Reliable Coverage with Circumferential WMSNs

This work tackles the closed peripheral coverage issue. Such circumferential surveillance is essential in numerous realistic applications where the goal is to ensure rapid detection of any unauthorized entry/exit of the monitored area. To respond to these requirements, peripheral WMSNs can be rapidly deployed around areas of interest (e.g., temporary military camps, natural or nuclear disasters, etc.). While it seems simple, this solution raises two major challenging issues. First, checking whether the deployed peripheral WMSN forms a closed shape around the monitored region. That is, any object trying to leave or access this area must be instantaneously detected by at least one multimedia sensor node. Second, instead of activating all the deployed redundant sensor nodes, and hence, vainly wasting their scarce resources, an efficient scheduling technique must be proposed. We remedied these problems by proposing and evaluating a distributed algorithm that was specifically designed to fit the peculiarities of WMSNs.