Radio Station Controller for Interference Mitigation
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Solution Overview
Problem
Current radio communication systems face challenges in efficiently sharing a common frequency band, leading to interference issues due to inadequate information exchange between radio stations, particularly in centralized control schemes, and inefficient frequency utilization in distributed control schemes.
Innovation Solution
A controller that acquires radio communication state information from neighboring stations via a backbone network, uses signal demodulation and reliability determination units to assess transmission availability, and adjusts radio resource parameters based on frequency and waveform features to minimize interference and optimize resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If centralized control scheme is used to manage frequency usage states, then interference avoidance between radio stations is improved, but device complexity and information exchange requirements increase
Solution Approach 1:
The patent introduces a control station as an intermediary that collects frequency usage state information from multiple radio stations and determines transmission availability. This mediator consolidates the control function, allowing individual radio stations to avoid the complexity of autonomous decision-making while still achieving interference avoidance through centralized coordination.
Solution Approach 2:
The patent merges the control functions of multiple radio stations into a single control station. By combining frequency usage state information from multiple sources and centralizing the transmission availability determination, the system achieves interference avoidance without requiring each station to maintain complex control logic independently.
2Device complexity
If distributed control scheme is used for transmission management, then device complexity is reduced, but frequency utilization efficiency deteriorates due to inadequate information exchange
Solution Approach 1:
The patent implements a feedback mechanism where radio stations report their frequency usage state information to the control station, which then determines transmission availability and provides decisions back to the stations. This feedback loop enables efficient frequency utilization by ensuring that transmission decisions are based on up-to-date information from all stations, while keeping individual station complexity low.
Solution Approach 2:
The control station acts as an intermediary that collects information from multiple radio stations, processes it centrally, and provides coordinated transmission decisions. This mediator approach allows distributed radio stations to achieve efficient frequency utilization without requiring complex information exchange protocols between themselves.
3Device complexity
If radio stations autonomously determine transmission availability without information sharing, then device complexity is reduced, but interference avoidance capability deteriorates
Solution Approach 1:
The patent introduces a control station as an intermediary that collects frequency usage state information from radio stations and determines transmission availability. This mediator enables interference avoidance by consolidating information from multiple stations and providing coordinated decisions, while individual stations maintain simple autonomous operation without requiring direct information exchange with each other.
4Object-affected harmful factors
If frequency bands are predetermined for cell boundaries to avoid inter-cell interference, then interference avoidance is improved, but frequency utilization efficiency deteriorates due to rigid allocation
Solution Approach 1:
The patent implements dynamic transmission availability determination based on real-time frequency usage state information collected from multiple radio stations. Instead of rigid predetermined frequency allocations, the system dynamically adjusts transmission decisions according to current conditions, allowing frequency bands to be reused more efficiently while still avoiding interference through coordinated control.
Data Source
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AI summary
One aspect of the present invention relates to a controller for a radio station. The controller includes an information acquisition unit acquiring radio communication state information on another radio station different from the radio station via a connected backbone network, the radio communication state information including frequency information and waveform feature information, a waveform information extraction unit calculating a waveform feature based on the waveform feature information, the waveform feature indicating whether a received radio signal includes the radio signal transmitted from the other radio station, and a radio resource parameter determination unit determining whether signal transmission from the radio station is available and specify a radio resource to be used for the signal transmission based on the frequency information, the waveform feature information and/or the calculated waveform feature.