Multiplex communications – Wide area network – Packet switching
Patent
1999-10-17
1992-08-25
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 50, H04J 316
Patent
active
051425343
ABSTRACT:
A digital voice-data communication system having a base network control unit coupled to a plurality of fixed transceivers for providing communications to a plurality of portable sets. The base network control unit includes control means for permitting communication between the portable sets within the system, or between the portable sets and a larger external telecommunications network. The system employs frequency hopping, time division multiplexing and demand assigned multiple accessing to permit economy of fixed resources via multiple voice channels for each fixed station transceiver and relatively simple portable sets which may be hand held.
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"Proceedings of the IEEE", Apr. 1987 article entitled Universal Digital Portable Radio Communications, pp. 436-477.
Davidovici Sorin
Giuliani Adrian A.
Simpson Raymond W.
Zaffino Richard J.
Chin Wellington
O'Neill Communications, Inc.
Olms Douglas W.
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