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US 2012/0236920 A1Published application
Drx operation with crystal oscillator
AssigneeMarvell World Trade Ltd.
InventorDavid Ben-Eli
Life of this patent
Estimating the term…
Abstract
A method in a receiver includes receiving from a transmitter an instruction to check for messages from the transmitter at intervals having a specified time period. A frequency error of the receiver relative to the transmitter is estimated at the receiver, and an actual time period that does not exceed the specified time period is selected based on the estimated frequency error. The receiver is activated periodically according to the selected actual time period so as to reset the frequency error.
Claims20
A method, comprising:
- in a receiver, receiving from a transmitter an instruction to check for messages from the transmitter at intervals having a specified time period;
- estimating at the receiver a frequency error of the receiver relative to the transmitter, and selecting, based on the estimated frequency error, an actual time period that does not exceed the specified time period;
- and
- activating the receiver periodically according to the selected actual time period so as to reset the frequency error.
1 more element
Apparatus, comprising:
- a receiver, which is configured to receive from a transmitter an instruction to check for messages from the transmitter at intervals having a specified time period, and to estimate a frequency error of the receiver relative to the transmitter;
- and
- control circuitry, which is configured to select, based on the estimated frequency error, an actual time period that does not exceed the specified time period, and to activate the receiver periodically according to the selected actual time period so as to reset the frequency error.
Dependencies are inferred from the claim text.