Asynchronous power management methods and systems for...

Details Asynchronous power management methods and systems for... Asynchronous power management methods and systems for...

2006-12-18

2010-06-29

Urban, Edward (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S574000, C455S041200, C370S318000

Reexamination Certificate

active

07747273

ABSTRACT:
Asynchronous power management methods and systems for a first station and a second station in a wireless network. The second station dynamically tunes a SRI (Schedule Repetition Interval) value according to residual power status, quality-of-service requirements, or other considerations. The SRI value is an odd prime number. Once the SRI is determined, the second station sets the number and positions of ABIs (Awake Beacon Intervals)” within an SRI. An ABI-set defined as the positions of ABIs in an SRI forms a cyclic difference set comprising at least two consecutive BIs. The second station transmits a beacon frame within a beacon window. When the first station has recently received the beacon frame from the second station, the first station predicts the awake/sleep schedule of the second station, and transmits data frames to the second station at the ABI of the second station.

REFERENCES:
patent: 6108316 (2000-08-01), Agrawal et al.
patent: 2003/0081603 (2003-05-01), Rune
patent: 2004/0105401 (2004-06-01), Lee
patent: 2005/0233704 (2005-10-01), Maekawa
patent: 2006/0193315 (2006-08-01), Sinivaara et al.
patent: 2006/0215622 (2006-09-01), Abdel-Kader et al.
patent: 2007/0147423 (2007-06-01), Wentink

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