[특허]TDMA on a cellular communications system PCM link

TDMA on a cellular communications system PCM link 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/06 H04L-007/00
출원번호	US-0085153 (1993-07-02)
발명자 / 주소	Fall Sven O. P. (Upplands Vsby TX SEX) Nilsson Sven E. (Dallas TX) Svensson Sven G. (Vllingby SEX)
출원인 / 주소	Telefonaktiebolaget L M Ericsson (Stockholm SEX 03)
인용정보	피인용 횟수 : 51 인용 특허 : 0

초록 ▼

A cellular radio system, having a mobile services switching center (MSC) coupled to a base station by means of a pulse code modulation (PCM) link, has an apparatus comprising, in the MSC, a transcoder and rate adaptor (TRA) that generates a PCM frame from a plurality of user data blocks, each user data block corresponding to one of a plurality of users and each user data block comprising an integer number of bytes of data. In the PCM frame, each of the plurality of user data blocks occupies an integer number of consecutive bytes of the generated PCM frame, which is then output to the PCM link. The base station includes a channel encoder that generates an air interface frame from a plurality of user data blocks contained in a received PCM frame. The base station may also generate a timing control signal which is received by the MSC. A timing controller in the MSC is responsive to the received timing control signal, and causes the TRA to synchronize output of a generated PCM frame with generation of an air interface frame such that the generated PCM frame will arrive at the base station channel encoder substantially just at a moment when the generated PCM frame is needed by the channel encoder in order to generate the air interface frame without waiting for the generated PCM frame.

대표청구항 ▼

In a cellular radio system having switch means coupled to a base station by means of a pulse code modulation (PCM) link, an apparatus comprising: in the switch means, input means for inputting a plurality of user data blocks, each of the plurality of user data blocks corresponding to one of a plurality of users, and each user data block comprising an integer number of bytes of data; and formatting means, coupled to the input means and to a first end of the PCM link, for generating a PCM frame from the plurality of user data blocks, wherein each of the plurality of user data blocks occupies an integer number of consecutive bytes of the generated PCM frame; and in the base station, input means, coupled to a second end of the PCM link, for receiving a PCM frame; and channel encoding means, coupled to the input means, for generating an air interface frame from a plurality of user data blocks contained in a received PCM frame.

이 특허를 인용한 특허 (51)

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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

TDMA on a cellular communications system PCM link 원문보기

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TDMA on a cellular communications system PCM link 원문보기

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이 특허를 인용한 특허 (51)

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