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German 5G auction - A closer look into the value of the 5G frequencies


29.03.2019 – For all those who are interested in the on-going 5G auction, CNI presents some statistical data derived from the auction results published by the BNetzA.
The statistics show first of all the progress of the bids and the sum of the frequency blocks associated to each bidding party. In addition to that the cost per frequency spectrum (in Euro/Hz) is calculated as well as the split of the frequency spectrum and its associated cost. After the first 40 rounds this analysis shows for example that although the spectrum is almost evenly split (with percentages ranging from 23% to 27% associated to each bidder) the associated bids are significantly diverging (ranging from 12 % to 35%). As a bonus a chart showing the progress of the highest bidder per frequency block illustrates the dynamics of the ongoing auction on one glance. The charts will be updated at least once per day.

The analysis has been originally prepared for the lecture "Mobile Radio Networks" and "Business Economics of Information & Communication Technologies". The discussion of the German 5G auction serves as a vivid and timely case study to demonstrate the close and complex interdependencies of technology and economics.


5G-Conference of VDE ITG committee with over 200 participants


21.03.2019 – The timing could not have been better: just one hour before the national auction of 5G frequency bands was started on March 19, 2019, in Mainz, the participants of the 5G-technology-related conference „Future of Networking / Zukunft der Netze 2019 “ were welcomed by the chairs of the VDE-ITG commitee on communication networks and systems, Joachim Sachs, Ericsson, and Prof. Christian Wietfeld, TU Dortmund. The 16th conference of the series was jointly organized with the NetSys conference at TU Munich. The well attended conference featured invited talks primarily from industry representatives: from public and potential private 5G network operators (Dt. Telekom, Vodafone and Bosch), 5G international academia and manufacturers (IMDEA Madrid, Ericsson, Nokia) as well as further 5G stakeholders (such as automation manufacturer Siemens) and representatives from 5G related projects. Many participants also used the opportunity to attend sessions and workshops of the NetSys conference discussing primarily recent results from academic research. Within the VDE-ITG committee KT2, industry and academia representatives jointly organize workshops on „hot topics“ and regular conferences related to communication networks, such as the „Future of Networking“ conference series. Prof. Christian Wietfeld, head of the CNI at TU Dortmund, has been a co-chair of the KT 2 committee for over 10 years.


First Prize, IEEE ComSoc Student Competition Winners, 2018, Supervisor: Fang-Jing Wu


03.02.2019 – The outcome of our students’ project group has been awarded the First Prize by IEEE ComSoc Member and Global Activities Council for the IEEE ComSoc Student Competition 2018 in Abu Dhabi, United Arab Emirates. The project group entitled “Passenger Flows: Crowd Mobility Analytics with Edge Computing in Public Transport” is supervised by Junior Professor Dr. Fang-Jing Wu at Department of Electrical Engineering and Information Technology, Communication Networks Institute, TU Dortmund. The student team formed by Lucas Döring, Stephanie Althoff, Kai Bitterschulte, Keng Yip Chai, Damian Grabarczyk, Yunfeng Huang, and Lidong Mao, exploits Internet-of-Things techniques combining with machine learning algorithms to solve one of the important issues in public transport in smart cities. The goal of the developed system is to monitor passenger flows in an automated public transport system. To achieve this goal, lightweight embedded devices are integrated with multiple types of sensors for sensing wireless network activities and environmental conditions, and the onboard passenger estimation algorithms are designed for analyzing real-time data and further visualization. Therefore, the technical issues in wireless opportunistic communications, multi-modal sensing and data analytics, and visualization are addressed by the team. To conduct real-world experiments, the designed prototype was validated in the H-Bahn Dortmund that is an automated hanging train in the TU Dortmund’s campus.

The developed system was evaluated by an international committee with 45 experts nominated by the Competition Co-Chairs and by IEEE ComSoc Technical Committee, covering all areas. Two-round evaluation processes were performed by the committee from different aspects of social impact, technical content, originality, practical applicability and results, and quality of presentation. The developed system is characterized by giving insight into the uncertain wireless traffic and environmental conditions via an integration of sensing techniques, statistical learning algorithms, prototyping, and practical experiments in the real world, which makes the work particularly compelling and provide a physical gateway to a connected cyber world. Congratulations to the team at Communication Networks Institute, TU Dortmund.


CNI at High-profile Event on NRW's Digitalization Strategy


02.11.2018 – CNI has been invited to present its latest 5G research results at the Digitalkonferenz.NRW. Following the invitation of Prime Minister of North Rhine-Westphalia Armin Laschet and Minister of Economics and Digital Affairs Prof. Dr. Andreas Pinkwart, over 500 guests from politics, business, science, culture and society came together to discuss the digital strategy for North Rhine-Westphalia with the state government on October 26, 2018.

At our booth we presented a 5G mmWave antenna tracking system, implementing a mmWave link at 28 GHz between a fixed base station equipped with a highly directional and electrically steerable pencil beam antenna and an Unmanned Aerial Vehicles (UAV). Beamforming and pencil beam antennas are expected to become a major component of 5G mmWave New Radio networks. While spatial separation and high gains are anticipated benefits, the suitability of those new antenna types in highly dynamic scenarios, such as the use on UAVs, requires appropriate real–time steering capabilities and needs to be proven in practice. In our testbed, a rail system is customized to generate precisely reproducible mobility trajectories of the UAV. In case the antennas are aligned within a given error margin, a stable air–to–ground highspeed connection (up to 3 Gbps) can be observed during the flight experiments.


TU Dortmund's CNI contributes to the establishment of the German Centre for Rescue Robotics in Dortmund


28.10.2018 – On October 1, 2018, a new project has started - funded by the German Ministry for Education and Research (BMBF) - which aims to establish a national competence center for rescue robotics. For the first time in Germany, first responders, researchers and industry will work closely together to realize autonomous rescue robots, which will become part of national as well as international robotic task forces for emergency rescue operations. Additionally, new test procedures will be developed, which will form the basis for standardization and certification of different robot systems acting outdoor on the ground, in the air, in water, as well as indoor. Based on its long-term track record in this research area, the Communication Networks Institute (CNI) will lead the work related to robust wireless communications of robotic systems, which allow for reliable operation even in challenging conditions of rescue operations


Excellent Paper Award at International Conference for 5G Edge Clouds


18.10.2018 – We are delighted to announce that the contribution “Evaluating Software-Defined Networking-Driven Edge Clouds for 5G Critical Communications”, by Fabian Kurtz, Igor Laukhin, Caner Bektas and Christian Wietfeld, was awarded as Excellent Paper at the 9th International Conference on ICT Convergence (ICTC) 2018. The flagship conference of the Korean Institute of Communications and Information Sciences, co-sponsored by the IEEE, took place in October in Jeju, South Korea. Within the context of the BMBF funded Franco-German project BERCOM (Blueprint for Pan-European Resilient Critical Infrastructures based on LTE Communications), the research discussed in the paper demonstrated the advantages of Edge Clouds in the scope of 5G critical infrastructure communications.


Dissertation on Software-Defined Networking for Energy Systems successfully completed

Dorsch Promotion 2018 klein

08.10.2018 – The CNI team is happy to announce that Nils Dorsch has successfully defended his dissertation on October 2, 2018. The dissertation titled "Software-Defined Networking (SDN) for Real-Time Capable, Reliable and Cost-Efficient Smart Grid Communication Infrastructures" has proposed and investigated innovative concepts for communication networks suitable for the so-called Smart Grid. The work has been carried out within the interdisciplinary DFG-funded research group 1511 on "Control and protection systems for the future energy system". Dr. Dorsch has proposed a dedicated SDN interface which enables energy system operators to control the underlying communication system through a so-called north-bound interface. These extension of the Floodlight SDN controller originally developed at Stanford University have been also made available as open source. As a unique solution approach, Nils Dorsch has integrated the Network Calculus method into the real-time SDN controller to ensure that the maximum delay bounds required by the energy system are met. The work of Nils Dorsch has attracted considerable attention: a first paper describing the overall system concept has been cited over 50 times since its publication in 2014 at the IEEE SmartGridComm conference. An analysis of the economic impact of SDN-based networks has been recently published as journal article in NETNOMICS (Springer). Another journal article on "Enabling Hard Service Guarantees in Software-Defined Smart Grid Infrastructures" is accepted to appear in Computer Networks (Elsevier).


IEEE Student Fellowship for Outstanding Contributions to Machine Learning in Communications based on research in DFG SFB 876

Sliwa Scholarship 2018 Web

11.09.2018 – We are very happy to announce that Benjamin Sliwa has received the 2018 Transportation Electronics Fellowship Award "For Outstanding Student Research Contributions to Machine Learning in Vehicular Communications and Intelligent Transportation Systems" of the Vehicular Technology Society (VTS) within the IEEE, which grants two student fellowships per year worldwide. The bestowal took place at the IEEE Vehicular Technology Conference (VTC) Fall 2018, in August in Chicago, USA, which is the flagship conference of the VTS. Within his research in project B4 "Analysis and Communication for Dynamic Traffic Prognosis" of the Collaborative Research Centre (SFB 876), Benjamin Sliwa has presented pioneering work in using machine learning for resource-efficient data transmissions within cellular vehicular networks.


Students, who visited CNI-lecture "Betriebswirtschaftliche Grundlagen der IKT", win Thyssenkrupp Manager Cup


16.07.2018 – Congratulations to the team of the IKT- and ET/IT-students Melina Geis, Thorsten Röper, Christoph Schmickler and Timo Sievernich (see photo), who have won this year's Thyssenkrupp Manager Cup. Once in a year, teams - consisting of students of TU Dortmund, FH Dortmund and the International School of Management (ISM) - compete in a corporate strategic planning simulation and try to gain additional market shares as rival companies. The winning team visited the Communication Networks Institute's lecture "Betriebswirtschaftliche Grundlagen der Informations- und Kommunikationstechnik (BGIKT)" as recently as last year. As an obligatory subject for the IKT-Bachelor's Degree (and as an elective subject for the course of studies in ET/IT), the specially tailored proposal of lectures rounds out the students' technic-scholarly qualification. The IKT-Bachelor's Degree prepares students extraordinarily to actively participate in our society's digitalization and contains a lot of practice, such as the preparation of an own business plan for a potential start-up.


IEEE Best Student Paper Award at Vehicular Technology Conference in Porto


14.07.2018 – We are very happy that Benjamin Sliwa has received the Best Student Paper award of the IEEE Vehicular Technology Conference (VTC) Spring-2018, which took place in June in Porto, Portugal (see photo). The VTC is the flagship conference of the Vehicular Technology Society within the IEEE and is typically attended by approx. 600 international scientists with a focus on wireless and mobile communications. The contribution "Efficient Machine-type Communication using Multi-metric Context-awareness for Cars used as Mobile Sensors in Upcoming 5G Network" has been co-authored by further CNI members Robert Falkenberg, Johannes Pillmann and Christian Wietfeld jointly with Thomas Liebig from the Computer Science department. It was selected from over 200 papers of the conference with PhD students as first author. The paper reports on key results of the research of the projects B4 "Analysis and Communication for Dynamic Traffic Prognosis" and A4 "Resource efficient and distributed platforms for integrative data analysis" within the Collaborative Research Centre (SFB 876). The results of the paper demonstrate the significant potential of machine-learning for the optimization of mobile networks.


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