[특허]Spread spectrum radio communication system

[미국특허] Spread spectrum radio communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-001/69
출원번호	US-0493314 (1995-06-21)
우선권정보	JP-0141981 (1994-06-23)
발명자 / 주소	Saito Naritoshi,JPX
출원인 / 주소	Kabushiki Kaisha Toshiba, JPX
대리인 / 주소	Banner & Witcoff, Ltd.
인용정보	피인용 횟수 : 53 인용 특허 : 6

초록 ▼

According to the system of the present invention, in a base station, a radio transmission characteristic of a forward link is estimated by a parameter estimating section 18b based on a receiving state of a radio signal arrived from a mobile station through a reverse link. Then, RAKE control data to be set to a RAKE receiver of the mobile station is generated based on the result of the estimation, and RAKE control data is notified to the mobile station. On the other hand, in the mobile station, RAKE control data is extracted by a RAKE control data extracting section. Then, a tap coefficient is initialized to be set to a transversal filter of the RAKE receiver based on RAKE control data.

대표청구항 ▼

[ What is claimed is:] [1.] A spread spectrum radio communication system including a function of transmitting an original transmission signal between a base station and a mobile station, and a function of synthesizing a plurality of the same transmission signals received to have a time difference by a signal receiving/reproducing circuit including delay means and synthesizing means so as to reproduce said original transmission signal to said mobile station,said base station comprising:weighting data generating means for generating weighting data to be provided to said synthesizing means of said signal receiving/reproducing circuit in accordance with a characteristic of a radio transmission path between said base station and said mobile station; andweighting data transmitting means for transmitting weighting data obtained by said weighting data generating means, andsaid mobile station comprising:weighting data receiving means for receiving weighting data notified from said base station; andweighting data setting means for setting weighting data received by said weighting data receiving means in said synthesizing means, whereby said synthesizing means synthesizes the received same transmission signals in accordance with said weighting data.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Subramanian Ravi (East Brunswick NJ), All digital maximum likelihood based spread spectrum receiver.
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Dent Paul W. (Stehag SEX), Calling channel in CDMA communications system.
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Weerackody Vijitha (Springfield NJ), Diversity for direct-sequence spread spectrum systems.
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Chow Jacky (Mountain View CA) Cioffi John M. (Cupertino CA), Method for equalizing a multicarrier signal in a multicarrier communication system.
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Sato Toshifumi (Tokyo JPX), Mobile communication system capable of transmitting and receiving a radio signal obtained by TDMA and CDMA without inter.
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Szabo Laszlo (Korntal DEX), Radio system.
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이 특허를 인용한 특허 (53) 인용/피인용 타임라인 분석

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Proctor ; Jr. James A. ; Gainey Kenneth M., Adaptive antenna for use in same frequency networks.
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Gothard, Griffin K.; Keel, Jr., Alton S.; Snyder, Christopher A.; Chiang, Bing; Richeson, Joe T.; Wood, Douglas H.; Proctor, Jr., James A.; Gainey, Kenneth M., Adaptive antenna for use in wireless communication systems.
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Farley, Kevin L.; Proctor, James A., Alternate channel for carrying selected message types.
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Farley, Kevin L.; Proctor, Jr., James A., Alternate channel for carrying selected message types.
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Proctor, Jr., James A., Antenna control system and method.
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Proctor, Jr., James A., Antenna control system and method.
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Proctor, Jr., James A., Antenna control system and method.
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Proctor, Jr., James A., Antenna control system and method.
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Proctor, Jr., James A., Antenna control system and method.
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Dabak, Anand G.; Nafie, Mohammed; Schmidl, Timothy M.; Gatherer, Alan, Beam forming for transmit using bluetooth modified hopping sequences (BFTBMH).
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Dabak,Anand G.; Nafie,Mohammed; Schmidl,Timothy M.; Gatherer,Alan, Beam forming for transmit using bluetooth modified hopping sequences (BFTBMH).
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Kazuyuki Miya JP; Osamu Kato JP, CDMA cellular wireless communication system.
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Hayashi, Masaki; Miya, Kazuyuki; Ue, Toyoki; Hiramatsu, Katsuhiko, CDMA/TDD mobile communication system and method.
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Widell, Svante; Winroth, Mats Olof, Channel simulator for mobile systems.
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Widell, Svante; Winroth, Mats Olof, Channel simulator for mobile systems.
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Kleider John Eric ; Chuprun Jeffery Scott ; Campbell William Michael ; Bergstrom Chad Scott, Communication unit having spectral adaptability.
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Uesugi,Hiroyuki, Delay adjustment device and method, and radio base station apparatus.
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Shousei Yoshida JP; Akihisa Ushirokawa JP, FDD/CDMA transmission/reception system.
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Yamazaki Hiroshi,JPX, Matched filter.
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Regnier,John A.; Proctor, Jr.,James A.; Lynch,Michael J.; Gorsuch,Thomas E., Method and apparatus for adapting antenna array using received predetermined signal.
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Lundby, Stein A., Method and apparatus for power control in a wireless communication system.
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Lundby, Stein Arne, Method and apparatus for power control in a wireless communication system.
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Vihri채l채,Jaakko, Method of processing CDMA signal components.
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Proctor ; Jr. James A. ; Gainey Kenneth M., Method of use for an adaptive antenna in same frequency networks.
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Proctor, Jr., James A., Methods, apparatuses and systems for selective transmission of traffic data using orthogonal sequences.
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Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, Jr., James A., Minimal maintenance link to support sychronization.
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Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, James A., Minimal maintenance link to support synchronization.
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Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, James A., Minimal maintenance link to support synchronization.
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Nelson, Jr., G. Rodney; Hoffmann, John E.; Rouphael, Antoine J.; Proctor, Jr., James A., Minimal maintenance link to support synchronization.
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Proctor, Jr., James A., Multi-detection of heartbeat to reduce error probability.
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Proctor, Jr., James A., Multi-detection of heartbeat to reduce error probability.
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Schilling, Donald L., Multiple-input multiple-output (MIMO) spread-spectrum system and method.
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Saito, Yoshiko; Uesugi, Mitsuru; Kato, Osamu, Radio communication system, communication terminal apparatus, base station apparatus, and radio communication equalizing method.
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Sato,Takaharu; Ueda,Takashi, Receiver and receiving method in spread spectrum communication system.
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Proctor, Jr., James A., Signaling for wireless communications.
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Proctor, Jr., James A., Signaling for wireless communications.
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Kondo, Takayuki, Spectrum spreading communication system using single spreading code.
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Takayuki Kondo JP, Spectrum spreading communication system using single spreading code.
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Takakusaki Keiji,JPX, Spread-spectrum receiver.
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Noboru Yamashita JP, Spreading code synchronization circuit and method.
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Kowalski John M. ; Kandala Srinivas ; Somayazulu V. Srinivasa, System and method for CDMA channel estimation.
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Arnold, Hamilton W.; Devasirvatham, Daniel M., System and method for energy-efficient transmission power control, routing and transmission scheduling in wireless communication networks.
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Proctor, Jr., James A., System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system.
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Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
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Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
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Proctor, Jr., James A., System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system.
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Proctor, Jr., James A., Transmittal of heartbeat signal at a lower level than heartbeat request.
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Proctor, Jr., James A., Use of correlation combination to achieve channel detection.
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Sanji, Kenichiro; Takaoka, Akira; Naito, Hiromichi, Wireless communication system.
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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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[미국특허] Spread spectrum radio communication system 원문보기