Dynamic ABS Ratio Adjustment for Throughput Fairness in Macro-Pico Networks
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Solution Overview
Problem
The application of eICIC in wireless communication systems leads to a deterioration in throughput fairness between macro and pico base stations, resulting in imbalanced throughput distribution among terminals, especially when traffic loads are unevenly distributed.
Innovation Solution
A radio resource setting method that calculates determination conditions and ratios for limiting radio resource usage in neighboring communication areas, allowing base stations to dynamically adjust and request priority resources to maintain throughput fairness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If eICIC is applied to suppress interference between macro and pico base stations, then interference is reduced, but throughput fairness deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of ABS ratio based on traffic load conditions. The macro base station monitors the traffic load of the pico base station and dynamically changes the ABS ratio to maintain throughput fairness. When pico load is high, ABS ratio increases to protect pico terminals; when pico load is low, ABS ratio decreases to improve macro throughput, making the interference coordination adaptive rather than static.
Solution Approach 2:
The patent changes the parameter of ABS ratio based on traffic load conditions. By adjusting this key parameter dynamically, the system can optimize the balance between interference suppression and throughput fairness. The ABS ratio serves as a controllable parameter that directly influences the degree of interference coordination applied.
2Reliability
If ABS ratio is increased to improve throughput fairness, then macro base station throughput decreases
Solution Approach 1:
The patent dynamically adjusts the ABS ratio parameter based on real-time traffic load monitoring. Instead of using a fixed high ABS ratio that would always reduce macro throughput, the system increases ABS ratio only when necessary (when pico traffic load is high), and decreases it when pico traffic load is low, thus minimizing the impact on macro throughput while maintaining throughput fairness when needed.
Solution Approach 2:
The system transitions from static ABS configuration to dynamic ABS ratio adjustment. The macro base station continuously monitors pico traffic load and adapts the ABS ratio accordingly, allowing the system to optimize macro throughput in normal conditions while providing protection to pico terminals when their traffic demand increases.
Data Source
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AI summary
A radio resource setting method according to the present invention is a method for, when there are a first communication area managed by a pico base station (100) and a second communication area including at least part of the first communication area and managed by a macro base station (200), setting radio resources that the pico base station (100) and macro base station (200) can use for wireless communication with a terminal (300), the radio resource setting method comprising: calculating determination conditions for determining whether or not to set radio resources whose use is limited in the second communication area; calculating a ratio of the radio resources whose use is limited in the second communication area; and setting the radio resources whose use is limited in the second communication area using the determination conditions and the ratio of the radio resources whose use is limited.