Data aggregation processes aim to reduce the amount of exchanged data in wireless sensor networks and consequently minimize the packet overhead and optimize energy efficiency. Securing the data aggregation process is a real challenge since the aggregation nodes must access the relayed data to apply the aggregation functions. The data aggregation security problem has been widely addressed in cla...

A wireless sensor network is a collection of nodes ordered into a co-operative network. The nodes communicate wirelessly and frequently self-organize after being arranged in an ad hoc manner. In progress proposals for routing in sensor networks were optimize for the limited capabilities of the nodes and the application precise nature of the networks. Existing routing algorithms are not resource...

This paper investigates the research issues in Wireless Sensor Networks (WSNs), which is a new computing paradigm that emerged from the fusion of the SCADA (Supervisory Control and Data Acquisition) systems and Ad hoc networks technologies. WSNs provide network connectivity without the aid of any preexisting networking infrastructure. Very small sensor nodes, capable of sensing, data processing...

Wireless Sensor Networks (WSNs) are among others used to sense the environment. Applications supported by a WSN very often require among others accurate timing as well as the position of each WSN node. This paper presents a survey of different positioning algorithms used in wireless sensor networks. Also a comparison of these solutions is provided, using a set of WSN characteristics.

One of the most important issues concerning the sensor data in the Wireless Sensor Networks (WSNs) is the unexpected data which are acquired from the sensors. Today, there are numerous approaches for detecting anomalies in the WSNs, most of which are based on machine learning methods. In this research, we present a heuristic method based on the concept of “ensemble of classifiers” of data minin...

Wireless Sensor Networks (WSNs) nodes are generally have simple hardware design that can be classified as inflexible, support one or more applications, and inexpensive. These nodes are designed and programmed before their release on the application field and will stay on the field to support the need of the target application. Although the existing wireless sensor nodes are designed to support ...

Sensor networks provide a number of extensive programming challenges for Wireless Sensor Networks (WSNs) application programmers. Application developers have proposed various WSNs programming models to avoid these challenges and make WSN programming much easier. In this paper we proposed a new programming model to find the best routing path in WSNs and work on the coding of actual sensor nodes ...

Wireless sensor networks (WSNs) consist of thousands of tiny, inexpensive and lowpower sensor nodes that perform collaborative tasks and organize themselves into multihop networks. These sensor nodes are deployed over a given area, including both the terrestrial and underwater environments. Consequently, WSNs can be divided into terrestrial wireless sensor networks (TWSNs) and underwater wirele...

Wireless sensor networks (WSNs) and wireless mesh networks (WMNs) are popular research subjects. The interconnection of both network types enables next-generation applications and creates new optimization opportunities. Currently, plenty of protocols are available on the security of either wireless sensor networks or wireless mesh networks, an investigation in peer work underpins the fact that ...

Small world network(SWN) is an important characteristic in complex networks. Introduce SWN into the application of wireless sensor networks (WSNs) is very important to improve network performance. The paper make a survey on the WSNs based on the model of SWN, tries to draw a comprehensive and clear outline for the studies of SWN in WSNs. The studies are hopefully beneficial to the researchers o...