Communication unit energy conservation apparatus and method

Details Communication unit energy conservation apparatus and method Communication unit energy conservation apparatus and method

2006-01-24

2006-01-24

Ferguson, Keith T. (Department: 2683)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S572000, C455S550100, C455S552100, C455S553100, C455S343100, C455S343500, C455S343400, C340S007320, C340S007340

Reexamination Certificate

active

06990362

ABSTRACT:
A communication unit (10) can have at least a first receiver (11) and a second receiver (12). The latter typically consumes more power than the former during ordinary operation. Pursuant to one embodiment a communication unit can use the lower-power receiver to detect energy on a monitored channel while the second receiver is retained in a reduced power mode of operation. Upon detecting an absence of channel activity the second receiver can be restored to normal operability to effect such activities as are then presently required.

REFERENCES:
patent: 2001/0010689 (2001-08-01), Awater et al.
patent: 2003/0036354 (2003-02-01), Lee et al.
patent: 2003/0228890 (2003-12-01), Falaki
patent: 2004/0092286 (2004-05-01), Stattin et al.

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