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Using geographical coordinates to determine mobile station time position for synchronization during diversity handover

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/20
출원번호 US-0998934 (2001-12-03)
발명자 / 주소
  • Johansson, Staffan
  • Jonsson, Erik
출원인 / 주소
  • Telefonaktiebolaget LM Ericsson (publ)
대리인 / 주소
    Nixon &
인용정보 피인용 횟수 : 11  인용 특허 : 30

초록

A telecommunications system comprises a source base station (BSS), a destination base station (BSD) having a synchronization searcher (s), and a synchronization start position determination unit (101) which establishes a start position (SP) of a synchronization search window for the synchronization

대표청구항

1. A method of operation a code division multiple access communication system having a source base station and a destination base station where a specified mobile station establishes a connection with the source base station, the method comprising:initiating a handover of the connection involving sp

이 특허에 인용된 특허 (30)

  1. Chennakeshu Sandeep (Schenectady NY) Koilpillai Ravinder D. (Lathan NY) Toy Raymond L. (Lathan NY), Adaptive phase-locked loop employing channel state information estimation from received signal phase angles.
  2. Witter Robert C., Artificial window size interrupt reduction system for CDMA receiver.
  3. Levin Jeffrey A. (San Diego CA) Werner David E. (San Diego CA) Easton Kenneth D. (San Diego CA), Cell site demodulation architecture for a spread spectrum multiple access communication systems.
  4. Vaara Tomi,FIX, Cellular mobile station system.
  5. Blakeney ; II Robert D. (San Diego CA) Weaver ; Jr. Lindsay A. (Boulder CO) Ziv Noam A. (San Diego CA) Williamson Paul T. (San Diego CA) Padovani Roberto (San Diego CA), Demodulation element assignment in a system capable of receiving multiple signals.
  6. Parr Michael I. (San Diego CA) Watson John L. (San Diego CA) Vishwanath T. G. (San Diego CA), Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver.
  7. Mitra Sanjit K. (Santa Barbara CA) Abreu Eduardo (Goleta CA) Marchesani Rossano (Chieti ITX), Method and apparatus for multipath channel shaping.
  8. Sutton Todd R., Method and apparatus for performing search acquisition in a CDMA communication system.
  9. Sutton Todd R. (San Diego CA), Method and apparatus for performing search acquisition in a CDMA communications system.
  10. Yu-Cheun Jou, Method and apparatus for performing search acquisition in a multi-carrier communication system.
  11. Soliman, Samir S., Method and apparatus for reducing pilot search times utilizing mobile station location information.
  12. Ojanpera Tero (Oulu FIX) Keskitalo Ilkka (Oulu FIX), Method and apparatus for synchronizing subscriber equipment with base stations in a CDMA radio network.
  13. Love Robert Tristan, Method and apparatus of adaptive maximum likelihood sequence estimation using a variable convergence step size.
  14. Jolma Petri (Oulu FIX) Uola Risto (Oulu FIX), Method for making a handover in a CDMA cellular radio system, and a mobile station.
  15. Chen Jiangnan, Method for performing a signal search in a wireless communication system.
  16. Rudrapatna Ashok N. ; Agrawal Dharma P. ; Agrawal Prathima, Method for predicting the location of a mobile station in a mobile communications network.
  17. Lucas Philippe (Palaiseau FRX), Method for selecting propagation paths retained for receiving messages transmitted by CDMA radiocommunication.
  18. Sung-il Byun KR, Method of establishing search window size for a mobile station in a cellular system.
  19. Wilk Heinz,FRX, Method of selecting propagation delays retained for receiving messages transmitted by spread spectrum radio communicati.
  20. Hinz Udo,SEX ; Israelsson Per Viktor,SEX, Methods and apparatus pertaining to handoff in a mobile telecommunication system.
  21. Keskitalo Ilkka,FIX ; Muszynski Peter,FIX ; Jolma Petri,FIX ; Laiho-Steffens Jaana,FIX, Methods for making a faster handover, and a cellular radio systems.
  22. Blakeney ; II Robert D. (San Diego CA) Karmi Gadi (San Diego CA) Tiedemann ; Jr. Edward G. (San Diego CA) Weaver ; Jr. Lindsay A. (San Diego CA), Mobile station assisted soft handoff in a CDMA cellular communications system.
  23. Padovani Roberto (San Diego CA) Hamdy Walid M. (San Diego CA) Bar-David Gil (Kullu INX), Pilot signal searching technique for a cellular communications system.
  24. Molnar Karl ; Ramesh Rajaram ; Hassan Amer Aref ; Molnar Barbara, Position determination using multiple base station signals.
  25. Branislav M. Popovic SE; Frank Georg DE; Matthlas Schulist DE; Goran Klang SE, Search window delay tracking in code division multiple access communication systems.
  26. Hutchison ; IV James A. ; Hughes Robbin D., System and method for rapidly reacquiring a pilot channel.
  27. Teder Paul,SEX ; Larsson Lars Gustav,SEX ; Persson H.ang.kan Anders,SEX, Time alignment of transmission in a down-link of CDMA system.
  28. Agrawal Prathima (New Providence NJ) Anvekar Dinesh K. (North Plainfield NJ) Narendran Balakrishnan (New Providence NJ), Traffic driven channel reservation system for handovers in cellular networks.
  29. Rouhollahzadeh Bagher ; Amirijoo Shahrokh ; Borg Gunnar, Treatment of positioning data during a positioning handover.
  30. Robert Bruno G.,BEX ; Proto James J., Wireless communication network including plural migratory access nodes.

이 특허를 인용한 특허 (11)

  1. LeBoeuf, Steven Francis; Tucker, Jesse Berkley; Aumer, Michael Edward, Apparatus, systems, and methods for measuring environmental exposure and physiological response thereto.
  2. Diao,Xinxi; Du,Jiancheng, Direct amplifying station and positioning method for mobile station thereof.
  3. Sipil��,Juha, Hard handover method, controller and communication system.
  4. LeBoeuf, Steven Francis; Tucker, Jesse Berkley; Aumer, Michael Edward; Just, Steven Matthew, Light-guiding devices and monitoring devices incorporating same.
  5. Gits, Peter Michael; Seavey, Dale James; Novice, David J., Method and system to determine and communicate the presence of a mobile device in a predefined zone.
  6. Abu-Amara, Marwan Hassan, Method for reducing the rate of registration in CDMA-based mobile networks.
  7. LeBoeuf, Steven Francis; Tucker, Jesse Berkley; Aumer, Michael Edward, Methods and apparatus for detecting motion noise and for removing motion noise from physiological signals.
  8. LeBoeuf, Steven Francis; Tucker, Jesse Berkley; Aumer, Michael Edward, Noninvasive physiological analysis using excitation-sensor modules and related devices and methods.
  9. Uchida,Shigenori; Suzuki,Mitsuhiro; Sakoda,Kazuyuki, Radio communication system, radio communication apparatus and radio communication method, and computer program.
  10. Wang,Jian L., System and method for locating optical network elements and calculating span loss based on geographic coordinate information.
  11. LeBoeuf, Steven Francis; Tucker, Jesse Berkley; Aumer, Michael Edward, Wearable monitoring devices having sensors and light guides.
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