Adress:Â	Dortmund University of Technology Department Electrical Engineering and Information Technology Communication Networks Institute Otto-Hahn-Str. 6 D-44227 DortmundÂ
E-mail:Â	This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Skype:
Phone:	+49-231-755-4522
Fax:Â	+49-231-755-6136
Office:	C1-04-177
Office hours:Â	Monday, 15:00-16:00 Uhr by e-mail appointment

 

Research Interests

• Optimization of 4G networks for mission critical communications
• IP overlay network for mission critical group communication
• System- and gateway design for heterogeneous PMR (TETRA) and IP based next generation mobile networks (4G)
• Fairness and QoS in mission critical communications
• Geo-routing in multi-hop PMR networks
• Analytical and multiscale simulative performance analysis of networks with heterogeneous structures
• Security in communication networks and security engineering

Possible Thesises

All possible thesises deal with the system design for a coupled PMR - IP based mobile network (4G LTE, 3G, WiFi, WiMAX, satellite link). You could either deside to work on a simulation based on OMNeT++ or you can build up prototypes for real world measurements (C++, JAVA, iOS, Qt)

Possible titlescould be:

• Performance analysis and optimazation of a group communication server in a heterogeneous architecture (analytical model and simulation)
• Integration of specific group communication services (enhanced direct mode) in 4G networks (simulation)
• Design and performance evaluation of a geo-routing algorithm for resource restriced mashed PMR networks (simulation)

You find more information on a dedicated page.

Personal Facts

Tasks

• Coordinatior (lecture, exercise and lab) for the lecture Modeling and Dimensioning of Communikation Networks
• German WP 4 Coordinator in ANCHORS reserach project
• Co-leader student project OS3
• Responsible engineer for the radio outdoor testing site (ROTS)
• Coordinator for the lecture 'Grundlagen der Elektrotechnik'
• Coordinator for the lecture  'Betriebswirtschaftliche Grundlagen für IKT' Ingenieure
• IT und Software coordinator

 

GPG-Key:

File and  Mouseover .

Talks:

• TETRA World Congress 2012 (Dubai): "Integrated PMR-Broadband-IP Network for Secure Realtime Multimedia Information Sharing"
• 5th annual CMI International Conference on Public Safety and Emergency (Copenhagen): "Concepts, Architecture and Performance Evaluation for Next Generation Public Safety Communicaiton on 4G Technologies"

Publications: 

• B. Niehöfer, S. Subik, C. Wietfeld. ''The CNI Open Source Satellite Simulator based on OMNeT++'', 6th International OMNeT++ Workshop, Cannes, France, Mar 2013.
  
  
• S. Subik, B. Niehöfer, C. Wietfeld. ''Adaptive Multiplexing Gateway for Mission Critical Communications over High Latency IP-based Satellite Backhaul Links'', IEEE International Conference on Technologies for Homeland Security, Boston, USA, Nov 2012.
  
  
• M. Sbeiti, T. Tran, S. Subik, A. Wolff, C. Wietfeld. ''MuSE: Novel Efficient Multi-Tier Communication Security Model for Emergency and Rescue Operations'', IEEE MASS Workshop on Mobile Ad-Hoc Networks for Public Safety Systems - WMAPS, Valencia, Spain, Oct 2011.
  
  
• S. Subik, C. Wietfeld. ''Integrated PMR-Broadband-IP Network for Secure Realtime Multimedia Information Sharing'', Technologies for Homeland Security (HST), 2011 IEEE International Conference on, , Nov 2011.
  
  
• B. Niehöfer, S. Subik, C. Wietfeld. ''Optimization Approach for Raytracing Analyses by Smart Minimization of the Modeling Level of Detail'', 22nd IASTED International Symposia on Modelling and Simulation, Calgary, Canada, Jul 2011.
  
  
• S. Subik, C. Lewandowski, D. Weber, H. Schreckenberg, C. Wietfeld. ''A Combined Traffic and Radio Network Simulation based on Predictive Scenarios'', European Simulation and Modelling Conference (ESM), Hasselt, Belgium, Oct 2010.
  
  
• C. Müller, S. Subik, A. Wolff, C. Wietfeld. ''A System Design Framework for Scalability Analysis of Geographic Routing Algorithms in Large-Scale Mesh Networks'', 3rd International Workshop on OMNeT++ co-located with International ICST Conference on Simulation Tools and Techniques (SIMUTools), Malaga, Spain, Mar 2010.
  
  
• S. Subik, S. Rohde, T. Weber, C. Wietfeld. ''SPIDER: Enabling Interoperable Information Sharing between Public Institutions for Efficient Disaster Recovery and Response'', IEEE International Conference on Technologies for Homeland Security, Waltham, MA, USA, 2010.
  
  
• A. Wolff, S. Rohde, S. Subik, C. Wietfeld. ''Organisationsuebergreifender sicherer Datenaustausch zwischen heterogenen Kriseninformationssystemen'', Tagungsband zum Workshop zur IT-Unterstuetzung von Rettungskraeften, , Oct 2009.
  
  
• K. Daniel, S. Rohde, S. Subik, C. Wietfeld. ''Performance Evaluation for Mobile WiMAX Handover with a Continuous Scanning Algorithm'', IEEE Mobile WiMAX Symposium, Napa Valley, CA, , 7 2009.
  
  
• A. Lewandowski, R. Burda, S. Subik, C. Wietfeld. ''A Multiscale Simulation Environment for Performance Evaluation of high reliable heterogeneous Communication Networks'', European Simulation and Modelling Conference (ESM), Le Havre, France, , Oct 2008.
  
  
• A. Wolff, S. Subik, C. Wietfeld. ''Performance analysis of highly available ad hoc Surveillance Networks Based on Dropped Units'', The 2008 IEEE Technologies for Homeland Security Conference, Boston, MA, USA, May 2008.
  
  
• C. Wietfeld, A. Wolff, S. Subik. ''Design and Performance Evaluation of a Wireless Ad-Hoc Emergency Response Management System'', ComNets - Sonderband zur Eröffnung des ComNets-Gebäudes, , 11 2008.
  
  
• S. Subik, A. Wolff, C. Wietfeld. ''Emergency Digital Telecommunication Standardisation'', , 2008.