Contents and abstracts
-
U. Grossmann, J. Sieck, A. Sikora.
Editorial. - p. 7-8.
-
A. Fink, H. Beikirch, M. Voss.
Improved Indoor Localization with Diversity and Filtering based
on Received Signal Strength Measurements. - p. 9-15.
-
M. Feist, B. Hebeisen, M. Prellwitz, J. Sieck.
WEB Technologies for Multimedia-Based, Mobile Museums. - p. 16-21.
-
J. Lategahn, F. Kuenemund, C. Roehrig.
Mobile Robot Localization Using WLAN, Odometry and Gyroscope Data. - p. 22-30.
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A. Sikora.
WEB2.0 Technology for an Embedded WEB-Based Gateway Platform
for Spatially Distributed Wireless Networks. - p. 31-36.
-
S. Gansemer, S. Pueschel, R. Frackowiak, S. Hakobyan, U. Grossmann.
Improved RSSI-based Euclidean Distance Positioning Algorithm for large and
dynamic WLAN Environments. - p. 37-44.
-
Z. Karakehayov.
Using Embedded Simulators for Deployment-Specific Adaptation of Sensor Networks. - p. 45-51.
-
E. Eren, K.-O. Detken.
Identity and Access Management According to the Implementation of the
SIMOIT Project and TNC@FHH. - p. 52-61.
-
E. Kuehn, J. Sieck.
Design and implementation of location and situation based services for a pervasive
mobile adventure game. - p. 62-69.
-
S. Saponara, F. Iacopetti, L. Fanucci, B. Neri.
Experimental Characterization of RFID Systems for Process Control in Industrial
Marble Machines. - p. 70-79.
-
G. Fortino, S. Galzarano, R. Giannantonio, R. Gravina, A. Guerrieri.
Spine-Based Application Development on Heterogeneous Wireless Body Sensor Networks. -p. 80-89.
EDITORIAL
“Wireless Systems”
Guest Editors: Uwe Grossmann 1), Juergen Sieck 2), Axel Sikora 3)
1) University of Applied Sciences and Arts Dortmund
Emil-Figge-Strasse. 44, 44227 Dortmund, Germany
Email:uwe.grossmann@fh-dortmund.de
URL: www.mbms.fh-dortmund.de
2) Prof. Dr. Juergen Sieck
University of Applied Sciences Berlin
Treskowallee 8, 10313 Berlin, Germany
Email:j.sieck@htw-berlin.de
URL: inka.htw-berlin.de
3) Prof. Dr. Axel Sikora
Baden-Wuerttemberg Cooperative State University Loerrach<>
Hangstrasse 46-50, 79539 Loerrach, Germany
Email: sikora@dhbw-loerrach.de
URL: http://www.dhbwloerrach.de/index.php?id=sikora
This special issue of the International Scientific
Journal of Computing includes a selection of papers
presented within the Special Stream Wireless
Systems at the Fifth IEEE International Workshop
on Intelligent Data Acquisition and Advanced
Computing Systems: Technology and Applications
(IDAACS), which was held in Rende/Cosenza, Italy,
September 21st-23rd, 2009. The workshop was
organized by the Research Institute of Intelligent
Computer Systems, Ternopil National Economic
University, Ternopil, Ukraine and co-organized by
the University of Calabria Rende/Cosenza, Italy.
The IDAACS workshop series is established as a
forum for high quality reports on state-of-the-art
theory, technology and applications of intelligent
data acquisition and advanced computer systems.
These techniques and applications have experienced
a rapid expansion in recent years that have resulted
in more intelligent, sensitive, and accurate methods
of data acquisition and data processing.
Subsequently, these advances have been applied to:
manufacturing process control and inspection;
environmental and medical monitoring and
diagnostics; and intelligent information gathering
and analyses for the purpose security and safety.
The IDAACS’09 workshop sessions were
organized under the following topic areas: Advanced
Instrumentation and Data Acquisition Systems;
Intelligent Distributed Systems and Remote Control;
Virtual Instrumentation Systems; Advanced and
High Performance Computing Systems; Cluster and
Grid Technologies, Parallel Software Tools and
Environments; Embedded Systems; Artificial
Intelligence and Neural Networks for Advanced
Data Acquisition and Computing Systems;
Advanced Mathematical Methods for Data
Acquisition and High Performance Computing;
Industrial Signal and Image Processing; Data
Analysis and Dynamic Modelling; Intelligent
Information and Retrieval Systems; Robotics and
Autonomous Systems; Information Computing
Systems for Education and Commercial
Applications; Bio-Informatics and Homeland
Security; Safety, Security and Reliability of
Software; Wireless Systems – Special Stream.
The Special Stream – Wireless Systems was
convened for the second time in 2009. The papers
selected for this special issue reflect the broad
variety of research topics in the area of wireless
systems.
The paper "Identity and Access Management
According to the Implementation of the SIMOIT
Project and TNC@FHH" of Eren and Detken
considers identity and access management
mechanisms and adds new requirements for identity
management in mobile ubiquitous environments.
The authors present the state-of-the-art in identity
management standards, for example the TNC
approach as a solution to raise the security level in
mobile networks. The modular approach allows the
integration of vendor-neutral solutions such as VPN
gateways or firewalls.
The paper "Web Technologies For Multimediabased,
Mobile Museums" of Feist et al. presents a
web-based tour documentation system, where an
interactive map of Germany displays stations visited
by a mobile museum and future visits. Station details
and further information as well as various media
representation are visualized. A barrier-free HTML
version also provides editorial and administrative
functionality.
Within the paper "Improved Indoor Localization
with Diversity and Filtering based on Received
Signal Strength Measurements" by Fink et al. a
diversity concept with redundant data transmission
in different frequency bands to reduce the dropout
probability is discussed. They also use space
diversity and plausibility filtering to reduce the
location estimation error significantly. The results
presented show that an increased accuracy of the
location estimation can be achieved with the chosen
diversity concept and plausibility filtering. The
localization is more robust against signal fading and
frequency specific interference.
The paper "SPINE-Based Application
Development on Heterogeneous Wireless Body
Sensor Networks" by Fortino et al. presents a
framework that allows the programming of signal
processing applications on various base
architectures, e.g. EmberZNet, Z-Stack and TinyOSnodes,
and its integration under one single Spine
controller.
In the paper, "Improved RSSI-based Euclidean
Distance Positioning Algorithm for large and
dynamic WLAN Environments" from Gansemer et
al. an improvement to the indoor localization system
is presented that has been developed at the
University of Applied Sciences and Arts Dortmund
recently. With this improvement, the accuracy of
this inherently imprecise RSSI-based measurement
approach could be optimized, so that the median
Location estimation error (LEE) can be reduced to
the region of 2 m.
Karakehayov presents in his paper “Using
Embedded Simulators For Deployment-Specific
Adaptation of Sensor Networks” an embedded
simulation platform, which allows complex multihop
networks to be modelled and emulated. Their
behaviour is analysed with respect to computational
time and energy consumption.
The paper "Design and implementation of
location and situation based services for a pervasive
mobile adventure game" of Kuehn et al. presents
the design and implementation of a location and
situation based pervasive mobile adventure game
called Sportix. The prototype supports different
types of sensor data – including 3D acceleration and
XPS – to determine the current position and activity
of the player. Data and quests are retrieved from a
central information system and visualized on the
mobile device.
Through the paper "Mobile Robot Localization
Using WLAN, Odometry and Gyroscope Data" of
Kuenemund et al., a method for the estimation of
positions and motions of mobile robots in an indoor
environment is introduced. The authors use WLAN
signal strength to estimate the global position of a
mobile robot in a building. The paper presents a
multi sensor fusion using a Kalman filter, which
enhances the accuracy of fingerprinting algorithms
and tracking of the robots.
The paper "Experimental Characterization Of
RFID Systems For Process Control In Industrial
Marble Machines" of Saponara et al. presents an
experimental characterisation of different RFID
technologies. The application presented allows the
automatic detection of the presence of a marble slab
in different points of a marble machine.
The paper "WEB2.0 Technology For An
Embedded WEB-based Gateway Platform For
Spatially Distributed Wireless Networks" of Sikora
presents a communication platform for monitoring
and deployment of distributed wireless networks
using distributed embedded web servers connected
to RF-communication heads. Data exchange is
provided via XML-feeds between web servers acting
as distributed communication hubs with web2.0-
capable clients.
This selection of papers presents topics of
IDAACS'09. We hope the readers find them
interesting, useful and even enjoyable.
Top
IMPROVED INDOOR LOCALIZATION WITH DIVERSITY AND FILTERING
BASED ON RECEIVED SIGNAL STRENGTH MEASUREMENTS
Andreas Fink, Helmut Beikirch, Matthias Voss
University of Rostock, Department of Computer Science and Electrical Engineering
A.-Einstein-Str. 2, D-18059 Rostock, Germany
{andreas.fink;helmut.beikirch;matthias.voss2}@uni-rostock.de
www.e-technik1.uni-rostock.de
Distance estimation by the evaluation of RSSI measurements is a simple and well-known technique to predict
the position of an unknown node. Therefore the infrastructure does not have to be extended by expensive hardware for
synchronization or direction approximation. However, with the localization based on RSSI measurements common and
proven systems can be used for the infrastructure. For indoor environments the distance-pending path loss is affected
by strong variations, especially appearing as frequency specific signal dropouts. A diversity concept with redundant
data transmission in different frequency bands can reduce the dropout probability. If also space diversity and
plausibility filtering are used, the Location Estimation Error can be reduced significantly. The investigations show that
a good performance for precision and availability can also be reached with low infrastructural costs.
Top
WEB TECHNOLOGIES FOR MULTIMEDIA-BASED, MOBILE MUSEUMS
Manuela Feist 1), Benedikt Hebeisen 2), Matthias Prellwitz 3), Juergen Sieck 4)
HTW Berlin (University of Applied Sciences),
Treskowallee 8, 10318 Berlin, Germany,
1) manuela.feist@htw-berlin.de, 2) b.hebeisen@htw-berlin.de, 3) matthias.prellwitz@htw-berlin.de,
4) j.sieck@htw-berlin.de, http://inka.htw-berlin.de/
The paper presents a web-based tour documentation. An interactive map of Germany displays stations
already being visited by a mobile museum and those being planned. Station details offering further information as well
as various media representation. A barrier-free HTML version also provides editorial and administrative functionality.
Top
MOBILE ROBOT LOCALIZATION USING WLAN,
ODOMETRY AND GYROSCOPE DATA
Julian Lategahn, Frank Kuenemund, Christof Roehrig
University of Applied Sciences
Dortmund, Emil-Figge-Str. 42,
44227 Dortmund, Germany
roehrig@ieee.org
In this paper a method for estimation of position and motion of a mobile robot in an indoor environment is
introduced. The proposed method uses WLAN signal strength to estimate the global position of a mobile robot in an
office building. Thus signal strengths of the received access points are stored in the radio map in calibration phase. In
localization phase the stored values are compared with actually measured one’s. Therefore a fingerprinting algorithm,
that was introduced before, is used. The improvement of the presented work is the multi sensor fusion using Kalman
filter, which enhances the accuracy of fingerprinting algorithms and tracking of the robot. For this reason odometric
and gyroscopic sensors of the robot are fused with the estimated position of the fingerprinting algorithm. The paper
presents the experimental results of measurements made in an office building.
Top
WEB2.0 TECHNOLOGY FOR AN EMBEDDED WEB-BASED GATEWAY
PLATFORM FOR SPATIALLY DISTRIBUTED WIRELESS NETWORKS
Axel Sikora
Baden-Württemberg Cooperative State University Lörrach,
Hangstraβe 46-50.
79539 Lörrach, Germany
sikora@dhbw-loerrach.de,
http://www.dhbw-loerrach.de
A novel communication platform is presented, which helps in the monitoring and deployment of distributed
wireless networks. Its major part is based on distributed embedded web servers connected to RF-communication heads.
The web servers act as distributed communication hubs and exchange data via XML-feeds with web2.0-capable clients.
The first implementations are concentrating on the monitoring direction, as this approach eases supervision of spatially
distributed wireless networks, and also allows seamless remote monitoring. But it is also capable to feed data frames
into the wireless network.
The platform already supports protocols like Wireless M-Bus and EnOcean Radio Protocol (ERP), but is flexible to
integrate arbitrary protocols. In addition, this is - to the very best knowledge of the authors - the very first AJAX
implementation on a very lean embedded web server.
Top
IMPROVED RSSI-BASED EUCLIDEAN DISTANCE POSITIONING
ALGORITHM FOR LARGE AND DYNAMIC WLAN ENVIRONMENTS
S. Gansemer 1), S. Pueschel 2), R. Frackowiak 3), S. Hakobyan 4), U. Grossmann 5)
University of Applied Sciences and Arts Dortmund,
Emil-Figge-Str. 44, 44227 Dortmund,
http://mbms.fh-dortmund.de
1) sebastian.gansemer@fh-dortmund.de, 2) steffen.pueschel@fh-dortmund.de, 3) robert@frackowiak.de
4) syuzanna.hakobyan@fh-dortmund.de, 5) uwe.grossmann@fh-dortmund.de
This paper presents an algorithm for RSSI fingerprint positioning based on Euclidean distance for the use in
a priori existing larger and dynamically changing WLAN infrastructure environments. Symptomatical for such
environments are changing sets of base stations for different calibration points and for calibration phase and
positioning phase. The presented algorithm has an accuracy of 2.06m median location estimation error. The algorithm
uses four threshold parameters to adapt the calculation to the specific measuring environment.
Furthermore the reduction of calibration effort is investigated. It is shown that an enlargement of the calibration
grid size from 1m to 6m increases the median location estimation error from 2.06m to 3.5m. Regular calibration
measurements include measurements in four rectangular bearings. Reducing the number of calibration bearings results
in less calibration effort, but worsens estimation quality.
Top
USING EMBEDDED SIMULATORS FOR
DEPLOYMENT-SPECIFIC ADAPTATION OF SENSOR NETWORKS
Zdravko Karakehayov
Technical University of Sofia,
Kliment Ohridski 8, Sofia-1000, Bulgaria,
e-mail: zgk@tu-sofia.bg, www.tu-sofia.bg
This paper introduces a method for deployment-specific adaptation of wireless ad hoc networks. The method
utilizes sophisticated nodes which model the network signature for actual deployments and routing paths. Since the
transmit power is fixed, many nodes may not save energy from communication. At the same time, all nodes save energy
from calculations and the number of beacon periods may be controlled. The nodes with embedded simulators control
the balance between lifetime and real-time performance. Also, some routes are modified to decline the communication
range and save energy. An example shows a significant energy reduction and improved real-time performance.
Top
IDENTITY AND ACCESS MANAGEMENT ACCORDING TO THE
IMPLEMENTATION OF THE SIMOIT PROJECT AND TNC@FHH
Evren Eren 1), Kai-Oliver Detken 2)
1) FH Dortmund, Emil-Figge-Straβe 42, D-44227 Dortmund,
eren@fh-dortmund.de, http://www.fh-dortmund.de
2) DECOIT GmbH, Fahrenheitstraβe 9, D-28359 Bremen,
detken@decoit.de, http://www.decoit.de
This paper considers some of the identity and access management mechanisms, and adds to this the new
requirements posed by identity management in mobile ubiquitous environments. The authors present the state-of-the-art
in identity management standards and initiatives in the context of the SIMOIT project and the TNC@FHH
implementation. Furthermore, the paper discusses the results achieved by these projects with respect to the generic
requirements in different scenarios and compares the achievements.
Top
DESIGN AND IMPLEMENTATION OF LOCATION AND SITUATION
BASED SERVICES FOR A PERVASIVE MOBILE ADVENTURE GAME
Eileen Kuehn, Juergen Sieck
University of Applied Sciences Berlin,
Treskowallee 8, 10318 Berlin, Germany,
Eileen.Kuehn@HTW-Berlin.de / J.Sieck@HTW-Berlin.de, http://inka.htw-berlin.de
This paper describes the design and implementation of a location and situation based pervasive mobile
adventure game named Sportix. The prototype uses different types of sensor data – including 3D acceleration data and
XPS – to determine the current position and activity of the player. Depending on the firm classification, data and quests
are retrieved accordingly from a central information system and visualised for the player on the mobile device. By
solving quests and performing sports the player is able to participate in the game.
Top
EXPERIMENTAL CHARACTERIZATION OF RFID SYSTEMS FOR
PROCESS CONTROL IN INDUSTRIAL MARBLE MACHINES
Sergio Saponara, Fabrizio Iacopetti, Luca Fanucci, Bruno Neri
Department of Information Engineering, University of Pisa, Via Caruso, 16, I-56122, ITALY,
{sergio.saponara, fabrizio.iacopetti, luca.fanucci, b.neri}@iet.unipi.it, www.iet.unipi.it
The paper presents an experimental characterization of wireless systems, specifically RFID technologies,
applied to polishing/cutting process control in the marble industry. The application of RFID systems has the final aim
of allowing the automatic and contact-less detection of the presence of a marble slab in different points of a marble
machine, outside and/or inside, trying to overcome some limitations of the currently used proximity detectors. Slab
detection is needed for the process control in order to properly activate the abrasive or cutting heads of the machine.
Four RFID systems at 125 kHz, 13.56 MHz, 868 MHz and 2.45 GHz have been tested in different set-ups representative
of those found in marble machines. Starting from commercially available tags, readers and antennas, ad-hoc developed
or customized hardware and/or software have been used for the experimental test campaign, that has been carried out
also considering dirty and wet working environments representative of those found in real applications.
Top
SPINE-BASED APPLICATION DEVELOPMENT ON HETEROGENEOUS
WIRELESS BODY SENSOR NETWORKS
Giancarlo Fortino 1), Stefano Galzarano 1), Roberta Giannantonio 2),
Raffaele Gravina 1, 3), Antonio Guerrieri 1)
1) Dept. of Electronics, Informatics, and Systems (DEIS), University of Calabria, Rende (CS), Italy,
e-mail: g.fortino@unical.it, galzarano@si.deis.unical.it, aguerrieri@deis.unical.it
2) TILAB, Telecom Italia, Torino, Italy, e-mail: roberta.giannantonio@telecomitalia.it
3) WSN Lab Telecom Italia, Berkeley, CA 94704,
e-mail: rgravina@deis.unical.it
Wireless sensor networks (WSNs) are a novel technology enabling new classes of applications and systems
for ubiquitous and pervasive computing. In particular, WSNs for the human body, also known as Wireless Body Sensor
Networks (WBSNs), will enable not only continuous, multi-purpose monitoring of people but also will support social
interaction among people coming into physical contact. In these contexts, applications demand a wide range of
functionalities, in terms of sensor types, processing performance, communication capabilities. Moreover the
development of such applications has to deal with the issue of handling heterogeneous WBSNs since different kinds of
sensor node architectures could be necessary to fulfill all the application requirements. This paper proposes an
approach based on the SPINE frameworks (SPINE1.x and SPINE2) for the programming of signal processing
applications on heterogeneous wireless sensor platforms. In particular, two integrable approaches based on the
proposed frameworks are described that allow the development of applications for WBSNs constituted by
heterogeneous sensor nodes. The approaches are exemplified through a human activity recognition system based on a
WBSN composed of two types of sensor nodes, heterogeneous with respect to base software and hardware.
Top
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