Bluetooth Interference Detection via Signal Power Ratio
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Solution Overview
Problem
Existing Bluetooth (BT) systems operating in the 2.4G frequency band face significant interference due to the large number of devices using the same band, leading to increased complexity, power consumption, and cost in detecting interference frequency channels.
Innovation Solution
A method for detecting interference in BT systems by receiving a signal, obtaining its power value, filtering the signal, obtaining the filtered signal's power value, and determining whether the frequency channel is an interference channel based on the ratio of the two power values and a preset threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing interference detection methods are used in Bluetooth 2.4G systems, then interference detection capability is achieved, but device complexity increases
Solution Approach 1:
The patent applies self-service by using the Bluetooth device's existing receiver and signal processing capabilities to perform interference detection without requiring external specialized equipment. The device detects interference by measuring signal power at different frequencies using its built-in receiver, thereby eliminating the need for additional measurement modules and reducing overall system complexity while maintaining reliable interference detection.
2Reliability
If existing interference detection methods are used in Bluetooth 2.4G systems, then interference detection capability is achieved, but power consumption increases
Solution Approach 1:
The patent implements periodic action by performing interference detection at specific intervals rather than continuously. The device measures signal power at different frequency channels periodically during the connection establishment process, which reduces power consumption compared to continuous monitoring while still providing reliable interference detection capability when needed.
3Reliability
If existing interference detection methods are used in Bluetooth 2.4G systems, then interference detection capability is achieved, but cost increases
Solution Approach 1:
The patent applies universality by making the Bluetooth device's receiver serve multiple functions: both communication and interference detection. Instead of requiring a dedicated measurement module for interference detection, the existing receiver is used to measure signal power at different frequencies, thereby reducing component count, simplifying manufacturing, and lowering cost while maintaining reliable interference detection capability.
Data Source
AI summary
An interference detection method and apparatus, a storage medium, and a terminal are provided. The method includes: receiving a signal; obtaining a power value of the signal as a first power; filtering the signal to obtain a filtered signal; obtaining a power value of the filtered signal as a second power; and determining whether a frequency channel where the signal is located is an interference frequency channel or a non-interference frequency channel based on a comparison result of a ratio of the first power to the second power and a preset threshold.