[특허]Method for power control in a TDMA spread spectrum communication system

Method for power control in a TDMA spread spectrum communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/16
출원번호	US-0480898 (1995-06-07)
발명자 / 주소	Jensen Ryan N. (Colorado Springs CO) Scott Logan (Breckenridge CO) Williams Claude M. (Colorado Springs CO)
출원인 / 주소	Omnipoint Corporation (Colorado Springs CO 02)
인용정보	피인용 횟수 : 117 인용 특허 : 0

초록 ▼

A simple and flexible over-air protocol for use with a mobile telephone system, having hand-held telephones in a microcell or other type of cellular communication system. A method in which user stations communicate with one or more base stations to place and receive telephone calls, in which the user stations are provided a secure voice or data link and have the ability to handoff calls between base stations while such calls are in progress. Each base station has a set of “air channels”to which it transmits in sequence. The air channels supported by each base station are called that base station\s “polling loop”. A user station receives general polling information on an unoccupied air channel, transmits responsive information to the base station, and awaits acknowledgment from the base station. Each base station may therefore simultaneously maintain communication with as many user stations as there are air channels in its polling loop. The ability of a user station to communicate on any unoccupied air channel makes the protocol air-channel agile, while the stability of user station and base station clocks may define air channels, gaps, and minor frames.

대표청구항 ▼

In a time division multiple access communication system having a base station and a plurality of user stations, a method for closed loop power control comprising the steps of transmitting with a power level, in a designated minor time frame of a major time frame, a pulse signal from a user station to a base station, receiving said pulse signal at said base station, measuring an indication of link quality based on said pulse signal, transmitting, in said designated minor time frame of said major time frame and following said pulse signal, a first spread spectrum signal from said base station to said user station, said first spread spectrum signal comprising a power adjustment command, receiving said first spread spectrum signal at said user station, adjusting said power level at said user station in response to said power adjustment command, transmitting, in said designated minor time frame of said major time frame and following said first spread spectrum signal, a second spread spectrum signal from said user station to said base station, and receiving said second spread spectrum signal at said base station.

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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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Method for power control in a TDMA spread spectrum communication system 원문보기

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Method for power control in a TDMA spread spectrum communication system 원문보기

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