| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Aiming at quick construction of a wireless network surrounding a multi-level building in a disaster area, an efficient method to determine the network nodes' locations in the air is proposed. The nodes are attached to balloons outside of a building and deployed in the air so that the network can be accessed from the entire building. We introduce an original radio propagation model for predicting path loss from an outdoor position to a position inside of a building. In order to address the three-dimensional deployment problem, the proposed method optimizes an objective function for minimizing the number of network nodes on guarantee the coverage (the target space need to be covered over a certain percentage by wireless network nodes). We propose an algorithm for solving this problem based on genetic algorithm. To evaluate the proposed method, we compared our method with three benchmark methods, and the results show that the proposed method requires fewer nodes than other methods.
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