Spectrum Management System Interference Coordination
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Solution Overview
Problem
In wireless communication systems, secondary systems may cause interference to primary systems in adjacent regions due to differing spectrum resource calculations across different databases, leading to potential harm to unregistered primary systems.
Innovation Solution
A spectrum management system that transmits and modifies spectrum use information between regions to ensure secondary systems do not interfere with primary systems, using geographical position and service range information to determine allowed transmission power and bandwidth, and employing interference ranges to adjust spectrum use accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If secondary systems use spectrum resources calculated by local databases, then spectrum utilization efficiency is improved, but interference to primary systems in adjacent regions occurs
Solution Approach 1:
The patent merges multiple regional databases into a unified spectrum management system that coordinates spectrum allocation across different regions. The unified system shares spectrum use information between regions and calculates interference ranges collectively, ensuring that secondary systems do not cause harmful interference to primary systems in adjacent regions while maintaining efficient spectrum utilization.
Solution Approach 2:
The patent implements a feedback mechanism where the unified spectrum management system continuously monitors spectrum use information from secondary systems, calculates their interference ranges, and adjusts spectrum allocation decisions based on this feedback. The system uses feedback loops to verify that proposed spectrum usage by secondary systems will not interfere with primary systems before granting access.
2Adaptability or versatility
If different databases calculate spectrum resources independently, then regional autonomy is maintained, but spectrum resource conflicts arise at region boundaries
Solution Approach 1:
The patent segments the unified spectrum management system into regional nodes that maintain local database functions for regional autonomy, while simultaneously connecting these segments through a coordination mechanism. Each regional node can independently calculate interference ranges for secondary systems in its region, but the segmented system exchanges spectrum use information between regions to prevent conflicts at boundaries.
3Reliability
If secondary systems transmit at maximum allowed power, then transmission quality is improved, but interference range expands to affect adjacent regions
Solution Approach 1:
The patent dynamically changes transmission power parameters for secondary systems based on their geographical position and calculated interference ranges. The unified spectrum management system adjusts the maximum allowed transmission power of secondary systems to ensure that their interference ranges do not extend into adjacent regions where primary systems operate, while still maintaining adequate transmission quality for secondary communications.
Data Source
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AI summary
A spectrum management system includes circuitry that obtains interference information from another spectrum management system, where the interference information indicates interference with communication of a communication system managed by the other spectrum management system. The interference is caused by at least one secondary communication system managed by the spectrum management system. The circuitry also modifies a communication characteristic of the at least one secondary communication system based on the interference information.