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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Method and apparatus for performing mobile station assisted hard handoff using off line searching

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04Q-007/38   
미국특허분류(USC) 455/436 ; 455/437
출원번호 US-0013413 (1998-01-26)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Wadsworth
인용정보 피인용 횟수 : 39  인용 특허 : 2
초록
▼

A method and apparatus for minimizing the amount of time that a mobile station is to be out of communication with an "origination" base station while searching for a suitable system to which to perform a mobile station assisted hard handoff. After being directed to search for pilot signals in an alternate frequency band, the mobile station tunes to that alternate frequency and samples the incoming data, storing those samples in memory. When a sufficient number of samples have been stored, the mobile station retunes to the origination frequency. The forwa...

대표
청구항
▼

[ What is claimed is:] [1.] A method for minimizing the amount of time during which communication between a mobile station and a fixed communication system is lost during hard handoff, the method comprising the steps of:(a) tuning a receiver from an origination frequency to an alternative frequency;(b) receiving signals at the alternative frequency from destination base stations;(c) storing the signals received at the alternative frequency;(d) retuning the receiver to the origination frequency;(e) at the mobile station concurrently both:(e1) receiving si...

이 특허에 인용된 특허 (2)

  1. Spock Gregory Peter. Method and system for parallel demodulation of multiple chips of a CDMA signal. USP1999055903550.
  2. Hulsebosch Thomas G. (Palatine IL). Target channel verification in a radiotelephone system. USP1994025285447.

이 특허를 인용한 특허 피인용횟수: 39

  1. Kim, Hye-Jeong. Apparatus and method for inter-rat measurement in a multi mode terminal station. USP2016059357414.
  2. Edlis,Ofir; Shoev,Roni. Background processing and searching for a communication channel. USP2007117301987.
  3. Rainish, Doron; Yellin, Daniel; Spencer, Paul. Battery operated radio receivers having power save by reducing active reception time. USP2003086606490.
  4. Rainish, Doron; Yellin, Daniel; Spencer, Paul. Battery operated radio receivers having power save by reducing active reception time. USP2004086782250.
  5. Sarkar, Sandip; Tiedemann, Jr., Edward G.; Odenwalder, Joseph P.. Handoff in a wireless communication system. USP2003076587446.
  6. Boudreau, Gary David; Dimou, Konstantinos. Handover in heterogeneous radio communication networks based on systematic imbalance differences. USP2016029253702.
  7. Boudreau, Gary David; Dimou, Konstantinos. Handover in heterogeneous radio communication networks based on systematic imbalance differences. USP2017129838928.
  8. Shiu, Da-shan; Wilborn, Thomas B; Rick, Roland Reinhard; Nagaram, Srinivasa Rao; Emani, Chalapathi Rao; Gurumoorthy, Ramachandran; Chao, Jesus; Doerfler, Steve; Ang, Peter; Kunisetti, Srividya; Gho, Gwang-Hyun; Bailey, Thomas Nelson. Inter-frequency neighbor list searching. USP2011118059584.
  9. Shiu,Da shan; Wilborn,Thomas B.; Rick,Roland; Nagaram,Srinivasa Rao; Emani,Chalapathi Rao; Gurumoorthy,Ramachandran; Chao,Jesus; Doerfler,Steve; Ang,Peter; Kunisetti,Srividya; Gho,Gwang Hyun; Bailey,Thomas. Inter-frequency neighbor list searching. USP2008027330452.
  10. Amerga, Messay; Halbhavi, Sudhir. Intra-frequency, inter-frequency and inter-radio access technology searching for neighbor cells within a fixed time duration. USP2011118068834.
  11. Tiedemann, Jr., Edward G.; Glauser, Olivier. Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system. USP2010027664209.
  12. Tiedemann, Jr., Edward G.; Glauser, Olivier. Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system. USP2010017653157.
  13. Tiedemann, Jr.,Edward G.; Glauser,Olivier. Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system. USP2006037010068.
  14. Chen, Tao; Tiedemann, Jr., Edward G.; Saints, Keith W.. Method and apparatus for performing mobile station assisted hard handoff using error correction codes. USP2003046553064.
  15. Chen, Tao; Tiedemann, Jr., Edward G.; Saints, Keith W.. Method and apparatus for performing mobile station assisted hard handoff using error correction codes. USP2004096788748.
  16. Jaisimha, Shree; Fujisawa, Tatsuya; Hingerton, Jason; Thomas, Donald; Ryan, David L.; Kanji, Mohammad Reza. Method and apparatus for utilizing modulation based audio correlation technique for maintaining dynamic FM station list in single tuner variant and assisting alternate frequency switching methodology in single tuner and dual tuner variants. USP2013108548408.
  17. Grilli, Francesco; Malladi, Durga P.. Method and system for communicating content on a broadcast services communication system. USP2010037675944.
  18. Grilli, Francesco; Malladi, Durga P.. Method and system for communicating content on a broadcast services communication system. USP2010017643452.
  19. Grilli, Francesco; Malladi, Durga P.. Method and system for communicating content on a broadcast services communication system. USP2011088010111.
  20. Grilli,Francesco; Malladi,Durga P.. Method and system for communicating content on a broadcast services communication system. USP2006037020109.
  21. Grilli,Francesco; Malladi,Durga P.. Method and system for communicating content on a broadcast services communication system. USP2006037016327.
  22. Odenwalder, Joseph P.. Method and system for performing a handoff in a wireless communication system, such as a hard handoff. USP2009107603123.
  23. Odenwalder, Joseph P.. Method and system for performing a handoff in a wireless communication system, such as a hard handoff. USP2003086603751.
  24. Odenwalder, Joseph P.. Method and system for performing a handoff in a wireless communication system, such as a hard handoff. USP2012058170558.
  25. Odenwalder,Joseph P.. Method and system for performing a handoff in a wireless communication system, such as a hard handoff. USP2007077242935.
  26. Grilli, Francesco; Willenegger, Serge; Tiedemann, Jr., Edward G.. Method and system for performing handoff in wireless communication systems. USP2012068199716.
  27. Chen, Tao; Wolf, Jack K.; Odenwalder, Joseph P.; Tiedemann, Jr., Edward G.; Butler, Brian K.; Wei, Yongbin. Method and system for utilization of an outer decoder in a broadcast services communication system. USP2010087787389.
  28. Ola Richard Svensson SE. Method for improving handovers between mobile communication systems. USP2002056393286.
  29. Rainish,Doron; Schwartz,Erez. Method of saving power by reducing active reception time in standby mode. USP2006087099679.
  30. Grilli, Francesco; Vayanos, Alkinoos Hector; Casaccia, Lorenzo. Methods for forward error correction coding above a radio link control layer and related apparatus. USP2014048694869.
  31. Grilli, Francesco; Vayanos, Alkinoos Hector; Casaccia, Lorenzo. Methods for seamless delivery of broadcast and multicast content across cell borders and/or between different transmission schemes and related apparatus. USP2014088804761.
  32. Chen, Tao; Willenegger, Serge D.; Wei, Yongbin; Vayanos, Alkinoos H.. Multi-media broadcast and multicast service (MBMS) in a wireless communication system. USP2013058451770.
  33. Vayanos, Alkinoos Hector; Grilli, Francesco. Outer coding methods for broadcast/multicast content and related apparatus. USP2012058171381.
  34. Vayanos, Alkinoos Hector; Grilli, Francesco. Outer coding methods for broadcast/multicast content and related apparatus. USP2012058175090.
  35. Vayanos, Alkinoos Hector; Grilli, Francesco. Outer coding methods for broadcast/multicast content and related apparatus. USP2012108291300.
  36. Chu-Rui Chang ; Meng Yee. Precision hard handoff method using pilot beacon distributors. USP2002076424834.
  37. Schwarz, Uwe; Hakalin, Petteri; Tölli, Antti. Radio resource control method in mobile communication system, mobile communication system and network element. USP2009047526289.
  38. Edlis,Ofir; Shoev,Roni. Searching in dual-mode communications system. USP2006087085308.
  39. Shellhammer, Stephen J.; Van Nee, Richard. Spectrum sensing of bluetooth using a sequence of energy detection measurements. USP2015028964692.

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