Ambient Backscattering Zone Generation for Signal Decoding
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Solution Overview
Problem
In ambient backscattering communication, the distribution of electromagnetic power is not uniformly controlled, leading to zones with maximal or minimal interference, which can hinder effective communication between transmitter and receiver devices due to decoding errors or insufficient power thresholds.
Innovation Solution
A process is developed to generate backscattering and reception zones by determining emission constraints that ensure the received electromagnetic power exceeds or falls below specific thresholds, allowing for optimal positioning of transmitter and receiver devices to improve communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If transmitter and receiver devices are positioned in a complex propagation environment, then communication coverage is extended, but interference zones with maximal power distribution occur causing decoding errors
Solution Approach 1:
The patent applies local quality by creating spatially differentiated zones with distinct electromagnetic power characteristics. The source device generates a backscattering zone with high power for transmitter devices and a reception zone with low power for receiver devices, making different parts of the communication environment serve different functions to simultaneously extend coverage and ensure reliable decoding.
Solution Approach 2:
The patent introduces an intermediary mechanism (the controlled electromagnetic field zones generated by the source device) that mediates between the transmitter and receiver. This intermediary structure organizes the propagation environment to prevent direct interference while maintaining communication functionality across extended areas.
2Power
If devices are positioned in zones with maximal interference power, then signal strength is increased, but decoding accuracy deteriorates due to interference
Solution Approach 1:
The patent creates locally optimized zones where power distribution is tailored to specific functional requirements. The backscattering zone provides high power for effective signal reflection, while the reception zone maintains low power to ensure accurate decoding, resolving the contradiction between power strength and decoding accuracy through spatial differentiation.
3Object-affected harmful factors
If devices are positioned in zones with minimal power, then interference is reduced, but the power threshold for effective decoding is not met
Solution Approach 1:
The patent implements local quality by creating a reception zone with controlled low power characteristics. This zone is specifically designed to minimize interference while maintaining sufficient power levels for decoding by leveraging the focused energy distribution from the backscattering zone, thus reducing harmful factors without sacrificing necessary power.
4Ease of operation
If arbitrary positioning of devices is allowed, then ease of deployment is improved, but communication effectiveness decreases due to uncontrolled interference zones
Solution Approach 1:
The patent applies preliminary action by pre-establishing controlled electromagnetic field zones (backscattering and reception zones) before device operation. This preliminary structuring of the propagation environment ensures that devices can be deployed easily within these predefined zones while automatically benefiting from optimized interference management and communication effectiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the probability of successful signal decoding by adjusting the electromagnetic power within these zones, reducing interference and ensuring communication quality between devices.
Implementation Method 1
The transmitter device reflects the ambient signal to the receiver device, optionally by modulating it. The signal reflected in this way is called 'backscattered signal'
Implementation Method 2
the transmitter and receiver devices are generally positioned in a complex propagation environment comprising elements (walls, trees, ground, etc.) likely to generate reflections and diffractions of waves emitted by the source
Implementation Method 3
the transmitter and receiver devices are generally positioned in a complex propagation environment comprising elements (walls, trees, ground, etc.) likely to generate reflections and diffractions of waves emitted by the source
Implementation Method 4
a signal coming directly from the source called 'interference signal' and resulting from multiple reflections/diffractions of waves... the distribution of power generated by this interference signal is not uniform and exhibits zones where the power is locally maximal or else locally minimal
Data Source
AI summary
A process for generating at least one backscattering zone, by at least one transmitter device and to at least one receiver device, of an ambient radio signal emitted by at least one source; and a process for generating at least one reception zone, by the receiver device, of the backscattered ambient signal. The process for includes: determining an emission constraint, when it is respected by the source, for generating at least one backscattering zone in which the received electromagnetic power is greater than a determined threshold, called “backscattering threshold”, and/or generating at least one reception zone in which the received electromagnetic power is less than a determined threshold, called “reception threshold”; and transmitting, by the source, with respect to the emission constraint.