[특허]Method and apparatus for providing a communication link quality indication

Method and apparatus for providing a communication link quality indication 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-013/02
출원번호	US-0190517 (1994-02-01)
발명자 / 주소	Wheatley III Charles E. (Del Mar CA)
출원인 / 주소	QUALCOMM Incorporated (San Diego CA 02)
인용정보	피인용 횟수 : 86 인용 특허 : 0

초록 ▼

A link quality improvement system for a cellular communication system in which portable units are used to facilitate communication of information signals between system users, via at least one cell-site, using code division multiple access spread spectrum communication signals. The system enables users to improve the quality of reverse communication links from the portable units to the cell-site by providing to each system user a link quality signal indicative of power received at the cell-site relative to an optimum level of received power. At a cell-site communicating with a portable unit associated with a particular system user, the portable unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the portable unit for adjusting portable unit transmitter power. The command signals are also accumulated in order to enable generation of a link quality signal in response thereto. In a preferred implementation the link quality signal is an audible interference signal inducing the system user to adjust orientation of the portable communication unit so as to improve signal quality on the reverse link.

대표청구항 ▼

In a communication system in which system users communicate information signals between one another via at least one cell-site using code division multiple access (CDMA) spread spectrum communication signals, a system for improving quality of signals transmitted to said at least one cell-site from a portable communication unit utilized by one of said system users, said cell-site and said portable communication unit each including a transmitter and a receiver wherein said receiver of said portable communication unit is operative to provide an output signal to said one system user, said system comprising: first power measurement means, coupled to said cell-site receiver, for measuring signal power in each CDMA communication signal directed to said cell-site from said transmitter of said portable communication unit; first power adjustment command generator means, coupled to said cell-site transmitter and to said first power measurement means, for generating a first set of power adjustment commands corresponding to deviations in power measurements of said first power measurement means from a first predetermined power level, said cell-site transmitter transmitting said first set of power adjustment commands; means for generating a link quality signal at least partially in response to said first set of power adjustment commands; and summing means for combining said link quality signal with said output signal provided to said one system user; whereby in response to said link quality signal said one system user may adjust the position of said portable communication unit in order to improve said quality of said signals transmitted to said cell-site.

이 특허를 인용한 특허 (86)

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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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연합인증

Method and apparatus for providing a communication link quality indication 원문보기

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Method and apparatus for providing a communication link quality indication 원문보기

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