Dual-Receiver Wireless Communication with LP-WUS Wake-Up
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Solution Overview
Problem
In wireless communication systems, terminal devices with multiple receivers face challenges in balancing receiving performance and power consumption due to differing power consumption levels among their receivers, particularly when using a low-power wake-up signal (LP-WUS) that compromises mobility and coverage.
Innovation Solution
A method for wireless communication that allows a terminal device to determine a target receiving state based on the power consumption of its receivers, turning off or putting a high-power main receiver into a deep sleep state and using a low-power LP-WUS receiver for energy-efficient signal detection, thereby optimizing power usage and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device uses the main receiver for signal detection, then the receiving performance and coverage are improved, but the power consumption increases
Solution Approach 1:
The terminal device dynamically switches between two receiving states: a first receiving state where the main receiver is turned off or in deep sleep state (low power consumption), and a second receiving state where the main receiver is turned on (high power consumption, high receiving performance). This dynamic state transition allows the device to adapt to different operational requirements, achieving both power saving and reliable reception when needed.
Solution Approach 2:
A wake-up signal mechanism serves as an intermediary between the low-power state and the high-performance state. The terminal device first detects a wake-up signal using a secondary receiver (which consumes less power), and only after detecting this signal does it activate the main receiver. This intermediary mechanism prevents unnecessary activation of the high-power main receiver while ensuring it is activated when actually needed.
2Use of energy by moving object
If the terminal device turns off the main receiver to save power, then the power consumption is reduced, but the mobility and coverage are compromised
Solution Approach 1:
The system performs preliminary detection using a secondary receiver before activating the main receiver. The wake-up signal is detected in advance while the main receiver remains off, allowing the terminal to prepare for upcoming communication without maintaining the main receiver in an active state, thus preserving mobility and coverage capabilities while saving power.
Solution Approach 2:
The terminal device periodically monitors for wake-up signals using the secondary receiver at predetermined intervals rather than continuously operating the main receiver. This periodic monitoring approach maintains the ability to detect signals and maintain mobility/coverage while significantly reducing power consumption compared to continuous operation.
Data Source
AI summary
Provided are a method for wireless communication, a terminal device, and a network device. The method comprises: a terminal device determines a target receiving state, wherein the terminal device comprises a first receiver and a second receiver, the power consumption of the second receiver is less than the power consumption of the first receiver, the target receiving state is a first receiving state or a second receiving state, the first receiving state corresponds to the first receiver being turned off or in a deep sleep state, and the second receiving state corresponds to the first receiver being turned on and in a normal transceiving state.