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IEEE/ICACT20210234 Slide.14        [Big Slide]	Oral Presentation
	When collecting data from an underwater BLE sensor, the user first accesses the water-surface part and specifies the MAC address of the target BLE sensor, the UUID corresponding to the sensor data to be acquired, and the data collection interval. The water-surface part then transmits a control message to the mounting device using acoustic communication. Upon receiving the control message, the mounting device sends a request message to the sensor corresponding to the specified MAC address and UUID at a predetermined frequency. After the mounting device receives the response message from the BLE sensor, it transfers the information about the UUID and sensor data included in the message to the water-surface part using acoustic communication. As a result, the user can acquire the desired data from the underwater BLE sensor.

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