Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-12-04
2000-07-11
Vo, Nguyen
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455 313, H04Q 720, H04Q 302, H04Q 914, H04B 700
Patent
active
060885939
ABSTRACT:
Paging systems typically include a network of ground stations or orbiting satellites equipped with transmitters and antennas for transmitting paging messages to small, battery-operated paging receivers that are worn about the person, known as pagers. Conventional pagers are receive-only devices and the network receives no confirmation that paging has been successful. The present invention includes the provision of two-way pagers that contain a transmitter for transmitting an acknowledgment confirming reception of a paging message, and a network of receiving stations able to receive said acknowledgments. The network makes use of advanced phased-array antenna signal processing techniques to render the return link operable with much less transmitter power in the portable unit than employed by the base station.
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Ericsson Inc.
Vo Nguyen
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