[특허]Slot hopped FD/TD/CDMA

Slot hopped FD/TD/CDMA 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/16
출원번호	US-0859175 (1992-03-27)
발명자 / 주소	Bruckert Eugene J. (Arlington Heights IL)
출원인 / 주소	Motorola, Inc. (Schaumburg IL 02)
인용정보	피인용 횟수 : 72 인용 특허 : 0

초록 ▼

In a wireless frequency and time division multiple access (FD/TDMA) communications system having time-slotted communications channels, there is provided a method of and apparatus for hopping wireless communications. It comprises sequencing slot assignments and sequencing frequency assignments, such that a multiplicity of frequencies are thereby usable at each site of a cellular FD/TDMA system without regard to local partitioning among surrounding uses thereof. The effect would be to probablistically reduce the interference, not only by the number of hopping frequencies, but by a factor of the number of time slots per frame.

대표청구항 ▼

In a wireless frequency and time division multiple access, FD/TDMA, communications system for transmitting communication signals, said FD/TDMA system having communication channels defined by a plurality of slots within a frame, a hopped wireless communications device comprising, operatively coupled in series: means for assigning, sequentially by frame, one of said communication signals to at least one slot at a time of said plurality of slots such that each of said plurality of slots is assigned to said communication signal according to a predetermined slot sequence; and means for assigning, sequentially, said one of said communication signals to at least one frequency at a time of a plurality of frequencies such that each of said plurality of frequencies is assigned to said communication signal according to a predetermined frequency sequence, wherein said means for assigning said one of said communication signals to said slot is prime with respect to said means for assigning said one of said communication signals to said frequency.

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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

Slot hopped FD/TD/CDMA 원문보기

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Slot hopped FD/TD/CDMA 원문보기

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