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Wireless Sensor networks (WSN) is basically comprised of sensors that are spatially distributed with self-ruling capability, which monitors physical or environmental conditions such as, pressure, temperature, motion, sound and so on. Sensors also passes all the related information throughout the network. As the number of nodes and size of the network increases, there will be rapid increase in internet...
In order to build a reliable traffic to overcome ever-changing scenarios with different QoS requirements for WSN-based M2M applications, a cognitive technology using the causality tree is proposed for the reliability maintenance of wireless sensor networks. Routing maintenance metrics are defined as basic initiatives for device maintenance. The metrics enable to guarantee quality of services for the...
In the recent years, Wireless Sensor Networks (WSNs) have become a great field of interest for scientific community. This kind of network provides a panoply of applications in different areas of human life. However WSNs must ensure the quality of service (QoS) to give the requested performance for the final user. Among different issues presented in the literature to provide high QoS, multipath routing...
Wireless multimedia sensor networks (WMSNs) is one of the hotest topic nowadays which attracts more and more researchers as being an interdisciplinary research interest. Its cost decreases continously due to advances in micro-electromechanical systems, and the proliferation and progression of wireless communications. However, the transmission of multimedia information must satisfy QoS criteria which...
Several Routing Protocols have been proposed and developed in the last few years for Wireless Sensor Networks (WSNs). Since there has been increasing interest in the development of Wireless Sensor Networks to specific applications, it is necessary to discuss routing techniques suitable to the application and segregate the Quality of Service (QOS) parameters specific to the application domain along...
Routing is an important issue in WSNs with the sensor nodes having limited processing power, memory etc. In this paper we present a query-based routing protocol for a WSN that provides different classes of Quality of Service (QoS) in terms of energy-efficiency, reliability, low latency and fault tolerance for different application requirements. The algorithm has low computational overhead while guaranteeing...
In a resource constrained wireless sensor network (WSN), communication tasks can be expensive in terms of power consumption. Thus, when good communication is required, a mechanism that can maximize the chances of a successful transmission of information via wireless network is very desirable. The Opportunistic Routing (OR) protocol has been proposed as an alternative and efficient method for exploiting...
This paper is to solve the problem of route resources waste in flow-based QoS routing protocol for WSN. Competition for limited resources will rose when there are two or more real time data flows between same source node and destination node, Variable ??port?? is set to identify different real time data flows before, which also leads to waste of route resources. Thus we set a time variable called...
Intermittent connected mobile sensor networks (ICMSN) have emerged in recent studies, e.g. underwater sensor networks, wildlife tracking and human-oriented flu virus monitoring. In these networks, there are no end to end connections from sensor nodes to sink nodes due to low node density and node mobility. Therefore, conventional routing protocols in WSN are not practical for ICMSN since packets will...
In wireless sensor networks (WSNs), message security is an important concern. The protection of integrity and confidentiality of information and the protection from unauthorized access are important issues. However, due to factors such as resource limitations, absence of centralized access points, open wireless medium and small size of the sensor nodes, the implementation of security in WSNs is a...
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