Low-power wakeup radio for mobile devices
First Claim
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1. A user equipment (UE) comprising:
- a first receiver comprising a low power wake-up receiver (LP-WUR) to monitor a downlink channel for a LP-WUR wake-up signal from an eNodeB, the LP-WUR wake-up signal to comprise a narrow-band signal; and
a second receiver comprising a front end module (FEM), separate from the LP-WUR, to monitor a physical downlink control channel (PDCCH), the FEM comprising;
transmission circuitry to transmit signal data to the eNodeB indicating the UE includes the LP-WUR;
circuitry to execute a power saving mode (PSM) for the FEM to cease monitoring the PDCCH in response to a period of inactivity; and
circuitry to exit the PSM for the FEM to monitor the PDCCH in response to the LP-WUR receiving the LP-WUR wake-up signal from the eNodeB.
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Abstract
Described herein are various wake-up procedures for user equipments (UEs). A UE may include a low power wake-up radio (LP-WUR) separate from a front end module (FEM). The LP-WUR may remain awake continuously (or at high-frequency intervals) and monitor for a wakeup signal, allowing the FEM to remain powered down in the absence of downlink data. When the LP-WUR detects a wakeup signal configured for the LP-WUR, the LP-WUR may be configured to wake up the FEM to receive incoming downlink data. Various network components may be configured to ensure UEs with LP-WURs receive corresponding wake-up signals.
5 Citations
10 Claims
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1. A user equipment (UE) comprising:
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a first receiver comprising a low power wake-up receiver (LP-WUR) to monitor a downlink channel for a LP-WUR wake-up signal from an eNodeB, the LP-WUR wake-up signal to comprise a narrow-band signal; and a second receiver comprising a front end module (FEM), separate from the LP-WUR, to monitor a physical downlink control channel (PDCCH), the FEM comprising; transmission circuitry to transmit signal data to the eNodeB indicating the UE includes the LP-WUR; circuitry to execute a power saving mode (PSM) for the FEM to cease monitoring the PDCCH in response to a period of inactivity; and circuitry to exit the PSM for the FEM to monitor the PDCCH in response to the LP-WUR receiving the LP-WUR wake-up signal from the eNodeB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification