Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1995-07-17
1996-04-09
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 59, 379 60, 455 121, 455 331, H04M 1100
Patent
active
055068863
ABSTRACT:
A paging system (10) includes any number of spaced apart transmitters (12), each of which has its own area (15) of coverage. A population of subscriber units (24) freely roams between the areas (15). When a subscriber unit (24) roams to a new area (15), a call is placed from a telephone instrument (22) to a destination controller (28) through the public switched telecommunication network (21). A subscriber ID and location data are transferred to the system (10) during this call. The location data are used internally by the system (10) to route pages to only the transmitters (12) whose areas (15) correspond to the location data, and only these transmitters (12) broadcast the pages. Subscriber units (24) may generate the location data which the system (10) uses in routing pages to transmitters (12). A position-determining receiver (42) may directly obtain location data from a positioning system (34). Alternatively, location data may be obtained from transmissions broadcast by the transmitters (12).
REFERENCES:
patent: 4178476 (1979-12-01), Frost
patent: 4700374 (1987-10-01), Bini
patent: 4833477 (1989-05-01), Tendler
patent: 4870419 (1989-09-01), Baldwin
patent: 5029196 (1991-07-01), Morganstein
patent: 5043736 (1991-08-01), Darnell
patent: 5090050 (1992-02-01), Heffernan
patent: 5099507 (1992-03-01), Mukai et al.
Hall Phillip E.
Maine Kristine P.
Miller Ann K.
Gorrie Gregory J.
Kuntz Curtis
Motorola Inc.
Nielsen Walter W.
Oehling G. J.
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