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System and method for switching between base stations in a wireless communications system

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/20
출원번호 US-0973399 (2001-10-09)
발명자 / 주소
  • Chuah,Mooi Choo
  • Khan,Farooq Ullah
출원인 / 주소
  • Lucent Technologies Inc.
인용정보 피인용 횟수 : 12  인용 특허 : 27

초록

A base station switching system includes a wireless unit that waits before switching from a previous base station to a new base station after the wireless unit has indicated to the wireless communications system the identity of the new base station. Thus, the wireless unit continues to receive data

대표청구항

The invention claimed is: 1. A method of switching between a previous base station and a new base station in a wireless communications system having a shared downlink data channel that carries downlink data from the wireless communication system to at least one wireless unit, said method comprising

이 특허에 인용된 특허 (27)

  1. Takai, Kenichi, Adaptive antenna directivity control method and system therefor.
  2. Rune Goran,SEX, Adaptive mobile station presence verification.
  3. Vance Kenneth Ronald ; Jungerman ; Jr. Edward Ernest, Alpha enhanced paging and voice mail system and method.
  4. Tiedemann ; Jr. Edward G. ; Sarkar Sandip, Cellular communication system with common channel soft handoff and associated method.
  5. Ejzak Richard Paul ; Laha Subhasis ; Kumar Sarath ; Knisely Douglas ; Nanda Sanjiv ; I Chih-Lin, Code division multiple access system providing enhanced load and interference based demand assignment service to users.
  6. Park, Su-Won; Yoon, Soon-Young; Ahn, Jae-Min, Handoff method in a mobile communication system supporting transmission diversity.
  7. Muszynski Peter,FIX, Inter-exchange soft handoff in a cellular telecommunications system.
  8. Mitts H.ang.kan,FIX ; Immonen Jukka,FIX ; Hansen Harri,FIX, Maintaining the composition of transferred data during handover.
  9. Wiberg, Niclas; Rimhagen, Thomas, Method and apparatus for broadcasting system information in a cellular communications network.
  10. Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
  11. Corriveau Michel,CAX ; Houde Michel,CAX, Method and apparatus for inter-exchange hand-off taking into account the service capabilities of the candidate cell.
  12. Dolan, Michael F., Method and apparatus for permitting direct handoff between base stations in a wireless network.
  13. Esteves Eduardo A. S. ; Pankaj Rajesh ; Black Peter J. ; Grob Matthew S. ; Sindhushayana Nagabhushana T., Method and apparatus for variable and fixed forward link rate control in a mobile radio communications system.
  14. Forssell, Mika; Parantainen, Janne; Hamiti, Shkumbin, Method and arrangement for providing fast cell change in a packet-switched cellular radio system.
  15. Rinne, Mika; Laitinen, Lauri, Method and system for controlling radio communications network and radio network controller.
  16. Vialen, Jukka; Rinne, Mikko J.; Salonaho, Oscar; Laaksonen, Niina, Method and system for performing handover in a mobile communication system.
  17. Famolari, David; Marples, David J., Method and system for soft handoff of mobile terminals in IP wireless networks..
  18. Raith Krister A. (Durham NC) Dent Paul W. (Stehag SEX), Method of and apparatus for selective resynchronization in a digital cellular communications system.
  19. Sunay Oguz ; Hottinen Ari,FIX ; Teittinen Marko,FIX, Power control of mobile station transmissions during handoff in a cellular system.
  20. Kumar, Sarath; Nanda, Sanjiv; Rubin, Harvey; Vitebskiy, Stanislav, Primary transfer for simplex mode forward-link high-speed packet data services in CDMA systems.
  21. Iseyama Takayuki,JPX, Radio channel assignment method.
  22. Mazawa, Shiro; Ishida, Kazuhito, Radio communication system and handoff method therefor.
  23. Mohebbi, Behzad; Shearme, Michael John, Reducing interference in cellular mobile communications networks.
  24. Yoshinari Kumaki JP; Keiji Tsunoda JP; Shigeo Matsuzawa JP; Noriyasu Kato JP; Osamu Moriya JP; Toshio Okamoto JP, Router device, datagram transfer method and communication system realizing handoff control for mobile terminals.
  25. Brink Stephan ten,DEX ; van Nee Richard D. J.,NLX, Soft handover system for a multiple sub-carrier communication system and method thereof.
  26. Toskala, Antti; Holma, Harri, Universal mobile telecommunications system (UMTS) terrestrial radio access (UTRA) frequency division duplex (FDD) downlink shared channel (DSCH) power control in soft handover.
  27. Moelard Hendrik (Maarssen NLX) Monteban Leo (Nieuwegein NLX), Wireless local area network system with mobile station handover.

이 특허를 인용한 특허 (12)

  1. Pekonen, Harri; Vesma, Jussi, Advanced handover in phased-shifted and time-sliced networks.
  2. Okamoto,Hideki; Yuge,Mariko, Communication terminal and communication method thereof.
  3. Dick, Stephen G.; Terry, Stephen E.; Zhang, Guodong; Miller, James M.; Shin, Sung-Hyuk, Enhanced uplink operation in soft handover.
  4. Bosch, Peter; Mullany, Francis Joseph; Viswanathan, Harish, Fine grain downlink active set control.
  5. Yoon, Young C.; Sun, Li-Hsiang; Lee, Suk Woo, Joint orthogonal frequency-division multiplexing (OFDM) and multi-carrier code division multiple access (MC-CDMA) transmission and fast cell switching for circuit switching traffic.
  6. Gholmieh, Aziz; Gaal, Peter; Tiedemann, Jr., Edward G, Method and apparatus for controlling communications of data from multiple base stations to a mobile station in a communication system.
  7. Gholmieh, Aziz; Gaal, Peter; Tiedemann, Jr., Edward G., Method and apparatus for controlling communications of data from multiple base stations to a mobile station in a communication system.
  8. Backlund, Ingemar; Mildh, Gunnar; Diachina, John; Tedenvall, Lars, Method and system for base station change of packet switched communications in a mobile communications system.
  9. Nagaraj, Shirish; Vasudevan, Subramanian, Method to control the effects of out-of-cell interference in a wireless cellular system using backhaul transmission of decoded data and formats.
  10. Kobayashi, Kazunari; Kumagai, Tomonori; Tomita, Tetsuo; Ikeda, Eiji, Radio network controller.
  11. Zhang, Guodong; Shin, Sung-Hyuk; Terry, Stephen E.; Miller, James M.; Dick, Stephen G., Supporting enhanced uplink transmission during soft handover.
  12. Zhang, Guodong; Shin, Sung-Hyuk; Terry, Stephen E.; Miller, James M.; Dick, Stephen G., Supporting enhanced uplink transmission during soft handover.
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