Multi-Antenna Interference Mitigation via Scanning Signal Detection
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Solution Overview
Problem
Radio communication systems are vulnerable to interfering signals from unauthorized entities, which can disrupt full duplex connections and impact data rates, especially in MIMO and MISO transmission schemes.
Innovation Solution
The system employs scanning and communication antennas configured in different configurations to receive aggregate signal streams, identify interfering signals, determine their direction, and take responsive actions to mitigate these interferences, using signal processing circuits and predictive models for efficient interference detection and characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna sets are used for MIMO transmission to increase data rates, then productivity is improved, but susceptibility to interfering signals increases
Solution Approach 1:
The antenna system is divided into multiple independent sets (first through Nth sets), each capable of separate configuration and operation. This segmentation allows the system to isolate interfering signals to specific antenna sets while maintaining communication functionality through other sets, thereby resolving the contradiction between utilizing multiple antennas for high data rates and vulnerability to interference.
Solution Approach 2:
The patent dynamically changes configuration parameters of antenna sets (such as beamforming weights, polarization, or frequency) to mitigate interference. By adjusting these parameters, the system can maintain high data rates through MIMO while adapting to interference conditions, thus resolving the contradiction between productivity and interference susceptibility.
2Measurement precision
If scanning antennas are used to detect interfering signals, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The scanning antennas are designed to perform multiple functions: both detecting interfering signals and participating in communication transmissions. This multi-functionality reduces the need for separate dedicated scanning antennas, thereby improving interference detection precision without proportionally increasing device complexity.
Solution Approach 2:
The antenna configuration dynamically switches between scanning mode (for interference detection) and communication mode (for data transmission). This dynamic reconfiguration allows the system to achieve high measurement precision when needed while maintaining operational simplicity during normal communication, resolving the contradiction between detection accuracy and system complexity.
3Reliability
If interfering signals are removed to maintain communication integrity, then reliability is improved, but signal processing load increases
Solution Approach 1:
The system performs preliminary detection and identification of interfering signals before they significantly degrade communication. By detecting and characterizing interferers in advance using scanning antennas, the system can prepare mitigation strategies (such as nulling or avoidance) that maintain communication integrity without requiring intensive real-time processing during active interference, thus improving reliability while managing processing load.
Data Source
AI summary
There is set forth herein, in one embodiment, receiving an aggregate scanning signal stream from a set of scanning antennas configured in a scanning configuration; receiving aggregate communication signal streams from first to Nth sets of communication antennas configured in respective communication configurations; identifying an interfering signal stream within the aggregate scanning signal stream and determining a direction associated to such interfering signal stream, wherein the identifying and determining are performed with use of processing of the aggregate scanning signal streams received from the scanning antennas configured in a scanning configuration; and returning an action decision responsively to the identifying and the determining.