Wireless Interference Control via Timing Synchronization
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Solution Overview
Problem
Existing wireless communication systems lack the ability to selectively control interference signals, preventing authorized devices from conducting wireless communications within areas where interference is desired, such as hospitals or theaters, while allowing others to continue operating.
Innovation Solution
A system of interference devices that receive a control signal indicating desired transmission timing, allowing authorized devices to decipher and cancel out interference signals by scheduling their transmissions to avoid code overlap, ensuring authorized communication devices can operate without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If interference signals are transmitted to prevent wireless communications in certain areas, then unauthorized communications are blocked, but authorized communications are also interfered with
Solution Approach 1:
The system applies different interference characteristics to different spatial locations by using directional antennas or beamforming techniques. Authorized users in specific locations experience minimal interference while unauthorized users in other locations experience strong interference signals. This resolves the contradiction by making the interference effect location-dependent rather than uniform across the entire coverage area.
Solution Approach 2:
The system dynamically changes parameters of interference signals such as frequency, power level, and modulation characteristics based on detected communication patterns. When authorized communications are detected, the system adjusts interference parameters to avoid conflicting with those communications, while maintaining interference effectiveness against unauthorized devices. This resolves the contradiction through adaptive parameter modification.
2Object-affected harmful factors
If known interference techniques are used, then wireless communications are blocked in the area, but the technique cannot selectively allow authorized devices to communicate
Solution Approach 1:
The system continuously monitors wireless communications in the coverage area and uses this feedback information to identify authorized versus unauthorized devices. Based on the feedback, the system dynamically adjusts interference signal characteristics to block unauthorized communications while permitting authorized communications. This feedback mechanism provides the selective control capability that resolves the contradiction.
Solution Approach 2:
The interference system transitions from a static, uniform interference approach to a dynamic, adaptive system that continuously adjusts its behavior based on real-time conditions. The system can change interference patterns, power levels, and target directions dynamically to achieve selective blocking of unauthorized communications while maintaining authorized communications. This dynamic adaptability resolves the contradiction.
Data Source
AI summary
An exemplary method of controlling wireless communications includes generating a control signal that indicates a desired transmission timing of a plurality of interference signals from a respective plurality of interference devices. The control signal is transmitted to the plurality of interference devices.