Wireless Sensor Networks (WSNs) is an emerging area of research. WSNs face lot of problems that do not arise in other types of wireless networks and computing environments. Limited computational resources, power constraints, low reliability and higher density of sensor nodes (motes) are some basic problems that need to be considered while designing or selecting a new operating system for perfor...

Wireless sensor networks (WSNs) are required to provide different levels of Quality of Services (QoS) based on the type of applications. Providing QoS support in wireless sensor networks is an emerging area of research. Due to resource constraints like processing power, memory, bandwidth and power sources in sensor networks, QoS support in WSNs is a challenging task. In this paper, we discuss t...

The use of wireless sensor networks (WSNs) has grown enormously in the last decade, pointing out the crucial need for scalable and energy-efficient routing and data gathering and aggregation protocols in corresponding large-scale environments. To maximize network lifetime in Wireless Sensor Networks (WSNs) the paths for data transfer are selected in such a way that the total energy consumed alo...

Wireless Sensor Networks are a Collection of Sensor nodes.Wireless sensor network become so much popular in many fields due to its functionality i.e military, industrial area etc.Security is the important and critical issue in the Wireless networks due to the operating nature of WSNs. This Paper describe the security requirements as WSNs are easily prone more attacks than wired networks. This p...

In this paper, we discuss the QoS requirements in WSNs and present a survey of some of the QoS aware routing techniques in WSNs.Wireless sensor networks (WSNs) are required to provide different levels of Quality of Services (QoS) based on the type of applications. Providing QoS support in wireless sensor networks is an emerging area of research .Due to resource constraints like processing power...

A few years ago, wireless sensor networks (WSNs) used by only military. Now, we have seen many of organizations use WSNs for some purposes such as weather, pollution, traffic control, and healthcare. Security is becoming on these days a major concern for wireless sensor network. In this paper I focus on the security types of attacks and their detection. This paper anatomizes the security requir...

Wireless sensor networks are often used for monitoring sensitive data. Therefore security is a significant issue in WSNs. We point out the constraints, security requirements and attacks in WSNs. Clustering is the concept which increases the network scalability and decreases the energy consumption in WSNs. This article presents importance of clustering and clustering algorithm in WSNs. We first ...

–Wireless Sensor Networks (WSNs) differs from traditional wireless networks in several ways. One of them is energy constraints. Sensor nodes (SNs) are battery operated, with limited life and difficult to replace, if deployed in hostile environment. Therefore protocols in WSNs must be designed with minimum energy consumption to prolong the network life. In WSNs protocols are designed to minimize...

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...

Wireless Sensor Networks (WSNs) have grown to become one of the most promising and interesting fields over the past few years. WSNs are wireless networks consisting of distributed sensor nodes which cooperatively monitor physical or environmental conditions. A sensor node is a tiny and simple device with limited computational resources. Sensor nodes are randomly and densely deployed in a sensed...