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Wireless sensor networks possess many challenges. One of the most significant is routing. In this paper, we focus on so-called Self-organizing Coordinate Systems, which are perceived as the current state of the art. Protocols included in this class are intended to create a virtual coordinate system within the network, applying principles of geographical routing. We aim to find a solid starting point...
In this paper, we consider the the WSNs layering learning routing algorithm of random spread of the nodes. A node routing algorithm is given out by node hierarchical and learning method. When count path of routing by using this algorithm, only a little information between this point and its adjacent points is needed. By using depth-first search strategy and combining node route historical experience,...
Wireless Sensor Networks (WSNs) have been of high interest during the past couple of years. One of the most important aspects of WSN research is location estimation. As a good solution of fine grained localization Reichenbach et al. introduced the Distributed Least Squares (DLS) algorithm, which splits the costly localization process in a complex precalculation and a simple postcalculation which is...
Wireless Sensor Network (WSN) has become very important and are being used widely especially in embedded applications. Normally, these applications require numerous low cost, low power and low data nodes that communicating over multiple hop to cover a large geographical area. Introduction of 6LoWPAN makes it possible for IP address to be assigned on numerous sensor nodes and allow connectivity to...
Sensor's localization plays a very important role in wireless sensor networks, a new sensor localization approach with Ring Overlapping Based on Received Signal Strength Indicator (ROBRSSI) using three beacons is presented. Through the designing of error transforming and the collaboration between nodes, the effect of measurement error of RSSI on localization accuracy is restrained efficaciously, the...
The inherent properties of wireless sensor networks (WSN) disqualify most classic methods targeting timeliness guarantees. Assumptions of such methods as well as a restrictive notion of timeliness borrowed from classic real-time systems clash with the indeterminism of realistic scenarios. In this paper, we introduce a generalized notion of timeliness which allows to provide meaningful performance...
Data communication in wireless sensor networks (WSNs) exhibits distinctive characteristics. Routing in WSNs still relies on simple variations of traditional distance vector or link state based protocols, thus suffering low throughput and less robustness. Drawing intuitions from the Brownian motions where localized momentum exchanges enable global energy diffusion, we propose an innovative routing...
A methodology for generating optimal sensor location design for wireless sensor network (WSN) is presented. Location of sensors, cost of measurement and frequency of sampling are important factors that have been incorporated in the sensor network design formulation. The proposed methodology is based on the beacon-less location discovery scheme between the quality of state estimation and the total...
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