[특허]Airborne radiotelephone communications system

Airborne radiotelephone communications system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-007/20
출원번호	US-0272060 (1994-07-08)
발명자 / 주소	Gilhousen Klein S. (Bozeman MT)
출원인 / 주소	QUALCOMM Incorporated (San Diego CA 02)
인용정보	피인용 횟수 : 92 인용 특허 : 0

초록 ▼

The airborne communication system enables one or more radiotelephones to communicate with a ground based cellular radiotelephone system. In the preferred embodiment, the aircraft is equipped with a repeater that relays a signal from the airborne radiotelephone to the ground base station and vice versa. Alternate embodiments use an airborne base station to register the radiotelephones before registering them with the ground system. Alternately, the antennas on the ground could be used to form aerial cell sites by pointing the antennas upward to where the aircraft flies through the cells. The system of the present invention provides the additional benefit of enabling the ground based cellular radio systems to source a call to the aircraft radiotelephone.

대표청구항 ▼

A communications system comprising: a code division multiple access (CDMA) ground based subsystem comprising: a plurality of base stations for transmitting communication signals having a quality level and receiving radio signals from an airborne based subsystem, the plurality of base stations being coupled to a public switched telephone network (PSTN); the airborne based subsystem for transmitting the radio signals to, and receiving the communication signals from, a first base station of said plurality of base stations, and if the quality level of said first base station\s communication signal is less than a predetermined amount, transmitting the radio signals to, and receiving the communication signals from, a second base station of said plurality of base stations, the airborne based subsystem comprising: an airborne wireless radio for originating the radio signals and receiving the communication signals and selecting the second base station in response to the quality level of the second base station\s communication signal; and an airborne wireless repeater for repeating the radio signals to the ground based subsystem.

이 특허를 인용한 특허 (92)

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Jochim, Kenneth J.; Polson, Jerry H., Signal translating repeater for enabling a terrestrial mobile subscriber station to be operable in a non-terrestrial environment.
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Seligsohn, Sherwin I.; Seligsohn, Scott, Sub-orbital, high altitude communications system.
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Knoblach, Gerald M.; Frische, Eric A.; Barkley, Bruce Alan, Systems and applications of lighter-than-air (LTA) platforms.
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Knoblach, Gerald M.; Frische, Eric A.; Barkley, Bruce Alan, Systems and applications of lighter-than-air (LTA) platforms.
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Knoblach, Gerald M.; Frische, Eric A.; Barkley, Bruce Alan, Systems and applications of lighter-than-air (LTA) platforms.
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Knoblach, Gerald M.; Frische, Eric A., Unmanned lighter-than-air-safe termination and recovery methods.
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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

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Airborne radiotelephone communications system 원문보기

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Airborne radiotelephone communications system 원문보기

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