Wireless Base Station Placement Using Propagation-Attenuation Clustering
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Solution Overview
Problem
Existing methods for calculating wireless base station installation locations do not consider actual radio wave propagation conditions such as shielding and reflection, leading to suboptimal installation decisions.
Innovation Solution
A base station allocation support apparatus that calculates radio wave propagation attenuation values between wireless terminals, clusters them based on these values, and determines base station positions to optimize installation considering the radio wave propagation environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If clustering is performed based on physical distance between wireless base station and terminal, then installation locations can be calculated, but actual radio wave propagation environment (shielding, reflection) cannot be considered
Solution Approach 1:
The patent transforms the clustering parameter from physical distance to radio wave propagation attenuation value. By using attenuation values that reflect actual radio wave propagation conditions (including shielding and reflection effects), the system achieves both accurate installation location calculation and adaptation to the radio wave environment. This parameter transformation resolves the contradiction by making the clustering process sensitive to both spatial and propagation characteristics.
2Reliability
If more wireless base stations are installed to improve coverage, then network quality improves, but costs and radio wave interference increase
Solution Approach 1:
The patent performs preliminary clustering based on radio wave propagation attenuation values before determining base station installation locations. This preliminary action identifies optimal locations where base stations can serve the maximum number of terminals with good signal quality, thereby improving network reliability while minimizing the total number of base stations needed and reducing radio wave interference between them.
Solution Approach 2:
The patent determines installation locations specifically for clusters with large radio wave propagation attenuation values, which represent areas with poor signal coverage. By targeting these specific locations, the system improves network quality in areas that need it most while avoiding unnecessary base station deployments in areas with already good coverage, thus reducing overall interference and costs.
3Ease of manufacture
If wireless base stations are installed based on physical distance only, then installation is simple, but radio wave propagation conditions (shielding, reflection) are not considered
Solution Approach 1:
The patent introduces radio wave propagation attenuation values as an intermediary parameter between physical distance and base station installation decisions. Instead of directly using physical distance, the system calculates attenuation values that incorporate shielding and reflection effects, then uses these attenuation values for clustering and location determination. This intermediary approach maintains computational feasibility while accurately reflecting radio wave propagation conditions.
Data Source
AI summary
A base station allocation support apparatus includes a first calculation unit that calculates radio wave propagation attenuation values between a plurality of wireless terminals in a certain area based on position information of each of the plurality of wireless terminals and information indicating a layout of the area, a clustering unit that performs clustering on the plurality of wireless terminals based on the radio wave propagation attenuation values; and a determination unit that determines an arrangement position of a wireless base station with respect to the wireless terminals based on a result of the clustering.