Publications
121.
Festag, A.
Wifi für Autos Journal Article
In: Funkschau, no. 13, pp. 45-46, 2005.
Links | BibTeX | Tags: V2X communication
@article{Festag:Funkschau:2005,
title = {Wifi für Autos},
author = {A. Festag},
url = {https://festag-net.de/wp-content/uploads/2005_Festag_Funkschau.pdf},
year = {2005},
date = {2005-07-01},
urldate = {2005-07-01},
journal = {Funkschau},
number = {13},
pages = {45-46},
keywords = {V2X communication},
pubstate = {published},
tppubtype = {article}
}
122.
Füßler, H.; Möske, M.; Hartenstein, H.; Franz, W.; Festag, A.; Wagner, C.
A Position-Based Router: Design, Implementation and Measurements Book Section
In: Franz, W.; Hartenstein, H.; Mauve, M. (Ed.): Inter-Vehicle Communication Based on Ad Hoc Networking Principles, The FleetNet Project, pp. 145-173, Universitätsverlag Karlsruhe, Karlsruhe, 2005, ISBN: 3-937300-88-0.
Links | BibTeX | Tags: V2X communication
@incollection{Fuessler:FleetNet:2005,
title = {A Position-Based Router: Design, Implementation and Measurements},
author = {H. Füßler and M. Möske and H. Hartenstein and W. Franz and A. Festag and C. Wagner},
editor = {W. Franz and H. Hartenstein and M. Mauve},
url = {https://d-nb.info/978097661/34},
isbn = {3-937300-88-0},
year = {2005},
date = {2005-06-01},
urldate = {2005-06-01},
booktitle = {Inter-Vehicle Communication Based on Ad Hoc Networking Principles, The FleetNet Project},
pages = {145-173},
publisher = {Universitätsverlag Karlsruhe},
address = {Karlsruhe},
keywords = {V2X communication},
pubstate = {published},
tppubtype = {incollection}
}
123.
Füßler, H.; Torrent-Moreno, M.; Transier, M.; Festag, A.; Hartenstein, H.
Thoughts on a Protocol Architecture for Vehicular Ad-hoc Networks Proceedings Article
In: International Workshop on Intelligent Transportation (WIT), Hamburg, Germany, 2005.
Abstract | Links | BibTeX | Tags: V2X communication
@inproceedings{Fuessler:WIT:2005,
title = {Thoughts on a Protocol Architecture for Vehicular Ad-hoc Networks},
author = {H. Füßler and M. Torrent-Moreno and M. Transier and A. Festag and H. Hartenstein},
url = {https://festag-net.de/wp-content/uploads/2005_Fuessler_WIT.pdf},
year = {2005},
date = {2005-03-01},
urldate = {2005-03-01},
booktitle = {International Workshop on Intelligent Transportation (WIT)},
address = {Hamburg, Germany},
abstract = {In comparison to other communication networks, Vehicular Ad-hoc Networks (VANETs) have unique requirements with respect to applications, types of communication, self-organization and other issues. In order to meet these requirements, the structuring of functionalities into protocols and their interaction must be re-thought. The traditional approach of decomposition of functionality into protocol layers (layered approach) and a protocol design specifically tailored to the needs of VANETs (un-layered approach) leads to two extreme and opposed manifestations of a potential VANET protocol architecture. From these two extreme approaches we derive a stack-based VANET protocol architecture that combines the strengths of both. Among the key features of this protocol architecture are VANET-specific protocol layers, a staircase approach for interaction among layers, and the use of an information connector for the exchange of cross-layer information using the publisher/subscriber pattern. This protocol architecture provides a clear modular structure with flexibility for protocol interaction and information exchange at a reasonable complexity.},
keywords = {V2X communication},
pubstate = {published},
tppubtype = {inproceedings}
}
In comparison to other communication networks, Vehicular Ad-hoc Networks (VANETs) have unique requirements with respect to applications, types of communication, self-organization and other issues. In order to meet these requirements, the structuring of functionalities into protocols and their interaction must be re-thought. The traditional approach of decomposition of functionality into protocol layers (layered approach) and a protocol design specifically tailored to the needs of VANETs (un-layered approach) leads to two extreme and opposed manifestations of a potential VANET protocol architecture. From these two extreme approaches we derive a stack-based VANET protocol architecture that combines the strengths of both. Among the key features of this protocol architecture are VANET-specific protocol layers, a staircase approach for interaction among layers, and the use of an information connector for the exchange of cross-layer information using the publisher/subscriber pattern. This protocol architecture provides a clear modular structure with flexibility for protocol interaction and information exchange at a reasonable complexity.
124.
Festag, A.; Wolisz, A.
IP-Mobility for Cellular and Wireless Networks Book Section
In: Zurawski, R. (Ed.): The Industrial Information Technology Handbook, pp. 13, CRC Press, 2004, ISBN: 0849319854.
Links | BibTeX | Tags: mobile communication
@incollection{Festag:CRCHandbook:2014,
title = {IP-Mobility for Cellular and Wireless Networks},
author = {A. Festag and A. Wolisz},
editor = {R. Zurawski},
url = {https://www.taylorfrancis.com/chapters/mono/10.1201/9781315220758-14/section-2-internet-ip-networks-richard-zurawski},
isbn = {0849319854},
year = {2004},
date = {2004-11-29},
urldate = {2004-11-29},
booktitle = {The Industrial Information Technology Handbook},
pages = {13},
publisher = {CRC Press},
organization = {Taylor & Francis},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {incollection}
}
125.
Festag, A.; Füßler, H.; Hartenstein, H.; Sarma, A.; Schmitz, R.
FleetNet: Bringing Car-to-Car Communication into the Real World Proceedings Article
In: ITS World Congress and Exhibition, Nagoya, Japan, 2004.
Abstract | Links | BibTeX | Tags: V2X communication
@inproceedings{Festag:ITSWC:2004,
title = {FleetNet: Bringing Car-to-Car Communication into the Real World},
author = {A. Festag and H. Füßler and H. Hartenstein and A. Sarma and R. Schmitz},
url = {https://festag-net.de/wp-content/uploads/2004_Festag_ITSWC.pdf},
year = {2004},
date = {2004-10-18},
urldate = {2004-10-18},
booktitle = {ITS World Congress and Exhibition},
address = {Nagoya, Japan},
abstract = {Car-to-car communication by means of wireless technology shows a strong potential to enhance both safety and comfort of road users. The necessity to reach cars beyond the transmission range of the own radio creates the challenge to find algorithms to efficiently forward packets. In these so-called vehicular ad hoc networks, position information has been identified as a crucial component that alleviates some of the limitations of existing topology-based protocols. Thus, we see the use of positional information at the core of a car-to-car communication system that provides advanced applications for active safety, distributed floating car data, as well as user communication and information. A major thrust to leverage a car-to-car communication platform was provided by the FleetNet project, partly funded by the German Ministry of Education and Research BMBF and led by Daimler Chrysler AG. Based on ad-hoc networking principles and the availability of position information, the project developed suitable communication concepts. In addition to simulation studies, a prototype communication and application system was implemented and deployed, embedding safety and convenience applications. With car-based real world field trials successfully conducted, first results and experiences look promising.},
keywords = {V2X communication},
pubstate = {published},
tppubtype = {inproceedings}
}
Car-to-car communication by means of wireless technology shows a strong potential to enhance both safety and comfort of road users. The necessity to reach cars beyond the transmission range of the own radio creates the challenge to find algorithms to efficiently forward packets. In these so-called vehicular ad hoc networks, position information has been identified as a crucial component that alleviates some of the limitations of existing topology-based protocols. Thus, we see the use of positional information at the core of a car-to-car communication system that provides advanced applications for active safety, distributed floating car data, as well as user communication and information. A major thrust to leverage a car-to-car communication platform was provided by the FleetNet project, partly funded by the German Ministry of Education and Research BMBF and led by Daimler Chrysler AG. Based on ad-hoc networking principles and the availability of position information, the project developed suitable communication concepts. In addition to simulation studies, a prototype communication and application system was implemented and deployed, embedding safety and convenience applications. With car-based real world field trials successfully conducted, first results and experiences look promising.
126.
Festag, A.; Girao, J.; Melia, T.; Westhoff, D.
On the Limitations of Security Concepts for Mobile Adhoc Networks Routing Protocols Proceedings Article
In: vonKnop, J.; Haverkamp, W.; Jessen, E. (Ed.): DFN-Arbeitstagung über Kommunikationsnetze, pp. 61-76, Gesellschaft für Informatik e.V., Düsseldorf, Germany, 2004.
Abstract | Links | BibTeX | Tags: security, V2X communication
@inproceedings{Festag:DFNArbeitstagung:2004,
title = {On the Limitations of Security Concepts for Mobile Adhoc Networks Routing Protocols},
author = {A. Festag and J. Girao and T. Melia and D. Westhoff},
editor = {J. vonKnop and W. Haverkamp and E. Jessen},
url = {https://festag-net.de/wp-content/uploads/2004_Festag_DFNArbeitstagung.pdf},
year = {2004},
date = {2004-06-01},
urldate = {2004-06-01},
booktitle = {DFN-Arbeitstagung über Kommunikationsnetze},
pages = {61-76},
publisher = {Gesellschaft für Informatik e.V.},
address = {Düsseldorf, Germany},
abstract = {Recently, a number of approaches proposing various security aspects for routing protocols in mobile ad hoc networks have been proposed. In this work we do not introduce another proposal aiming at security in the context of ad hoc networks. Instead, we argue from a generalized view and answer the question: what security objectives are in principle achievable and what security features are not achievable at all, even when using unacceptable heavy weighted security features. Our contribution in this work is to derive from the available security mechanisms and from a reasonable ad hoc network specific attacker model a set of theoretically achievable security objectives. In particular we will also denote the majority of non practically achievable security objectives.},
keywords = {security, V2X communication},
pubstate = {published},
tppubtype = {inproceedings}
}
Recently, a number of approaches proposing various security aspects for routing protocols in mobile ad hoc networks have been proposed. In this work we do not introduce another proposal aiming at security in the context of ad hoc networks. Instead, we argue from a generalized view and answer the question: what security objectives are in principle achievable and what security features are not achievable at all, even when using unacceptable heavy weighted security features. Our contribution in this work is to derive from the available security mechanisms and from a reasonable ad hoc network specific attacker model a set of theoretically achievable security objectives. In particular we will also denote the majority of non practically achievable security objectives.
127.
Festag, A.
Mobility Support in IP Cellular Networks – A Multicast-Based Approach PhD Thesis
Technical University of Berlin, School of Electrical Engineering and Computer Sciences, 2003, (Doctoral Dissertation).
Abstract | Links | BibTeX | Tags: mobile communication, multicast
@phdthesis{Festag:PhD:2003,
title = {Mobility Support in IP Cellular Networks – A Multicast-Based Approach},
author = {A. Festag},
url = {https://d-nb.info/968081320/34},
doi = {10.14279/depositonce-784},
year = {2003},
date = {2003-07-08},
urldate = {2003-07-08},
address = {Berlin, Germany},
school = {Technical University of Berlin, School of Electrical Engineering and Computer Sciences},
abstract = {Today's cellular communication networks offer seamless mobility support but are based on a homogeneous networking technology and a complex voice-oriented networking infrastructure. The Internet technology is expected to cause a paradigm shift in cellular communication networks. Mobile IP is the classical solution to support host mobility, but faces a number of disadvantages, including triangular routing and its effect on protocol overhead and end-to-end delays, router ingress filtering, and handover performance. In the dissertation a different approach is pursued that solves the general mobility problem by means of group communication (multicast). In principle, it utilizes the capability of multicast for location-independent addressing and routing, but poses a number of challenges, including the fact that not all mobility functions are offered by the multicast, as well as the open problems of the multicast as it exists in today fixed networks, and problems that arise through the usage of multicast for mobility support, such as the scalability with the number of multicast groups. A few proposals in this area have already been made with different motivations, requirements, and assumptions about the networking architecture. In this dissertation the requirements for multicast-based support of host mobility are identified, as well as mobility functions and basic protocol options elaborated. The three components create a framework for the system and protocol design of multicast-based mobility support that is termed MOMBASA (Mobility Support – A Multicast-Based Approach). The framework is used to judge existing research approaches and serves as a basis to design new schemes and modify existing ones. Four case studies are derived from the framework based on the Any-Source Multicast, the current multicast standard in the Internet, as well as alternative service models. For these case studies a set of protocols are designed that augments the multicast schemes by mobility functions. The methodology of investigation is a combined approach of measurements, simulation, and analysis. For experimental investigation the MOMBASA Software Environment is developed – a generic software platform for experimentation with multicast-based mobility support in IP-based networks. The software environment offers an abstract interface to the multicast, and hence can be used for future investigations of different classes and types of multicast. The MOMBASA Software Environment is part of the evaluation environment that allows to investigate the selected case studies in a common experimental environment under comparable conditions. The results of the dissertation show the feasibility of a mobile communication system with multicast-based mobility support providing the full spectrum of IP services. Potential problems of multicast-based mobility support (e.g. lack of a reliable transport service for multicast, and others) can be avoided. The dissertation presents results of the performance evaluation for handover. Scalability issues are addressed, in particular the signaling costs in a system with multicast-based mobility support determined. All results are compared with the reference case Mobile IP and its hierarchical variant.},
note = {Doctoral Dissertation},
keywords = {mobile communication, multicast},
pubstate = {published},
tppubtype = {phdthesis}
}
Today's cellular communication networks offer seamless mobility support but are based on a homogeneous networking technology and a complex voice-oriented networking infrastructure. The Internet technology is expected to cause a paradigm shift in cellular communication networks. Mobile IP is the classical solution to support host mobility, but faces a number of disadvantages, including triangular routing and its effect on protocol overhead and end-to-end delays, router ingress filtering, and handover performance. In the dissertation a different approach is pursued that solves the general mobility problem by means of group communication (multicast). In principle, it utilizes the capability of multicast for location-independent addressing and routing, but poses a number of challenges, including the fact that not all mobility functions are offered by the multicast, as well as the open problems of the multicast as it exists in today fixed networks, and problems that arise through the usage of multicast for mobility support, such as the scalability with the number of multicast groups. A few proposals in this area have already been made with different motivations, requirements, and assumptions about the networking architecture. In this dissertation the requirements for multicast-based support of host mobility are identified, as well as mobility functions and basic protocol options elaborated. The three components create a framework for the system and protocol design of multicast-based mobility support that is termed MOMBASA (Mobility Support – A Multicast-Based Approach). The framework is used to judge existing research approaches and serves as a basis to design new schemes and modify existing ones. Four case studies are derived from the framework based on the Any-Source Multicast, the current multicast standard in the Internet, as well as alternative service models. For these case studies a set of protocols are designed that augments the multicast schemes by mobility functions. The methodology of investigation is a combined approach of measurements, simulation, and analysis. For experimental investigation the MOMBASA Software Environment is developed – a generic software platform for experimentation with multicast-based mobility support in IP-based networks. The software environment offers an abstract interface to the multicast, and hence can be used for future investigations of different classes and types of multicast. The MOMBASA Software Environment is part of the evaluation environment that allows to investigate the selected case studies in a common experimental environment under comparable conditions. The results of the dissertation show the feasibility of a mobile communication system with multicast-based mobility support providing the full spectrum of IP services. Potential problems of multicast-based mobility support (e.g. lack of a reliable transport service for multicast, and others) can be avoided. The dissertation presents results of the performance evaluation for handover. Scalability issues are addressed, in particular the signaling costs in a system with multicast-based mobility support determined. All results are compared with the reference case Mobile IP and its hierarchical variant.
128.
Fu, X.; Chen, T.; Festag, A.; Karl, H.; Schäfer, G.; Fan, C.
Secure, QoS-enabled Mobility Support for IP-based Networks Proceedings Article
In: IP Based Cellular Network Conference (IPCN), Paris, France, 2003.
Abstract | Links | BibTeX | Tags: handover, mobile communication
@inproceedings{Fu:IPCN:2003,
title = {Secure, QoS-enabled Mobility Support for IP-based Networks},
author = {X. Fu and T. Chen and A. Festag and H. Karl and G. Schäfer and C. Fan},
url = {https://festag-net.de/wp-content/uploads/2003_Fu_ICPN.pdf},
year = {2003},
date = {2003-05-24},
urldate = {2003-05-24},
booktitle = {IP Based Cellular Network Conference (IPCN)},
address = {Paris, France},
abstract = {Abstract-The rising number of mobile users, the advent of various radio access technologies, and the increasing importance of IP services over wireless as well as wired networks pose a number of new challenges. While Mobile IP has been designed for mobility management in IP networks, it may result in high latency and signaling overhead during handoff. Thus, advanced mobility mechanisms improving Mobile IP are desired to perform efficient handoffs. Also, appropriate Quality-of-Service (QoS) support is needed for mobility-enhanced IP in order to meet end users' expectations. Furthermore, security measures are required to protect the network infrastructure. This paper describes the Secure, QoS-enabled Mobility (SeQoMo) architecture addressing these issues. In particular, optimization of handoff operations, low-latency QoS re-establishment for IP-level handoff, authentication, and QoS-aware authorization for mobile nodes are investigated and integrated in a unified framework. We also describe how the SeQoMo architecture as a whole supports efficient handoff processing especially during local movements, with optimized QoS support and authentication and QoS-aware authorization services.},
keywords = {handover, mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
Abstract-The rising number of mobile users, the advent of various radio access technologies, and the increasing importance of IP services over wireless as well as wired networks pose a number of new challenges. While Mobile IP has been designed for mobility management in IP networks, it may result in high latency and signaling overhead during handoff. Thus, advanced mobility mechanisms improving Mobile IP are desired to perform efficient handoffs. Also, appropriate Quality-of-Service (QoS) support is needed for mobility-enhanced IP in order to meet end users' expectations. Furthermore, security measures are required to protect the network infrastructure. This paper describes the Secure, QoS-enabled Mobility (SeQoMo) architecture addressing these issues. In particular, optimization of handoff operations, low-latency QoS re-establishment for IP-level handoff, authentication, and QoS-aware authorization for mobile nodes are investigated and integrated in a unified framework. We also describe how the SeQoMo architecture as a whole supports efficient handoff processing especially during local movements, with optimized QoS support and authentication and QoS-aware authorization services.
129.
Festag, A.; Karl, H.; Wolisz, A.
Classification and Evaluation of Multicast-based Mobility Support in All-IP Cellular Networks Proceedings Article
In: KiVS 2003, pp. 233-244, Leipzig, Germany, 2003.
Abstract | Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:KiVS:2003,
title = {Classification and Evaluation of Multicast-based Mobility Support in All-IP Cellular Networks},
author = {A. Festag and H. Karl and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/2003_Festag_KIVS.pdf},
year = {2003},
date = {2003-02-25},
urldate = {2003-02-25},
booktitle = {KiVS 2003},
pages = {233-244},
address = {Leipzig, Germany},
abstract = {To solve the IP mobility problem the use of multicast has been proposed in a number of different approaches, applying multicast in different characteristic ways. In this paper we provide a framework to classify such approaches by analyzing requirements, options for using multicast protocols, and mobility functionalities augmenting the multicast. Within this framework we identify promising combinations of mechanisms and derive four classes of multicast protocols. These classes include both the standard any-source IP multicast model as well as non-standard multicast models. In particular, the use of source-specific multicast is a new approach to support mobility and turns out to be especially beneficial. The paper describes a corresponding network architecture and a flexible software environment that allows to easily implement these and other classes of mobility-supporting multicast protocols. Based on this software environment, an implemented prototype and measurements quantify handover-specific metrics, namely handover and paging latency and packet loss and duplication rates, showing that a multicast-based mobility solution has comparable performance to standard Mobile IP/hierarchical Mobile IP. Moreover, it is shown that a non-standard multicast model has reduced implementation and deployment complexity and security risks than a standard multicast model.},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
To solve the IP mobility problem the use of multicast has been proposed in a number of different approaches, applying multicast in different characteristic ways. In this paper we provide a framework to classify such approaches by analyzing requirements, options for using multicast protocols, and mobility functionalities augmenting the multicast. Within this framework we identify promising combinations of mechanisms and derive four classes of multicast protocols. These classes include both the standard any-source IP multicast model as well as non-standard multicast models. In particular, the use of source-specific multicast is a new approach to support mobility and turns out to be especially beneficial. The paper describes a corresponding network architecture and a flexible software environment that allows to easily implement these and other classes of mobility-supporting multicast protocols. Based on this software environment, an implemented prototype and measurements quantify handover-specific metrics, namely handover and paging latency and packet loss and duplication rates, showing that a multicast-based mobility solution has comparable performance to standard Mobile IP/hierarchical Mobile IP. Moreover, it is shown that a non-standard multicast model has reduced implementation and deployment complexity and security risks than a standard multicast model.
130.
Festag, A.; Westhoff, L.; Wolisz, A.
The MOMBASA Software Environment –- A Toolkit for Performance Evaluation of Multicast-Based Mobility Support in IP Networks Proceedings Article
In: Performance Tools, pp. 212-219, London, GB, 2002.
Abstract | Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:PerfTools:2002,
title = {The MOMBASA Software Environment –- A Toolkit for Performance Evaluation of Multicast-Based Mobility Support in IP Networks},
author = {A. Festag and L. Westhoff and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/2002_Festag_PerfTools.pdf},
year = {2002},
date = {2002-04-14},
urldate = {2002-04-14},
booktitle = {Performance Tools},
pages = {212-219},
address = {London, GB},
abstract = {The MOMBASA Software Environment is a toolkit that implements mobility-related functionalities complementing multicast protocols for multicast-based mobility support. The functionalities provided by the MOMBASA Software Environment include detection of link availability, registration, location update, paging, address translation, handoff initiation, handoff control, rerouting, prevention of handoff oscillation and inactive handoff suppression. The MOMBASA Software Environment is targeted for researchers investigating the support of host mobility in IP-based cellular networks. It aims at performance evaluation of mobility support by means of measurements. The software is easy to maintain, to configure and to extend: a) It has a clear design, b) it provides well-defined configuration and management interfaces, c) policies can be used to control and tune the system behavior and d) it has a generic interface to the multicast which facilitates to investigate multicast protocols of different types. This paper describes the functionalities, features and structure of the MOMBASA Software Environment and presents a framework for evaluating the performance of mobility support using the MOMBASA Software Environment. The MOMBASA Software Environment is open software under GNU Public License. It is freely available, extensively tested and well documented.},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
The MOMBASA Software Environment is a toolkit that implements mobility-related functionalities complementing multicast protocols for multicast-based mobility support. The functionalities provided by the MOMBASA Software Environment include detection of link availability, registration, location update, paging, address translation, handoff initiation, handoff control, rerouting, prevention of handoff oscillation and inactive handoff suppression. The MOMBASA Software Environment is targeted for researchers investigating the support of host mobility in IP-based cellular networks. It aims at performance evaluation of mobility support by means of measurements. The software is easy to maintain, to configure and to extend: a) It has a clear design, b) it provides well-defined configuration and management interfaces, c) policies can be used to control and tune the system behavior and d) it has a generic interface to the multicast which facilitates to investigate multicast protocols of different types. This paper describes the functionalities, features and structure of the MOMBASA Software Environment and presents a framework for evaluating the performance of mobility support using the MOMBASA Software Environment. The MOMBASA Software Environment is open software under GNU Public License. It is freely available, extensively tested and well documented.
131.
Festag, A.
Mobility Support in IP-Based Networks – A Multicast-Based Approach Proceedings Article
In: 8th Workshop of HP Openview University Association, Berlin, Germany, 2001.
Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:HP-OVUA:2001,
title = {Mobility Support in IP-Based Networks – A Multicast-Based Approach},
author = {A. Festag},
url = {https://festag-net.de/wp-content/uploads/2000_Festag_HP-OVUA.pdf},
year = {2001},
date = {2001-06-24},
urldate = {2001-06-24},
booktitle = {8th Workshop of HP Openview University Association},
address = {Berlin, Germany},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
132.
Festag, A.; Wolisz, A.
Performance Evaluation of Mobile IP: Investigating the Concept of Hierarchical Foreign Agents Proceedings Article
In: Mobility for All-IP Networks – Mobile IP (MAIN), Berlin, Germany, 2001.
Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:MAIN:2001,
title = {Performance Evaluation of Mobile IP: Investigating the Concept of Hierarchical Foreign Agents},
author = {A. Festag and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/2001_Festag_MAIN.pdf},
year = {2001},
date = {2001-04-26},
urldate = {2001-04-26},
booktitle = {Mobility for All-IP Networks – Mobile IP (MAIN)},
address = {Berlin, Germany},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
133.
Festag, A.; Wolisz, A.
MOMBASA: Mobility Support -– A Multicast-Based Approach Proceedings Article
In: European Wireless, Dresden, Germany, 2000.
Abstract | Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:EW:2000,
title = {MOMBASA: Mobility Support -– A Multicast-Based Approach},
author = {A. Festag and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/2000_Festag_EuropWireless.pdf},
year = {2000},
date = {2000-09-12},
urldate = {2000-09-12},
booktitle = {European Wireless},
address = {Dresden, Germany},
abstract = {In general IP multicast supports location-independent addressing and routing for a group of hosts. This ability is similar to the requirement for mobility support in IP-based networks though in a different context. MOMBASA stands for ``MObility support – a Multicast BASed Approach''. It is intended to utilise multicast in order to support network level mobility. The basic mechanism of a multicast-based handover can be composed of a multicast join- and leave-operation of the new and old multicast router, respectively. Additionally to the basic mechanism, MOMBASA investigates extended multicast functionalities which improves the handover in terms of the handover latency, the management of the multicast group and adaptation of the multicast data traffic to the wireless transmission capabilities. In particular the extended multicast functionalities are useful for vertical handover. Unfortunately today's IP multicast suffers from scalability problems and is not generally available. Nevertheless it is commonly expected that the future Internet will provide an optimised multicast. MOMBASA works out the requirements of handover on future multicast protocols and investigates alternate IP-style multicast protocols. As a first approach a multicast protocol is considered which realises a dynamic multipoint-to-multipoint communication in switched networks. An experimental handover testbed is set up which proofs the basic approach and provides extended multicast functionalities. The testbed is described and performance results are given. Other IP-style multicast protocol will be investigated in further steps.},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
In general IP multicast supports location-independent addressing and routing for a group of hosts. This ability is similar to the requirement for mobility support in IP-based networks though in a different context. MOMBASA stands for ``MObility support – a Multicast BASed Approach''. It is intended to utilise multicast in order to support network level mobility. The basic mechanism of a multicast-based handover can be composed of a multicast join- and leave-operation of the new and old multicast router, respectively. Additionally to the basic mechanism, MOMBASA investigates extended multicast functionalities which improves the handover in terms of the handover latency, the management of the multicast group and adaptation of the multicast data traffic to the wireless transmission capabilities. In particular the extended multicast functionalities are useful for vertical handover. Unfortunately today's IP multicast suffers from scalability problems and is not generally available. Nevertheless it is commonly expected that the future Internet will provide an optimised multicast. MOMBASA works out the requirements of handover on future multicast protocols and investigates alternate IP-style multicast protocols. As a first approach a multicast protocol is considered which realises a dynamic multipoint-to-multipoint communication in switched networks. An experimental handover testbed is set up which proofs the basic approach and provides extended multicast functionalities. The testbed is described and performance results are given. Other IP-style multicast protocol will be investigated in further steps.
134.
Festag, A.; Assimakopoulos, T.; Westhoff, L.; Wolisz, A.
Rerouting for Handover in Mobile Networks with Connection-Oriented Backbones: An Experimental Testbed Proceedings Article
In: IEEE Conference on High Performance Switching and Routing (ICATM), pp. 491-499, Heidelberg, Germany, 2000.
Abstract | Links | BibTeX | Tags: mobile communication, multicast
@inproceedings{Festag:ICATM:2000,
title = {Rerouting for Handover in Mobile Networks with Connection-Oriented Backbones: An Experimental Testbed},
author = {A. Festag and T. Assimakopoulos and L. Westhoff and A. Wolisz},
url = {https://ieeexplore.ieee.org/document/856700},
doi = {10.1109/HPSR.2000.856700},
year = {2000},
date = {2000-06-26},
urldate = {2002-08-06},
booktitle = {IEEE Conference on High Performance Switching and Routing (ICATM)},
pages = {491-499},
address = {Heidelberg, Germany},
abstract = {The rerouting of connections for handover in a broadband mobile cellular network is investigated. We address networks with a connection-oriented backbone, which supports quality-of-service (QoS). Moreover it is assumed an IP-style multicast on top of the connection-oriented network. We advocate to utilize the IP-style multicast in order to reroute connections for handover. Three rerouting schemes are proposed, which are based on the IP-style multicast. One of the schemes realizes a predictive approach, where a call is pre-established to potential new base stations by setting up a multicast tree with neighboring base stations as leaf nodes. This approach reduces the handover latency caused by rerouting to an absolute minimum and improves communication with strict time constraints and frequent handover. For experimental investigations of the rerouting schemes a testbed is set up, which is based on an open, non-proprietary, experimental networking environment. Its signaling software offers a direct many-to-many communication, rather than requiring one-to-many overlays and the switching hardware supports scalable and efficient multicast by cell-recycling. The testbed is performance evaluation of the rerouting scheme.},
keywords = {mobile communication, multicast},
pubstate = {published},
tppubtype = {inproceedings}
}
The rerouting of connections for handover in a broadband mobile cellular network is investigated. We address networks with a connection-oriented backbone, which supports quality-of-service (QoS). Moreover it is assumed an IP-style multicast on top of the connection-oriented network. We advocate to utilize the IP-style multicast in order to reroute connections for handover. Three rerouting schemes are proposed, which are based on the IP-style multicast. One of the schemes realizes a predictive approach, where a call is pre-established to potential new base stations by setting up a multicast tree with neighboring base stations as leaf nodes. This approach reduces the handover latency caused by rerouting to an absolute minimum and improves communication with strict time constraints and frequent handover. For experimental investigations of the rerouting schemes a testbed is set up, which is based on an open, non-proprietary, experimental networking environment. Its signaling software offers a direct many-to-many communication, rather than requiring one-to-many overlays and the switching hardware supports scalable and efficient multicast by cell-recycling. The testbed is performance evaluation of the rerouting scheme.
135.
Assimakopoulos, T.; Festag, A.; Fitzek, F.; Irmer, S.; Wolisz, A.
Integrated Broadband Mobile System (IBMS) Demonstrator Concept Proceedings Article
In: ACTS Mobile Communications Summit, pp. 365-370, Sorrento, Italy, 1999.
BibTeX | Tags: mobile communication, wireless communication
@inproceedings{Assimakopoulos:MobileCommSummm:1999,
title = {Integrated Broadband Mobile System (IBMS) Demonstrator Concept},
author = {T. Assimakopoulos and A. Festag and F. Fitzek and S. Irmer and A. Wolisz},
year = {1999},
date = {1999-06-08},
urldate = {1999-06-08},
booktitle = {ACTS Mobile Communications Summit},
pages = {365-370},
address = {Sorrento, Italy},
keywords = {mobile communication, wireless communication},
pubstate = {published},
tppubtype = {inproceedings}
}
136.
Festag, A.; Fitzek, F.; Wolisz, A.
WATM Testbed for Handover Experiments and Measurements Proceedings Article
In: Workshop Wireless Broadband In-House Digital Networks, Ulm, Germany, 1998.
BibTeX | Tags: mobile communication, wireless communication
@inproceedings{Festag:WirelBroadbInHouseDigNet:1998,
title = {WATM Testbed for Handover Experiments and Measurements},
author = {A. Festag and F. Fitzek and A. Wolisz},
year = {1998},
date = {1998-01-31},
booktitle = {Workshop Wireless Broadband In-House Digital Networks},
address = {Ulm, Germany},
keywords = {mobile communication, wireless communication},
pubstate = {published},
tppubtype = {inproceedings}
}
137.
Festag, A.; Weinmiller, J.; Wolisz, A.
Interconnection of Wireless Cells -– a Multicast-Based Approach Proceedings Article
In: International Conference on Universal Personal Communications (ICUPC), San Diego, CA, USA, 1997.
Abstract | Links | BibTeX | Tags: mobile communication, wireless communication
@inproceedings{Festag:ICUPC:1997,
title = {Interconnection of Wireless Cells -– a Multicast-Based Approach},
author = {A. Festag and J. Weinmiller and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/1997_Festag_ICUPC.pdf},
doi = {10.1109/ICUPC.1997.627225},
year = {1997},
date = {1997-10-12},
urldate = {2002-08-06},
booktitle = {International Conference on Universal Personal Communications (ICUPC)},
address = {San Diego, CA, USA},
abstract = {This paper presents a solution to interconnect wireless cells to reach common LAN-dimensions. The protocol uses multicast to support fast handover in the presence of mobility in a local environment. The approach is strictly connectionless. A performance evaluation points out the benefits gained by using the multicast and estimates the drawbacks induced by the connectionless approach and by buffering.},
keywords = {mobile communication, wireless communication},
pubstate = {published},
tppubtype = {inproceedings}
}
This paper presents a solution to interconnect wireless cells to reach common LAN-dimensions. The protocol uses multicast to support fast handover in the presence of mobility in a local environment. The approach is strictly connectionless. A performance evaluation points out the benefits gained by using the multicast and estimates the drawbacks induced by the connectionless approach and by buffering.
138.
Bronzel, M.; Hunold, D.; Fettweis, G.; Konschak, T.; Dölle, T.; Brankovic, V.; Alikhani, H.; Ebert, J. P.; Festag, A.; Fitzek, F.; Wolisz, A.
Integrated Broadband Mobile System (IBMS) featuring Wireless ATM Proceedings Article
In: ACTS Mobile Communication Summit, Aalborg, Denmark, 1997.
Abstract | Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:MobileComSummit:1997,
title = {Integrated Broadband Mobile System (IBMS) featuring Wireless ATM},
author = {M. Bronzel and D. Hunold and G. Fettweis and T. Konschak and T. Dölle and V. Brankovic and H. Alikhani and J. P. Ebert and A. Festag and F. Fitzek and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/1997_Festag_MobileComSummit.pdf},
year = {1997},
date = {1997-10-07},
urldate = {1997-10-07},
booktitle = {ACTS Mobile Communication Summit},
address = {Aalborg, Denmark},
abstract = {IBMS is a concept for future mobile communication systems to provide a large range of data rates with different degrees of mobility. The integration of heterogeneous services and communication systems requires a common Network Access and Connectivity CHannel (NACCH) for basic signaling to provide permanent network access. Smart Antennas are utilized to adaptively enable a trade-off between mobility and data rate.},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}
IBMS is a concept for future mobile communication systems to provide a large range of data rates with different degrees of mobility. The integration of heterogeneous services and communication systems requires a common Network Access and Connectivity CHannel (NACCH) for basic signaling to provide permanent network access. Smart Antennas are utilized to adaptively enable a trade-off between mobility and data rate.
139.
Weinmiller, J.; Schläger, M.; Festag, A.; Wolisz, A.
Performance Study of Access Control in Wireless LANs – IEEE 802.11 DFWMAC and ETSI RES10 HIPERLAN Journal Article
In: ACM Journal on Mobile Networks and Applications (Special Issue on Channel Access), vol. 2, no. 1, pp. 55-76, 1997.
Abstract | Links | BibTeX | Tags: simulation, wireless communication
@article{Weinmiller:MNET:1997,
title = {Performance Study of Access Control in Wireless LANs – IEEE 802.11 DFWMAC and ETSI RES10 HIPERLAN},
author = {J. Weinmiller and M. Schläger and A. Festag and A. Wolisz},
url = {https://dl.acm.org/doi/10.1023/A:1013255927445},
doi = {10.1023/A:1013255927445},
year = {1997},
date = {1997-06-01},
urldate = {1997-06-01},
journal = {ACM Journal on Mobile Networks and Applications (Special Issue on Channel Access)},
volume = {2},
number = {1},
pages = {55-76},
abstract = {Currently two projects are on their way to standardize physical layer and medium access control for wireless LANs - IEEE 802.11 and ETSI RES 10 Hiperlan. This paper presents an introduction to both projects focusing on the applied access schemes. Further we will present our simulation results, analyzing the performance of both access protocols depending on the number of stations and on the packet size, evaluating them regarding their capability to support QoS parameters, regarding the impact of hidden terminals and their range extension strategy.},
keywords = {simulation, wireless communication},
pubstate = {published},
tppubtype = {article}
}
Currently two projects are on their way to standardize physical layer and medium access control for wireless LANs - IEEE 802.11 and ETSI RES 10 Hiperlan. This paper presents an introduction to both projects focusing on the applied access schemes. Further we will present our simulation results, analyzing the performance of both access protocols depending on the number of stations and on the packet size, evaluating them regarding their capability to support QoS parameters, regarding the impact of hidden terminals and their range extension strategy.
140.
Festag, A.; Weinmiller, J.; Wolisz, A.
Handover Protocol for Interconnecting Wireless Cells Proceedings Article
In: IEEE Workshop on Local and Metropolitan Area Networks (IEEE LANMAN), Berlin/Potsdam, Germany, 1996.
Links | BibTeX | Tags: mobile communication
@inproceedings{Festag:LANMAN:1996,
title = {Handover Protocol for Interconnecting Wireless Cells},
author = {A. Festag and J. Weinmiller and A. Wolisz},
url = {https://festag-net.de/wp-content/uploads/1996_Festag_LANMAN.pdf},
year = {1996},
date = {1996-04-04},
urldate = {1996-04-04},
booktitle = {IEEE Workshop on Local and Metropolitan Area Networks (IEEE LANMAN)},
address = {Berlin/Potsdam, Germany},
keywords = {mobile communication},
pubstate = {published},
tppubtype = {inproceedings}
}