Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1994-12-27
1996-04-30
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 57, 455 561, H04Q 724
Patent
active
055132430
ABSTRACT:
A person location system comprises radio base stations and a radio central station, all stations being connected to a public switched telephone network. The base stations respectively cover small areas, or "microcells", in one of which is located a user station, and the central station covers an area containing all of the microcells. The central station receives a polling signal containing the user's address via the telephone network and broadcasts a copy of the polling signal. A management center is connected to the telephone network for transmitting the polling signal to the central station when a location demand arises. Each base station is responsive to the polling signal from the central station for returning field intensity data of the user station through the telephone network to the management center if the polling signal identifies the user station.
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Kuntz Curtis
NEC Corporation
Trost William G.
LandOfFree
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