Wireless Node Wake-Up Signaling for Low-Power False Detection Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in adapting to diverse application scenarios while minimizing power consumption and hardware complexity.
Innovation Solution
Implementing a wake-up signal mechanism that utilizes a target wake-up signal with a first bit sequence generated from a first bit block and a feature sequence, subjected to transform precoding, to determine time-frequency resources and control information, supporting double wake-up confirmation and reducing false wake-up probabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a wake-up signal mechanism is implemented to reduce power consumption, then power consumption is reduced, but the accuracy of wake-up determination may deteriorate due to potential false wake-ups
Solution Approach 1:
The patent applies preliminary action by performing double confirmation of wake-up signals before fully activating the receiver. The first wake-up signal triggers a preliminary wake-up state, and a second wake-up signal is required to confirm the actual wake-up need, preventing false wake-ups while maintaining low power consumption during idle periods
Solution Approach 2:
The patent implements feedback by using the result of the first wake-up signal determination to control the monitoring behavior for the second wake-up signal. When the first wake-up signal is detected, the system transitions to a state where it actively monitors for confirmation signals, creating a feedback loop that balances power saving with reliable wake-up detection
2Reliability
If monitoring for wake-up signals is continuously performed, then wake-up accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by transitioning the receiver between sleep states and active monitoring states based on the periodic arrival of wake-up signal opportunities. Instead of continuous monitoring, the system activates only at specific periodic intervals when wake-up signals may be present, significantly reducing power consumption while maintaining detection capability
Solution Approach 2:
The system performs preliminary detection of wake-up signals in a low-power state before committing to full active monitoring. This preliminary action allows the system to avoid continuous high-power operation while still being able to detect and respond to actual wake-up signals when they occur
Data Source
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AI summary
Disclosed in the present application are a method and apparatus for a node in wireless communications. The method comprises: a node receiving a first information block; and the node monitoring a target wake-up signal, the target wake-up signal being used for determining whether to monitor first signaling, and the first information block being used for determining time-frequency resources occupied by means of the target wake-up signal, wherein the target wake-up signal carries a first bit block, which is used for generating a first bit sequence; a first feature sequence is a sequence comprising a plurality of sequentially indexed numerical values, and the products of a plurality of bits comprised in the first bit sequence and corresponding numerical values in the first feature sequence are used for generating a first symbol sequence; the number of symbols comprised in the first symbol sequence is related to the number of time-frequency resources occupied by the target wake-up signal, and the first symbol sequence is subjected to at least transform precoding so as to be used for generating the target wake-up signal. The present application reduces the rate of false detection.