Communication Control Device Power Distribution for Secondary Systems
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Solution Overview
Problem
In scenarios with multiple secondary systems, frequent updates to transmission power values are necessary to manage accumulative interference within acceptable ranges for primary systems, leading to increased signaling and potential decreases in system throughput.
Innovation Solution
A communication control device and method that dynamically adjusts transmission power for secondary systems using a secondary system manager, which calculates and distributes power based on interference control models to ensure accumulative interference remains within acceptable limits without excessive signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission power is frequently updated for each secondary system to manage accumulative interference, then interference control accuracy is improved, but signaling overhead increases and system throughput decreases
Solution Approach 1:
The patent combines multiple secondary systems into a single group managed by one transmission power value. Instead of independently controlling power for each secondary system, the invention manages accumulative interference from multiple secondary systems using a unified power control mechanism, thereby reducing signaling overhead while maintaining interference control accuracy.
Solution Approach 2:
The invention creates a universal transmission power control mechanism that serves multiple secondary systems simultaneously. A single transmission power value is applied to multiple secondary systems, making the power control function universal and eliminating the need for individual power updates for each system.
2Ease of manufacture
If transmission power is simply distributed based on path loss of each secondary system, then power allocation simplicity is improved, but interference control accuracy deteriorates due to accumulative interference not being considered
Solution Approach 1:
The patent merges the interference control of multiple secondary systems into a single management framework. By calculating and updating one transmission power value that represents the accumulative interference from multiple secondary systems, the invention maintains simplicity while improving accuracy compared to individual path loss-based allocation.
Data Source
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AI summary
There is provided a communication control device including a power distribution unit configured to distribute, to one or more secondary systems, a transmission power accepted for a secondary usage of a frequency channel which is protected for a primary system, and a notification unit configured to notify each secondary system of a value of a second transmission power which is decided depending on a value of a first transmission power distributed by the power distribution unit. Upon updating the transmission power, only in a case where a value of the second transmission power which is previously notified and a value of the first transmission power which is newly distributed by the power distribution unit satisfy a predetermined condition with respect to a certain secondary system, the notification unit notifies the secondary system of a new value of the second transmission power.