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This paper describes the main features of an advanced communication model aimed to enhance the protection of critical energy assets against man-made attacks (terrorism) or natural disasters. The proposed model is based on a hybrid network architecture, which combines the advantages of different wireless technologies, such as Delay/Disruption Tolerant Networking, Mobile Ad-hoc Networks, and Wireless...
Device deployment plays a key role in the performance of any Wireless Sensor Network (WSN) application. WSN device deployment (i.e. the numbers and positions of the devices) must consider several design factors, like coverage, connectivity, lifetime, etc. However, connectivity remains the most fundamental factor especially in harsh environments. Extensive work has been applied on connectivity in WSN...
Building a wireless sensor network first of all requires the constituting nodes to be developed and available. These nodes have to met the requirements that come from the specific requirements of a given application. They might be small, cheap (energy efficient), they have to be equipped with the right sensors, the necessary computation and memory resources, and they need adequate communication facilities,...
Multiple studies suggest that the level of patient care may decline in the future because of a larger aging population and medical staff shortages. Wireless sensing systems that automate some of the patient monitoring tasks can potentially improve the efficiency of patient workflows, but their efficacy in clinical settings is an open question. This article examines the potential of wireless sensor...
Wireless Sensor Networks are traditionally composed of a multiplicity of sensor nodes that sense given phenomena and deliver the sensed data to specific sink nodes. In the most of the application scenarios, sensor nodes have been considered motionless. On the contrary, interesting possibilities arise if some sensors are embedded in devices carried by mobile agents as people, cars, animals, etc. If...
Localisation and tracking of nodes in wireless sensor networks is valuable in many applications, and is the primary purpose of the network in applications such as for monitoring emergency service personnel and athletes for performance monitoring. Performing high accuracy tracking using low-cost hardware in difficult radio propagation environments is extremely challenging, and the CSIRSO WASP system...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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