| Project/Area Number |
17K06428
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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| Keywords | 電波伝搬 / 移動伝搬 / 移動通信 / 携帯電話 / セル設計 / 建物侵入損失 / 伝搬損失 / 周波数特性 / セル構成 |
|---|
| Outline of Final Research Achievements |
A prediction method of the propagation loss from the base station in the building to the mobile station in other buildings was established. The applicable frequency band of this method is from 150MHz to 5.8 GHz, and the applicable height of a transmitting station or a receiving station is from 1.5 m to 30 m. The characteristics and the mechanisms of building penetration loss were clarified based on the measurement of real environment and a scale mode. In addition, the frequency characteristics of the propagation loss from outside a window to outside a window of another building were clarified based on the measurement of real environment. Furthermore, the physical model representing the mechanism of the propagation loss in urban was proposed.
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| Academic Significance and Societal Importance of the Research Achievements |
携帯電話システムのために屋内から屋内の伝搬損失を推定する方法を確立した。これにより異なるビル内にある基地局間の電波の干渉量を把握できるので、オフィスビル内での３次元的なサービスエリアを構成するための無線回線設計が行える。３次元的なエリア構成によって近年の急激な通信トラフィックの増加に対応できるようになる。伝搬推定の方法を公開することによって全ての携帯電話事業者が平等にシステム設計に活用できる。また、無線を用いたIoTなどの設計にも活用できる
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