Adaptive sleep circuit using network timing feedback

A method is disclosed for controlling operation of a battery powered modem to implement power conservation by adaptive modem sleep. The method comprises detecting the presence of a periodic network timing signal and detecting transition of the modem processor to a processing ready condition, wherein...

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Bibliographische Detailangaben
Hauptverfasser:	DIFRANCISCO, LOUIS R, STRATMOEN, SCOTT, TRAINOR, MICHAEL J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A method is disclosed for controlling operation of a battery powered modem to implement power conservation by adaptive modem sleep. The method comprises detecting the presence of a periodic network timing signal and detecting transition of the modem processor to a processing ready condition, wherein received RF signals can be processed. A processor ready signal is generated in response to detection of the processing ready condition and compared in time to occurrence of the network timing signal. A sleep error signal is generated which represents the interval between occurrence of the network timing signal and the processor ready signal. A modem is then directed into a sleep mode for periods of time sufficient to reduce the sleep error signal to be within a predetermined error budget.