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Energy conservation has been known as the most important issue for many applications in wireless sensor networks (WSNs). For data gathering in a clustered sensor network, most existing work focuses on fusing data at cluster heads (CHs). However, in target tracking applications, these approaches do not consider that one target is usually detected by sensor nodes in multiple clusters, which leads to...
In the past decade, various hierarchical clustering methods have been proposed in order to efficiently minimize the energy consumption of sensor nodes. The energy consumption of such clustering methods heavily depends on the size of clusters and the number of member nodes. Existing methods form clusters by considering the distance between the sink node and each node. However, if clusters are formed...
Wireless Sensor Networks (WSNs) typically aggregate sensed events into a sink by Continuous Monitoring (CM) or Event-Detection (ED). Cluster heads receiving and sending aggregated data have a difficulty in maintaining traditional cluster-based WSNs due to the energy hole problem, which leads to faster energy depletion around the sink. This paper shows how reporting frequency to the sink can be controlled...
Wireless Sensor Network as an important technology of Internet of things' development, is more and more widely used in various research fields. This paper mainly researches the part of localization application based on wireless sensor network, focuses on DV-Hop localization algorithm, and gives its algorithm simulation and analysis of the simulation results. Also this paper improves the algorithm...
Railway track security is prime concern of railways. Very few approaches have been implemented concerning the track breakage detection. In this paper we are proposing an algorithm for deployment of vibration sensors on the track and simulating communication among the sensors in real time. We also suggest a method to regularly update train engine about the track's status and exact location of the track...
Wireless Sensor Networks (WSNs), comprising of tiny nodes with limited energy, computational and communication resources, are being widely used in various application areas ranging from pollution and weather monitoring to military. Even though every application may not require data to be exchanged in a secure manner, few WSN applications may have certain security requirements. The data is encrypted...
This paper proposes a new dynamic strategy for selecting the optimal cluster head in Stable Election Protocol (SEP). The proposed strategy selects a node as cluster head if it has the maximum energy among all the available nodes in that particular cluster. The maximum energy is that which is calculated at running time of the WSN. The proposed strategy considers heterogeneous nodes and divides nodes...
This paper deals with the recently investigated physical field model in wireless sensor network without additional infrastructure for location estimation, i.e. passive localization, in the form of partial differential equation (PDE) by employing the temperature distribution in the field. This novel framework can be defined into two steps. In the first step, the estimation algorithm of sensor node...
This paper discusses various techniques and algorithms that have been used over time for maximum power point tracking (MPPT) of various energy systems with special focus to wireless Sensor Network (WSN) applications. A brief comparison has been carried out, that evaluates several techniques w.r.t cost, implementation complexity and rejection to load disturbances. The non-linear behavior of the power...
Cluster based routing technique is most popular routing technique in Wireless Sensor Networks (WSNs). Due to varying need of WSN applications efficient energy utilization in routing protocols is still a potential area of research. In this research work we introduced a new energy efficient cluster based routing technique. In this technique we tried to overcome the problem of coverage hole and energy...
A wireless sensor network is of no use if it does not support proper communication among the sensor nodes. It is thus important to deploy sensor nodes such that high quality links are available for any communication path required during sensor network operation. In this work we describe a deployment algorithm which takes the link qualities between neighboring nodes of already deployed nodes into account...
This paper presents an improved localisation algorithm that allows estimating the positions of sensors, operating in multipath rich industrial environments. To enhance localisation accuracies, sensors transmit ultra wideband pulses to sets of receiving antennas. The proposed analytical algorithm, gives position estimates through a derivation of closed form solution of sets of non-linear equations...
Wireless Sensor Networks (WSN's) are being widely used in various civilian and military applications. In certain WSN applications, the data among the nodes and the Base Station (BS), needs to be exchanged in a secure manner. The encryption and decryption operations over the data involve additional energy overhead. Hence, it is required to use a security model, which offers security with less computational...
This article describes our approach to develop a novel system that will automatically select the best node in wireless sensor network, which is suitable for mobile code or mobile agent. We propose to use vague addresation of sensor nodes, that is based on geo-routing algorithms and takes into account other needs of mobile agent such as data validity of values sensed from specific sensor. We will discuss...
Location awareness is one of the key prerequisites in any kind of positioning system. Accurate positioning is required in a wide area of applications. One of them is pedestrian localization. In this paper we focus on the task of localization and tracking using a IEEE 802.15.4a CSS network. Data is obtained from Time Difference of Arrival (TDoA) measurements. In order to generate highly accurate position...
This paper deals with the problem of Distributed Estimation (DE) in binary Wireless Sensor Networks (WSN). Specifically, we propose to enhance the well-known Sign Of Innovation (SOI) based Extended Kalman Filter (SOI-EKF) [1] using the Unscented Transformation (UT) and iterative processing. The unscented transformation is especially used here to boost the quality of the predicted observation, already...
This paper presents an improved version of LEACH protocol which aims to reduce energy consumption within the wireless sensor network and prolong the lifetime of the network. This paper improves LEACH protocol by improving the election strategy of the cluster-head nodes based on remaining energy of sensor nodes, distance from base station and the number of consecutive rounds in which a node has not...
The three critical resources in any cluster based Wireless Sensor Networks (WSN) are Sensor Nodes (SN), Cluster Head (CH) and Base Station (BS). The main job of Cluster Head is to send all the aggregated data collected from multiple sensor Nodes to the Base Station. But before sending the data, the Cluster Head must be perfectly sure about the actual identity of Base Station. If any intruder acts...
Environmental monitoring performed by an Artificial Neural Network (ANN) in wireless sensor networks (WSN) has turned out to be a suitable application [1]. Its main advantage is high accuracy prediction of environmental parameters, such as temperature or humidity [2]. Although predictors reduce in general the transceiver energy, their corresponding algorithm requires high calculation effort that may...
A large number of innovative applications of wireless sensor networks (WSNs) demands accurate location estimation of sensor nodes. This would lead to proper identification of significant event locations. Several Received Signal Strength (RSS) based localization schemes have been proposed with multiple anchor nodes. In this paper, we propose a novel localization algorithm based on RSS measurements...
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