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Energy minimization is of great importance in wireless sensor networks in extending the battery lifetime. One of the key activities of nodes in a WSN is communication and the routing of their data to a centralized base-station or sink. Routing using the shortest path to the sink is not the best solution since it will cause nodes along this path to fail prematurely. We propose a cross-layer energy...
Node locations and distance are important in networks. This article assumes sensor nodes are distributed randomly and studies the energy consumption in a single regular hexagon and two adjacent regular hexagon. Meanwhile, distance distribution function is verified and point average energy consumption function is derived and simulated by using Monte Carlo method. The simulation results show that distance...
A hypothesis test based methodology for comparing propagation loss as reported by Modeling and Simulation (M&S) and a real life Wireless Sensor Network (WSN) platform is proposed. The methodology is based on hypothesis testing and statistical evaluation of experimental and simulation data. A software tool for verification of the simulation results is developed in order to automate the process...
The wireless sensor networks — RSSFs are composed of a large number of distributed nodes, reduced dimensions that work together to perform a task. This type of network has been the subject of intensive research, and has applicability in several areas, such as environment monitoring, robotics and in the medical field. This paper deals with the application of wireless sensor networks in the medical...
Wireless sensor networks (WSNs) which powered by batteries are widely used in military, healthcare, and scientific environments. One important challenge for setting WSN is the energy problem. Power management is one of efficient solutions for such problem and must be taken into account at all levels of the WSN. However, the power management may be out of action when the WSN suffers malicious attacks...
Sensor nodes commonly rely on wireless transmission media such as radio frequency (RF) and typically run on top of CoAP and TFTP protocols which do not provide any security mechanisms. One method of securing sensor node communication over RF is to implement a lightweight encryption scheme. In this paper, a RF Simulator developed in our previous publication which simulates lightweight security protocols...
In order to extend basic functions of wireless sensor network (WSN), many researchers have begun to study rechargeable wireless sensor networks that use of Wireless Charging Technology to supply power for sensor nodes so that the wireless sensor networks have the sustainability. The main classifications of wireless charger antenna are Directional Antenna and Unidirectional Antenna respectively. We...
In this paper, we propose an Intrusion Detection System (IDS) against Sinkhole attack in wireless sensor networks with mobile sink. In the detection model, the network area is divided into a flat grid of cells, and we use the signature-based technique, which is represented by the detection rate of a cell, to distinguish between real and fake sink nodes. The proposed IDS considers two types of sink...
Delay-Tolerant Mobile Sensor Network (DTMSN) distinguishes itself from traditional Wireless Sensor Network by several distinctive characteristics. Since end-to-end connections in DTMSN exist with certain probability, the conventional routing protocols for WSN may achieve poor network performance under these challenging scenarios. Hotspot-Based Adaptive Routing (HAR) is a routing scheme designed for...
Localization is a significant consideration in a Wireless Sensor Network (WSN), as it is essential to correlate sensor information with the geographic location it originates from. The DV-Hop algorithm, being a range-free, distributed algorithm, is an attractive option in this regard, due to its simplicity. In this paper, we present two algorithms to improve the localization accuracy of the DV-Hop...
In Wireless Sensor and Actor Network (WSANs), sensors and actors collaborate together to get the information about the physical environment and perform appropriate actions. In order to provide effective sensing and acting, a distributed local coordination mechanism is necessary among sensors and actors. In this work, we consider the actor node selection problem and we propose a fuzzy-based system...
Performance advancements in acoustic communication technology have fostered to provide technical platform for numerous interdisciplinary applications ranging from bathymetry, hydrographic surveys, disaster prevention, to tactical surveillance over underwater sensor networks (UWSN). Supporting real-time data transmission over error-prone UWSN is increasingly important as these networks become more...
In Wireless Sensor Networks, Sensors are generally battery powered devices. This networks is used to gather various kinds of information to Base station (BS). They consist of computational power, storage capacity, energy supply are the important issues in their energy constraint. To maximize the network lifetime, we need not only to minimize total energy consumption and also balance WSN load. In this...
A group of wireless devices with the ability to sense physical events (sensors) or/and to perform relatively complicated actions (actors), is referred to as Wireless Sensor and Actor Network (WSAN). In WSANs, sensors gather information about the physical events, while actors perform appropriate actions upon the environment, based on the sensed data shared by sensors. In order to provide effective...
Wireless Sensor Network (WSN) consists of hundreds of sensor nodes, which are tiny, low cost, low power radio devices. These nodes are dedicated to perform certain functions such as sensing the environment, collecting the sensed data from the surrounding area, processing those data and send the information to the observer. One of the major challenges in WSN is to cover the desired area which is used...
Compressive sensing (CS) based techniques have been demonstrated to be suitable for UWB based applications to reduce the sampling rate required at the receiver. However, current CS based UWB positioning techniques require high-rate mixing operations to generate the PN sequence to achieve random mixing. This paper proposed a modified CS based implementation that employs relatively low-rate random pre-mixing...
Participatory sensing enables to broadly collect information from mobile devices with embedded sensors. However, users have to use limited energy on the mobile devices as well as have to pay more communication fee when reporting sensory data to service providers. It is important to give them incentives to send information in participatory sensing systems. In this paper, we propose a novel incentive...
Data collection is an important operation in Wireless Sensor Networks. Sensors are deployed in given region of interest. They sense physical phenomenon and transfer data to a central node known as Sink. Tree is a widely used routing topology and Time Division Multiple Access (TDMA) is a widely used Medium Access Control (MAC) protocol. Sink is at the root of the tree. Often nodes in a tree aggregate...
In a typical monitoring system, physiological parameters such as Electrocardiography (ECG), Electromyography (EMG), and Electroencephalography (EEG) from various sensors placed strategically on human body are monitored for providing real-time feedback to the patient and medical staffs. For traditional point-to-point WBAN communication systems, sensors data are sent directly to the central sensor....
Wireless sensor networks have the capability to deliver the environmental data to the user. Among the significant data is the location of the node either in static or mobile. A number of network simulators were extensively reviewed specifically for the development of wireless sensor networks protocol. However, there is little work done in assessing the framework for localization simulation. This paper...
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