2019 Fiscal Year Final Research Report
Channel Allocation based on Beacon-coupled Non-linear Oscillators in Distributed Wireless Networks
| Project/Area Number |
17K14686
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Communication/Network engineering
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| Research Institution | Tokyo Metropolitan College of Industrial Technology |
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Principal Investigator |
Inage Kei 東京都立産業技術高等専門学校, ものづくり工学科, 准教授 (80759506)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 無線通信 / 分散ネットワーク / チャネル割当 / 非線形振動子 / 引き込み減少 |
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| Outline of Final Research Achievements |
For channel selection in distributed wireless networks, we proposed clustering method via pull-in phenomenon in non-linear oscillators coupled by beacon transmission. In the proposed method, beacon transmission timing is decided based on phase of own non-linear oscillator that phase is changed according to phase difference from coupled oscillator. As a result, interfered APs transmit beacon with different timing and non-interfered APs transmit with same timing. Channel clustering can be created based on transmission timing. In addition, we added a processing of moving average on the beacon reception processing, and improved success probability. We also constructed another oscillator network for virtual global synchronization by adding phase information in the beacon frame, and realized autonomous and distributed channel allocation based on the two oscillator phases.
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| Free Research Field |
無線通信
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| Academic Significance and Societal Importance of the Research Achievements |
情報化社会において、すでにインフラになりつつある無線ネットワークでは携帯電話の他に、公衆無線LANが大きな役割を果たしつつある。しかし無線LANは電波強度が強くても通信品質が低い場合が多くある。この原因の一つに、街中に多数設置された無線LAN基地局（アクセスポイント：AP）が使用するチャネルが適切に棲み分けられていないことが挙げられる。本研究の成果では、そのチャネル棲み分けをハードウェアの変更を必要とせずソフトウェアの動作変更のみで、制御するサーバなどを必要とせず、チャネル棲み分けを行うことができる。今後、無線通信量・端末数が増加していく将来においても効率的な通信を実現する一助となる。
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