Dynamic Radio Filter Control for Multi-RAT Interference
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Solution Overview
Problem
Existing radio communication technologies face challenges in effectively filtering signals to improve signal-to-noise ratios and mitigate interference between different radio access technologies (RATs).
Innovation Solution
The implementation of circuitry that includes a first radio path with a filter configured for a first RAT system, and means to obtain indicators dependent on the first and second RAT systems. These indicators are used to control the filter's characteristics, thereby adjusting filtration based on the quality of communication and interference levels between the RAT systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter is configured for a specific RAT system, then the signal-to-noise ratio is improved, but the ability to handle interference from other RAT systems deteriorates
Solution Approach 1:
The filter characteristics are made dynamically controllable based on operational conditions. The control circuitry adjusts filter parameters (such as center frequency, bandwidth, or Q-factor) in response to detected interference levels from other RAT systems, allowing the filter to adapt between being highly selective for SNR improvement and being more permissive to allow legitimate signals from other RATs.
Solution Approach 2:
The invention changes the parameters of the filter (frequency response characteristics, bandwidth, attenuation levels) based on the detected RAT operational state. When interference from other RATs is detected, the filter parameters are modified to either attenuate the interfering frequencies or to broaden the passband to accommodate legitimate signals from other RAT systems.
2Stability of the object's composition
If filter characteristics are fixed for a RAT system, then the filtration performance is stable, but the ability to respond to changing communication environments deteriorates
Solution Approach 1:
The system implements feedback control where the operational state of the RAT system and detected interference levels from other RATs are continuously monitored. This feedback information is used by the control circuitry to dynamically adjust filter characteristics, maintaining stable filtration performance for the primary RAT while adapting to changing environmental conditions and interference patterns.
Solution Approach 2:
The filter transitions from a static, fixed-characteristic component to a dynamic component whose parameters can be adjusted in real-time. The control circuitry modifies filter characteristics based on detected conditions, allowing the system to maintain stability for the intended RAT operation while adapting to changing communication environments and interference scenarios.
3Adaptability or versatility
If dynamic control of filter characteristics is implemented, then the adaptability to interference conditions is improved, but the device complexity increases
Solution Approach 1:
The control circuitry is designed to handle multiple RAT systems and various interference scenarios using a unified control mechanism. Rather than implementing separate control circuits for each RAT type or interference condition, the system uses a multi-functional control block that can adjust filter characteristics for different RATs (such as 5G NR and WiFi) based on a common set of detection and control logic, thereby reducing overall device complexity.
Data Source
AI summary
Circuitry comprising: a first radio path comprising a first filter configured for a first radio access technology (RAT) system; a second radio path comprising a second filter configured for a second radio access technology (RAT) system different to the first RAT system; means for obtaining a first indicator, dependent on the first RAT system, wherein the first indicator is one of a predetermined number of states; means for obtaining a second indicator, dependent on the second RAT system wherein the second indicator is one of a predetermined number of states; and means for using a combination of the states of the first indicator and the second indicator to control characteristics of at least the first filter.