The popularity of cell phones, laptops, PDAs and intelligent electronics has made computing devices to become cheaper and more pervasive in daily life. The desire for connectivity among these devices has caused an exponential growth in wireless communication. Wireless sensor networks (WSNs) provide an example of this phenomenon. WSNs belong to the general family of sensor networks that employ d...

Collaboration is crucial to Wireless Sensor Networks (WSNs) as a result of the typical resource limitations of wireless sensor nodes. In this paper, we present a model of collaborative work for WSNs. This model is called Wireless Sensor Networks Supported Cooperative Work (WSNSCW) and was created for these specific networks. We also present the formalization of some entities of the model and it...

We show how recent theoretical advances from [11, 4, 8, 9] for data-propagation in Wireless Sensor Networks (WSNs) can be combined to improve gradient-based routing (GBR) in Wireless Sensor Networks. We propose a mixedstrategy of direct transmission and multi-hop propagation of data which improves the lifespan of WSNs by reaching better energy-loadbalancing amongst sensor nodes. [10].

wireless sensor networks (wsns) consist of a large number of sensor nodes which are capable of sensing different environmental phenomena and sending the collected data to the base station or sink. since sensor nodes are made of cheap components and are deployed in remote and uncontrolled environments, they are prone to failure; thus, maintaining a network with its proper functions even when und...

The security topic is a conclusive challenge for Wireless Sensor Networks (WSNs) due to the deployment nature and the resources limitations of wireless sensor devices used in such networks. Wireless Sensor Networks are used sometime in very sensitive applications, such as military, airports, and healthcare. Therefore, we must address the security concerns from the beginning of network design. D...

wireless sensor networks (wsns) arebecoming increasingly popular, and very useful in militaryapplications and environmental monitoring. however,security is a major challenge for wsns because they areusually setup in unprotected environments. our goal in thisstudy is to simulate an intrusion detection system (ids)that monitors the wsn and report intrusions accurately andeffectively. we have thus...

This paper describes the concept of quality of services in wireless sensor networks (WSNs) in terms of small size sensor, low cost, low power, routing and capacity of wireless networks. By providing quality of service (QoS) support in wireless sensor networks is a hospital budding part of research. Due to excessive resources constraint, bandwidth and power sources in sensor networks and also cu...

The security in wireless sensor networks (WSNS) is a very important issue. These may be exposed it different attacks. With this mind, researchers propose area variety of techniques for purpose, and article describes networks. Discussed threats attacks also aims to provide the basic information related determining essential requirements protection WSNs. Lastly, we mention some mechanisms against...