Wake-Up Receiver Configuration for Low-Power UE Signaling

The patent segments the reception function into two independent parts: a low-power wake-up receiver (WUR) for detecting wake-up signals and a main receiver for full communication. The WUR operates with its own independent WUR cycle separate from the legacy DRX cycle, allowing the UE to listen for wake-up signals more frequently without requiring the main receiver to operate continuously. This segmentation resolves the contradiction by enabling time availability through the WUR while keeping power consumption low by keeping the main receiver dormant until triggered.

The wake-up signal acts as an intermediary between the network and the main receiver. Instead of the main receiver continuously monitoring the channel (which consumes high power), the low-power WUR monitors for wake-up signals that serve as intermediaries to trigger main receiver activation only when necessary. This intermediary mechanism enables the system to maintain UE availability while dramatically reducing power consumption compared to continuous main receiver operation.

The patent introduces a separate WUR cycle that is independent from the legacy DRX cycle. The WUR can be configured with shorter cycles to improve response speed without affecting the main receiver's power consumption. When the WUR detects a wake-up signal, it triggers the main receiver to activate, achieving fast response while the low-power WUR handles the frequent monitoring that would otherwise consume excessive power if performed by the main receiver.

The patent effectively creates a copy of the reception function with different characteristics: the WUR is a simplified, low-power copy of the main receiver that can operate with shorter cycles. This copy handles the frequent wake-up signal detection, while the original main receiver remains powered down until triggered, thus achieving fast response times without the power penalty of continuous main receiver operation.

The patent divides the reception task between two specialized components: the WUR optimized for low-power wake-up signal detection and the main receiver optimized for high-accuracy communication. The WUR uses simplified detection algorithms appropriate for its low-power operation, while the main receiver provides high-accuracy channel decoding when activated. This segmentation allows the system to achieve adequate detection accuracy for wake-up signals using minimal power, reserving high-accuracy processing only when the main receiver is activated for actual communication.

The patent changes the operational parameters of the reception system by introducing the WUR with different detection thresholds and sensitivity settings optimized for wake-up signal detection. The WUR can detect wake-up signals with lower power consumption by using parameter settings tailored to the specific characteristics of wake-up signals, rather than using the main receiver's high-accuracy parameters continuously. This parameter optimization enables accurate detection at lower power levels.