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Sensors 2012, 12(12), 16194-16210; doi:10.3390/s121216194

TDMA-Based Dual-Mode Communication for Mobile Wireless Sensor Networks

1,* , 2
1 Department of Electrical Engineering and Computer Sciences, UC Berkeley, Berkeley, CA 94720, USA 2 Department of Civil and Environmental Engineering, UC Berkeley, Berkeley, CA 94720, USA
* Author to whom correspondence should be addressed.
Received: 3 September 2012 / Revised: 2 November 2012 / Accepted: 9 November 2012 / Published: 22 November 2012
(This article belongs to the Special Issue Ubiquitous Sensing)
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Small highly mobile robots, and in particular micro air vehicles (MAVs), are well suited to the task of exploring unknown indoor environments such as buildings and caves. Such a task imposes a number of requirements on the underlying communication infrastructure, with differing goals during various stages of the mission. This work addresses those requirements with a hybrid communications infrastructure consisting of a stationary mesh network along with the mobile nodes. The combined network operates in two independent modes, coupling a highly efficient, low duty cycle, low throughput mode for routing and persistent sensing with a burst mode for high data rate communication. By strategically distributing available frequency channels between the mobile agents and the stationary nodes, the overall network provides reliable long-term communication paths while maximizing data throughput when needed.
Keywords: mobile wireless sensor networks; WSN; MAV; TDMA; IEEE 802.15.4 mobile wireless sensor networks; WSN; MAV; TDMA; IEEE 802.15.4
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Mehta, A.; Kerkez, B.; Glaser, S.D.; Pister, K.S.J. TDMA-Based Dual-Mode Communication for Mobile Wireless Sensor Networks. Sensors 2012, 12, 16194-16210.

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