Self-Optimized Inter-Cell Interference Coordination Controller
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Solution Overview
Problem
Existing communication systems face challenges in managing inter-cell interference (ICI) due to changing operating conditions, such as cell loading and UE distribution, which can lead to suboptimal performance across different geographical areas, necessitating a self-optimization mechanism for inter-cell interference coordination (ICIC).
Innovation Solution
A system and method for self-optimized ICIC, where a controller determines ICIC information and automatically adjusts parameters without end-user input, enabling fast adaptation and transmission of ICIC operation parameters to network entities, allowing for ICIC self-optimization at various levels and granularities to meet changing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual ICIC parameter adjustment is used, then operator control over interference coordination is maintained, but system performance degrades under changing operating conditions due to lack of real-time adaptation
Solution Approach 1:
The system enables self-service by allowing the ICIC controller to automatically monitor operating conditions, evaluate performance metrics, and adjust ICIC parameters without operator intervention. The controller autonomously adapts frequency reuse patterns, power levels, and resource allocation based on real-time network state, eliminating the need for manual reconfiguration while maintaining optimal interference coordination.
Solution Approach 2:
The system implements dynamics by transitioning from static, manually-configured ICIC parameters to dynamic, automatically-adjusted parameters that adapt in real-time to changing operating conditions. The controller continuously monitors cell loading, UE distribution, and interference levels, then dynamically modifies frequency reuse patterns and power allocation to optimize performance as network conditions evolve.
2Reliability
If frequent ICIC parameter changes are implemented to meet changing conditions, then system performance is maintained, but operator intervention and configuration complexity increase
Solution Approach 1:
The system implements feedback by establishing a closed-loop control mechanism where the ICIC controller continuously monitors performance metrics (throughput, interference levels, cell loading) and operating conditions (UE distribution, traffic patterns). Based on this feedback, the controller automatically adjusts ICIC parameters to maintain optimal performance, eliminating the need for operators to manually respond to performance degradation.
Solution Approach 2:
The ICIC controller serves as an intermediary between the radio access network and the ICIC parameters. It abstracts the complexity of parameter management by providing a centralized intelligence that automatically translates operating conditions and performance metrics into appropriate parameter adjustments, shielding operators from the complexity of frequent configuration changes while ensuring performance consistency.
3Measurement precision
If ICIC parameters are manually optimized for specific geographical areas, then local performance is improved, but the system cannot adapt to temporal changes in traffic patterns and user distribution
Solution Approach 1:
The system transforms static, geography-specific ICIC configurations into dynamic parameters that adapt to temporal changes in traffic patterns and user distribution. The controller continuously updates frequency reuse patterns and power levels based on real-time monitoring of cell loading and UE distribution, enabling the same geographical area to be optimized for different conditions at different times without manual reconfiguration.
Data Source
AI summary
An embodiment method for operating a controller of a communications system includes determining inter-cell interference coordination (ICIC) information for the communications system, automatically adjusting, by the controller without end-user input, ICIC parameters according to the ICIC information to improve an overall performance level of the communications system, and transmitting the ICIC operation parameters to network entities in the communications system.