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Wireless sensor network is built by deploying sensor nodes in the environment. Sensors perform the monitoring task substituting human presence at the site. Sensor nodes are freely deployed in the real time environment. Sensor nodes work on in-built batteries because it's not possible to provide power in the real time scenarios. Sensor nodes are freely deployed in the network without any supervision...
An efficient energy management is a key issue in battery equipped wireless sensor networks (WSNs). Clustering is attested to be an efficient method to construct hierarchical topology that can enhance the lifetime of wireless sensor network. In this paper, an energy efficient fault tolerance nested clustering algorithm (E2FNC) for the wireless sensor network is proposed. This constructs two levels...
In a wireless sensor network the delivery of the data packet from source to destination may be failed for various reasons and major due to failure-prone environment of networks. This may happen due to the topology changes, node failure due to battery, exhaust or breakdown of the communication module in the wireless node and results in the link failure. This paper addressed the major problem of link...
Wireless Sensor Networks (WSNs) are prone to faults due to battery depletion of nodes. A node failure can disturb routing as it plays a key role in transferring sensed data to the end users. This paper presents a Fault-Tolerant and Energy-Aware Mechanism (FTEAM), which prolongs the lifetime of WSNs. This mechanism can be applied to cluster-based WSN protocols. The main idea behind the FTEAM is to...
In this paper, the clustering of wireless sensor network has been equaled to constructing maximal independent set in graph theory, and a clustering algorithm with “self-stabilizing” and “fault containment” properties, which is considered as a critical feature in the issue of fault tolerance for distributed systems, is proposed. Existing comparable methods include no fault containment and their design...
Wireless sensor network (WSN) is undoubtedly an area of sophisticated research work. The credibility of this astonishing system may be affected by faults due to harsh and hazardous natural calamities from time to time. A WSN that is not ready to deal with such challenging situations may suffer a reduction in overall lifetime or may lead to dire consequences in critical application context. So fault...
Wireless sensor network consists of a set of tiny sensor nodes. The nodes are continuously sense and transmit the data to the base station. Therefore, energy consumption and network coverage are important issues to improve the life time of the network. Clustering architecture is an effective architecture to reduce the energy consumption. The main aim is to increase network lifetime as well as increase...
Node in WSN has its own local clock, and it's difficult to achieve long-term time synchronization between nodes due to some internal and external factors. Within the factors, a special one is Byzantine general problem which will be discussed in this article. Considering the special circumstance that some nodes of the wireless sensor network have the same clock, an improved HRTS algorithm which based...
Wireless Sensor Networks (WSNs) are ad hoc networks formed by tiny, low powered, and low cost devices. WSNs take advantage of distributed sensing capability of the sensor nodes such that several sensors can be used collaboratively to detect events or perform monitoring of specific environmental attributes. Since sensor nodes are often exposed to harsh environmental elements, and normally operate in...
Structural health monitoring (SHM) brings new challenges to wireless sensor networks (WSNs) : large volume of data, sophisticated computing, engineering-driven optimal deployment, and so forth. In this paper, we address two important challenges: sensor placement and decentralized computing. We propose a solution to place sensors at strategic locations to achieve the best estimates of geometric properties...
Sensors in a Wireless Sensor Network (WSN) are prone to failure, due to energy depletion, hardware failures, etc. Fault tolerance is one of the critical issues in WSNs. The existing fault tolerant mechanisms either consume significant extra energy to detect and recover from the failures or need to use additional hardware and software resource. In this paper, we propose a novel energy-aware fault tolerance...
Target tracking is one of the most important and energy killer applications in wireless sensor networks (WSNs). Fault tolerance to any failure is an essential in this context. Hence, we introduce a novel approach toward Base Station (BS) oriented clustering and tracking in WSNs. Proposed method overlooks ad-hoc ability of WSNs to earn energy efficiency and fault tolerance. BS is a powerful energy...
Many routing protocols on clustering structure have been proposed in recent years. In recent advances, achieving the energy efficiency, lifetime, deployment of nodes, fault tolerance, latency, in short high reliability and robustness have become the main research goals of wireless sensor network. Many routing protocols on clustering structure have been proposed in recent years based on heterogeneity...
Wireless sensor network reliability is a growing concern as most of the sensors are expected to operate in an unattended manner for long periods of time. Therefore it is important that they should be able to tolerate faults and maintain a reasonable level of performance. To this end, in this paper we explore two De Bruijn and mesh based topologies and its fault tolerant routing scheme and a distributed...
In WSNs, energy conservation is the primary goal, while throughput and fault tolerance are other important factor. According to wireless sensor network nodes energy consumption, hardware failure and communication factors, in this paper, an evolving network method based on complex network theory of small-world Kleinberg model is proposed, which uses long links and short links in partial view information...
Clustering in wireless sensor networks is one of the crucial methods for increasing of network lifetime. There are many algorithms for clustering. One of the cluster based algorithm in wireless sensor networks is LEACH algorithm. In this paper we proposed a new clustering method for increasing of network lifetime. In proposed method Clustering is done symmetrically and the best node with respect to...
This paper presents a clustering routing protocol for event-driven WSNs with Reduction of Reporting node in each cluster. We demonstrate that decreasing the number of reporting nodes in each cluster; increase the number of reports that need to be sent to the sink in order to achieve the energy efficient and desired information reliability. The algorithm also aims at even energy dissipation among the...
One of the major issues in wireless sensor network applications is the way how to minimize energy consumption in the process of data transfer. Data in wireless sensor networks should be aggregated in order to save energy and bandwidth. There are lots of works on the area of fault-tolerant and efficient data aggregation for WSNs in different approach. In this paper an efficient fault tolerant data...
Increasing network lifetime, scalability and load balancing are important factors for wireless sensor networks. Clustering is a useful technique through which we can effect these factors. In this paper, we propose a new method of clustering which prolongs network lifetime by using energy, density and centrality factors and also the distances between nodes for making clusters. We assume a supervisor...
In this paper, we model a novel topology for cluster-based wireless sensor networks (MforW). Numerical simulations indicate that MforW has scale-free properties. Scale-free networks are inherently robust and efficient. By using the concept of network efficiency, we investigate the effect of attacks on the network. We find that MforW provides fault tolerance and avoids the effect of cluster head failures...
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