Purposeful Mobility in Tactical Sensor Networks

Adding mobility to sensor networks can significantly increase the capability of the sensor network by making it resilient to failures, reactive to events, and able to support disparate missions with a common set of sensors. Mobility in sensor networks may be controllable, and hence be used to help achieve the network’s missions. That is, mobility may be “purposeful” instead of being treated as an uncontrollable external stimulus to which the ad-hoc networks must respond. To make use of the purposeful mobility, we propose techniques for mobility assisted sensing and routing considering the computation complexity, network connectivity, energy consumption of both communications and movement, and the network lifetime. We also define utility functions that can capture the benefits of the movement from the perspective of all missions, and maximize the capability of the network.

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