Wireless Sensor Networks are utilized for collecting physical information from a distant place by using sensing devices called sensors. In order to collect information more efficiently, wireless sensor networks (WSNs) are partitioned into clusters. This approach is an effective way to prolong the lifetime of WSNs. While using clustering approach the major concern is the choice of a suitable clu...

Wireless Sensor Networks (WSNs) consist of thousands of tiny nodes having the capability of sensing, computation, and wireless communications. Many routing, power management, and data dissemination protocols have been specifically designed for WSNs where energy consumption is an essential design issues. Since wireless sensor network protocols are application specific, so the focus has been give...

Routing in Wireless Sensor Networks (WSNs) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. Since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in WSNs. Most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

In this paper we present a demonstration of a novel management architecture for heterogeneous wireless sensor networks (WSNs) called MARWIS. The architecture supports common management tasks such as monitoring, (re)configuration, and updating program code in a WSN. It considers specific characteristics of sensor nodes. To handle large heterogeneous WSNs MARWIS divides it into smaller sensor sub...

Accurate information is most important in Wireless Sensor Networks (WSNs). Incorrect (faulty data) information makes wrong decision; it decreases the reliability in communication. Fault tolerance is one of the issues in WSNs .Proposed fault tolerant data aggregation scheme for identifying the faulty data sent by the sensors to the cluster head, where the aggregation is performed. Identified fau...

Random Key Distribution (RKD) schemes have been widely accepted to enable low-cost secure communications in Wireless Sensor Networks (WSNs). However, efficiency of secure link establishment comes with the risk of compromised communications between benign nodes by adversaries who physically capture sensor nodes. The challenge is to enhance resilience of WSN against node capture, while maintainin...

Wireless Sensor Networks (WSNs) have been widely considered as one of the most important technologies for the twenty fi rst century [1] . Enabled by recent advances in microelectronicmechanical systems (MEMS) and wireless communication technologies, tiny, cheap, and smart sensors deployed in a physical area and networked through wireless links and the Internet provide unprecedented opportunitie...

in wireless sensor networks, optimal consumptionof energy and having maximum life time are important factors. in this article attempt has been made to send the data packets with particular reliability from the beginning based on aodv protocol. in this way two new fields add to the routing packets and during routing and discovering of new routes, the lowest remained energy of nodes and route tra...

Wireless Sensor Networks (WSNs) consist of small nodes with sensing, computation, and wireless communications capabilities. Many routing, power management, and data dissemination protocols have been specifically designed for WSNs where energy awareness is an essential design issue. In wireless sensor networks (WSN) power is the most essential resource because sensor node has limited batteries. ...

Wireless Sensor Networks (WSNs) are used in many commercial, military, industrial, research and medical applications. Because of the limited resources of the sensor nodes in the wireless environment, these networks impose special security requirements besides to the security needs in traditional networks. This study presents the security problems in WSNs and discusses the security protocols bas...