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During their lifetime, multihop wireless mesh networks (WMNs) experience frequent link failures caused by channel interference, dynamic obstacles, and/or applications' bandwidth demands. These failures cause severe performance degradation in WMNs or require expensive manual network management for their real-time recovery. This paper presents an autonomous network reconfiguration system (ARS) that...
Clustering is an effective approach to hierarchically organizing network topology and to prolong the lifetime of a wireless sensor network. Current clustering protocols usually utilize two techniques: selecting cluster heads with more residual energy and rotating cluster heads periodically to distribute the energy consumption among nodes in each cluster. Most of the researches in this field has focused...
Graph routing is proposed in wireless HART communication foundation, but the implementing of the algorithm is not specified. This paper proposes a graph routing mechanism termed ELHFR (exhenced least-hop first routing) that exploits the mesh topology and application characteristics of wireless HART. ELHFR defines the network topology as a connected graph then generates the sub-graph that includes...
Recently, an energy aware data centric routing protocol (EAD), was proposed and its performance outperforms other existing routing protocols such as LEACH. However, EAD has an inherited problem that only closed nodes to the sink will be chosen as gateways which eventually leads into isolating the rest of the network's nodes even though they still have enough power to communicate with the sink. In...
Internet Relay Chat (IRC) is a critical application in military networks for maintaining situational awareness and conducting battle management at all echelons. But these networks are often subject to frequent disconnections, limited bandwidth, and long delays, especially when using satellite services and field radios. Such conditions are inhospitable to TCP, and thus the standard IRC protocol, which...
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