being further provided with a network interconnecting the mutually remote locations, characterized in that each of the respective processing means ...

이 특허를 인용한 특허 피인용횟수: 43

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  3. Rovinsky, Jacob. Anti-rocket system. USP2018069995559.
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  5. Smith,Alexander E.; Cohen,Bennett. Correlation of flight track data with other data sources. USP2007077248219.
  6. Smith, Alexander E.. Deployable intelligence and tracking system for homeland security and search and rescue. USP2013058446321.
  7. Smith, Alexander E.; Hulstrom, Russell; Evers, Carl A.. Deployable passive broadband aircraft tracking. USP2010087777675.
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  9. Dzung, Dacfey; Larsson, Mats. Estimating a time offset between stationary clocks. USP2011017865331.
  10. Breen, Thomas J.; Smith, Alexander E.; Rossano, Christopher F.. Extension of aircraft tracking and positive identification from movement areas into non-movement areas. USP2010027667647.
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  12. Adams, Robbin B.; Vajapeyam, Bhasker; Prado, Jesus Eduardo; Carroll, Paul E.; Hallaman, James Michael. Low-power satellite-timed seismic data acquisition system. USP2016029255999.
  13. Adams, Robbin B.; Vajapeyam, Bhasker; Prado, Jesus Eduardo; Carroll, Paul E.; Hallaman, James Michael. Low-power satellite-timed seismic data acquisition system. USP2014118898019.
  14. Smith, Alexander E.; Hulstrom, Russell; Evers, Carl A.; Breen, Thomas J.. Method and apparatus for ADS-B validation, active and passive multilateration, and elliptical surviellance. USP2009087570214.
  15. Smith,Alexander E.. Method and apparatus for improving ADS-B security. USP2008097423590.
  16. Smith,Alexander E.; Cassell,Eric. Method and apparatus to extend ADS performance metrics. USP2008097429950.
  17. Smith,Alexander E.. Method and apparatus to improve ADS-B security. USP2009027495612.
  18. Elam,Daryl B.. Method for locating and tracking communication units in a synchronous wireless communication system. USP2007107289541.
  19. Smith, Alexander E.; Breen, Thomas. Multilateration enhancements for noise and operations management. USP2011027889133.
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  22. Detwiler, Thomas F.. Remote monitoring and calibration of system reference clock using network timing reference. USP2014038670511.
  23. Forenza, Antonio; Perlman, Stephen G.. System and method for DIDO precoding interpolation in multicarrier systems. USP2013108571086.
  24. Forenza, Antonio; Perlman, Stephen G.. System and method for adjusting DIDO interference cancellation based on signal strength measurements. USP2015038971380.
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  26. Forenza, Antonio; Perlman, Stephen G.. System and method for distributed antenna wireless communications. USP2016079386465.
  27. Forenza, Antonio; Perlman, Stephen G.. System and method for distributed antenna wireless communications. USP2014028654815.
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  29. Forenza, Antonio; Perlman, Stephen G.. System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client. USP2017119819403.
  30. Forenza, Antonio; Perlman, Stephen G.. System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters. USP2017119826537.
  31. Forenza, Antonio; Perlman, Stephen G.. System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network. USP20190110187133.
  32. Forenza, Antonio; Perlman, Stephen G.. System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS). USP2016049312929.
  33. Forenza, Antonio; Perlman, Stephen G.. Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology. USP20190110194346.
  34. Forenza, Antonio; Perlman, Stephen G.. Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology. USP20181210164698.
  35. Forenza, Antonio; Perlman, Stephen G.. Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology. USP2018039923657.
  36. Forenza, Antonio; Perlman, Stephen G.. Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology. USP2018059973246.
  37. Forenza, Antonio; Perlman, Stephen G.. Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems. USP2015038989155.
  38. Forenza, Antonio; Lindskog, Erik; Perlman, Stephen G.. Systems and methods to coordinate transmissions in distributed wireless systems via user clustering. USP2016069369888.
  39. Forenza, Antonio; Lindskog, Erik; Perlman, Stephen G.. Systems and methods to coordinate transmissions in distributed wireless systems via user clustering. USP2013098542763.
  40. Forenza, Antonio; Pitman, Timothy A.; Jirasutayasuntorn, Benyavut; Andrzejewski, Robert J.; Perlman, Stephen G.. Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems. USP2017069685997.
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  42. Smith, Alexander E.. Transmitter independent techniques to extend the performance of passive coherent location. USP2012068203486.
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