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A Wireless Sensor Network consists of enormous amount of sensor nodes. These sensor nodes sense the information from the sensing region and transmit to the sink. From the sink a client can access the required information. Essential part of the wireless sensor network is the sensor nodes that are driven with the batteries. Prolonging the network lifetime is very difficult and expensive in many conditions...
Wireless sensing element Network may be a network distributed in universe. This one consists of big quantity of nodes that are helpful in assembly of information within the various setting. However the nodes operate on battery of adequate power. As the nodes died, the network time period is reduced. Thus raising the network time period is final issue of sensing element network. This paper proposes...
Wireless sensor network is one of the emerging technologies in wireless networks and communication. WSN composed of large number of small sensors which senses the physical situations occurred in the environment. For WSNs, energy efficiency is the main challenge and to create efficient networks, sophisticated routing algorithms are designed. Clustering algorithm is one of technique used in WSN to minimize...
Sensor nodes depend on power source, but they deplete rapidly. The major issues of Wireless Sensor Network (WSN) are its energy source constraints. We are able to solve this issue by using clustering architecture. In this paper we study about various clustering techniques used in WSN. The large-scale deployment of WSNs and the need for data aggregation resolve this issue mainly. Clustering is best...
Wireless sensor network consists of micro electro-mechanical sensor nodes which are operated by battery power. Sensor nodes lose energy for computation and communication. It is very difficult to recharge their battery as they are deployed in a remote place. Thus, power efficient routing in wireless sensor network is the main challenge for researchers. Hierarchical routing is one of the efficient techniques...
Clustering is an important concept in the area of wireless sensor network research because of the large number of capability-limited sensors. Most of the clustering algorithms proposed so far in the literature needs the complete topology in the memory and faces the problem of exponential increase of execution time with the size of the topology. In this paper, we propose a distributed neighbor discovery...
This paper presents a new deployment formulation in order to improve coverage in Sensor Networks. Sensor deployment is an important issue in designing sensor networks. This paper studies the geometric properties of voronoi diagram, addressing a divide-and-conquers deployment protocol in an area of interest. This novel methodology can deploy homogeneous sensor while heterogeneous sensor in whole area...
Barrier coverage that requires much fewer sensors than full coverage, is known to be an appreciate model for detection applications. Early results have shown how to construct barriers by both randomly and planned deployment in belt regions. In randomly deployment condition, there may be more than one barrier in a belt region. We present a solution for sliding barriers among the sensors that are deployed...
One of the most critical issues in the wireless sensor networks is the network's nodes limited availability of energy. The network lifetime strictly depends on its energy efficiency. Clustering is a method to make the consumed energy efficient. LEACH is one of the fundamental clustering algorithms. In this paper we have proposed an algorithm which extends LEACH by considering number of neighbors and...
Recent advancements in processor, memory and radio technologies have enabled cheap and small sensors which are capable of sensing, communication and computation. Most of the Wireless Sensor Networks have limitation of battery power and in most of the applications it is not possible to replace the battery of a node. Considering this scarce energy and processing resources of WSN, we try to establish...
In Wireless Sensor Networks, the traffic is light under idle or light load. When an event is detected the network becomes active and the data flow traffic becomes heavy, which leads to congestion. Congestion plays an vital role in reducing the performance of the network. Hence it necessitates to develop an effective congestion control technique. This paper focus on congestion detection and control...
The recent interest in Wireless Sensor Networks has led to a number of clustering algorithms that use the limited energy available at sensors more efficiently. In this article, we present a heritable clustering algorithm based on HEED for low energy wireless sensor network. It brings in appointment mechanism to reduce the cluster head reelect overhead efficiently. In the cluster, TDMA communication...
Since we are not able to replace the battery in a wireless sensor network, the issues of energy and lifetime are the most important parameters. In asymmetrical networks, different sensors with various abilities are used. Super nodes, with higher power and wider range of communication in comparison with common sensors, are used to cause connectivity and transmit data to base stations in these networks...
In recent years, many time synchronization protocols for wireless sensor networks are presented and reducing the number of synchronous data packets in transmission has become a new research breakthrough. In this paper, the nodes with amount of power held are placed in different areas where the two nodes may exchange the synchronization information. This way does not only efficiently use of energy...
A wireless sensor network (WSN) consists of hundreds or thousands of energy-limited sensors. Distributing energy dissipation evenly throughout the sensors and saving energy are important goals in designing of WSN protocol. In this paper, we propose an improved energy-efficient algorithm based on L-DCHS (IEAL), it adds a cluster head in each cluster with a novel method, and prolong the steady-state...
Wireless sensor networks consist of a large number of sensor nodes with limited power and resource. To prolong network lifetime, the energy consumption must be somehow reduced. In this paper, we propose a localized density control algorithm for energy savings. The goals are to maintain a minimal number of active sensor nodes and to reduce radio-traffic intensity while conserving the sensing coverage...
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
Wireless sensor networks consist of a large number sensors spread across a given geographical area. Each sensor has its own communication capability as well as certain level of intelligence for signal processing and networking. As the sensor nodes are densely populated, communication range requirement for these nodes is smaller. After signal detection, a number of sensor nodes communicate over the...
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