Wireless sensor networks (WSNs) have gained worldwide attention in recent years, particularly with the rapid progress in Micro-Electro-Mechanical Systems (MEMS) technology which has facilitated the development of smart sensors. These sensors are small, with limited processing and computing resources, and they are inexpensive compared to traditional sensors. These sensor nodes can sense, measure...

Wireless sensor networks (WSNs) are a technology of various uses from monitoring surrounding environment to collecting data. Because WSNs operate with limited resources of sensor nodes, its life is extended by cluster-based routing methods. However, WSNs which communicate through a wireless transmission medium are quite vulnerable in terms of security compared to wired networks and their sensor...

The recent area of Wireless Sensor Networks (WSNs) has brought new challenges to developers of net-work protocols. Energy consumption and network coverage are two important challenges in wireless sensor networks. We investigate intelligent techniques for node positioning to reduce energy consumption with coverage preserved in wireless sensor network. A genetic algorithm Is used to create energy...

Wireless sensor networks (WSNs) have emerged as an important and new area in wireless and mobile computing research because of their numerous potential applications that range from indoor deployment scenarios in home and office to outdoor deployment in adversary’s territory in a tactical battleground. Since in many WSN applications, lives and livelihoods may depend on the timeliness and correct...

Wireless Sensor Networks (WSNs) can provide low cost solutions to various real world problems. WSN consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants and to cooperatively pass their data through the network to a main location. To consider energy balancing for nodes is an impo...

Advances in the technology along with reduction in processor size, its memory, and wireless antenna size has facilitated the construction of low cost, low powered and multifunctional Sensor nodes which in turn led to high demand for development of Wireless Sensor Networks. A lot of research work has been done regarding the development of routing protocols for WSNs. This paper provides a brief o...

Wireless Sensor Networks (WSNs) are formed by a large collection of power-conscious wireless-capable sensors without the support of pre-existing infrastructure, possibly by unplanned deployment. With a sheer number of sensor nodes, their unattended deployment and hostile environment very often preclude reliance on physical configuration or physical topology. It is, therefore, often necessary to...

ISSUES AND CHALLENGES IN LOCALIZATION OF WIRELESS SENSOR NETWORKS Javed Iqbal Bangash, Abdul Hanan Abdullah, Abdul Waheed Khan Faculty of Computing, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia Tel.: +607-553-8761; Fax: +607-553-8822. E-mail: [email protected], [email protected], [email protected] ABSTRACT: The Wireless Sensor Networks (WSNs) can be used for many different appl...

This paper proposes a policy-based management framework for self-managed wireless sensor networks (WSNs) called SNOWMAN (SeNsOr netWork MANagement). In WSNs, a number of sensor nodes are deployed over a large area and long distances and multi-hop communication is required between nodes. So managing numerous wireless sensor nodes directly is very complex and is not efficient. The management of W...

Wireless sensor networks (WSNs) have received tremendous attention over the past ten years. In engineering applications of WSNs, a number of sensor nodes are usually spread across some specific geographical area. Some of these nodes have to work in harsh environments. Dependability of the Wireless Sensor Network (WSN) is very important for its successful applications in the engineering area. In...