Communication Control Device Grid-Based Interference Calculation
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Solution Overview
Problem
In frequency sharing systems, calculating interference power for multiple communication devices across all protection areas results in a significant calculation load for the frequency management database, making it inefficient and resource-intensive.
Innovation Solution
A communication control device and method that reduces the calculation load by using a bitmap to identify overlapping radio wave reachable ranges and performing logical operations to determine cumulative interference power only in relevant grids, thereby efficiently allocating interference margins and transmission powers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference calculations are performed for all protection areas, then interference protection reliability is improved, but calculation load increases
Solution Approach 1:
The protection area is divided into multiple grids, and the interference calculation is performed only for grids that overlap with the radio wave reachable range of secondary systems. This segmentation approach divides the large calculation domain into smaller, manageable units, allowing the system to focus computational resources only on relevant areas rather than calculating interference for all protection areas.
Solution Approach 2:
The patent applies different calculation approaches to different regions: grids that overlap with radio wave reachable ranges undergo interference calculation, while grids that do not overlap are excluded from calculation. This local quality principle ensures that computational resources are allocated based on the actual need for interference assessment in each specific region.
2Measurement precision
If interference calculations are performed for all protection areas, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary identification of grids that overlap with radio wave reachable ranges before performing interference calculations. By pre-determining which grids require calculation based on spatial overlap analysis, the system avoids unnecessary computations in areas where no secondary systems operate, thus reducing calculation time while maintaining measurement precision for relevant areas.
Solution Approach 2:
Instead of performing interference calculations for all protection areas (excessive action), the patent performs calculations only for the subset of grids that actually overlap with radio wave reachable ranges (partial action). This partial action approach maintains sufficient measurement precision for areas where interference is possible while significantly reducing the total calculation time by excluding irrelevant areas.
Data Source
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AI summary
To provide a communication control device capable of appropriately accommodating a surplus interference margin that is not distributed to a communication device depending on a situation. There is provided a communication control device including an acquisition unit that acquires a parameter for calculating a coverage of one or more second wireless systems that share a part or a whole of a frequency allocated to a first wireless system, and a control unit that calculates the coverage of the second wireless system on the basis of the parameter acquired by the acquisition unit and a predetermined reception power reference value, generates information indicating whether or not a partitioned geographical range is included in the coverage, and records a reception power level from the second wireless system in the geographical range in which the information satisfies a predetermined condition.