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특허 상세정보

Method of handoff between base stations in a wireless communications system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04B-007/00    H04L-012/28   
미국특허분류(USC) 370/310.1; 370/331
출원번호 US-0215969 (1998-12-18)
발명자 / 주소
  • Freeburg, Thomas A.
  • Grossman, Daniel B.
  • Odlyzko, Paul
출원인 / 주소
  • Motorola, Inc.
대리인 / 주소
    Vaas, Randall S.
인용정보 피인용 횟수 : 19  인용 특허 : 13
초록

A radio communications system (10) having a mobile station (30) and at least two base stations (13, 14). ATM radio channels (31, 32) are provided between the remote station and the base stations. Each of the ATM channels supports communication though ATM cells over a common frequency band. When handoff conditions are met for a handoff from the first base station to the second base station, a second virtual path identifier and a second virtual connection identifier are selected for a connection between the second base station and the remote station.

대표
청구항

1. A method of operation of a radio communications system comprising a remote station, a first base station and at least a second base station, having an ATM communication connection established between the remote station and the first base station with at least a first virtual connection identifier, the method comprising the steps of: determining that handoff conditions are met for a handoff to the second base station; selecting a second virtual path identifier and a second virtual connection identifier for a connection between the second base stati...

이 특허에 인용된 특허 (13)

  1. Vercauteren Leo Albert Albertine,BEX ; De Vriendt Johan Andre,BEX, Cell Switching Network.
  2. Raychaudhuri Dipankar (Princeton Junction NJ) Xie Hai (Highland Park NJ) Yuan Ruixi (Plainsboro NJ), Data link control protocols for wireless ATM access channels.
  3. Acampora Anthony S. (Freehold NJ) Naghshineh Mahmoud (Fishkill NY), Method and apparatus for supporting mobile communications in asynchronous transfer mode based networks.
  4. La Porta Thomas F. (Thornwood NY) Ramjee Ramachandran (Matawan NJ) Veeraraghavan Malathi (Atlantic Highlands NJ), Method and system for distributed control in wireless cellular and personal communication systems.
  5. La Porta Thomas F. ; Ramjee Ramachandran ; Veeraraghavan Malathi, Method and system for distributed control in wireless cellular and personal communication systems.
  6. Petri Bernhard (Munich DEX), Method for controlling components of a communication system.
  7. Umeda Narumi,JPX ; Nakamura Takehiro,JPX ; Ohno Kouji,JPX ; Shinagawa Noriteru,JPX, Mobile communication system with reliable handover scheme.
  8. Raychaudhuri Dipankar (Princeton Junction NJ) Xie Hai (Highland Park NJ) Yuan Ruixi (Plainsboro NJ), Multiservices medium access control protocol for wireless ATM system.
  9. Pasternak Eliezer (Palo Alto CA) BenEfraim Gideon (Cupertino CA), Reliable ATM microwave link and network.
  10. Kubo Akihiko (Hyogo JPX) Takahashi Toshiyuki (Hyogo JPX), Ring type ATM network system.
  11. Wang Yao-Tzung,TWX ; Lin Tzung-Pao,TWX ; Huang Nen-Fu,TWX, Seamless handoff for a wireless lan/wired lan internetworking.
  12. Hemmady Jayant G. (Naperville IL) Spanke Ronald A. (Wheaton IL), System and method for providing soft handoff of a cellular mobile-to-mobile call.
  13. Levardon Pascal (Antony FRX), Transmission system for transmitting information at various rates and transmitter station and receiver station suitable.

이 특허를 인용한 특허 (19)

  1. Keidar, Ron; Holcman, Alejandro R.; Burroughs, Kirk A.; Manor, Liron, Adaptive wake-up period of roaming wireless terminals.
  2. Prehofer, Christian, Apparatus and method for improved handover in mesh networks.
  3. Park, Jae Young, Apparatus for monitoring asynchronous transfer mode cells in communication systems.
  4. Ishiguro, Takayuki; Yamada, Mayu; Moon, Sung Uk; Ishii, Hiroyuki; Futakata, Toshiyuki; Dohi, Tomohiro, Control device of mobile communication system.
  5. Carrillo, Steve; Bristow, Paul; Stewart, Alan; Stewart, Richard; Kelley, William, Distributed networking agent and method of making and using the same.
  6. Park, Seong-Soo; Cho, Jin-Ho; Lee, In-Hong; Lee, Jin-Ick, Handover method in wireless telecommunication system supporting USTS.
  7. Hong, Seung Eun; Song, Bong Gee; Eom, Kwang Seop; Cho, Min Hee; Ju, Hyeong Jong, Method and apparatus for performing fast handover through fast ranging in a broadband wireless communication system.
  8. Bernhard,Urs Peter; Gruhl,Stefan; Mueckenheim,Jens, Method and system for enhanced packet transmission in cellular networks.
  9. Leung, Nikolai K. N., Method and system for hard handoff in a broadcast communication system.
  10. Leung,Nikolai K. N., Method and system for hard handoff in a broadcast communication system.
  11. Lim,Byung Keun, Method and system for serving packet dormant handoff in mobile communication system.
  12. Roy,Sumit; Shen,Bo; Sundaram,Vijay, Method for hand-off of a data session.
  13. Marjelund,Pekka; Hartikainen,Jari, Method for managing physical resources of a radio access network.
  14. Park,Jae Hong; Hwang,Woon Hee; Koo,Yeon Sang; Lee,Chong Won; Yang,Shin Hyun; Ye,Jeong Hwa, Method for processing handoff and call in asynchronous mobile communication system.
  15. Chang, Chia-Lan; Huang, Li-Chi, Methods for controlling radio links in a cellular communication system.
  16. Hirahara, Yoshimi, Radio communication system.
  17. Hurtta, Tuija; Greis, Marc, Technique for informing network of voice traffic.
  18. Faccin,Stefano; Saifullah,Yousuf; Sreemanthula,Srinivas; Hurtta,Tuija; Ivanov,Nedko; Bertenyi,Balazs, Technique for setting up calls in mobile network.
  19. Ushiyama, Kentaro, Terminal device, time adjusting method of terminal device and communication system.