[특허]Digital cellular network/system with mobile stations communicating with base stations using frequency-hopping and having

Digital cellular network/system with mobile stations communicating with base stations using frequency-hopping and having 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-013/00
출원번호	US-0331518 (1995-02-17)
우선권정보	FI-0002046 (1992-05-06)
국제출원번호	PCT/FI93/00195 (1993-05-06)
§371/§102 date	19950217 (19950217)
국제공개번호	WO-9322849 (1993-11-11)
발명자 / 주소	Poyhonen Petri (Espoo FIX)
출원인 / 주소	Nokia Telecommunications Oy (Espoo FIX 03)
인용정보	피인용 횟수 : 53 인용 특허 : 0

초록 ▼

A digital TDMA/FDMA (Time Division Multiple Access/Frequency division Multiple Access) cellular network system, suitable for a microcellular network and to maximize the advantage to be gained from interference diversity, including base stations forming radio cells, each having a determined static frequency of a channel of the cell and including a first transceiver continuously transmitting control data of the system concerning the cell at the control channel frequency, at least in one predetermined time slot of a TDMA frame. The TDMA frame of the first transceiver includes traffic channels at least in a part of the other time slots. Each base station further includes at least one second transceiver for the traffic channels. The system further includes mobile stations connected to the base stations via a radio path. The traffic channels of the second transceiver units use frequency-hopping, at least in a part of the radio cells, in such a way that, on those traffic channels aligned with the predetermined time slots of the control data of the cell in the first transceiver, substantially all frequencies of the available frequency band, except the control data transmission frequency determined for the cell, belong to the hopping sequence. On those traffic channels which are in the other time slots, substantially all frequencies of the available frequency band belong to the hopping sequence.

대표청구항 ▼

A digital TDMA/FDMA (Time Division Multiple Access/Frequency Division Multiple Access) cellular network system, comprising: a plurality of base stations forming respective radio cells; each said base station having a determined static frequency of a control channel of the respective said radio cell, and comprising a first transceiver transmitting control data of said system concerning the respective said radio cell continuously at said determined static frequency, in at least one predetermined time slot of a TDMA frame having a plurality of time slots and including a plurality of traffic channels in at least a part of others of said time slots; at least some of said base stations each further comprising at least one second transceiver for said traffic channels; a plurality of mobile stations, each effectively connected to a respective said base station via radio; and said system providing a reuse pattern of N radio cells, wherein N is a number corresponding to the total number of carrier frequencies used by all said base stations, each said carrier frequency forming a respective said control channel in a respective one of said radio cells of said reuse pattern, and, in respective radio cells of said reuse pattern, respective said traffic channels of the respective said at least one second transceiver using frequency-hopping sequence such that: on respective traffic channels within time slots corresponding to each said at least one time slot as is being used for transmitting respective control data of the respective radio cell, substantially all of said carrier frequencies except for the respective said carrier frequency on which control data is being transmitted for the respective said radio cell, belong to said frequency-hopping sequence, and on respective traffic channels within said other time slots, substantially all of said carrier frequencies belong to the frequency-hopping sequence, and respective said frequency-hopping sequences for said radio cells of said reuse pattern being mutually non-synchronous.

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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

Digital cellular network/system with mobile stations communicating with base stations using frequency-hopping and having 원문보기

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Digital cellular network/system with mobile stations communicating with base stations using frequency-hopping and having 원문보기

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