Interference Searching and Tracking Circuit for 5G Networks
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Solution Overview
Problem
High computational requirements for detecting intercell interference in 5G networks make existing methods impractical, especially in densely deployed fifth-generation communication systems.
Innovation Solution
The introduction of an interference searching and tracking circuit (ISTC) that utilizes millimeter wave technology to reduce complexity by generating beam sub-spaces, determining Eigenvectors of interference energy, and tracking these over time, providing real-time location information for scheduler use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional intercell interference detection methods are used, then interference detection capability is maintained, but computational complexity becomes prohibitively high
Solution Approach 1:
The patent segments the full angular space into discrete beam directions and further divides the interference detection process into subspace identification and eigenspace tracking stages. This segmentation transforms the computationally intensive full-matrix analysis into manageable incremental updates, reducing complexity while preserving detection accuracy.
Solution Approach 2:
The patent performs preliminary identification of interference subspaces by analyzing beam energy levels and selecting dominant subspaces before conducting full eigenspace decomposition. This preliminary action filters out negligible interference components, reducing the computational burden of subsequent tracking operations while maintaining detection precision for significant interferers.
2Loss of information
If full interference measurement is performed, then complete interference information is obtained, but real-time processing becomes impractical
Solution Approach 1:
The patent implements continuous interference tracking by updating eigenspaces incrementally as new covariance matrices arrive, rather than performing complete re-analysis. This continuous action maintains up-to-date interference information for real-time scheduling decisions without repeated full measurements, balancing information completeness with processing efficiency.
Solution Approach 2:
The patent performs partial interference measurement by focusing computational resources on identifying and tracking only the dominant interference subspaces that exceed energy thresholds, rather than analyzing all possible interference components. This partial action captures the most critical interference information needed for scheduling while avoiding unnecessary computation on negligible components.
Data Source
AI summary
Methods and apparatus are disclosed for searching and tracking intercell interference in communication networks. In an exemplary embodiment, a method is provided that includes operations of receiving a noise covariance matrix and generating a beam sub-space from the noise covariance matrix. The beam sub-space includes one or more sub-space beams. The method also includes determining a set of selected sub-space beams having energy levels that exceed a threshold, calculating an Eigenvector decomposition for the set of selected sub-space beams to identify an Eigenspace of interference energy, and tracking the Eigenspace over time.