Base Station Testing via Virtual Interference Modeling
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Solution Overview
Problem
In LTE mobile telecommunications networks, interference between adjacent cells is particularly problematic due to their monofrequency and heterogeneous nature, which existing technologies struggle to accurately model and mitigate, affecting network performance.
Innovation Solution
A method and system for testing base stations that acquire and calculate interference models between adjacent cells, considering load, mobile terminal locations, and resource scheduling, and provide these patterns to each cell, incorporating ICIC algorithms and emulating adjacent cells to adjust interference levels in both uplink and downlink paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If interference between adjacent cells is not accurately modeled, then network performance testing is simplified, but the accuracy of network performance evaluation deteriorates
Solution Approach 1:
The patent uses virtual interference signals that copy the statistical characteristics of real interference from adjacent cells. By generating synthetic interference patterns based on measured or estimated parameters (such as interference power spectral density, correlation properties, and spatial distribution), the system replicates real-world interference conditions without requiring physical adjacent cells, thus improving measurement precision while controlling system complexity
Solution Approach 2:
The patent dynamically adjusts interference parameters such as power levels, frequency offsets, and temporal correlations to match different network scenarios. By changing these parameters based on network configuration and traffic conditions, the system accurately models varying interference conditions without requiring a complete redesign of the testing system
2Reliability
If real-time interference measurement is performed, then interference mitigation is improved, but the processing time and computational load increase
Solution Approach 1:
The patent performs preliminary measurements of interference characteristics during idle periods or uses pre-configured interference models based on network topology and historical data. By preparing interference profiles in advance, the system can quickly apply appropriate mitigation strategies when interference is detected, reducing real-time processing requirements while maintaining effective interference mitigation
Solution Approach 2:
The patent implements feedback mechanisms where interference measurements are continuously monitored and used to adjust resource allocation and transmission parameters. The system uses measured interference levels to dynamically modify scheduling decisions, power control, and resource block assignment, creating a closed-loop system that improves mitigation effectiveness without requiring excessive processing time
Data Source
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AI summary
The present invention relates to a method for alpha-testing base stations (10, 11, 12) of a mobile telecommunications network (20) comprising at least one cell (40, 41, 42), characterised in that said method comprises the steps of: acquiring data relate to interference between the adjacent cells (40, 41, 42) of said mobile telecommunications network (20), calculating an interference model (Mi) between two adjacent cells for the entire network (20), and providing said interference model (Mi) to each cell of said network (20). The present invention also relates to a system (100) for alpha-testing base stations (10, 11, 12) of a mobile telecommunications network (20) comprising a plurality of cells (40, 41, 42).