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Hand-off method and apparatus in CDMA cellular system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/00
출원번호 US-0937617 (1997-09-25)
우선권정보 JP-0277322 (1996-09-27)
발명자 / 주소
  • Kabasawa Shizuko,JPX
출원인 / 주소
  • NEC Corporation, JPX
대리인 / 주소
    Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
인용정보 피인용 횟수 : 27  인용 특허 : 13

초록 ▼

In a hand-off method in a CDMA cellular system, whether a frequency in use is a frequency layer boundary is determined in response to a notification indicating a deterioration in the frequency in use from a mobile unit. A frequency prepared in both a communication cell and an adjacent cell is select

대표청구항 ▼

[ What is claimed is:] [1.] A hand-off method in a CDMA cellular system, comprising the steps of:determining, in response to a notification indicating a deterioration in a frequency in use from a mobile unit, whether the frequency in use is a frequency layer boundary;selecting a frequency prepared i

이 특허에 인용된 특허 (13)

  1. Hoo John, Base station controlled handoff method and apparatus.
    상세보기
  2. Lomp Gary R. (Centerport NY) La Vean Gilbert (Reston VA) Schilling Donald L. (Sands Point NY), CDMA cellular hand-off apparatus and method.
    상세보기
  3. Natarajan Kadathur S. ; Jan Yih G. ; Peterson Kenneth M., Centralized dynamic channel assignment controller and methods.
    상세보기
  4. Lundqvist Nils Patrik (Ekero SEX) Andersson Claes Hkan (Ekero SEX), Method and an apparatus for handing off mobile station from a first to a second channel in a mobile communication system.
    상세보기
  5. Gilhousen Klein S. (Bozeman MT) Padovani Roberto (San Diego CA) Weaver ; Jr. Lindsay A. (Boulder CO), Method and apparatus for performing handoff between sectors of a common base station.
    상세보기
  6. Averbuch Rod (874 Shambliss La. Buffalo Grove IL 60089) Cimet Israel A. (891 Silver Rock La. Buffalo Grove IL 60089) Lev Valy (1548 Rachel La. Buffalo Grove IL 60089), Method and apparatus for performing handoff in a packet data communication system.
    상세보기
  7. Lee Dong-Wook (Daejeon KRX) Kim Myoung-Jin (Daejeon KRX) Chung Yeoung-Jee (Daejeon KRX), Method and system for providing a different frequency handoff in a CDMA cellular telephone system.
    상세보기
  8. Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatley ; III Charles E. (Del Mar CA), Method and system for providing a soft handoff in communications in a CDMA cellular telephone system.
    상세보기
  9. Jolma Petri (Oulu FIX) Uola Risto (Oulu FIX), Method for making a handover in a CDMA cellular radio system, and a mobile station.
    상세보기
  10. Bruckert Eugene J. (Arlington Heights IL) Vilmur Richard J. (Palatine IL), Method for performing a handoff in a communication system.
    상세보기
  11. Takai Kenichi,JPX ; Watanabe Kyouji,JPX, Method of transmission power control in a cellular mobile communication system and apparatus thereof.
    상세보기
  12. Kusaki Tsutomu,JPX ; Ouchi Toshiya,JPX ; Tanabe Shiro,JPX ; Nanjo Ken,JPX ; Maki Takeshi,JPX, Mobile communication network and control method thereof.
    상세보기
  13. 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.
    상세보기

이 특허를 인용한 특허 (27)

  1. Wurtenberger, Andrew M.; Narendran, Rajveen; Schield, Joseph I.; Vondemkamp, Bret D., Carrier selection based on probable mobility of packet flow.
    상세보기
  2. Morgan, Dennis; Ross, Alan D., Client apparatus and method with key manager.
    상세보기
  3. Ovesjo,Fredrik; Van Der Velde,Himke, Commanding handover between differing radio access technologies.
    상세보기
  4. Schwarz,Uwe; Muszynski,Peter; Rikkinen,Kari, Handovers of user equipment connections in wireless communications systems.
    상세보기
  5. M?ller, Walter G. A., Inter-frequency measurement and handover for wireless communications.
    상세보기
  6. Holma, Harri; Schwarz, Uwe; Muszynski, Peter; Korpela, Sari, Method and apparatus for cell identification for uplink interference avoidance using inter-frequency measurements.
    상세보기
  7. Jeong, Kyeong-In; Van Lieshout, Gert Jan, Method and apparatus for selecting frequency layer for connected mode UE in an MBMS mobile communication system.
    상세보기
  8. Schwarz,Uwe; Muszynski,Peter; Holma,Harri; Korpela,Sari, Method and apparatus for soft handover area detection for uplink interference avoidance.
    상세보기
  9. Schwarz, Uwe; Muszynski, Peter; Holma, Harri; Korpela, Sari; Numminen, Jussi, Method and apparatus for utilizing synchronization information.
    상세보기
  10. Hunkeler,Teresa, Method and system for automated determination of inter-system border thresholds.
    상세보기
  11. Shin,Yeong Jong, Method and system for making handoff between CDMA mobile communication system.
    상세보기
  12. Matsumoto, Norihisa; Saito, Tamio, Method for control hand-off of CDMA system, base station used therefor, and base station controller.
    상세보기
  13. Kwon, Suk-Hyoung, Method for detecting a hand-off target frequency in a cellular mobile telecommunication system.
    상세보기
  14. Kondo, Takayuki, Method, system of performing hand over without adding information of femto base station to peripheral base station announcement information in a wireless communication network.
    상세보기
  15. Kondo, Takayuki, Method, system of performing hand over without adding information of femto base station to peripheral base station announcement information in a wireless communication network.
    상세보기
  16. Kanagawa,Atsushi, Mobile communications system.
    상세보기
  17. Mohebbi, Behzad; Shearme, Michael John, Reducing interference in cellular mobile communications networks.
    상세보기
  18. Sigg, Jason P.; Bhan, Ashish; Shah, Maulik K.; Singh, Jasinder P., Resource allocation based on wireless device motion specified in connection request.
    상세보기
  19. Sigg, Jason P.; Bhan, Ashish; Shah, Maulik K.; Singh, Jasinder P., Resource allocation based on wireless device motion specified in connection request.
    상세보기
  20. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  21. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  22. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  23. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  24. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  25. Mohebbi, Behzad, Soft hand-off in cellular mobile communications networks.
    상세보기
  26. Nagase, Taku, Spread spectrum communication method.
    상세보기
  27. Maupin, Alain, Telecommunications network broadcasting of service capabilities.
    상세보기

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