Effects of population size for location-aware node placement in WMNs: evaluation by a genetic algorithm--based approach

Wireless mesh networks (WMNs) are cost-efficient networks that have the potential to serve as an infrastructure for advanced location-based services. Location service is a desired feature for WMNs to support location-oriented applications. WMNs are also interesting infrastructures for supporting ubiquitous multimedia Internet access for mobile or fixed mesh clients. In order to efficiently support such services and offering QoS, the optimized placement of mesh router nodes is very important. Indeed, such optimized mesh placement can support location service managed in the mesh and keep the rate of location updates low...Peer ReviewedPostprint (author's final draft

7. GI/ITG KuVS Fachgespräch Drahtlose Sensornetze

In dem vorliegenden Tagungsband sind die Beiträge des Fachgesprächs Drahtlose Sensornetze 2008 zusammengefasst. Ziel dieses Fachgesprächs ist es, Wissenschaftlerinnen und Wissenschaftler aus diesem Gebiet die Möglichkeit zu einem informellen Austausch zu geben – wobei immer auch Teilnehmer aus der Industrieforschung willkommen sind, die auch in diesem Jahr wieder teilnehmen.Das Fachgespräch ist eine betont informelle Veranstaltung der GI/ITG-Fachgruppe „Kommunikation und Verteilte Systeme“ (www.kuvs.de). Es ist ausdrücklich keine weitere Konferenz mit ihrem großen Overhead und der Anforderung, fertige und möglichst „wasserdichte“ Ergebnisse zu präsentieren, sondern es dient auch ganz explizit dazu, mit Neueinsteigern auf der Suche nach ihrem Thema zu diskutieren und herauszufinden, wo die Herausforderungen an die zukünftige Forschung überhaupt liegen.Das Fachgespräch Drahtlose Sensornetze 2008 findet in Berlin statt, in den Räumen der Freien Universität Berlin, aber in Kooperation mit der ScatterWeb GmbH. Auch dies ein Novum, es zeigt, dass das Fachgespräch doch deutlich mehr als nur ein nettes Beisammensein unter einem Motto ist.Für die Organisation des Rahmens und der Abendveranstaltung gebührt Dank den beiden Mitgliedern im Organisationskomitee, Kirsten Terfloth und Georg Wittenburg, aber auch Stefanie Bahe, welche die redaktionelle Betreuung des Tagungsbands übernommen hat, vielen anderen Mitgliedern der AG Technische Informatik der FU Berlin und natürlich auch ihrem Leiter, Prof. Jochen Schiller

Practical issues of implementing a hybrid multi-NIC wireless mesh-network

Testbeds are a powerful tool to study wireless mesh and sensor networks as close as possible to real world application scenarios. In contrast to simulation or analytical approaches these installations face various kinds of environment parameters. Challenges related to the shared physical medium, operating system, and used hardware components do arise. In this technical report about the work-in-progress Distributed Embedded Systems testbed of 100 routers deployed at the Freie Universität Berlin we focis on the software architecture and give and introduction to the network protocol stack of the Linux kernel. Furthermore, we discuss our first experiences with a pilot network setup, the encountered problems and the achieved solutions. This writing continues our first publication and builds upon the discussed overall testbed architecture, our experiment methodology, and aspired research objectives

Method and system for spatial data input, manipulation and distribution via an adaptive wireless transceiver

A method and system for spatial data manipulation input and distribution via an adaptive wireless transceiver. The method and system include a wireless transceiver for automatically and adaptively controlling wireless transmissions using a Waveform-DNA method. The wireless transceiver can operate simultaneously over both the short and long distances. The wireless transceiver is automatically adaptive and wireless devices can send and receive wireless digital and analog data from various sources rapidly in real-time via available networks and network services

Improving Performance of WSN Based On Hybrid Range Based Approach

Improving the performance of WSN supported hybrid range based approach. WSN is self-possessed minimization error of nodes prepared with limited resources, limited memory and computational abilities. WSNs reliably work in unidentified hubs and numerous situations, it's difficult to trade sensor hubs after deployment, and therefore a fundamental objective is to optimize the sensor nodes' lifetime. A WSN may be a set of a large number of resource-constrained sensor nodes which have abilities for information detection, processing, and short-range radio communication, Analysis localization error minimization based several applications of wireless sensor networks (WSN) need data regarding the geographical location of each detector node. Self-organization and localization capabilities are one in every of the foremost necessary needs in detector networks. It provides a summary of centralized distance-based algorithms for estimating the positions of nodes during very sensing nodes. Secure localization of unknown nodes during a very wireless detector network (WSN) may be a vital analysis subject wireless sensor networks (WSN), a component of enveloping computing, are presently getting used on a large scale to look at period environmental standing, Be that as it may, these sensors work underneath extraordinary vitality imperatives and are planned by remembering an application. Proposed approaches are sensing node location and challenging task, involve assessing sort of various parameters needed by the target application. In study realize drawback not sense positioning of nodes .but proposed approach formula recognizes the optimal location of nodes supported minimize error and best answer in WSN. Localization algorithms mentioned with their benefits and disadvantages. Lastly, a comparative study of localization algorithms supported the performance in WSN. This was often done primarily to offer a summary of the proposed approach known today for reliable data and minimizing the energy consumption in wireless sensor networks