In a heterogeneous wireless sensor network (WSN), relay nodes (RNs) are adopted to relay
data packets from sensor nodes (SNs) to the base station (BS). The deployment of the RNs …

While a lot of existing research attempts to extend the lifetime of a wireless sensor network
(WSN) by designing energy efficient networking protocols, the impact of random device …

Device deployment is a major challenge to successful implementation of large scale
wireless sensor network (WSN) applications. The number and positions of devices …

This paper considers the problem of communication coverage for sustainable data
forwarding in wireless sensor networks, where an energy-aware deployment model of relay …

Wireless sensor networks (WSNs) often operate in a harsh environment such as battlefield
and may suffer simultaneous failure of multiple sensors that cause the network to become …

We investigate the benefits of a heterogeneous architecture for wireless sensor networks
(WSNs) composed of a few resource rich mobile relay nodes and a large number of simple …

Existing work on placing additional relay nodes in wireless sensor networks to improve
network connectivity typically assumes homogeneous wireless sensor nodes with an …

Wireless sensor networks have been widely used for ambient data collection in diverse
environments. While in many such networks the nodes are randomly deployed in massive …

In some applications of wireless sensor networks (WSNs), it may be necessary to link a
number of disjoint segments in order to form a federated system. The segments can be …

Deploying sensor nodes randomly most of the time generates initial communication hole
even in highly dense networks. These communication holes cannot be totally eliminated …