Multiplex communications – Wide area network – Packet switching
Patent
1980-05-01
1983-04-26
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 75, 455 12, H04J 306
Patent
active
043815626
ABSTRACT:
The present invention relates to a point-to-multipoint or broadcast TDMA or FDMA satellite arrangement wherein each up-link message unit is intended for reception at one or more geographically dispersed remote receiving sites within a wide service area. In one arrangement of a TDMA or FDMA satellite, the up-link message units are received and each message unit is directed to a transponder and to one or more down-link antenna ports for concurrent transmission to each of the destinations receiving sites for such message. An alternative TDMA satellite arrangement provides for each up-link message unit to be temporarily stored during the receiving frame period and then transmitted in accordance with a predetermined frame format during the appropriate time segments of the subsequent frame period to all of the destinational receiving sites. A technique for providing such predetermined frame format is also disclosed.
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patent: 4160128 (1979-07-01), Texier
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"Japanese Broadcast Satellite" by Ohtake et al., Microwave Journal, vol. 20, No. 9, Sep., 1977, pp. 53-55.
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"General Purpose Packet Satellite Networks" by Jacobs et al., pp. 1448-1467 Proc. of the IEEE, vol. 66, No. 11, Nov. 1978.
"Methods for Achieving High-Capacity Universal Service Satellites" by Reudnink et al., pp. 8.2.1-8.2.6, NTC Conference Record, Birmingham, Ala., vol. 1, Dec. 3-6, 1978.
Bell Telephone Laboratories Incorporated
Olms Douglas W.
Pfeifle Erwin W.
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