Communication Control Device for Secondary Wireless Systems
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Solution Overview
Problem
The scarcity of radio frequency resources for wireless systems poses a challenge, as incumbent systems occupy all available radio bands, making it difficult to allocate new frequencies effectively, and simply utilizing underutilized radio waves through cognitive radio technology does not ensure efficient distribution among multiple wireless systems.
Innovation Solution
A communication control apparatus that acquires information on secondary wireless systems, determines operation parameters to ensure interference protection for primary systems, calculates residual interference quantities, and classifies secondary systems to adjust operation parameters for efficient radio frequency resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cognitive radio technology is used to utilize underutilized radio waves, then radio frequency resources can be managed, but efficient distribution among multiple wireless systems cannot be achieved
Solution Approach 1:
The patent segments the complex resource distribution problem into two stages: first determining operation parameters to satisfy protection standards, then calculating residual interference quantities and classifying systems for adjusted parameter determination. This segmentation enables efficient distribution by breaking down the difficult overall optimization into manageable sequential steps.
Solution Approach 2:
The patent performs preliminary determination of operation parameters that satisfy protection standards before calculating residual interference quantities. This preliminary action establishes a foundation for subsequent classification and adjustment, enabling more efficient resource distribution by pre-establishing acceptable interference boundaries.
2Reliability
If operation parameters are determined to satisfy protection standards, then interference protection is ensured, but residual interference quantity calculation complexity increases
Solution Approach 1:
The patent divides the calculation process into distinct segments: first determining operation parameters for protection standard satisfaction, then calculating residual interference quantities based on those parameters. This segmentation reduces calculation complexity by handling each task separately rather than simultaneously.
Solution Approach 2:
The patent performs preliminary determination of operation parameters that satisfy protection standards before calculating residual interference quantities. This preliminary action simplifies subsequent calculations by establishing known boundary conditions and acceptable interference levels in advance.
3Productivity
If secondary wireless systems are classified into sets, then residual interference quantity distribution is optimized, but system classification complexity increases
Solution Approach 1:
The patent classifies secondary wireless systems into distinct sets based on their characteristics and interference profiles. This segmentation enables targeted allocation of residual interference quantities to appropriate system groups, optimizing resource utilization by matching resources to system needs rather than applying uniform distribution.
4Area of stationary object
If transmission power is increased for secondary systems, then coverage is improved, but interference to primary systems increases
Solution Approach 1:
The patent performs preliminary determination of operation parameters that satisfy protection standards before calculating residual interference quantities. This preliminary action establishes maximum acceptable interference levels, enabling secondary systems to increase transmission power within defined boundaries that protect primary systems while expanding coverage.
Solution Approach 2:
The patent determines adjusted operation parameters for secondary systems based on residual interference quantities, allowing transmission power to be optimized within acceptable interference margins. This parameter adjustment enables coverage expansion while maintaining protection of primary systems through controlled changes in transmission characteristics.
Data Source
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AI summary
A communication control apparatus (40) includes: an acquisition unit (441) that acquires information on a plurality of second wireless systems that perform wireless communication by utilizing a radio wave of a frequency band used by a first wireless system; a first determination unit (442) that determines, based on the information on the second wireless systems, an operation parameter regarding radio transmission of each of the second wireless systems so as to satisfy a protection standard regarding interference of the radio wave of the first wireless system; a calculation unit (443) that calculates a residual interference quantity that is allowed to be additionally allocated to the second wireless systems based on the operation parameter determined by the first determination unit (442) and the protection standard of the first wireless system; a classification unit (444) that classifies the second wireless systems into a single or a plurality of sets; and a second determination unit (445) that determines, based on information on the residual interference quantity, an adjustment quantity of the operation parameter of the second wireless system belonging to a prescribed set out of the single or plurality of sets.