[특허]Communication system

Communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-007/00 H04L-012/28
출원번호	US-0906677 (2001-07-18)
우선권정보	JP-0083026 (1996-11-14)
발명자 / 주소	Sakamoto, Kenichi Kusaki, Tsutomu Murakami, Masaru Yokoyama, Takashi
출원인 / 주소	Hitachi, Ltd.
대리인 / 주소	Antonelli, Terry, Stout & Kraus, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 22

초록 ▼

A communication system includes a control unit, a switch and a diversity hand-over processing unit connected to the control unit and the switch for receiving both a first communication signal received from a radio base station which outputs the hand-over instruction, and a second communication signal received from another radio base station to which the communication signal will be hand-over so as to output one of the first and second communication signals to the associated interface circuit. The diversity hand-over processing unit transmits the communication signal received through the radio base station from the mobile station on the reception side for communication to both the interface circuit associated with the radio base station as a source of hand-over and the interface circuit associated with the radio base station as a destination of hand-over.

대표청구항 ▼

1. A communication apparatus performing a diversity hand-over from a first radio base station to a second radio base station among a plurality of radio base stations when a radio terminal has moved from a first location to a second location, comprising:a plurality of input and output ports;a switch transferring communication signals from said plurality of input ports to at least one of said plurality of output ports in accordance with routing information included in the respective communication signals; anda diversity hand-over processing unit connected to a succeeding side of said switch and including control functions for receiving from a communication source both a first communication signal incoming from said radio terminal through said first radio base station and a second communication signal incoming from said radio terminal through said second radio base station and selecting one of said first and second communication signals to be transferred to a communication destination, and multicasting a communication signal incoming from the communication destination to said first radio base station and said second radio base station. 2. A communication apparatus according to claim 1, further comprising,a plurality of interface units performing transmission and reception of the communication signals between said plurality of radio base stations. 3. A communication apparatus according to claim 1, further comprising:a plurality of interface units performing transmission and reception of the communication signals between said plurality of radio base stations, and between other communication apparatuses. 4. A communication apparatus according to claim 1, a plurality of said diversity hand-over processing units are connected to the succeeding side of said switch in parallel. 5. A communication apparatus performing a hand-over from a first radio base station to a second radio base station among a plurality of radio base stations when a radio terminal has moved from a first location to a second location, comprising:a plurality of input and output ports;a switch transferring communication signals from said plurality of input ports to at least one of said plurality of output ports in accordance with routing information included in the respective communication signals; anda hand-over processing unit connected to a succeeding side of said switch and including control functions for receiving from a communication source both a first communication signal incoming from said radio terminal through said first radio base station and a second communication signal incoming from said radio terminal through said second radio base station, synchronizing said first and second communication signals forming a synchronized communication signal and transferring said synchronized communication signal to a communication destination, and multicasting a communication signal incoming from the communication destination to said first radio base station and said second radio base station. 6. A communication apparatus according to claim 5, further comprising,a plurality of interface units performing transmission and reception of the communication signals between said plurality of radio base stations. 7. A communication apparatus according to claim 5, further comprising:a plurality of interface units performing transmission and reception of the communication signals between said plurality of radio base stations, and between other communication apparatuses. 8. A communication apparatus according to claim 5, a plurality of said diversity hand-over processing units are connected to the succeeding side of said switch in parallel.

이 특허에 인용된 특허 (22)

Kuhnel Thomas,CHX ; Varlese Christopher,CHX, ATM switching architecture for a wireless telecommunications network.
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Freeburg Thomas A. ; Grossman Daniel B. ; Odlyzko Paul, Asynchronous transfer mode radio communications system with handoff and method of operation.
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Yahagi Masahiko (Tokyo JPX), Cellular telephone exchange system which allows setting of connections between the base station transmitter-receivers an.
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Havermans Gerardus M. J. (Hilversum NLX) Van Kleef Joannes P. M. (Hilversum NLX), Communications system, switching exchange and line card.
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Kamm David A. (Tampa FL) Parker Stephen T. (Raleigh NC) Trimmer ; Jr. Merl A. (Cary NC) Trimmer Sherry L. (Cary NC), Data gateway for mobile data radio terminals in a data communication network.
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Hamalainen Jari,FIX ; Jokiaho Timo,FIX, Data transmission in a radio telephone network.
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Raychaudhuri Dipankar ; Li Jun ; Acharya Arup, Handoff method for an ATM wireless network wherein both the switch and the mobile buffer cells and the mobile controls when the handoff will occur.
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Tayloe Daniel Richard ; Wild Johanna Alexandra ; Bishop ; Jr. James William ; Robinson William Neil,GBX, Method and apparatus for handing off calls between differing radio telecommunication networks.
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Acampora Anthony S. (Freehold NJ) Naghshineh Mahmoud (Fishkill NY), Method and apparatus for supporting mobile communications in asynchronous transfer mode based networks.
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Tuutijarvi Mika,FIX ; Klemetti Raimo,FIX ; Savolainen Jorma,FIX ; Makikallio Eero,FIX, Method for improving handover.
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Sakamoto Masayuki (Yokosuka JPX) Hata Masaharu (Yokosuka JPX), Method of handover and route diversity in mobile radio communication.
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Sakamoto Masayuki (Yokosuka JPX) Hata Masaharu (Yokosuka JPX), Method of handover and route diversity in mobile radio communication.
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Ito Sadao (Yokohama JPX), Mobile communication position registering method and system therefor.
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Hattori Seiji (Tokyo JPX) Kasukawa Akihide (Tokyo JPX) Shibano Yoshizo (Osaka JPX) Kobayashi Yoshinobu (Osaka JPX) Suzuki Shinji (Osaka JPX), Mobile communication system.
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Itoh Sadao (Kanagawa JPX), Mobile communication system.
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Umeda Narumi,JPX ; Nakamura Takehiro,JPX ; Ohno Kouji,JPX ; Shinagawa Noriteru,JPX, Mobile communication system with reliable handover scheme.
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Sollner Michael,DEX, Mobile radio system with improved handover facility.
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Felix Kenneth A. (Crystal Lake IL), Packet-switched cellular telephone system.
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Lorenz Diana Lynne (Naperville IL) Shaw Robert Francis (Clinton NJ) Spanke Ronald Anthony (Wheaton IL), System and method for increasing throughput of inter-network gateways using a hardware assist engine.
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Hemmady Jayant G. (Naperville IL) Spanke Ronald A. (Wheaton IL), System and method for providing soft handoff of a cellular mobile-to-mobile call.
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Sone Yukio (Kawasaki JPX), Variable length data switch and a variable length data relaying method using the variable length data switch.
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Matsumoto Shinji (Amagasaki JPX), Wireless mobile telephone system with zone selection control.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Communication system 원문보기

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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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