Tone Sequence Wake-Up Packet False Detection
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Solution Overview
Problem
Wireless communication systems face inefficiencies due to false detection events where stations mistakenly identify wake-up packets as legacy OFDM packets, leading to power consumption issues and network inefficiencies.
Innovation Solution
The use of a tone sequence for wake-up packets that satisfies a correlation metric threshold, reducing the likelihood of false triggering by having a low correlation metric and peak-to-average-power ratio, thereby distinguishing wake-up packets from OFDM packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wake-up packets use traditional OFDM formats, then compatibility with legacy systems is maintained, but false detection events increase causing power consumption and network inefficiency
Solution Approach 1:
The wake-up packet is segmented into distinct fields including a unique identifier field, tone sequence field, and payload field. This segmentation allows the wake-up packet to have a differentiated structure from legacy OFDM packets while maintaining compatibility through standardized formatting conventions.
Solution Approach 2:
Specific fields within the wake-up packet are assigned specialized properties - the tone sequence field uses a specific pattern with controlled correlation metrics, the unique identifier field uses distinctive values. These local quality distinctions enable reliable differentiation from legacy packets while maintaining overall structural compatibility.
2Use of energy by moving object
If stations remain in low power mode continuously, then battery life is extended, but wake-up responsiveness may be delayed
Solution Approach 1:
The wake-up radio operates in periodic intervals, activating briefly to check for wake-up packets during designated time windows while remaining in low power mode otherwise. This periodic operation enables energy-efficient monitoring while ensuring timely wake-up responsiveness when packets are transmitted during active windows.
3Reliability
If tone sequence correlation threshold is increased to reduce false detection, then reliability improves, but detection sensitivity decreases causing missed wake-up events
Solution Approach 1:
The tone sequence is designed with specific parameter characteristics including controlled correlation metrics, peak-to-average power ratio constraints, and distinctive frequency patterns. These parameter changes enable the detection system to use higher correlation thresholds for false detection reduction while maintaining sensitivity through the optimized tone sequence properties.
Data Source
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AI summary
This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for determining one or more tone sequences (for example, for wake-up procedures). In one aspect, an access point (AP) may wake a mobile station (STA) from a low power mode using a wake-up packet, where an ON symbol of the wake-up packet is modulated using a tone sequence. To reduce the likelihood of a STA falsely identifying the ON symbol as a packet preamble, the AP may implement a tone sequence that satisfies a correlation metric threshold. For example, for a set of candidate tone sequences, each tone sequence may be associated with a correlation metric and peak-to-average-power ratio (PAPR) coordinate pair, and the tone sequence for modulating the ON symbol of the wake-up packet may be selected from a lower convex hull of the coordinate pairs.