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Environment monitoring in urban areas is becoming important to provide information for safety and relief for daily lives. Wireless sensor devices are regarded as means of such monitoring. However, it is not efficient to deploy the sensors more than the necessity in the city. It is efficient to deploy the sensors on the place where many people move around. Therefore, we install sensors to walking people...
Flooding protocols are efficient for communications on instable network such as inter-vehicle communications because there is no necessity of complex procedures to build routes for data forwarding. In this paper, we propose a multi-channel flooding protocol using multi-interface WLAN terminals for improving robustness of communications. In simulation test, we show that packet loss rate can be reduced...
We propose and demonstrate a method for improving capacity for real-time interactive communications over multi-hop wireless networks using WiFi wireless devices. The proposed method uses aggregation of packets at access points designed to avoid bottlenecks in relay traffic and maintain low end-to-end latency. We present experimental results which demonstrate that a relay node can support seven concurrent...
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