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Primary Examiner: Brown, Thomas W.
Assistant Examiner:
Attorney: Gurey; Stephen M.

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Title: Digital satellite system and method for serving users of differing capacities

Abstract: In a multibeam digital time-division switched satellite communications system users of differing capacity needs are efficiently served by quantizing the capacity of each ground station and similarly the bit repetition rate of each ground station into integral powers of 2. At the satellite the uplink bitstream transmitted by each ground station is recovered and the higher rate bitstreams are demultiplexed to form plural equal bit rate subchannels at the input to the satellite switch, the number of subchannels formed being equal to the quantized capacity of the associated ground station. After the satellite switch transfers the bits present at the switch inputs from all ground stations to the appropriate switch outputs, a plurality of output subchannels are multiplexed to form the higher bit rate signals, the number of subchannels multiplexed being equal to the quantized capacity of the ground station to which the bits are directed.

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Inventors: Arnold, Hamilton W. (Tinton Falls, NJ, US)

Application Number: 805711
Filing Date: 1977-06-13
Publication_date: 1979-03-20
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Class(es): 370/323 370/324, 455/13.2, 455/13.3
Other Classes:
US Patent Ref:

3535450	Oct, 1970	Vollmeyer	178/50.
3546386	Dec, 1970	Darcey	325/4.
3694580	Sep, 1972	Inose et al.	179/15.
3749839	Jul, 1973	Fornasiero et al.	179/15.
3789142	Jan, 1974	Shimasaki et al.	179/15.
3862373	Jan, 1975	Cohen et al.	179/15.
3958083	May, 1976	Hara et al.	179/15.
3982074	Sep, 1976	Clark	179/15.

Other Refs: Other References: "Satellite Capacity Allocation", AEIN et al., Proceedings of the IEEE, vol. 65, No. 3, Mar. 1977, pp. 332-342.