| 2013 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 |
2013
Timo Lindhorst,
Georg Lukas,
Edgar Nett
Wireless Mesh Network Infrastructure for Industrial Applications - A Case Study of Tele-operated Mobile Robots
18th IEEE International Conference on Emerging Technologies and Factory Automation, September 10-13, 2013 Cagliary, Italy
The deployment of wireless communication networks in industrial facilities allows for increased flexibility and seamless integration of mobile participants. Time-critical control applications are generally realized with dedicated wireless sensor networks while common WLAN infrastructure networks allow high-throughput best-effort communication. To provide high-capacity communication as well as real-time service quality, we developed and implemented a Wireless Mesh Network (WMN) infrastructure for industrial applications. An example application that requires these properties is the video-based tele-operation of a mobile robot, which we present as case study in this work. It shows the applicability of our infrastructure as well as the necessity of its comprised components.
@INPROCEEDINGS{Lindhorst13,
author = {Timo Lindhorst, Georg Lukas and Edgar Nett},
title = {Wireless Mesh Network Infrastructure for Industrial Applications
- A Case Study of Tele-operated Mobile Robots},
booktitle = {18th IEEE International Conference on Emerging Technologies \& Factory
Automation (ETFA)},
year = {2013},
file = {:Lindhorst13.pdf:PDF},
owner = {timo},
timestamp = {2013.09.18}
}
2011
Timo Lindhorst,
Georg Lukas and
Edgar Nett
Modeling Medium Utilization for Admission Control in Industrial Wireless Mesh Networks
In Proceedings of the 30th IEEE International Symposium on Reliable Distributed Systems, October 4-7, 2011. Madrid, Spain
@inproceedings{Lukas2011srds,
author = {Georg Lukas and Timo Lindhorst and Edgar Nett},
title = {Modeling Medium Utilization for Admission Control in Industrial Wireless Mesh Networks},
booktitle = {IEEE International Symposium on Reliable Distributed Systems},
publisher = {IEEE},
year = {2011}
}
Georg Lukas
Wireless-Mesh-Network-Infrastruktur mit Ende-zu-Ende-Dienstgütegarantien
In KOMMA 2011, 2. Jahreskolloquium Kommunikation in der Automation, 27.-28. September 2011, Magdeburg, Germany
Drahtlose Kommunikation spielt eine immer größere Rolle in industriellen Anwendungen. Gleichzeitig erfordern es diese Anwendungen aber, dass das Netzwerk Ende-zu-Ende-Dienstgüte garantieren und umsetzen kann. Drahtlose vermaschte Netzwerke (Wireless Mesh Networks, WMN) sind hervorragend für die Flexibilitätsanforderungen gerüstet, bieten aber keine inhärente Dienstgüte. In dieser Arbeit werden Methoden der Fehlertoleranz angewendet, um eine für industrielle Anwendungen geeignete WMN-Infrastruktur bereitzustellen. Die Infrastruktur wird vorgestellt und in Teilen evaluiert, um die Praxistauglichkeit des Ansatzes zu belegen.
@inproceedings{Lukas2011komma,
author = {Georg Lukas},
title = {{Wireless-Mesh-Network-Infrastruktur mit Ende-zu-Ende-Dienstgutegarantien}},
booktitle = {Kommunikation in der Automation},
year = {2011},
volume = {2}
}
2010
Timo Lindhorst,
Georg Lukas,
Edgar Nett, and Michael Mock
Data-mining-based Link Failure Detection for Wireless Mesh Networks
In Proceedings of the 29th IEEE International Symposium on Reliable Distributed Systems, 31 October - 4 November, 2010, New Delhi, India
Mobile robot applications operating in wireless environments require fast detection of link failures in order to enable fast repair. In previous work, we have shown that cross-layer failure detection can reduce failure detection latency significantly. In particular, we monitor the behavior of the WLAN MAC layer to predict failures on the link layer. In this paper, we investigate data mining techniques to determine which parameters, i.e., the events, or combination and timing of events, occurring on the MAC layer most probably lead to link failures. Our results show, that the parameters revealed with the data mining approach produce similar or even more accurate failure predictions than achieved so far.
@inproceedings{Lindhorst2010-srds,
author = {Timo Lindhorst and Georg Lukas and Edgar Nett and Michael Mock},
title = {Data-mining-based Link Failure Detection for Wireless Mesh Networks},
booktitle = {IEEE International Symposium on Reliable Distributed Systems},
publisher = {IEEE},
year = {2010},
month = {November}
}
Timo Lindhorst,
Georg Lukas, and
Edgar Nett
Modeling Fast Link Failure Detection for Dependable Wireless Mesh Networks
In Proceedings of the 9th IEEE International Symposium on Network Computing and Applications, 15 - 17 July, 2010, Cambridge, MA, USA
Wireless Mesh Networks (WMN) provide a flexible and inexpensive way to expand network applications to mobile entities. However, high communication reliability demands can not be met by regular WMNs due to mobility and inherent properties of wireless communication. Failing links are common events which impose a major challenge for providing a dependable communication service. By the use of suitable cross-layer models, we provide a timely detection of failed links without compromising the network stability. It is shown that the packet loss caused by a link failure can be reduced from a time-dependent value to at most four consecutive packets. For a typical control application this means an improvement by a factor of 100. In addition to an empirical evaluation we demonstrate the applicability of the mechanism by utilizing it in a real-world WMN to allow the tele-operation of a mobile robot.
@inproceedings{Lindhorst2010,
author = {Timo Lindhorst and Georg Lukas and Edgar Nett},
title = {Modeling Fast Link Failure Detection for Dependable Wireless Mesh Networks},
booktitle = {IEEE International Symposium on Network Computing and Applications},
publisher = {IEEE},
year = {2010},
month = {July},
doi = {http://doi.ieeecomputersociety.org/10.1109/NCA.2010.13}
}
2009
Georg Lukas,
André Herms,
Svilen Ivanov,
E. Nett
Dependable Wireless Mesh Networks: An integrated approach
International Journal of parallel, Emergent and Distributed Systems, April 2, 2009
Volume 24, Issue 2 April 2009, pages 151-169
Wireless Mesh Networks (WMNs) are gaining popularity in many application areas because of their low cost and high flexibility. Technically, a WMN forms a distributed network-centric system which aims to provide communication services to the application layer, but has no built-in dependability provisions. To make the network dependable, many problems have to be solved on different layers. With this paper, we describe our ongoing work to provide an integrated solution to increase the dependability of WMNs. Our approach combines network coverage planning on the physical layer, bandwidth management on the link layer and live network monitoring to improve the reliability, availability and maintainability of a WMN. We provide fine-grained means to improve the predictability of the network components, thus making the WMN more dependable. In this paper, we present first results of our work, and describe how they are interleaved.
@article{cite:Lukas2009,
author = {Georg Lukas and Andr{\'e} Herms and Svilen Ivanov and Edgar Nett},
title = {{Dependable Wireless Mesh Networks: An Integrated Approach}},
journal = {International Journal of Parallel, Emergent and Distributed Systems},
year = {2009},
month = {April},
volume = {24},
number = {2},
pages = {1--21},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2009/ijpeds\_lhin2009.pdf},
doi = {10.1080/17445760802544086}
}
Michael Schulze,
Georg Lukas
MLCCA - Multi-Level Composability Check Architecture for Dependable Communication over Heterogeneous Networks
In Proceeding of the 14th International Conference on Emerging Technologies and Factory Automation (ETFA 2009), IEEE, Mallorca, Spain, September, 22-26, 2009
During the design of complex networked systems, it is cruical to ensure the composability of the deployed applications and network protocols. Special care has to be taken to provide non-functional requirements like bandwidth and latency. Existing solutions only tackle this problem during the design phase; later refactoring or added components are not covered, potentially causing QoS violations. We propose MLCCA, a multi-level architecture which complements the design-time composability checks with additional automatic checks performed at compile-time and at run-time. The required infrastructure is embedded into our communication middleware FAMOUSO, making it transparent to application developers. The architecture has been evaluated in a tele-operated mobile robot case study. If the QoS attributes could not be fulfilled due to refactoring or changed conditions, no communication was allowed by the middleware, ensuring that the application could enter a fail-safe state. No data was sent over insufficient channels. Thus, our combination of FAMOUSO and MLCCA enables the sustainable deployment of complex networked systems.
@inproceedings{cite:Schulze2009b,
author = {Michael Schulze and Georg Lukas},
title = {{MLCCA -- Multi-Level Composability Check Architecture for Dependable Communication over Heterogeneous Networks}},
booktitle = {{14th International Conference on Emerging Technologies and Factory Automation (ETFA 2009)}},
address = {Mallorca, Spain},
year = {2009},
month = {September},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2009/mlcca_schulze_lukas_2009.pdf}
}
Georg Lukas, Christian Fackroth
WMNSec - Security for Wireless Mesh Networks
Proceedings of the 2009 - IWCMC - International Wireless Communications & Mobile Computing, Germany - Leipzig, June 21-24, 2009
Wireless Mesh Networks (WMNs) are gaining popularity as a flexible and inexpensive replacement for Ethernet-based infrastructure. However, WMN security has not been covered adequately by existing standards and implementations. We propose WMNSec, an adaptation of the IEEE 802.11i security standard, specifically targeted at Wireless Mesh Networks and accounting for limited CPU power, node mobility and interruption-free connectivity. WMNSec has been implemented on top of the MadWifi Linux driver and the hostapd suite. Experimental results from a real WMN show that even in a small eight-node network, WMNSec reduces the authentication time by up to a factor of 3 compared to 802.11i, while allowing mobile stations to move without performing additional authentications. The reduced overhead and the mobility feature confirm the practical usability of WMNSec, finally allowing to deploy WMNs in a secure way.
@inproceedings{cite:Lukas2009wmnsec,
author = {Georg Lukas and Christian Fackroth},
title = {{WMNSec -- Security for Wireless Mesh Networks}},
booktitle = {IWCMC 2009 Computer and Network Security Symposium},
year = {2009},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2009/wmnsec_lukas2009.pdf}
}
2008
Georg Lukas,
André Herms,
Svilen Ivanov,
E. Nett
An Integrated Approach for Reliability and Dependability of Wireless Mesh Networks
13th IEEE Workshop on Dependable Parallel, Distributed and Network-Centric Systems DPDNS '08, 2008
Wireless Mesh Networks (WMNs) are gaining popularity in many application areas because of their low cost and high flexibility. Technically, a WMN forms a distributed network-centric system which aims to provide communication services to the application layer, but has no built-in dependability provisions. To make the network dependable, many problems have to be solved on different layers. With this paper, we describe our ongoing work to provide an integrated solution to increase the dependability of WMNs. Our approach combines network coverage planning on the physical layer, bandwidth management on the link layer and live network monitoring to improve the reliability, availability and maintainability of a WMN. We provide fine-grained means to improve the predictability of the network components, thus making the WMN more dependable. In this paper, we present first results of our work, and describe how they are interleaved.
@inproceedings{cite:LHIN2008,
author = {Georg Lukas and Andr{\'e} Herms and Svilen Ivanov and Edgar Nett},
title = {An Integrated Approach for Reliability and Dependability of Wireless Mesh Networks},
booktitle = {13th IEEE Workshop on Dependable Parallel, Distributed and Network-Centric Systems DPDNS '08},
year = {2008},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2008/dependable_wmn_camera_ready.pdf}
}
Georg Lukas,
E. Nett,
Svilen Ivanov
Distributed Event Synconization for Diagnosing Wireless Mesh Networks
Int. Workshop on Dependable Network Computing and Mobile Systems (DNCMS 08); Naples, Italy, October 5th, 2008
in conjunction with the 27th IEEE Int. SRDS 2008
@inproceedings{cite:Lukas2008,
author = {Georg Lukas AND Edgar Nett AND Svilen Ivanov},
title = {{Distributed Event Synchronization for Diagnosing Wireless Mesh Networks}},
booktitle = {{Proceedings of the International Workshop on Dependable Network Computing and Mobile Systems, DNCMS'08}},
year = {2008},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2008/dncms08-enett.pdf}
}
Svilen Ivanov,
Georg Lukas,
Stefan Schemmer
Monitoring and Diagnosis for Wireless Real-Time Applications
10. Wirless Technologies Kongresses 2008, Bochum 22-23.09.2008,
ISBN 978-3-89838-608-1, 158-166
@inproceedings{Lukas2008,
author = {Georg Lukas and Svilen Ivanov and Stefan Schemmer},
title = {{Monitoring and Diagnosis for Wireless Real-Time Applications}},
booktitle = {10. Wirless Technologies Kongresses 2008, Bochum},
year = {2008}
}
André Herms,
Georg Lukas
Preventing Admission Failures of Bandwidth Reservation in Wireless Mesh Networks
Proceedings of Workshop on Radio Resource Management in Wireless Mesh Networks in The 6th ACS/IEEE International Conference on Computer Systenms and Applications (AICCSA'08), Qatar, April, 2008
Quality of Service for wireless mesh networks is an often requested feature for various kinds of applications. A common approach is the hop-by-hop reservation of bandwidth for individual routes. In this paper we address the problems of the reservation on a single hop. In previous works we used simulation studies to show that various existing approaches suffer from inconsistencies that lead to admission failures. In this paper, we discuss the reasons for these failures and present a protocol for preventing them. This allows to significantly increase the reliability of established communication links in WMNs.
@inproceedings{cite:Herms2008,
author = {Andr{\'e} Herms and Georg Lukas},
title = {Preventing Admission Failures of Bandwidth Reservation in Wireless Mesh Networks},
booktitle = {Proceedings of Workshop on Radio Resource Management in Wireless Mesh Networks in The 6th ACS/IEEE International Conference on Computer Systenms and Applications (AICCSA'08)},
address = {Doha, Qatar},
year = {2008},
month = {April},
pages = {1094--1099},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2008/RRMinMesh_2_Herms.pdf}
}
2007
André Herms,
Georg Lukas
A Pragmatic Approach for QoS in Wireless Mesh Networks
Proceedings of WinsSys '07, Bacelona, Spain, 2007
WINSYS 2007, ISBN:978-989-8111-14-2, pp. 57-64.
In this paper we present a QoS routing protocol for IEEE-802.11 based mesh networks.The main challenge for providing QoS in terms of bandwidth and latency is that the medium is shared between all nodes in close range, which complicates reservation of medium time. Furthermore, the use of standard compliant hardware components requires an integration of the existing medium access mechanism, which is designed for best-effort communication only. A cluster-based structure is used for representing the local domains of the shared medium and allowing reservation of medium time. On top of this reservation an optimistic reactive algorithm is used for discovery and reservation of routes that fulfil the application specified QoS requirements. Simulation results are presented that prove the correctness of this approach.
@inproceedings{cite:Herms2007a,
author = {Andr{\'e} Herms and Georg Lukas},
title = {A Pragmatic Approach for {QoS} in Wireless Multihop Networks},
booktitle = {International Conference on Wireless Information Networks and Systems -- {WinsSys} '07, Proceedings of},
address = {Barcelona, Spain},
year = {2007},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2007/qos_clusters.pdf}
}
André Herms,
Georg Lukas,
Svilen Ivanov,
Stefan Schemmer
Echtzeitfähigkeit für Mesh-Netzwerke in der Automatisierung
SPS/IPC/Drives 2007, Elektrische Automatisierung - Systeme und Komponenten, Nürnberg, 27.- 29.11.2007
ISBN:978-3-8007-3069-8
Wireless LANs (IEEE 802.11) are increasingly used in industrial applications. Theyreduce cabling costs, increase flexibility and enable mobile applications for maintenance or logistics tasks. Mesh networks provide a self-configuring and - healing wireless backbone for large scale deployments (e.g. in process automation). This paper presents a routing algorithm which provides QoS in wireless mesh networks, thus leveraging their use in industrial applications. It allows reserving bandwidth for real-time flows based on measurements of the physically available bandwidth. Thus it fully utilizes the bandwidth while still preventing congestion. Simulation results demonstrate the reliability of the algorithm and its advantage over previous works.
@inproceedings{cite:Herms2007b,
author = {Andr{\'e} Herms and Stefan Schemmer and Georg Lukas},
title = {{Echtzeitfähigkeit für Mesh-Netzwerke in der Automatisierung}},
booktitle = {Proceedings of {SPS/IPC/DRIVES, Elektrische Automatisierung, Systeme und Komponenten} '07},
address = {Nurenberg, Germany},
year = {2007},
month = {November},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2007/sps2007-schemmer_v1.pdf}
}
Svilen Ivanov,
André Herms,
Georg Lukas
Experimental Validation of the ns-2 Wireless Model using Simulation, Emulation, and Real Network
In Proceedings of the 4th Workshop on Mobile Ad-Hoc Networks (WMAN'07) in conjunction with the 15th ITG/GI - Fachtagung Kommunikation in Verteilten Systemen (KiVS'07), 26. February - 2. March 2007 in Bern, Switzerland,
VDE Verlag, ISBN 978-3-8007-2980-7, pp. 433-444.
Wireless network research in the last years is often based on simulation.Ns-2 is a widely used wireless network simulation tool for this purpose.However, there are no published results about the accuracy of the ns-2 wireless model in the literature so far. In this paper we present a validation of the wireless model of ns-2 done by comparing the network characteristics of a simulated, an emulated, and a real wireless network. In order to show only the relevant differences, we have calibrated the radio propagation model of ns-2 to the real network and have used the same routing protocol implementation and the same application data traffic in all the compared networks. The results show that the packet delivery ratios, the connectivity graphs,and the packet latencies are represented in the model with an average error of 0.3 10 and 57% respectively. Based on these results we conclude that the packet delivery ratios, and network topologies are accurately represented in ns-2, once the simulation parameters are properly adjusted. The accuracy of the packet latencies is lower and therefore statements about latencies in the real network based on the simulation results have a lower validity. Based on these results we provide recommendations for future development of the ns-2.
@inproceedings{cite:Ivanov2007,
author = {Svilen Ivanov and Andr{\'e} Herms and Georg Lukas},
title = {{Experimental Validation of the {NS-2} Wireless Model using Simulation, Emulation, and Real Network}},
booktitle = {Proceedings of the 4th Workshop on Mobile Ad-Hoc Networks (WMAN'07)},
publisher = {VDE Verlag},
year = {2007},
month = {Feb. 26. -- March 2.},
pages = {433 -- 444},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2007/wman07magdeburg.pdf}
}
Georg Lukas,
André Herms, and
Daniel Mahrenholz
Interval based Off-Line Clock Synchronization for Wireless Mesh Networks
Proceedings of the International Symposium on Computer Performance, Modeling, Measurements, and Evaluation volume 35, 2007, ACM.
Wireless mesh networks suffer from various problems like congestion or packet collisions. To identify and overcome these problems an exact global view of the communication is required. However, it is not possible to observe the whole network from a single location. Instead, a distributed monitoring is necessary, which has to include clock synchronization. We present a new interval-based algorithm for the off-line synchronization of passively monitored network events. It calculates the worst-case time interval for every event on a global clock, while considering inaccuracies caused by processing jitter and non-uniform clock drifts. The experimental evaluation on a live mesh network shows an accuracy of better than $130µs$ over a four-hop distance, which is below the minimum transmission time of data packets. Thereby, our algorithm creates a highly precise global view of the network, which allows a detailed diagnosis of wireless mesh networks.
@inproceedings{cite:Perf2007,
author = {Georg Lukas and Andr{\'e} Herms and Daniel Mahrenholz},
title = {Interval based Off-Line Clock Synchronization for Wireless Mesh Networks},
booktitle = {Proceedings of the International Symposium on Computer Performance, Modeling, Measurements, and Evaluation},
publisher = {ACM},
year = {2007},
volume = {35},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2007/2007_performance-offlinesync.pdf}
}
André Herms,
Georg Lukas,
Svilen Ivanov
Measurement-Based Detection of Interfering Neighbors for QoS in Wireless Mesh Networks
Mobile and Wireless Communications Summit, 2007. 16th IST, Budapest,Hungary 1-5 July 2007
ISBN:978-963-8111-66-1
Communication in wireless mesh networks based on the IEEE 802.11 WLAN standard is mainly governed by the carrier sensing based medium access. Knowledge about, which nodes influence each other, can improve the performance and is essential for QoS provision in terms of bandwidth guarantees. However, until now only approximations for the determination of station in carrier sense range are used. We present an exact solution by measuring the carrier sense in static wireless mesh networks. Simulation studies and measurements are done that verify the correctness of the protocol and reveal some significant properties of the carrier sense. It is shown that the carrier sense relation is neither strict nor symmetric in the general case, in opposite to the assumptions normally found in literature. We further conclude that for evaluation better simulation models are required that match these properties.
@inproceedings{cite:Herms2007,
author = {Andr{\'e} Herms and Georg Lukas and Svilen Ivanov},
title = {Measurement-Based Detection of Interfering Neighbors for {QoS} in Wireless Mesh Networks},
booktitle = {16th IST Mobile and Wireless Communications Summit 2007, Proceedings of},
year = {2007},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2007/interf-mobilesummit2007.pdf},
doi = {10.1109/ISTMWC.2007.4299081}
}
André Herms,
Georg Lukas,
Svilen Ivanov
Precise Admission Control for Bandwidth Reservation in Wireless Mesh Networks
Proceedings of 4th Intl. Conference on Mobile Ad-Hoc and Sensor Networks
MASS'07, Pisa, Italy, October, 2007
ISBN:1-4244-1455-5
Quality of service in wireless mesh networks is an often requested feature for various kinds of applications. A common approach is the establishment of routes based on hop-by-hop reservation of bandwidth. In this paper we address the problems of admission control in wireless mesh networks. We show that the existing solutions suffer from temporal inconsistencies during the distributed admission process, which lead to high admission failure rates of approximately 2% to 10% in typical topologies, even with the best approach. A solution for this problem is presented, based on the two phase commit protocol. It prevents inconsistencies and the corresponding admission failures.
@inproceedings{cite:Herms2007c,
author = {Andr{\'e} Herms and Svilen Ivanov and Georg Lukas},
title = {Precise Admission Control for Bandwidth Reservation in Wireless Mesh Networks},
booktitle = {Proceedings of 4th Intl. Conference on Mobile Ad-Hoc and Sensor Networks {MASS'07}},
address = {Pisa, Italy},
year = {2007},
month = {October}
}
2006
Spiro Trikaliotis,
Georg Lukas
Evaluating a Clock Synchronization for Dependable Sensor Networks
In Proceedings of the 20th IEEE International Parallel & Distributed Processing Symposium, DPDNS Workshop, Rhodes Island, Greece 2006
A synchronized clock is an important prerequisite for many distributed algorithms. This clock is used to give an "occured before" relationship, as well as for synchronizing distributed actions. There are many clock synchronization algorithms with varying precisions and assumptions on the underlying network topology. In this paper, a synchronization protocol is presented which achieves a high precision in the order of 20us to 30us in a one-hop wireless environment, and a multiple of this value for multi-hop wireless networks, such as sensor networks. The protocol works reliably even if message losses occur, which is very likely in wireless networks. For this, it utilizes redundancy in the sent time information. This protocol is implemented and evaluated on standard PC hardware running RT-Linux/Free, and an outline of the extension for multi-hop scenarios is given.
@inproceedings{cite:Trikaliotis2006,
author = {Spiro Trikaliotis and Georg Lukas},
title = {Evaluating a Clock Synchronization for Dependable Sensor Networks},
booktitle = {Proceedings of the 20th IEEE International Parallel and Distributed Processing Symposium},
address = {Rhodes Island, Greece},
year = {2006},
month = {May},
pages = {345}
}
André Herms,
Georg Lukas,
Svilen Ivanov
Realism in Design and Evaluation of Wireless Routing Protocols
In Proceedings of First international Workshop on Mobile Services and Personalized Environments (MSPE'06)
In this paper we consider the problem of reliable communication in wireless routing protocols. Many routing protocols for wireless networks use assumptions, that are known to be invalid in this special kind of networks. These shortcomings are not detected in the protocol evaluation, because common simulation tools are also based on these assumptions. In this paper we present a more realistic simulation model and a simple way of enabling existing protocols to handle real conditions of wireless propagation. A proof-of-concept implementation is presented and evaluated using simulation and measurements in a real and emulated network.
@inproceedings{cite:awds06,
author = {Andr{\'e} Herms and Georg Lukas and Svilen Ivanov},
title = {Realism in Design and Evaluation of Wireless Routing Protocols},
booktitle = {Proceedings of First international Workshop on Mobile Services and Personalized Environments (MSPE'06)},
address = {Aachen, Germany},
year = {2006},
month = {November},
volume = {P-102},
pages = {57--70},
url = {http://ivs.cs.uni-magdeburg.de/EuK/forschung/publikationen/pdf/2006/awds-mspe.pdf}
}
2005
Georg Lukas
Routing mit Qualitätsgarantien in mobilen Ad-Hoc-Netzen
Diplomarbeit, Universität Magdeburg, 2005.
@mastersthesis{cite:Lukas2005,
author = {Georg Lukas},
title = {{Routing mit Qualit\"atsgarantien in mobilen Ad-Hoc-Netzen}},
school = {{Universit\"at Magdeburg}},
year = {2005},
type = {Diplomarbeit},
url = {http://www-ivs.cs.uni-magdeburg.de/EuK/lehre/diplomarbeiten/glukas-diplom.pdf}
}
