Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1994-10-26
1996-06-18
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
370 8, 370 951, 379 57, 379 59, H04Q 728, H04Q 720, H04Q 738, H04Q 708
Patent
active
055286640
ABSTRACT:
A cellular telephone system includes a packet-switched digital data communication subsystem overlaying a circuit-switched (e.g., voice) communication subsystem, with voice and data services sharing the same voice channels. The voice communication subsystem provides voice services independently of the operation of the data communication subsystem. On the other hand, the data communication subsystem monitors use of the voice channels for voice communication, and, in response thereto, temporarily allocates one or more of the available voice channels for data service. In a preferred embodiment, each data basestation transmits, from time to time, an available-channel signature to identify those, if any, of the data-allocated channels that are not then being used to transmit voice or data. For data communication, a remote unit monitors selected voice channels in the coverage area of the cellular telephone system for available-channel signatures, selects one of the channels (if any) identified by the signature thereon as being available for data transmission, and transmits or receives digital information over that channel.
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Andrietz William E.
Gage William A.
Sharman Duane
Slekys Arunas G.
Cumming William
Harris Canada Inc.
Kuntz Curtis
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