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A Wireless Sensor Network is an assortment of nodes organized into a cooperative network. Wireless Sensor Networks (WSNs) are subjected to node failures because of energy constraints; also nodes can be added to or removed from the network upon application demands, leading to unpredictable topology changes. Bursty traffic resulted from the detected events will simply cause congestion within the networks,...
Generally the data sensed by the sensors are collected and routed to the sink in a specific manner for further processing. In this proposed work, the sink node is dynamic rather than being mobile. The dynamic sink collects the data from the pervasive environment continuously. The dynamic route (path) to the sink is established, maintained and updated. Finally the comparison is made between the mobile...
Geographic Routing is suitable for the limited resource in wireless sensor networks and Ricci flow-based methods have been employed. Unfortunately, iterative process through previous methods may spend abundant energy in order to discovery route, which obviously effect their advantageous of this sort of schemes. In this paper, we focus on avoiding unnecessary iterations and propose an algorithm through...
In this article, we consider software-defined wireless sensor networks (SDWSNs) and propose a scheme for sleep scheduling with low control overhead-based flow-entry in flow-table to overcome the limitation of control traffic in SDWSNs.
In this era of wireless communication, Wireless Sensor network (WSN) has drawn considerable attention to the researchers. This paper proposes a new scheme of energy efficient routing technique in WSN for surveillance of agricultural field from a distance place. In this scheme, a crop field is equipped with different types of sensor nodes with limited power source, placed randomly for sensing various...
Wireless Sensor Networks (WSNs) consist of multiple sensors distributed in a certain geographic area. The goal of using WSNs is to monitor certain phenomena such as; environmental or physical. The nodes in WSNs transmit data through a wireless network that lacks infrastructure, which makes those networks exposed to security threats. One of those security threats is the black-hole attack which can...
Wireless sensor network (WSN) is the interconnection of wireless nodes with limited energy and memory. These networks can be deployed for many critical applications like military operations, rescue management, fire detection and so on. In flat routing structure every node plays equal role of sensor and a router. The topology may change very frequently due to the mobile nature of nodes in WSNs. Maintaining...
Security in wireless sensor networks is critical due to its way of open communication. In this paper we have provided a solution to detect malicious nodes which perform radio transmission power control attack and sinkhole attack in wireless sensor networks. In the proposed approach, data transmission is divided into multiple rounds of equal time duration. Each node chooses the parent node in the beginning...
Context-awareness is an essential demand for pervasive computing applications, which enables them to accommodate and execute tasks based on setting. Ace of the adaptive features of context-awareness is contextual reconfiguration. Contextual reconfiguration involves discovering remote service(s) based on context and binding them to the application components to realize new behaviors, which may be needed...
In this paper we consider the problem of hosting multiple applications in software-defined wireless sensor networks (SD-WSNs). The applications vary in terms of terms of the number and type of sensing tasks required. Since WSN nodes are very resource constrained, one of the major challenges when scheduling the sensing tasks is to balance the energy consumption and maximize the operational time of...
In this paper, we propose, design and experiment an energy efficient protocol for Wireless Sensor Networks (WSNs) named Opportunistic Duty cYcle based routing protocol for wirelesS Sensor nEtworks (ODYSSE). The main key innovation of ODYSSE is that it judiciously makes use of three mechanisms. The first one is duty cycling which consists in randomly switching on/off transceivers to save energy. The...
Graph-based topology control adapts wireless topologies to achieve certain target graph structures. Wireless sensor networks seem well-suited for the expectations (in particular those on provided energy savings) raised by topology control. Nevertheless, topology control has never made the breakthrough in real-world deployments. This work explores the reasons for this, identifying five practical obstacles...
Evolution in the field of Micro-Sensor devices have accelerated progress in the sensor network ruling protocols which design for Wireless Sensor Networks. The design consists with hundred to thousands of sensor nodes can assemble information from abandoned position and transfer data to specific use. This paper has focused on the different applications of WSNs and design constraints in routing protocols...
Recent advancement in wireless communications and electronics has enabled the development of low-cost sensor networks. The sensor networks can be used for various application areas (e.g., health, military, home). Wireless sensor networks consist of small nodes with sensing, computation, and wireless communications capabilities. Many routing, power management, and data dissemination protocols have...
Given the fact that LEACH protocol didn't take the residual energy of nodes into account when choosing the cluster heads, which may result in the node with rather low energy to be chosen as a cluster head. Thus, it will cause the cluster created by this low-energy node to be dead at an early stage, which wastes the whole network's resource. Here in this paper, we introduced an energy factor when choosing...
For mission-critical application of WSN, it's essential to guarantee multi-QoS requirements including of delay and reliability as far as possible. The existing multipath routing methods fulfill QoS demands by disseminating the redundant replica over multiple paths, leading to low energy efficiency and higher delay. In this paper, a novel Directional Transmission based QoS-aware Opportunistic Routing,...
In wireless sensor Networks, sending data consumes energy which affects the lifetime of the network. Since Routing protocol plays an important role in this process, designing a routing protocol must take into a count energy consumption in order to increase the lifetime of the network. In this paper, we propose an improved multipath leach protocol which uses at most one intermediate cluster head. The...
Underwater Wireless Sensor Network (UWSN) is emerging lots of attention due to its various types of characteristics and applications. Distinctive underwater characteristics leads to many challenges such as-high propagation delay, data losses, nodes mobility, localization, nodes deployment while designing any reliable and efficient routing protocol. In this paper, an extension of CDBR (Forwarding nodes...
Recently, Wireless Sensor Networks (WSNs) have been employed in many real-world applications that greatly improve our life. Therefore, security in WSNs is a challenging task due to inheritance limitations of sensors and it becomes a good topic for researchers. In this work, we focus at secure hierarchical routing protocols in wireless sensor networks and represent selected approaches which focusing...
Science of networking is still a relatively immature area. Proposing an efficient dynamic routing protocol for MANET is an arduous and provoking task. Various protocols for routing phenomenon have been proposed to IETF [1]. Considering an ad-hoc network which is specified by frequently changing topology and infrastructure less connectivity, a protocol must be tested under realistic conditions but...
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