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Recently, a barrier-coverage has gained much interest due to potentiality of various applications. In this letter, we introduce a reinforced barrier-coverage in heterogeneous wireless sensor networks, which guarantees that any penetration variation of intruder is detected by at least one sensor with a consideration of heterogeneous sensors with different capabilities. Also, we formally define a problem...
A fundamental problem in Wireless Sensor Networks (WSNs) is to balance energy and extend network lifetime, whereby the goal is to guarantee a long time monitoring in area-of-interest. To this end, this paper propose a Heterogeneous Energy Harvesting uniform distribution Wireless Sensor Networks (HEH-WSN) to maximize network lifetime by effective scheduling sensor node status whilst ensuring the coverage...
Wireless Sensor Network is a network of small battery powered sensing devices (known as sensing nodes), capable of sensing the physical parameters like temperature, humidity, pressure, motion, etc. from its environment of deployment and report it to a central node called base station. These nodes collaborate with each other to fulfill their task. As the energy source is constrained in WSNs, it should...
Fast deploying and networking in a disaster area are of great importance. Firstly, we propose an architecture of Emergency Medical Networks in this paper. The objective of this study is to achieve the optimality of heterogeneous sensor nodes assignment in this network. To obtain the needed coverage, network designers initially need to determine how many sensor nodes should be deployed in the disaster...
Wireless Sensor Networks are composed of thousands of sensor nodes, with restricted energy that cooperates to accomplish a sensing task. The homogeneous sensor nodes have same capacity in term of sensing, computation, communication, and power. The different application leads different types of sensor network in real life so the heterogeneous sensors exist. This leads to the researcher to develop the...
In heterogeneous sensor networks, some nodes become cluster heads which aggregate the data of their cluster nodes and transmit it to the sink. Here, the authors present an extended Stable Election Protocol (SEP) algorithm for cluster head selection in a hierarchically clustered heterogeneous network to reorganize the network topology efficiently. The presented algorithm considers the sensor nodes...
Wireless sensor networking is envisioned as an economically viable paradigm and a promising technology because of its ability to provide a variety of services, such as intrusion detection, weather monitoring, security, tactical surveillance, and disaster management. The services provided by wireless sensor networks (WSNs) are based on collaboration among small energy-constrained sensor nodes. The...
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