Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1998-08-03
1999-05-04
To, Doris H.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455 671, 455572, 455575, 455127, 455343, H04B 100
Patent
active
059013613
ABSTRACT:
A mobile communications apparatus monitors the power level of its internal battery power supply, and reports the measured power information on a periodic basis to a serving network. These reports are preferably made during the course of an ongoing call communications utilizing an uplink communications channel. The reported power information is stored by the network. In response to a subsequent detection of an instance of a call drop with respect to that mobile communications apparatus, the stored reported power information is retrieved and processed to determine whether failure of the battery for the mobile communications apparatus is a likely cause of the call drop. If such is the determination, that fact is noted in association with recording the instance of the call drop as the drop cause.
REFERENCES:
patent: 4679244 (1987-07-01), Kawasaki et al.
patent: 4736461 (1988-04-01), Kawasaki et al.
patent: 4761824 (1988-08-01), Saito
patent: 5142563 (1992-08-01), Nyuu et al.
patent: 5497507 (1996-03-01), Komaki
patent: 5559527 (1996-09-01), Quinn
patent: 5590177 (1996-12-01), Vilmur et al.
patent: 5603095 (1997-02-01), Uola
Telefonaktiebolaget L M Ericsson (publ)
To Doris H.
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