Multiplex communications – Wide area network – Packet switching
Patent
1996-12-26
1998-11-24
Lall, Parshotam S.
Multiplex communications
Wide area network
Packet switching
39520061, 39520063, 39520066, 39520078, 395561, 370458, 370470, 370472, 370476, 370506, 370508, 370509, 370512, 3408252, 3408255, 34082557, 375354, H04J 302, H04J 306, H04J 316
Patent
active
058420070
ABSTRACT:
A method of transferring payload, control and messaging data in a communications system, in a serial data stream at a pre-set bit rate per second is disclosed. The method comprises, transferring a chosen integer number of frames of serial data per second. Each frame comprises a number of timeslots of data. Each timeslot comprises a predetermined number of first bits comprising payload related data or messaging bits and a calculated number of second bits comprising control bits. The calculated number is calculated so that the sum of the predetermined number and the calculated number multiplied by the number of timeslots and the chosen integer number equals the number of bits transferred in one second at the pre-set bit rate. Preferably, bits from the second bits at fixed intervals within the serial data stream comprise a out-of-band communications channel with the stream. Preferably, the pre-set bit rate is synchronized to the clock of a host communications system. A communications system employing the method is further disclosed.
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Douskalis W.: "A Number Theoretic Approach to Time Division Multiplexing" IEEE Transactions on Communications, vol. 38, No. 9, Sep./1990.
Snow Harold J.
Tarsky Anatoly
Barot Bharat
Lall Parshotam S.
Northern Telecom Limited
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