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The present paper presents considerations on using a low power routing solution for prolonging the battery life for motes within a wireless sensor network (WSN) without affecting the network connectivity. The solution applies for the cases when, the distances between motes and base stations are over the mote's communication range, and motes located between sinks and base station are commonly used...
Aimed at the features of event-driven wireless sensor network, a representation of the entire network communication quality named as “Routing-based global network Communication Quality Representation (RCQR)” is introduced and evaluated. In our simulation and test-bed experiments, there is subtle difference between LQG constructed by RCQR and the packet reception rate of the entire network. Moreover,...
This paper investigates and undertakes simulation based study of adhoc routing protocols in wireless sensor networks. For our simulation based study we have considered three different scenarios where a adhoc routing protocol can be applied, namely a) Phenom nodes with mobility, Sensor nodes with mobility while the SINK node is stationary b) Phenom nodes with mobility, Sensor nodes are stationary and...
Since wireless sensor networks operate at remote locations under harsh conditions with no infrastructure the constraints imposed on the energy dissipation have vital impact on the overall system lifetime. There are studies on the effective utilization of the sensors' energies to increase the network lifetime. In this study we investigated strategies to increase network lifetime by considering both...
The wireless sensor network is a new kind of wireless ad hoc network and highly applications prospects. The efficient routing protocol is the focus of researching. Now we request the sensor network more and more strictly demand with the deepening research and application. However, the congestion will make decrease performance of network quickly with the increase of data load in wireless sensor network...
Wireless sensor network (WSN) is a novel technology in acquiring and processing information and has been an active research area in recent years. In this paper, firstly, a high reliability routing protocol is designed which is able to rapidly detect the change of topological and routing information of network, choose the best route, recover route when some nodes damaged. Secondly, the basic information...
When cluster heads transmit their data to the sink via multi-hop communication, the cluster heads closer to the sink not only gather the data in its cluster but also forward the data for other cluster heads. These key nodes are burdened with heavy relay traffic and tend to die early. An energy-balanced clustering routing algorithm--EBC is proposed, which adjusts the number of member in a cluster to...
As sensor networks are deployed over various terrains, the complexity of their topology continues to grow. Voids in networks often cause existing geographic routing algorithms to fail. In this paper, we propose a novel geographic routing algorithm called ldquoGreedy Forwarding with VIrtual Position (ViP)rdquo. We introduce virtual position as the middle position of all direct neighbors of a node....
In this paper, we apply belief propagation algorithm for consensus building in distributed wireless sensor networks (WSN). The objective is to achieve convergence to a global consensus value at all sensor nodes in the network. In order to implement the proposed belief propagation algorithm in a WSN, we introduce virtual fusion center nodes, which serve as sensors as well as local fusion centers in...
TinyTorrents integrates Wireless Sensor Networks with the BitTorrent Peer-to-Peer protocol and is designed to respect the resource constrained environment which characterises many WSN's. This paper describes the architecture and design which underpins the TinyTorrents system and explores many of the technical challenges that arise in the fusion of such distinct data dissemination networks. The key...
Security is currently a weak point of wireless sensor networks (WSN) impeding their proliferation although they offer flexible and low cost solutions for many every-day life applications. In WNSs, routing of data from the sensor nodes towards the destination/base station relies on the cooperation among neighbouring nodes. The realization of a trust management system which allows each node to define...
This paper presents a Jacobi iterative based computational paradigm for solving the data regression in wireless sensor networks (WSNs). The in-network computational scheme is proposed to construct a mixture regression model through the cluster-based Jacobi distributed iteration, where the intersections among mixture structure of regression model are decoupled through a new cluster-based message passing...
Many problems in sensor networks can be formulated as optimization problems. Existing distributed optimization algorithms typically rely on choosing a step size to ensure convergence. In this case, the communication between sensor nodes occurs each time the computations are carried out. Since in sensor networks, the energy required for communication can be significantly greater than the energy required...
We present an algorithm for data delivery to mobile sinks in wireless sensor networks. Our algorithm is based on information potentials, which we extend to account for mobility. We show that for local movement along edges in the communication graph, the information potentials can be adapted using a simple iterative distributed computation. However, for non-local movement, the potential field might...
As sensor networks mature, there will be an increasing need for re-usable, dynamically taskable software systems that support multiple concurrent applications. In this paper, we consider the problem of energy management in such systems, taking Tenet as a case study. Our work considers energy management under three new constraints: dynamic multi-hop routing and tasking, multiple concurrent applications,...
This paper presents SSP ( Sleep Scheduling Protocol), a centralized scheme for extending the lifetime of densely deployed wireless sensor networks by keeping only a necessary set of sensor nodes active. We present an algorithm for finding out which nodes should be put into sleep mode, and the algorithm preserves coverage and connectivity while trying to put as much nodes as possible into sleep mode...
Greedy forwarding with geographical locations in a wireless sensor network may fail at a local minimum. In this paper we propose to use conformal mapping to compute a new embedding of the sensor nodes in the plane such that greedy forwarding with the virtual coordinates guarantees delivery. In particular, we extract a planar triangulation of the sensor network with non-triangular faces as holes, by...
Top-k queries are important to many wireless sensor applications. Conventional Top-k query processing algorithms install a filter at each sensor node and suppress unnecessary sensor updates. However, they have some drawbacks that the sensor nodes consume energy extremely to probe sensor reading or update filters. Especially, it becomes worse, when the variation ratio of top-k result is higher. In...
A novel range-free localization approach, smallest enclosing Circle based Localization (SECL), has been proposed. This approach uses the center of smallest enclosing circle of neighboring anchor nodes to estimate the position of target. Comparing to centroid, SECL considers the geometrical coverage of anchors rather than the mass center of them. Consequently, SECL is robust to imperfect topology,...
A new energy-efficient wireless sensor network routing algorithm is proposed. The algorithm obtains optimization routing paths using global information of wireless sensor network. And the optimizing process can be reproduced in distribution by constructing a neural network for each node. Simulation results show the algorithm can accomplish routing process correctly and rapidly, and increase network...
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