Bluetooth Signal Detection Using Preamble Quality Screening

Solution Overview

Problem

Bluetooth receivers waste power by performing signal detection on synchronization or access address portions of Bluetooth signals even when signal quality is poor, leading to unsuccessful synchronization.

Innovation Solution

The method involves receiving a Bluetooth signal, detecting its quality by performing signal detection on the preamble portion, and terminating signal detection on the sync word or access address portions if the signal quality is not greater than a specified threshold.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the receiver performs signal detection on the sync word portion or access address portion within the duration set by the timer, then the receiver attempts to synchronize the Bluetooth signal, but when the signal quality is poor, this leads to waste of power consumption

Engineering Contradiction:

Improvesignal synchronizationVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The receiver performs preliminary signal quality detection on the preamble portion before committing to full signal detection on the sync word or access address portion. This preliminary action allows the system to identify poor quality signals early and avoid wasting power on futile synchronization attempts, while still maintaining the capability to synchronize when signal quality is adequate

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The preamble portion serves as an intermediary element that mediates between the received Bluetooth signal and the full signal detection process. By detecting signal quality on the preamble first, the system uses this intermediate assessment to决定是否 proceed with further detection, thus avoiding direct power-consuming operations on low-quality signals

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the receiver performs signal detection on the sync word portion or access address portion, then signal synchronization may be achieved, but unnecessary detection on low-quality signals reduces detection efficiency

Engineering Contradiction:

Improvesignal synchronizationVSAvoiddetection efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The receiver performs preliminary signal quality detection on the preamble portion before committing to full signal detection on the sync word or access address portion. This preliminary action allows the system to identify poor quality signals early and avoid wasting power on futile synchronization attempts, while still maintaining the capability to synchronize when signal quality is adequate

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system performs only partial signal detection on the preamble portion when signal quality is poor, rather than completing the full detection sequence. This partial action is sufficient to identify unsuccessful synchronization attempts and terminate further processing, thereby improving overall detection efficiency by avoiding excessive operations on low-quality signals

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12328186B2Method for signal detection, electronic device, and storage medium

Publication Date: 2025.06.10 RDA MICROELECTRONICS SHANGHAICO LTD

AI summary

Embodiments of the disclosure disclose a method for signal detection, an electronic device, and a storage medium. The method includes: receiving a Bluetooth signal, obtaining a signal quality by performing signal detection on a preamble portion of the Bluetooth signal, and terminating signal detection on sync word portion or an access address portion of the Bluetooth signal on condition that the signal quality is not greater than a quality threshold.