Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-05-07
1999-07-27
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455 69, 455430, 455515, H04Q 720, H04B 700
Patent
active
059307188
ABSTRACT:
A communication system is disclosed as including a plurality of mobile radio telephones, a control unit for transmitting a signaling message to an intended mobile radio telephone, and at least one paging channel through which the control unit is able to transmit the signaling message at varying margin levels. The control unit initially transmits the signaling message at a specified margin level for a predetermined number of attempts and progressively continues to transmit the signaling message at margin levels greater than the specified margin level until the intended mobile radio telephone receives the signaling message. The mobile radio telephones are able to synchronize to the paging channel, monitor messages on the paging channel when the mobile radio telephone is synchronized thereto, receive messages on the synchronized paging channel, and provide a signal to alert a user of the mobile radio telephone that a message is received through the paging channel at a margin level greater than the specified margin level. The alert signal is provided in the form of a visual indicator, an audible indicator, and/or a vibration mechanism.
REFERENCES:
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patent: 5239668 (1993-08-01), Davis
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patent: 5594776 (1997-01-01), Dent
Chennakeshu Sandeep
Rydbeck Nils Rutger Carl
Bost Dwayne D.
Davidson James P.
Ericsson Inc.
Legree Tracy M.
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