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It has been found that almost all routing protocols can induce network congestion due to control message complexity. To overcome this overhead various optimization processes are used. One such process is gossiping, where each node forwards a message with some probability, to reduce the overhead of the routing protocols. In this paper, we show how gossiping can be used to improve the performance of...
The field of wireless sensor networks is progressing at a very rapid pace with one of its major application in the area of agriculture. Several research problems have been addressed and solutions have been proposed. Most of these works are based on single crop scenario. Research done in the multiple-cropping scenario, where two or more crops are sown in a single field in the same year, are very few...
In this paper, we concentrate on multi-target fusion and tracking problems in wireless sensor network (WSN) based on distributed clustering consensus filter. In particular, for the sake of the network lifetime and the tracking accuracy in multi-target cases, a distributed target-based clustering algorithm is proposed, which consists of the cluster member selection, the cluster head competition and...
Now a days usage of Wireless Sensor Networks (WSNs) is increasing, because of its wide application. Unlike common networks the WSNs have the capability of reconfiguration, whenever any defect occurs in the network. However, while routing in these network the loss of data is occurring due to its security lack. Hence many researchers have presented their research for providing secure routing in WSNs...
Wireless Sensor Network solve the problem of various applications like military, nuclear power plant. This type of application required continuous monitoring, hence security is required for such network. WSN is affected by many attacks, wormhole and selective forwarding attacks are of them. In selective forwarding attack, attacker may refeuse or forward certain messages and simply drop them. In wormhole...
Energy consumption, traffic adaptability, fast data collection, etc are the major issues in wireless sensor networks (WSNs). Most existing WSN protocols are able to handle one or two of the above issues with the other(s) being compromised. In order to reduce the energy consumption of wireless sensor nodes while having fast data collection under different traffic generating rates, this paper proposes...
Spontaneous progress in the field of wireless sensor networks (WSN) have led to development of various protocols for reliable communication and increasing longevity of the network. While designing the protocols for WSNs, designers come across the issues like limited energy per node, limited bandwidth for communication, security, minimum communication and computational cost. This paper focuses on energy...
In wireless sensor networks (WSNs), efficient use of the nodes' available energy is the main goal which most of the routing protocols seek to achieve. In fact, clustering based routing protocols have gained vast approval due to its merit of less energy exhaustion. The expended energy by one cluster is divided into two main terms, namely, the expended energy in intra-cluster communication (Intra-term)...
In this paper, a communication load balanced dynamic topology management algorithm (CLB-AODV) is proposed to extend the wireless sensor network (WSN) lifetime via managing the participation in communication process among all nodes in the network. The idea is that, each time there is a failure in the network topology; the topology is adjusted only on-demand by choosing the best path according to paths...
Real-time target search path planning is a ubiquitous problem present in various areas such as search and rescue, military, and security. In this paper, we consider a search for a static target and a moving target in an unknown environment full of obstacles. The knowledge of target location or direction is obtained by time sets recorded by each sensor node to specify the time instances that the target...
Topology maps represent the layout arrangement of nodes while maintaining the connectivity. As it is extracted using connectivity information only, it does not accurately represent the physical layout such as physical voids, shape, and relative distances among physical positions of sensor nodes. A novel concept Maximum Likelihood-Topology Maps for Wireless Sensor Networks is presented. As it is based...
Topologies with strong invulnerability and high reliability has become an important issue in the development of Wireless Sensor Networks (WSNs). In this paper, WSNs is modeled as a weighted network which the load of nodes is considered as the weight of nodes. Thus, the problem of balancing the load turns into the problem of balancing the weight of the network. A load-aware and energy-aware local world...
In most of the real world wireless sensor network deployments, the energy utilization is a critical factor as the nodes are battery powered. In most of the real-world deployments it is observed that the sensing subsystem consumes higher power. In order to extend the lifetime of such systems it is required to reduce the sensing energy than communication energy. We have deployed a system for monitoring...
The focus of this study is on the consensus problem in dynamic networks, where the causes of communication topology switching are node mobility and failure. Unlike a number of studies, consensus is achieved in presence of hybrid faults. As the link density among nodes in mobile networks could often be sparse, this study also: 1) enables the nodes to collect more values as they change location, 2)...
To evaluate the reliability of WSN whose topology is clustering structure, we model the WSN as a Weighted Voting System (WVS) with unreliable links, and propose an algorithm. The algorithm is based on universal generating function technique, and two composition operators are defined to composite u-functions of member nodes, links and cluster heads. Test results shows that the proposed algorithm can...
Taking into account the shortcomings of existing topology control algorithms for wireless sensor networks, a low energy uneven clustering (LEUC) topology control algorithm is proposed in this paper. The algorithm adopts three-stage election mechanism of cluster heads. First, selecting the candidate cluster heads is based on the threshold parameter. Second, the competition of temporary cluster heads...
A Hierarchical Weighted Voting System (HWVS) model is established to describe the process of data transmission on the wireless sensor network (WSN) whose topology is cluster. A new definitions about reliability of HWVS is presented. Based on universal generating function technique, an algorithm is suggested for evaluating the reliability of HWVS. The proof that suggested algorithm is applicable to...
In wireless fading channels, the path-loss exponent (PLE) is one of the most fundamental parameters to characterize the channel propagation. It has an important impact on the received signal strength (RSS)-based localization in wireless sensor networks (WSN). On the other hand, the communication range of a sensor in a WSN depends on the transmission power and on the environment (outdoor or indoor)...
For emerging high volume applications such as wireless sensor networks, energy harvesting, or consumer biometrics, bandgap voltage references in CMOS may be viewed in a more favorable light by semiconductor manufacturing due to their low cost, ruggedness, and availability of the predictable parasitic bipolar junction transistor (BJT). To generate a bandgap voltage (VBG) reference with a near zero...
One of the main issues in wireless sensor networks (WSNs) is energy conservation due to limited power of sensor node battery. To save energy, WSNs operate in duty-cycling work mode, when the sensor nodes alternate between active and dormant states. In this paper, we propose an active node set selection algorithm (ANSS), based on preference aggregation. The aim of the algorithm is to reduce the number...
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