Method and system for power control in wireless portable...

Details Method and system for power control in wireless portable... Method and system for power control in wireless portable...

2007-03-13

2007-03-13

Nguyen, Duc M. (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S226100, C455S226200, C455S226300, C455S513000, C455S343200

Reexamination Certificate

active

10769044

ABSTRACT:
A method controls the operation of devices which communicate over a wireless communications channel. The method includes determining a parameter of a received signal communicated over the wireless communications channel and determining a minimum threshold value of the received signal. An average duration of fade is determined using the parameter and the minimum threshold. The method detects whether the received signal is less than the minimum threshold value. At least one of the devices is placed in a sleep mode for approximately the average duration of fade in response to the received signal being detected as less than the minimum threshold value. The determined parameter of the received signal may be the root mean square value of the received signal.

REFERENCES:
patent: 6236674 (2001-05-01), Morelli et al.
patent: 6469992 (2002-10-01), Schieder
patent: 6853840 (2005-02-01), Najafi
patent: 6907061 (2005-06-01), Jechoux
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patent: 2003/0193914 (2003-10-01), Lomp et al.
patent: 2004/0190475 (2004-09-01), Hamalainen et al.
patent: 2004/0214616 (2004-10-01), Malcolm

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