Communication Controller Interference Source Counting
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Solution Overview
Problem
Current interference margin setting methods for secondary systems in frequency sharing, as regulated by ECC Report 186, may not accurately count the number of devices operating as secondary systems with different operation frequency bands or bandwidths, leading to inappropriate interference margin settings and potential interference with primary systems like fixed satellite services.
Innovation Solution
A communication control device and method that calculates the actual number of interference sources for secondary systems, using parameters like adjacent channel interference power ratio and adjacent channel selectivity, to determine the maximum allowable transmission power, ensuring appropriate interference margin settings regardless of frequency band differences between primary and secondary systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the same interference margin setting methods as ECC Report 186 are applied to CBSDs with different operation frequency bands or bandwidths, then the method is simple to apply, but the number of devices operating as secondary systems cannot be appropriately counted and the interference margin cannot be appropriately set
Solution Approach 1:
The patent changes the parameter for counting interference sources from a simple device count to a weighted count that incorporates adjacent channel interference power ratio and adjacent channel selectivity. This allows accurate interference margin setting for CBSDs with different operation frequency bands or bandwidths while maintaining the framework of existing regulations.
2Productivity
If frequency sharing is implemented to alleviate depletion of frequency resources, then frequency utilization efficiency is improved, but interference between primary and secondary systems increases
Solution Approach 1:
The patent implements a feedback mechanism where the communication control device calculates the actual number of interference sources based on adjacent channel interference power ratio and adjacent channel selectivity, then uses this information to set the maximum allowable transmission power for secondary systems. This feedback loop ensures that frequency sharing can proceed efficiently while maintaining appropriate interference protection levels.
Data Source
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AI summary
[Object] To provide a communication control device capable of appropriately counting the number of secondary systems even in a case in which operation frequency bands of primary and secondary system are different. [Solution] Provided is a communication control device including an interference source calculation unit configured to calculate an actual number of interference sources for a first wireless system, using information regarding interference imposed on the first wireless system from a second wireless system using a second frequency band at least partially overlapping a first frequency band used by the first wireless system.