Bluetooth Paging Signal Detection With Adaptive Gain Thresholds
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Solution Overview
Problem
In wireless communications, false modulated signals are often unintentionally transmitted by paging devices, causing delays and failures in the paging process due to spurious signals being detected by paged devices, especially under strong signal conditions.
Innovation Solution
A method and system that adjusts the gain of paged device amplifiers and matching thresholds to avoid detection of false modulated signals, allowing the paged device to reduce sensitivity and prevent false signal detection while maintaining the ability to receive intended signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the paged device increases sensitivity to detect modulated signals, then the ability to detect intended signals is improved, but false modulated signals are more likely to be detected
Solution Approach 1:
The patent applies local quality by adjusting the gain of specific amplifiers (first amplifier, second amplifier) selectively at different stages of the signal reception process. The first amplifier gain is adjusted based on signal strength detection, and the second amplifier gain is adjusted based on modulated signal detection, creating localized gain control at different points in the signal processing chain rather than uniform gain adjustment throughout.
Solution Approach 2:
The patent implements dynamics by continuously adjusting amplifier gains based on real-time signal conditions. The system dynamically modifies the gain of amplifiers in response to detected signal strength and modulated signal characteristics, allowing the sensitivity to adapt to changing environmental conditions and signal qualities.
2Speed
If the paged device responds to detected modulated signals, then communication responsiveness is improved, but paging process delays increase due to false signals
Solution Approach 1:
The patent applies preliminary action by detecting the strength of received modulated signals before fully processing and responding to them. The system performs preliminary gain adjustment and signal strength evaluation to identify potentially false signals early in the reception process, preventing unnecessary response transmissions and subsequent paging delays.
Solution Approach 2:
The patent implements feedback mechanisms where the detected signal strength and modulated signal characteristics feed back to control the amplifier gains. This feedback loop allows the system to learn from previous detections and adjust its sensitivity accordingly, reducing responses to false signals while maintaining responsiveness to valid communication attempts.
3Reliability
If the paged device transmits response signals to detected modulated signals, then communication establishment is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by selectively transmitting response signals only when the detected modulated signal meets specific strength criteria. Rather than responding to all detected signals, the system performs partial processing and evaluation before committing to a response transmission, thereby conserving power while maintaining reliable communication establishment for valid signals.
Data Source
AI summary
There is provided a method for use in a wireless communication to avoid detection of a false modulated signal in a paged device. In one embodiment, a modulated signal is received by the paged device. Then, the modulated signal is identified by the paged device as a preliminary false modulated signal. Thereafter, the gain of at least one paged device amplifier and/or a matching threshold of the paged device is reduced by the paged device to decrease a sensitivity of the paged device to avoid detection of a future false modulated signal. In one embodiment, the wireless communication is a Bluetooth wireless communication and the paged device is a Bluetooth enabled device. An exemplary system for implementing one embodiment of the disclosed method is described.