Iterative receiver wake-up for long DRX periods
First Claim
1. A method for communication, comprising:
- in a wireless communication terminal, estimating a wake-up time that is intended to not exceed an occurrence time of a periodic transmission that is addressed to the wireless communication terminal from a wireless network;
at the estimated wake-up time, activating circuitry of the wireless communication terminal for receiving the periodic transmission and synchronizing to downlink signals received from the wireless network; and
in response to finding, upon activating the circuitry and synchronizing to the downlink signals, that a remaining time until the periodic transmission exceeds a predefined time threshold, re-estimating a next wake-up time that is also intended to not exceed the occurrence time of the periodic transmission, and deactivating the circuitry until the re-estimated next wake-up time.
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Accused Products
Abstract
A method for communication includes, in a wireless communication terminal, estimating a wake-up time that is intended to not exceed an occurrence time of a periodic transmission that is addressed to the wireless communication terminal from a wireless network. Circuitry of the wireless communication terminal is activated at the estimated wake-up time for receiving the periodic transmission. In response to finding, upon activating the circuitry, that the estimated wake-up time is too early to coincide with the periodic transmission, a next wake-up time, which is also intended to not exceed the occurrence time of the periodic transmission, is re-estimated, and the circuitry is deactivated until the re-estimated next wake-up time.
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Citations
12 Claims
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1. A method for communication, comprising:
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in a wireless communication terminal, estimating a wake-up time that is intended to not exceed an occurrence time of a periodic transmission that is addressed to the wireless communication terminal from a wireless network; at the estimated wake-up time, activating circuitry of the wireless communication terminal for receiving the periodic transmission and synchronizing to downlink signals received from the wireless network; and in response to finding, upon activating the circuitry and synchronizing to the downlink signals, that a remaining time until the periodic transmission exceeds a predefined time threshold, re-estimating a next wake-up time that is also intended to not exceed the occurrence time of the periodic transmission, and deactivating the circuitry until the re-estimated next wake-up time. - View Dependent Claims (2, 3, 4, 5)
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6. A communication apparatus, comprising:
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a front end; and a processor, which is configured to estimate a wake-up time that is intended to not exceed an occurrence time of a periodic transmission that is addressed to the apparatus from a wireless network, at the estimated wake-up time, to activate circuitry of the communication apparatus for receiving the periodic transmission and synchronizing to downlink signals received from the wireless network, and, in response to finding, upon activating the circuitry and synchronizing to the downlink signals, that a remaining time until the periodic transmission from the wireless network exceeds a predefined time threshold, to re-estimate a next wake-up time that is also intended to not exceed the occurrence time of the periodic transmission, and to deactivate the circuitry until the re-estimated next wake-up time. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification