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Mobile Communications

Topic

The 3G Long Term Evolution VS UMTS

Kind of work:
Project Work
Supervisor:
M.Eng. Kinan Ghanem
Students:
Ningning Gu
Ying Qian
Status:
finished
Abstract:

Topic

Deployment cost optimization for shared networks

Kind of work:
Diploma Thesis
Supervisor:
Dr.-Ing. Florian Liers
Students:
Stephan Fietzek
Status:
finished
Abstract:

Topic

Literature research Wireless Mesh Network

Kind of work:
Advanced Seminar
Supervisor:
Dr.-Ing. Mohamed Abdrabou Kalil
Students:
Lei Bai
Wenjie Cai
Status:
finished
Abstract:

Topic

Security for Java based distributed agents

Kind of work:
Student research project
Supervisor:
Dr.-Ing. Florian Liers
Students:
Matthias Köhler
Status:
finished
Abstract:
This work deals with the Java security mechanism, architecture and implementation. It contains also a discription of an implementation of a Securityapplication
for testing Java Security. Further it gives a review to the possibilities of Java security in combination with mobile softwareagents. We take a look at the Java Agent DEvelopment framework (JADE), which is an extensive opensource plattform for mobile agents. Above all the work explains modifications of JADE to provide Java security functions.

Topic

Overview of IEEE 802.22 Standard:

Kind of work:
Advanced Seminar
Supervisor:
M.Eng. Kinan Ghanem
Students:
Christian Beier
Thomas Müller
Status:
finished
Abstract:
IEEE 802.22 "Standard for Wireless Regional Area Networks (WRAN)'' is a new standard that enables the deployment of wireless regional area networks using the unused TV channels in the VHF/UHF bands between 54 and 862 MHZ. This work aims to introduce an overview about the IEEE 802.22 standard.

Topic

User movement for mobile communication

Kind of work:
Student research project
Supervisor:
Dr.-Ing. Florian Liers
Students:
Jens Kappert
Status:
finished
Abstract:
Since mobility models are the basis for the planning of new Radio Networks, the aim of this work is to test different mobility models, which are used for mobile communication. These models are tested for their advantages and disadvantages in selected szenarios. Some of these models are implemented and simulated in the CRRM- Simulator and the results are analyzed. Additionally a self developed mobility model is tested for its applicability. The models are implemented with the programming language Java.

Topic

Actual Addressing protocols in Adhoc Networks

Kind of work:
Project Work
Supervisor:
Dr. Ausama Yousef
Students:
Karsten Roscher
Stefan Schonert
Steven Simon
Status:
finished
Abstract:

Topic

Overview of Mobile TV Technology

Kind of work:
Advanced Seminar
Supervisor:
M.Eng. Kinan Ghanem
Students:
Xiaofeng Fan
Ningning Gu
Ying Qian
Status:
finished
Abstract:
Mobile TV is a new service(Mobile and Broadcast collaboration) which has been developed to enable mobile carriers to offer live streaming video channels.The aim of this case study is to describe the Mobile TV concept.The main requirements for this technology should be explained.

Topic

Developtment of an DHCP-Relay-Agent

Kind of work:
Student research project
Supervisor:
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Dipl.-Inf. Holger Kärst
Students:
Martin Werner
Status:
finished
Abstract:

Topic

Automatic channel management in WLAN-Networks

Kind of work:
Student research project
Supervisor:
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Dipl.-Inf. Holger Kärst
Students:
Martin Instenberg
Status:
finished
Abstract:

Topic

Performance Analysis of Network-based Mobility Management Protocols

Kind of work:
Diploma Thesis
Supervisor:
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Dr.-Ing. Ali Diab
Students:
Kalin Getov
Status:
finished
Abstract:

Topic

Java based environment for distributed agents

Kind of work:
Student research project
Supervisor:
Dr.-Ing. Florian Liers
Students:
Maik Luxa
Status:
finished
Abstract:
This paper deals with the application of agents in the field of software programming. It briefly explains this concept and shows advantages of the Java programming language in this application area. The second part will present some agent systems. After that there is a detailed description of the “Java Agent Development Framework“ JADE, which is particularly suitable for our practical needs. It also shows a mobile agent as an application example.

Topic

Placement of software services on servern in communication networks

Kind of work:
Diploma Thesis
Supervisor:
Dr.-Ing. Florian Liers
Students:
Ronny Lehmann
Status:
finished
Abstract:
This diploma thesis deals with the placement of services on servers in a network. The main question, on which node one or more servers should be installed, was investigated. This problem is known in graph theory as the "k-median problem". In the course of this thesis different algorithms, known from literature, were classified. Afterwards a selection of those algorithms was tested on real as well as on generated networks. Four algorithms were chosen for testing: Random, BruteForce, HotSpot-Greedy and HotSpot-Cluster. Thus it was possible to compare their result quality, implementation complexity and run-time complexity. It turned out that the results were depending on network topology and parameters. Therefore no universal algorithm exists to solve the problem even though the random algorithm provided good results nearly everytime.

Topic

Location and Routing Areas in UMTS/GSM

Kind of work:
Student research project
Supervisor:
Dr.-Ing. Florian Liers
Students:
Thomas Müller
Status:
finished
Abstract:
This document is an overview on existing apporaches for location manage-
ment in GSM/UMTS networks. Besides a introduction into the topic, the main
problems and goals the static and dynamic approaches are discussed and com-
pared, including its pros, cons and references to existing literatur.

Topic

Distributed algorithms for functionality placement in mobil communication networks

Kind of work:
Diploma Thesis
Supervisor:
Dr.-Ing. Florian Liers
Students:
Daniel Rehm
Status:
finished
Abstract:

Topic

Implementierung und Evaluierung von Low latency Mobile IP Fast Authentication Protokol (L-MIFA)

Kind of work:
Diploma Thesis
Supervisor:
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Dr.-Ing. Ali Diab
Students:
Christian Kellner
Status:
finished
Abstract:

Topic

Erstellung von Mobilitätsmedellegenerator für WLANsim Tool

Kind of work:
Advanced Seminar
Supervisor:
Dr.-Ing. Ali Diab
Students:
Stephan Bärwolf
Dominik Tugend
Status:
finished
Abstract:

Topic

Simulation von WLANs unter Windows- Erweiterung des graphischen Werkzeugs (WLANsim)

Kind of work:
Student research project
Supervisor:
Dr.-Ing. Ali Diab
Students:
Nico Engelman
Peter Heilwagen
Status:
finished
Abstract:

Topic

Survey for Long Term Evolution of UMTS

Kind of work:
Project Work
Supervisor:
Dr.-Ing. Florian Liers
Students:
Guanzhou Lu
Status:
finished
Abstract:

Topic

Management of virtual network elements

Kind of work:
Advanced Seminar
Supervisor:
Dipl.-Inf. Holger Kärst
Dipl.-Ing. René Böringer
Students:
Henning Rauch
Thomas Schmidt
Status:
finished
Abstract:

Topic

Multiagentsystems and Onotologies

Kind of work:
Advanced Seminar
Supervisor:
Dipl.-Inf. Holger Kärst
Students:
Peter Amthor
Benjamin Cool
Michael Ring
Status:
finished
Abstract:
This paper deals with the combination of Multi-Agent-Systems and Ontologies. Our intention was to present several applications based on examples issued in literature.

Eventually potential perspectives of this synergy will be highlighted and evaluated in the form of devised scenarios.
As an approach we decided to firstly provide an insight into basics of Agents and Multi-Agent-Systems as well as Ontologies. Chapter 2 deals with these issues in order to communicate essential knowledge to build up on in Chapter 3. Here we point out the conjunction of both concepts on the basis of the mentioned examples in literature in a practice-oriented way.
Finally this issue is enhanced in Chapter 4, where we will discuss some specific scenarios which could be, according to our view, the future of technological development. We will end with a summarizing review based on the exposed applications.

Topic

Reconfiguration of SNORT-INLINE with Java according to pre-defined conditions.

Kind of work:
Advanced Seminar
Supervisor:
MSc. CME Nadir Zamin-Khan
Students:
Philipp Drieß
Marcel Richter
Status:
finished
Abstract:

Topic

Design of an QoS-aware Multicast Protocol for MPLS-based Radio Access Networks

Kind of work:
Diploma Thesis
Supervisor:
Dipl.-Ing. René Böringer
Students:
Steffen Schmidt
Status:
finished
Abstract:
This document describes two approaches for the integration of a Quality of Service-aware multicast into MPLS-based Radio Access Networks (RAN). The first protocol, O-MRP (Multicast Tree Optimization-enabled QoS-aware Multicast Routing Protocol), simply relies on an IP network structure. O-MRP provides fast joining and leaving capabilities for mobile users to multicast groups. Additionally, the protocol allows for multicast route optimization, aiming on different optimization goals. O-MRP uses a unicast routing protocol to construct multicast routing tables. I-MRP (Integrated Multicast Routing Protocol), on the other hand, directly integrates into MPLS and RSVP-TE. For this purpose I-MRP extends RSVP-TE to distribute multicast routing information over the MPLS network and construct multicast Label Switched Paths (LSP). I-MRP, however, does not support multicast route optimization. Both approaches require only changes to routers within the RAN. The protocols are transparent to Mobile Nodes (MN) and network elements outside the RAN.

Topic

Self-organizing Monitoring for MPLS-based Networks

Kind of work:
Diploma Thesis
Supervisor:
Dipl.-Ing. René Böringer
Students:
Stefan Leistritz
Status:
finished
Abstract:
MultiProtocol Label Switching (MPLS)- based networks obtaining more and more acceptability and distribution in provider- and backbone networks. Nevertheless, concepts for monitoring MPLS-based networks efficiently are still missing. In this diploma thesis a concept for self-organizing monitoring for MPLS-based networks is developed. At first some possibilities of designing monitoring more efficiently by using MPLS-specific information are shown. Therefore it is shown how to maximize the advantage of a single monitor by using information out of existing signaling messages (RSVP-TE). Based on this knowledge a novel concept of monitoring the whole network
with only a couple of monitors is proposed. Afterwards different positioning algorithms are studied. This helps for reducing the number of necessary monitors to a minimum. The concept of positioning of monitors at runtime should requires for new network management technologies.
By means of these approaches the monitoring system can adapt itself to different situations in the network. The behavior
and opportunities of these positioning algorithms are simulated in Matlab and by means of various MPLS-based networks reference networks. At last the extensibility of this concept and some possibilities for transferring the gained results to other technologies are shown. This work shows that only 10% of the networks nodes have to be monitors. It is sufficient that each of these monitors observe only 10 randomly chosen LSPs to monitor the whole network completly.

Topic

Erstellung von NS2 Skripten mittels WLANsim Tool

Kind of work:
Project Work
Supervisor:
Dr.-Ing. Ali Diab
Students:
Tim Kubertschak
Stefan Neugebauer
Status:
finished
Abstract:

Topic

Implementierung von einem dynamische Firewall für Intrusion Detection System (IDS)

Kind of work:
Project Work
Supervisor:
Dipl.-Ing. Jingan Xu
Dr.-Ing. Ali Diab
Students:
Roberto Leinhos
Matthias Münnich
Marco Wenzel
Status:
finished
Abstract:

Topic

Autonomic Reasoning for intelligent network management in heterogeneous networks

Kind of work:
Diploma Thesis
Supervisor:
Dipl.-Inf. Holger Kärst
Students:
Christoph Kessler
Status:
finished
Abstract:

Topic

Recherchieren der Mechanismen und der Protokolle der Physikal - und MAC Schicht in Sensornetzwerken

Kind of work:
Advanced Seminar
Supervisor:
Dr.-Ing. Ali Diab
Students:
Christian Kellner
Status:
finished
Abstract:

Topic

Simulation of WLANs under Windows- Extending of WLANsim tool

Kind of work:
Advanced Seminar
Supervisor:
Dr.-Ing. Ali Diab
Students:
Nico Engelman
Peter Heilwagen
Status:
finished
Abstract:

Topic

Analysis of a CRRM example scenario

Kind of work:
Project Work
Supervisor:
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Dr.-Ing. Florian Liers
Students:
Elena Alonso
Estefanía Olmos
Status:
finished
Abstract:
- Development of a example scenario
- Placement of the WLAN-Access Points inside the scenario
- Analysis of the original CRRM algorithm
- Comparison with the random reference algorithm