Publications

This page provides links to my scientific papers, books, and patents. Interested visitors can check selected publications by topic and my Google Scholar profile.

Multidrone systems:
More than the sum of the parts

Now that drones have evolved to agile devices, a challenge is to combine multiple drones into an integrated autonomous system, offering functionality that individual drones cannot achieve. Such multidrone systems require connectivity, communication, and coordination. We discuss these building blocks along with case studies and lessons learned.

By Bernhard Rinner, Christian Bettstetter, Hermann Hellwagner, and Stephan Weiss (University of Klagenfurt)

Download open access.


Sandsbots:
Robots that sync and swarm

We give a proof of concept for a multi-robot system that forms emergent space-time patterns. The solution is inspired by the theory of swarmalators, in which swarming and synchronization influence each other.

By Agata Barciś and Christian Bettstetter (University of Klagenfurt)

Watch video. Download open access.

Preprints and Early Access

Florian Posch, Aymen Fakhreddine, Enrique Caballero, and Christian Bettstetter. A Classifier for Aerial Devices in 5G Networks. In Proc. IEEE GLOBECOM Workshop on Cellular UAV and Satellite Communications, Kuala Lumpur, Malaysia, December 2023.

Arke Vogell, Udo Schilcher, Jorge F. Schmidt, and Christian Bettstetter. Chimera States in Pulse-Coupled Oscillator Systems. Manuscript under review.

Udo Schilcher, Siddhartha S. Borkotoky, Jorge F. Schmidt, Stavros Toumpis, and Christian Bettstetter. On the Effect of Retransmissions in Single-Cell Slotted Aloha LPWANs. Accepted for IEEE Vehicular Technology Conf., Singapore, June 24–27, 2024.

Micha Sende, Christian Raffelsberger, and Christian Bettstetter. Bridging the Reality Gap in Drone Swarm Development through Mixed Reality. Manuscript under review.

Published

Udo Schilcher, Christoph W. Rauter, and Christian Bettstetter. Radii of Emergent Patterns in Swarmalator Systems. In Proc. IEEE Intern. Conf. on Autonomic Computing and Self-Organizing Systems (ACSOS), Toronto, Canada, September 25–29, 2023. Short paper. Download author’s version or IEEE version.

Jorge F. Schmidt, Udo Schilcher, Arke Vogell, and Christian Bettstetter. Using Randomization in Self-Organized Synchronization for Wireless Networks. ACM Transactions on Autonomous and Adaptive Systems, vol. 18, no. 3, article 9, September 2023. Open access. Download ACM version.

Enrique Caballero, Aymen Fakhreddine, and Christian Bettstetter. Interference by Drones to 5G Ground Users: A Simulation Study. In Proc. ACM Workshop on Micro Aerial Vehicle Networks, Systems, and Applications (DroNet), Helsinki, Finland, June 18, 2023. Open access. Download ACM version.

Mahin K. Atiq, Udo Schilcher, Xhemal Pengili, Martin Haenggi, and Christian Bettstetter. Burstiness of Interference Pikes in Wireless Networks. IEEE Open Journal of Vehicular Technology, vol. 4, pp. 293–309, 2023. Open access. Download IEEE version.

Aymen Fakhreddine, Christian Raffelsberger, Micha Sende, and Christian Bettstetter. Experiments on Drone-to-Drone Communication with Wi-Fi, LTE-A, and 5G. In Proc. IEEE GLOBECOM Workshop on Cellular UAV and Satellite Communications, Rio de Janeiro, Brazil, December 4, 2022.

Daniel Neuhold, Aymen Fakhreddine, and Christian Bettstetter. HiPR+: A Protocol for Centimeter 3D Localization based on UWB. In Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Montreal, Canada, October 24–28, 2022. Open access. Download ACM version.

Arke Vogell, Udo Schilcher, Jorge F. Schmidt, and Christian Bettstetter. Of Diamonds, Rings, and Bracelets: Local Values of the Response Parameter can Increase the Synchronization Probability in Pulse-Coupled Oscillators. In Proc. IEEE Intern. Conf. on Autonomic Computing and Self-Organizing Systems (ACSOS), Online, September 19–23, 2022. Short paper. Download author’s preprint. Watch presentation.

Best paper award

Udo Schilcher, Jorge F. Schmidt, Arke Vogell, and Christian Bettstetter. Swarmalators with Stochastic Coupling and Memory. In Proc. IEEE Intern. Conf. on Autonomic Computing and Self-Organizing Systems (ACSOS), Washington, DC (online), September 27 – October 1, 2021. Received best paper award. Download author’s version.

Jorge F. Schmidt, Udo Schilcher, Arke Vogell, and Christian Bettstetter. Stochastic Switching of Power Levels can Accelerate Self-Organized Synchronization in Wireless Networks with Interference. In Proc. IEEE Intern. Conf. on Autonomic Computing and Self-Organizing Systems (ACSOS), Washington, DC (online), September 27 – October 1, 2021. Download author’s version.

Bernhard Rinner, Christian Bettstetter, Hermann Hellwagner, and Stephan Weiss. Multidrone Systems: More Than the Sum of the Parts. IEEE Computer, vol. 54, no. 5, pp. 34–43, May 2021. Open access. Download IEEE version.

Antonia Stornig, Aymen Fakhreddine, Hermann Hellwagner, Petar Popovski, and Christian Bettstetter. Video Quality and Latency for UAV Teleoperation over LTE: A Study with ns3. In Proc. IEEE Vehicular Technology Conf. (VTC), online conference, April 25–28, 2021.

Jorge F. Schmidt, Daniel Neuhold, Christian Bettstetter, Jirka Klaue, and Dominic Schupke. Wireless Connectivity in Airplanes: Challenges and the Case for UWB. IEEE Access, vol. 9, pp. 52913–52925, April 2021. Open access. Download IEEE version.

Samira Hayat, Hermann Hellwagner, Roland Jung, Christian Bettstetter, Driton Emini, and Dominik Schnieders. Edge Computing in 5G for Drone Navigation: What to Offload? IEEE Robotics and Automation Letters, vol. 6, no. 2, pp. 2571–2578, April 2021. Also presented at IEEE Intern. Conf. on Robotics and Automation (ICRA), Xi’an, China, May 30 – June 5, 2021.

Jorge F. Schmidt, Udo Schilcher, Mahin K. Atiq, and Christian Bettstetter. Interference Prediction in Wireless Networks: Stochastic Geometry meets Recursive Filtering. IEEE Transactions on Vehicular Technology, vol. 70, no. 3, pp. 2783–2793, March 2021. Open access. Download IEEE version.

Jessica Breitegger, Christian Raffelsberger, Siddhartha Borkotoky, Ingomar Rogler, and Christian Bettstetter. Long-Term LoRa Experiments in a Chemical Plant. In Proc. IEEE Intern. Conf. on Industrial Technology (ICIT), online conference, March 10–12, 2021. Download author’s version.

Arke Vogell, Udo Schilcher, and Christian Bettstetter. Deadlocks in the Synchronization of Pulse-Coupled Oscillators on Star Graphs. Physical Review E, vol. 102, no. 6, article 062211, December 2020. Open access. Download APS version.

We present a multirobot system that forms emergent space-time patterns.

Agata Barciś and Christian Bettstetter. Sandsbots: Robots that Sync and Swarm. IEEE Access, vol. 8, pp. 218752–218764, December 2020. Open access. Download IEEE version.

Samira Hayat, Evşen Yanmaz, Christian Bettstetter, and Timothy X Brown. Multi-Objective Drone Path Planning for Search and Rescue with Quality-of-Service Requirements. Autonomous Robots, vol. 44, no. 7, pp. 1183–1198, September 2020. Open access. Download Springer version.

Udo Schilcher, Jorge F. Schmidt, and Christian Bettstetter. On Interference Dynamics in Matérn Networks. IEEE Transactions on Mobile Computing, vol. 19, no. 7, pp. 1677–1688, July 2020. Open access. Download IEEE version.

Udo Schilcher, Jorge F. Schmidt, Mahin Atiq, and Christian Bettstetter. Autocorrelation and Coherence Time of Interference in Poisson Networks. IEEE Transactions on Mobile Computing, vol. 19, no. 7, pp. 1506–1518, July 2020. Open access. Download IEEE version.

Raheeb Muzaffar, Christian Raffelsberger, Aymen Fakhreddine, José López Luque, Driton Emini, and Christian Bettstetter. First Experiments with a 5G-Connected Drone. In Proc. ACM Workshop on Micro Aerial Vehicle Networks, Systems, and Applications (DroNet), Toronto, Canada (online), June 19, 2020. Download arXiv preprint.

Udo Schilcher, Siddhartha Borkotoky, Jorge F. Schmidt, and Christian Bettstetter. Outage Duration in Poisson Networks and its Application to Erasure Codes. In Proc. IEEE Intern. Conf. on Communications (ICC), Dublin, Ireland (online), June 7–11, 2020. Download arXiv preprint.

Jorge F. Schmidt, Denis Chernov, and Christian Bettstetter. Towards Industrial Ultra-Wideband Networks: Experiments for Machine Vibration Monitoring. IEEE Access, vol. 8, pp. 42576–583, March 2020. Open access. Download IEEE version.

Raheeb Muzaffar, Evşen Yanmaz, Christian Raffelsberger, Christian Bettstetter, and Andrea Cavallaro. Live Multicast Video Streaming from Drones: An Experimental Study. Autonomous Robots, Special Issue on Robot Communication Challenges: Real-World Problems, Systems, and Methods, vol. 44, no. 1, pp. 75–91, January 2020. Open access. Download Springer version.

Siddhartha Borkotoky, Udo Schilcher, and Christian Bettstetter. Cooperative Relaying in LoRa Sensor Networks. In Proc. IEEE Global Communications Conf. (GLOBECOM), Waikoloa, HI, USA, December 9–13, 2019. Download arXiv preprint.

Daniel Neuhold, Christian Bettstetter, and Andreas F. Molisch. HiPR: High-Precision UWB Ranging for Sensor Networks. In Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Miami Beach, FL, USA, November 25–29, 2019. Download ACM version.

Mahin K. Atiq, Udo Schilcher, and Christian Bettstetter. On Interference Pikes in Poisson Networks. In Proc. European Signal Processing Conf. (EUSIPCO), A Coruña, Spain, September 2–6, 2019. Download author’s version.

Christian Raffelsberger, Raheeb Muzaffar, and Christian Bettstetter. A Performance Evaluation Tool for Drone Communications in 4G Cellular Networks. In Proc. Intern. Symp. on Wireless Communication Systems (ISWCS), Oulo, Finland, August 27–30, 2019. Invited paper. Download arXiv preprint.

Agata Barciś, Michał Barciś, and Christian Bettstetter. Robots that Sync and Swarm: A Proof of Concept in ROS 2. In Proc. IEEE Intern. Symp. on Multi-Robot and Multi-Agent Systems (MRS), New Brunswick, NJ, USA, August 22–23, 2019. Download arXiv preprint and watch videos.

Aymen Fakhreddine, Christian Bettstetter, Samira Hayat, Raheeb Muzaffar, and Driton Emini. Handover Challenges for Cellular-Connected Drones. In Proc. ACM Workshop on Micro Aerial Vehicle Networks, Systems, and Applications (DroNet), Seoul, Korea, June 21, 2019. Download author’s version or ACM version.

Samira Hayat, Christian Bettstetter, Aymen Fakhreddine, Raheeb Muzaffar, and Driton Emini. An Experimental Evaluation of LTE-A Throughput for Drones. In Proc. ACM Workshop on Micro Aerial Vehicle Networks, Systems, and Applications (DroNet), Seoul, Korea, June 21, 2019. Download ACM version.

Best paper award

Agata Barciś and Christian Bettstetter. Beyond Sync: Distributed Temporal Coordination and Its Implementation in a Multi-Robot System. In Proc. IEEE Intern. Conf. on Self-Adaptive and Self-Organizing Systems (SASO), Umeå, Sweden, June 16–20, 2019. Received best paper award. Download author’s version.

Pasquale Grippa, Udo Schilcher, and Christian Bettstetter. On Access Control in Cabin-Based Transport Systems. IEEE Transactions on Intelligent Transportation Systems, vol. 20, no. 6, pp. 2149–2156, June 2019. Download arXiv preprint.

Daniel Neuhold, Jorge F. Schmidt, Christian Bettstetter, Johannes Sebald, and Jirka Klaue. UWB Connectivity Inside a Space Launch Vehicle. In Proc. European Wireless, Aarhus, Denmark, May 2–4, 2019. Download author’s version.

Siddhartha Borkotoky, Christian Bettstetter, Udo Schilcher, and Christian Raffelsberger. Allocation of Repetition Redundancy in LoRa. In Proc. European Wireless, Aarhus, Denmark, May 2–4, 2019. Download arXiv preprint.

Jorge F. Schmidt, Denis Chernov, Manfred Pauritsch, and Christian Bettstetter. Study of a Self-Powered UWB Sensor Network for Industrial Applications. In Proc. European Wireless, Aarhus, Denmark, May 2–4, 2019. Download preprint.

Kevin O’Keeffe and Christian Bettstetter. A Review of Swarmalators and Their Potential in Bio-Inspired Computing. In Proc. SPIE Micro- and Nanotechnology Sensors, Systems, and Applications XI, vol. 10982, paper 109822E, Baltimore, MD, USA, April 14–18, 2019. Invited paper. Download SPIE version or arXiv preprint.

Ursula Challita, Walid Saad, and Christian Bettstetter. Interference Management for Cellular-Connected UAVs: A Deep Reinforcement Learning Approach. IEEE Transactions on Wireless Communications, vol. 18, no. 4, pp. 2125–2140, April 2019.

We dimension and control a fleet of delivery drones.

Pasquale Grippa, Doris A. Behrens, Friederike Wall, and Christian Bettstetter. Drone Delivery Systems: Job Assignment and Dimensioning. Autonomous Robots, Special Issue on Robotics: Science and Systems (RSS), vol. 43, no. 2, pp. 261–274, February 2019. Open access. Download Springer version.

Pasquale Grippa, Evşen Yanmaz, Paul Ladinig, and Christian Bettstetter. Guarded by Gamora: How Access Control Balances Out Waiting Times in Transport Systems. In Proc. IEEE Intern. Conf. on Intelligent Transportation Systems (ITSC), Maui, Hawaii, USA, November 4–7, 2018. ​Download arXiv preprint.

Ursula Challita, Walid Saad, and Christian Bettstetter. Deep Reinforcement Learning for Interference-Aware Path Planning of Cellular-Connected UAVs. In Proc. IEEE Intern. Conf. on Communications (ICC), Kansas City, MO, USA, May 20–24, 2018. Download author’s version.

Jorge F. Schmidt, Daniel Neuhold, Jirka Klaue, Dominic Schupke, and Christian Bettstetter. Experimental Study of UWB Connectivity in Industrial Environments. In Proc. European Wireless, Catania, Italy, May 2–4, 2018. Download author’s version.

Evşen Yanmaz, Saeed Yahyanejad, Bernhard Rinner, Hermann Hellwagner, and Christian Bettstetter. Drone Networks: Communications, Coordination, and Sensing. Ad Hoc Networks, Special Issue on Advances in Wireless Communication and Networking for Cooperating Autonomous Systems, vol. 68, pp. 1–15, January 2018. Download preprint.

Daniel Neuhold, Jorge F. Schmidt, Jirka Klaue, Dominic Schupke, and Christian Bettstetter. Experimental Study of Packet Loss in a UWB Sensor Network for Aircraft. In Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Miami Beach, FL, USA, November 21–25, 2017. Received best paper award. Open access. Download ACM version.

Mahin K. Atiq, Udo Schilcher, Jorge F. Schmidt, and Christian Bettstetter. Semi-Blind Interference Prediction in Wireless Networks. In Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Miami Beach, FL, USA, November 21–25, 2017. Open access. Download ACM version.

Micha Rappaport and Christian Bettstetter. Coordinated Recharging of Mobile Robots during Exploration. In Proc. IEEE/RSJ Intern. Conf. on Intelligent Robots and Systems (IROS), Vancouver, Canada, September 24–28, 2017.

Pasquale Grippa, Doris A. Behrens, Christian Bettstetter, and Friederike Wall. Job Selection in a Network of Autonomous UAVs for Delivery of Goods. In Proc. Robotics: Science and Systems (RSS), Cambridge, MA, USA, July 12–16, 2017. Open access.

Samira Hayat, Evşen Yanmaz, Timothy X Brown, and Christian Bettstetter. Multi-Objective UAV Path Planning for Search and Rescue. In Proc. IEEE Intern. Conf. on Robotics and Automation (ICRA), Marina Bay, Singapore, May 29 – June 3, 2017.

Wasif Masood, Jorge F. Schmidt, Günther Brandner, and Christian Bettstetter. DISTY: Dynamic Stochastic Time Synchronization for Wireless Sensor Networks. IEEE Transactions on Industrial Informatics, vol. 13, no. 3, pp. 1421–1429, May 2017.

We proposed coupling rules for networked oscillators and proved that synchronization emerges.

Johannes Klinglmayr, Christian Bettstetter, Marc Timme, and Christoph Kirst. Convergence of Self-Organizing Pulse Coupled Oscillator Synchronization in Dynamic Networks. IEEE Transactions on Automatic Control, vol. 62, no. 4, pp. 1606–1619, April 2017.

Udo Schilcher, Günther Brandner, and Christian Bettstetter. Quantifying Inhomogeneity of Spatial Point Patterns. Computer Networks, vol. 115, pp. 65–81, March 2017. Open access.

Jorge F. Schmidt, Udo Schilcher, and Christian Bettstetter. Exact Bit Error Rate Expressions for Interference-Limited Poisson Networks. IET Electronics Letters, vol. 52, no. 23, pp. 1961–1963, November 2016. Open access.

Raheeb Muzaffar, Evşen Yanmaz, Christian Bettstetter, and Andrea Cavallaro. Application-Layer Rate-Adaptive Multicast Video Streaming over 802.11 for Mobile Devices. In Proc. ACM Multimedia Conf., Amsterdam, The Netherlands, October 15–19, 2016. Download ACM version.

Evşen Yanmaz, Markus Quaritsch, Saeed Yahyanejad, Bernhard Rinner, Hermann Hellwagner, and Christian Bettstetter. Communication and Coordination for Drone Networks. In Proc. EAI Intern. Conf. on Ad Hoc Networks (AdHocNets), Ottawa, Canada, September 26–27, 2016. Invited paper.

Jorge F. Schmidt, Mahin K. Atiq, Udo Schilcher, and Christian Bettstetter. Encouraging Device-to-Device Communications to Improve Energy Efficiency in Cellular Systems. In Proc. IEEE Vehicular Technology Conf. (VTC), Nanjing, China, May 15–18, 2016.

Torsten Andre and Christian Bettstetter. Collaboration in Multi-Robot Exploration: To Meet or Not to Meet? Journal of Intelligent & Robotic Systems, vol. 82, no. 2, pp. 325–337, May 2016.

Daniel Neuhold, Jorge F. Schmidt, Christian Bettstetter, Jirka Klaue, and Dominic Schupke. Experiments with UWB Aircraft Sensor Networks. In Proc. IEEE INFOCOM Workshops, San Francisco, CA, April 10–15, 2016.

Günther Brandner, Udo Schilcher, and Christian Bettstetter. Firefly Synchronization with Phase Rate Equalization and its Experimental Analysis in Wireless Systems. Computer Networks, vol. 97, pp. 74–87, March 2016. Open access.

Udo Schilcher, Stavros Toumpis, Martin Haenggi, Alessandro Crismani, Günther Brandner, and Christian Bettstetter. Interference Functionals in Poisson Networks. IEEE Transactions on Information Theory, vol. 62, no. 1, pp. 370–383, January 2016. Open access. Download IEEE version.

Alessandro Crismani, Stavros Toumpis, Udo Schilcher, Günther Brandner, and Christian Bettstetter. Cooperative Relaying under Spatially and Temporally Correlated Interference. IEEE Transactions on Vehicular Technology, vol. 64, no. 10, pp. 4655–4669, October 2015. Open access. Download IEEE version.

Alexander Gogolev, Nikolaj Marchenko, Lucio Marcenaro, and Christian Bettstetter. Distributed Binary Consensus in Networks with Disturbances. ACM Transactions on Autonomous and Adaptive Systems, vol. 10, no. 3, article 19, September 2015. Download ACM version.

Samira Hayat, Evşen Yanmaz, and Christian Bettstetter. Experimental Analysis of Multipoint-to-Point UAV Communications with 802.11n and 802.11ac. In Proc. IEEE Intern. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC), Hong Kong, August 30 – September 2, 2015.

Jorge F. Schmidt, Mahin K. Atiq, Udo Schilcher, and Christian Bettstetter. Underlay Device-to-Device Communications in LTE-A: Uplink or Downlink? In Proc. IEEE Intern. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC), Hong Kong, August 30 – September 2, 2015.

Torsten Andre, Premkumar Arumugam, and Christian Bettstetter. Experimental Evaluation of Multihop-Aware Cooperative Relaying. In Proc. Intern. Workshop on Wireless Network Measurements and Experimentation (WINMEE), IIT Bombay, India, May 25, 2015.

Jürgen Scherer, Saeed Yahyanejad, Samira Hayat, Evşen Yanmaz, Torsten Andre, Asif Khan, Vladimir Vukadinovic, Christian Bettstetter, Hermann Hellwagner, and Bernhard Rinner. An Autonomous Multi-UAV System for Search and Rescue. In Proc. Workshop on Micro Aerial Vehicle Networks, Systems, and Applications for Civilian Use (DroNet), Florence, Italy, May 18, 2015. Download ACM version.

Günther Brandner, Johannes Klinglmayr, Dominik Egarter, Udo Schilcher, and Christian Bettstetter. Precision of Pulse-Coupled Oscillator Synchronization on FPGA-Based Radios. In Proc. Intern. ITG Conf. on Systems, Communications, and Coding (SCC), Hamburg, Germany, February 2–5, 2015. Download arXiv preprint.

Torsten Andre, Daniel Neuhold, and Christian Bettstetter. Coordinated Multi-Robot Exploration: Out of the Box Packages for ROS. In Proc. Intern. Workshop on Wireless Networking and Control for Unmanned Autonomous Vehicles (Wi-UAV), Austin, TX, USA, December 12, 2014. Download author’s version.

Wasif Masood, Johannes Klinglmayr, and Christian Bettstetter. Experimental Evaluation of Pulse-Coupled Oscillator Synchronization in 802.15.4 Networks. In Proc. Workshops of ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Montreal, Canada, September 21–26, 2014. Download ACM version.

Helmut Adam, Evşen Yanmaz, and Christian Bettstetter. Medium Access with Adaptive Relay Selection in Cooperative Wireless Networks. IEEE Transactions on Mobile Computing, vol. 13, no. 9, pp. 2042–2057, September 2014. Open access. Download IEEE version.

We implemented relaying protocols in IEEE 802.15.4 and evaluated them in a factory.

Nikolaj Marchenko, Torsten Andre, Günther Brandner, Wasif Masood, and Christian Bettstetter. An Experimental Study of Selective Cooperative Relaying in Industrial Wireless Sensor Networks. IEEE Transactions on Industrial Informatics, vol. 10, no. 3, pp. 1806–1816, August 2014.

Alessandro Crismani, Udo Schilcher, Stavros Toumpis, Günther Brandner, and Christian Bettstetter. Packet Travel Times in Wireless Relay Chains under Spatially and Temporally Dependent Interference. In Proc. IEEE International Conf. on Communications (ICC), Sydney, Australia, June 10–14, 2014. Download arXiv preprint.

Micha Rappaport, Evşen Yanmaz, and Christian Bettstetter. Neighbor Cardinality Estimation with Low-Power Transceivers: Implementation and Experimental Results. In Proc. IEEE Vehicular Technology Conf. (VTC), Seoul, Korea, May 18–21, 2014. Download author’s version.

Torsten Andre, Karin A. Hummel, Angela P. Schoellig, Evşen Yanmaz, Mahdi Asadpour, Christian Bettstetter, Pasquale Grippa, Hermann Hellwagner, Stephan Sand, Siwei Zhang. Application-Driven Design of Aerial Communication Networks. IEEE Communications Magazine, vol. 52, no. 5, pp. 129–137, May 2014.

Evşen Yanmaz, Samira Hayat, Jürgen Scherer, and Christian Bettstetter. Experimental Performance Analysis of Two-Hop Aerial 802.11 Networks. In Proc. IEEE Wireless Communications and Networking Conf. (WCNC), Istanbul, Turkey, April 6–9, 2014. Download author’s version.

Nikolaj Marchenko and Christian Bettstetter. Cooperative ARQ with Relay Selection: An Analytical Framework Using Semi-Markov Processes. IEEE Transactions on Vehicular Technology, vol. 63, no. 1, pp. 178–190, January 2014.

Udo Schilcher, Stavros Toumpis, Alessandro Crismani, Günther Brandner, and Christian Bettstetter. How Does Interference Dynamics Influence Packet Delivery in Cooperative Relaying? In Proc. ACM/IEEE Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), Barcelona, Spain, November 3–8, 2013. Download ACM version.

Torsten Andre and Christian Bettstetter. Assessing the Value of Coordination in Mobile Robot Exploration using a Discrete-Time Markov Process. In Proc. IEEE/RSJ Intern. Conf. on Intelligent Robots and Systems (IROS), Tokyo, Japan, November 3–7, 2013. Download author’s version.

Günther Brandner, Christian Bettstetter, and Udo Schilcher. Contention-Based Node Selection with Applications to Relay Communications and Load Balancing. EURASIP Journal on Wireless Communications and Networking, article 211, August 2013. Open access.

Torsten Andre, Nikolaj Marchenko, Günther Brandner, Wasif Masood, and Christian Bettstetter. Measurement-Based Analysis of Adaptive Relay Selection in Industrial Wireless Sensor Networks. In Proc. Intern. Workshop on Wireless Network Measurements (WINMEE), Tsukuba, Japan, May 13, 2013. Download author’s version.

We propose an antenna setup for quadrocopters using 802.11 and evaluate it with experiments.

Evşen Yanmaz, Robert Kuschnig, and Christian Bettstetter. Achieving Air-Ground Communications in 802.11 Networks with Three-Dimensional Aerial Mobility. In Proc. IEEE Intern. Conf. on Computer Communications (INFOCOM), Turin, Italy, April 14–19, 2013. Download author’s version.

Helmut Adam, Evşen Yanmaz, and Christian Bettstetter. Contention-Based Estimation of Neighbor Cardinality. IEEE Transactions on Mobile Computing, vol. 12, no. 3, pp. 542–555, March 2013.

Udo Schilcher, Günther Brandner, and Christian Bettstetter. Temporal Correlation of Interference: Cases with Correlated Traffic. In Proc. Intern. ITG Conf. on Systems, Communications, and Coding (SCC), Munich, Germany, January 21–24, 2013.

Torsten Andre, Günther Brandner, Nikolaj Marchenko, and Christian Bettstetter. Measurement-Based Analysis of Cooperative Relaying in an Industrial Wireless Sensor Network. In Proc. IEEE Global Communications Conf. (GLOBECOM), Anaheim, CA, USA, December 3–7, 2012. Download author’s version.

We derived the correlation of interference in stochastic wireless networks.

Udo Schilcher, Christian Bettstetter, and Günther Brandner. Temporal Correlation of Interference in Wireless Networks with Rayleigh Block Fading. IEEE Transactions on Mobile Computing, vol. 11, no. 12, pp. 2109–2120, December 2012.

Johannes Klinglmayr and Christian Bettstetter. Self-Organizing Synchronization with Inhibitory-Coupled Oscillators: Convergence and Robustness. ACM Transactions on Autonomous and Adaptive Systems, vol. 7, no. 3, article 30, September 2012. Download ACM version.

Johannes Klinglmayr, Christoph Kirst, Christian Bettstetter, and Marc Timme. Guaranteeing Global Synchronization in Networks with Stochastic Interactions. New Journal of Physics, vol. 14, no. 073031, July 2012. Open access.

Günther Brandner, Udo Schilcher, Torsten Andre, and Christian Bettstetter. Packet Delivery Performance of Simple Cooperative Relaying in Real-World Car-to-Car Communications. IEEE Wireless Communications Letters, vol. 1, no. 3, pp. 237–240, June 2012.

Alexander Gogolev and Christian Bettstetter. Robustness of Self-Organizing Consensus Algorithms: Initial Results from a Simulation-Based Study. In Proc. Intern. Workshop on Self-Organizing Systems (IWSOS), Delft, Netherlands, March 15–16, 2012.

Sérgio Crisóstomo, Udo Schilcher, Christian Bettstetter, and João Barros. Probabilistic Flooding in Stochastic Networks: Analysis of Global Information Outreach. Computer Networks, vol. 56, no. 1, pp. 142–156, January 2012.

Evşen Yanmaz, Robert Kuschnig, and Christian Bettstetter. Channel Measurements over 802.11a-based UAV-to-Ground Links. In Proc. Intern. Workshop on Wireless Networking for Unmanned Autonomous Vehicles (Wi-UAV), Houston, TX, USA, December 5, 2011. Download author’s version.

Nikolaj Marchenko and Christian Bettstetter. Impact of Relay Selection Overhead in Cooperative Diversity Protocols. In Proc. IEEE Vehicular Technology Conf. (VTC), San Francisco, CA, USA, September 5–8, 2011. Download author’s version.

Nikolaj Marchenko and Christian Bettstetter. Throughput and Energy Efficiency of Cooperative Diversity with Relay Selection. In Proc. European Wireless, Vienna, Austria, April 27–29, 2011. Download author’s version.

Evşen Yanmaz, Robert Kuschnig, Markus Quaritsch, Christian Bettstetter, and Bernhard Rinner. On Path Planning Strategies for Networked Unmanned Aerial Vehicles. In Proc. IEEE INFOCOM Workshop on Machine-to-Machine Commun. Netw., Shanghai, China, April 15, 2011. Download open access.

Udo Schilcher, Günther Brandner, and Christian Bettstetter. Diversity Schemes in Interference-Limited Wireless Networks with Low-Cost Radios. In Proc. IEEE Wireless Communications and Networking Conf. (WCNC), Cancun, Mexico, March 28–31, 2011. Download author’s version.

Nikolaj Marchenko, Christian Bettstetter, and Wilfried Elmenreich. Incremental Cooperative Relaying in Time-Correlated Rayleigh Fading Channels. In Proc. IEEE Global Communications Conf. (GLOBECOM), Miami, FL, USA, December 6–10, 2010. Download author’s version.

Evşen Yanmaz, Carmelo Costanzo, Christian Bettstetter, and Wilfried Elmenreich. A Discrete Stochastic Process for Coverage Analysis of Autonomous UAV Networks. In Proc. Intern. Workshop on Wireless Networking for UAVs (Wi-UAV), Miami, FL, USA, December 6, 2010.

Johannes Klinglmayr and Christian Bettstetter. Synchronization of Inhibitory Pulse-Coupled Oscillators in Delayed Random and Line Networks. In Proc. Intern. Symp. on Applied Sciences in Biomedical and Communication Technologies (ISABEL), Rome, Italy, November 7–10, 2010. Invited paper.

Robert Leidenfrost, Wilfried Elmenreich, and Christian Bettstetter. Fault-Tolerant Averaging for Self-Organizing Synchronization in Wireless Ad Hoc Networks. In Proc. Intern. Symp. on Wireless Communication Systems (ISWCS), York, UK, September 19–22, 2010. Download author’s version.

Nikolaj Marchenko and Christian Bettstetter. Cooperative Multicast with Low-Cost Radios. In Proc. IEEE Vehicular Technology Conf. (VTC), Ottawa, Canada, September 6–9, 2010. Download author’s version.

Alexander Tyrrell, Gunther Auer, Christian Bettstetter, and Rahul Naripella. How Does a Faulty Node Disturb Decentralized Slot Synchronization over Wireless Networks? In Proc. IEEE Intern. Conf. on Communications (ICC), Cape Town, South Africa, May 23–27, 2010. Download author’s version.

Christian Bettstetter, Johannes Klinglmayr, and Stefan Lettner. On the Degree Distribution of k-Connected Random Networks. In Proc. IEEE Intern. Conf. on Communications (ICC), Cape Town, South Africa, May 23–27, 2010. Download author’s version.

Helmut Adam, Evşen Yanmaz, Wilfried Elmenreich, and Christian Bettstetter. Contention-Based Neighborhood Estimation. In Proc. IEEE Vehicular Technology Conf. (VTC), Taipei, Taiwan, May 16–19, 2010. Download author’s version.

Evşen Yanmaz and Christian Bettstetter. Area Coverage with Unmanned Vehicles: A Belief-Based Approach. In Proc. IEEE Vehicular Technology Conf. (VTC), Taipei, Taiwan, May 16–19, 2010. Download author’s version.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. Emergent Slot Synchronization in Wireless Networks. IEEE Transactions on Mobile Computing, vol. 9, no. 5, pp. 719–732, May 2010.

Günther Brandner, Udo Schilcher, and Christian Bettstetter. Cooperative Relaying in Car-to-Car Communications: Initial Results from an Experimental Study. In Proc. IEEE Intern. Symp. on Communications, Control and Signal Processing (ISCCSP), Limassol, Cyprus, March 3–5, 2010. Invited paper.

Wilfried Elmenreich, Raissa D’Souza, Christian Bettstetter, and Hermann de Meer. A Survey of Models and Design Methods for Self-Organizing Networked Systems. In Proc. Intern. Workshop on Self-Organizing Systems (IWSOS), Lecture Notes in Computer Science, Springer, Zürich, Switzerland, December 9–11, 2009. Invited paper.

Helmut Adam, Wilfried Elmenreich, Christian Bettstetter, and Sidi Mohammed Senouci. CoRe-MAC: A MAC-Protocol for Cooperative Relaying in Wireless Networks. In Proc. IEEE Global Communications Conf. (GLOBECOM), Honolulu, Hawaii, November 30 – December 4, 2009. Download author’s version.

Nikolaj Marchenko, Evşen Yanmaz, Helmut Adam, and Christian Bettstetter. Selecting a Spatially Efficient Cooperative Relay. In Proc. IEEE Global Communications Conf. (GLOBECOM), Honolulu, Hawaii, November 30 – December 4, 2009. Download author’s version.

Johannes Klinglmayr, Christian Bettstetter, and Marc Timme. Globally Stable Synchronization by Inhibitory Pulse Coupling. In Proc. Intern. Symp. on Applied Sciences in Biomedical and Communication Technologies (ISABEL), Bratislava, Slovak Republic, November 24 – 27, 2009. Invited paper. Download author’s version.

Sérgio Crisóstomo, Udo Schilcher, Christian Bettstetter, and João Barros. Analysis of Probabilistic Flooding: How do we Choose the Right Coin? In Proc. IEEE Intern. Conf. on Communications (ICC), Dresden, Germany, June 14–18, 2009. Download author’s version.

Nikolaj Marchenko, Christian Bettstetter, and Evşen Yanmaz. On Radio Resource Allocation in Proactive Cooperative Relaying. In Proc. IEEE Workshop on Cooperative Mobile Networks (CoCoNet), Dresden, Germany, June 14, 2009. Download author’s version.

Günther Brandner, Udo Schilcher, Michael Gyarmati, and Christian Bettstetter. Non-Colliding First Messages in Slotted ALOHA: Further Insights Toward a Practical Solution. In Proc. IEEE Vehicular Technology Conf. (VTC), Barcelona, Spain, April 26–29, 2009. Download author’s version.

Helmut Adam, Christian Bettstetter, and Sidi Mohammed Senouci. Multi-Hop-Aware Cooperative Relaying. In Proc. IEEE Vehicular Technology Conf. (VTC), Barcelona, Spain, April 26–29, 2009. Received best student paper award. Download author’s version.

Jörg Eberspächer, Hans-Jörg Vögel, Christian Bettstetter, and Christian Hartmann. GSM — Architecture, Protocols, and Services. Wiley, 3rd edition, January 2009.

Richard Holzer, Hermann de Meer, and Christian Bettstetter. On Autonomy and Emergence in Self-Organizing Systems. In Proc. Intern. Workshop on Self-Organizing Systems (IWSOS), Vienna, Austria, Lecture Notes in Computer Science, Springer, December 10–12, 2008. Invited paper.

Michael Gyarmati, Udo Schilcher, Günther Brandner, Christian Bettstetter, Yun Won Chung, and Young Han Kim. Impact of Random Mobility on the Inhomogeneity of Spatial Distributions. In Proc. IEEE Global Communications Conf. (GLOBECOM), New Orleans, LA, USA, November 30 – December 4, 2008. Download author’s version.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. A Synchronization Metric for Meshed Networks of Pulse-Coupled Oscillators. In Proc. Intern. Conf. on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS), Hyogo, Japan, November 25–28, 2008. Download author’s version.

Sérgio Crisóstomo, João Barros, and Christian Bettstetter. Network Coding with Shortcuts. In Proc. IEEE Intern. Conf. on Communication Systems (ICCS), Guangzhou, China, November 19–21, 2008.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. On the Accuracy of Firefly Synchronization with Delays. In Proc. Intern. Symp. on Applied Sciences in Biomedical and Communication Technologies (ISABEL), Aalborg, Denmark, October 25–28, 2008. Received best student paper award. Download author’s version.

Wilfried Elmenreich, Nikolaj Marchenko, Helmut Adam, Christian Hofbauer, G¨nther Brandner, Christian Bettstetter, and Mario Huemer. Building Blocks of Cooperative Relaying in Wireless Systems. e & i Elektrotechnik und Informationstechnik, Special Issue on Networked Embedded Systems, Springer, vol. 126, no. 10, pp. 353–359, October 2008.

Markus Quaritsch, Emil Stojanovski, Christian Bettstetter, Gerhard Friedrich, Hermann Hellwagner, Bernhard Rinner, Michael Hofbaur, and Mubarak Shah. Collaborative Microdrones: Applications and Research Challenges. In Proc. Intern. Conf. on Autonomic Computing and Communication Systems (Autonomics), Turin, Italy, September 23–25, 2008. Invited paper.

PIMRC slides

Christian Bettstetter, Günther Brandner, and Robert Vilzmann. On Colliding First Messages in Slotted ALOHA. In Proc. IEEE Intern. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC), Cannes, France, September 15–18, 2008. Invited paper. Download author’s version.

Helmut Adam, Christian Bettstetter, and Sidi Mohammed Senouci. Adaptive Relay Selection in Cooperative Wireless Networks. In Proc. IEEE Intern. Symp. on Personal, Indoor and Mobile Radio Communications (PIMRC), Cannes, France, September 15–18, 2008. Download author’s version.

Sérgio Crisóstomo, João Barros, and Christian Bettstetter. Flooding the Network: Multipoint Relays versus Network Coding. In Proc. IEEE Intern. Conf. on Circuits and Systems for Communications (ICCSC), Shanghai, China, May 26–28, 2008. Download author’s version.

Udo Schilcher, Michael Gyarmati, Christian Bettstetter, Yun Won Chung, and Young Han Kim. Measuring Inhomogeneity in Spatial Distributions. In Proc. IEEE Vehicular Technology Conf. (VTC), Marina Bay, Singapore, May 11–14, 2008. Received best paper award. Download author’s version.

Christian Prehofer, Christian Bettstetter, and Jörg Widmer. Mobile Communication Networks. In Towards 4G Technologies: Services with Initiative (H. Berndt, ed.), ch. 2, pp. 17–50, Wiley, February 2008.

Christian Bettstetter, Michael Gyarmati, and Udo Schilcher. An Inhomogeneous Node Distribution and its Stochastic Properties. In Proc. ACM/IEEE Intern. Symp. on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM), Chania, Crete Island, Greece, pp. 400-404, October 22-26, 2007. Download ACM version.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. Biologically Inspired Synchronization for Wireless Networks. In Advances in Biologically Inspired Information Systems: Models, Methods, and Tools, Eds. Falko Dressler and Iacopo Carreras, in Series: Studies in Computational Intelligence, Springer, vol. 69, pp. 47–62, 2007.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. Fireflies as Role Models for Synchronization in Ad Hoc Networks. In Proc. Intern. Conf. on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS), Cavalese, Italy, December 11–13, 2006. Download ACM version or author’s version.

Emma Carlson, Christian Prehofer, Christian Bettstetter, Holger Karl, and Adam Wolisz. A Distributed End-to-End Reservation Protocol for IEEE 802.11-based Wireless Mesh Networks. IEEE Journal on Selected Areas in Communications (JSAC), Special Issue on Multi-Hop Wireless Mesh Networks, vol. 24, no. 11, pp. 2018–2027, November 2006.

Alexander Tyrrell, Gunther Auer, and Christian Bettstetter. Synchronization Inspired from Nature for Wireless Meshed Networks. In Proc. Intern. Conf. on Wireless Communications, Networking, and Mobile Computing, Wuhan, China, September 22–24, 2006. Download author’s version.

Amardeo Sarma, Christian Bettstetter, and Sudhir Dixit. Self-Organization in Communication Networks. In Technologies for the Wireless Future: Wireless World Research Forum (WWRF) (R. Tafazolli, ed.), vol. 2, ch. 9, pp. 423–452, Wiley, June 2006.

Philipp Hofmann, Koojana Kuladinithi, Andreas Timm-Giel, Carmelita Görg, Christian Bettstetter, François Capman, and Christian Toulsaly. Are IEEE 802 Wireless Technologies Suited for Fire Fighters?. In Proc. European Wireless, Athens, Greece, April 2–5, 2006. Download author’s version.

Philipp Hofmann, Christian Bettstetter, and Christian Prehofer. Performance Impact of Multihop Handovers in an IP-based Multihop Radio Access Network. ACM Mobile Computing and Communications Review, vol. 10, no. 2, pp. 13–25. April 2006. Download ACM version.

Robert Vilzmann, Christian Bettstetter, and Christian Hartmann. BeamMAC: A New Paradigm for Medium Access in Wireless Networks. International Journal of Electronics and Communications (AEÜ), vol. 60, no. 1, pp. 3–7, January 2006.

Robert Vilzmann, Christian Bettstetter, Daniel Medina, and Christian Hartmann. Hop Distances and Flooding in Wireless Multihop Networks with Randomized Beamforming. In Proc. ACM/IEEE Intern. Symp. on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM), Montreal, Canada, pp. 20-27, October 10–13, 2005. Download ACM version or author’s version.

Robert Vilzmann, Christian Bettstetter, and Christian Hartmann. On the Impact of Beamforming on Interference in Wireless Mesh Networks. In Proc. IEEE Workshop on Wireless Mesh Networks (WiMesh), Santa Clara, USA, September 26, 2005.

Christian Bettstetter and Christian Hartmann. Connectivity of Wireless Multihop Networks in a Shadow Fading Environment. ACM/Springer Wireless Networks, vol. 11, no. 5, pp. 571–579, September 2005.

Robert Vilzmann and Christian Bettstetter. A Survey on MAC Protocols for Ad Hoc Networks with Directional Antennas. In Proc. EUNICE Open European Summer School, Colmenarejo, Spain, pp. 268-274, July 6-8, 2005.

We discussed principles of self-organization in networks.

Christian Prehofer and Christian Bettstetter. Self-Organization in Communication Networks: Principles and Design Paradigms. IEEE Communications Magazine, Feature Topic on Advances in Self-Organizing Networks, vol. 43, no. 7, pp. 78–85, July 2005.

Christian Bettstetter, Christian Hartmann, and Clemens Moser. How Does Randomized Beamforming Improve the Connectivity of Ad Hoc Networks? In Proc. IEEE Intern. Conf. on Communications (ICC), Seoul, Korea, pp. 3380-85, May 16-20, 2005. Download author’s version.

Emma Carlson, Christian Bettstetter, Christian Prehofer, and Adam Wolisz. A Performance Comparison of QoS Approaches for Ad Hoc Networks: 802.11e versus Distributed Resource Allocation. In Proc. European Wireless, Nicosia, Cyprus, April 10-13, 2005.

Philipp Hofmann, Christian Bettstetter, Koojana Kuladinithi, Andreas Timm-Giel, Camelita Görg, Rifat Ok, and Zeynap Sarilar. Requirements of Wireless Communication for Wearable Computing at Work. In Proc. Intern. Forum on Applied Wearable Computing (IFAWC), Zürich, Switzerland, March 17-18, 2005.

Philipp Hofmann, Christian Bettstetter, Jeremie Wehren, Christian Prehofer. Performance Impact of Mobility in an Emulated IP-based Multihop Radio Access Network. In Proc. IEEE/IFIP Intern. Conf. on Mobile and Wireless Communication Networks (MWCN), Paris, France, October 25-27, 2004. Download author’s version.

Emma Carlson, Christian Bettstetter, Holger Karl, Christian Prehofer, and Adam Wolisz. Distributed Maintenance of Resource Reservation Paths in Multihop 802.11 Networks. In Proc. IEEE Vehicular Technology Conf. (VTC), Los Angeles, USA, September 26-29, 2004. Download author’s version.

Christian Bettstetter, Hannes Hartenstein, and Xavier Pérez-Costa. Stochastic Properties of the Random Waypoint Mobility Model. ACM/Kluwer Wireless Networks, Special Issue on Modeling and Analysis of Mobile Networks, vol. 10, no. 5, pp. 555-567, September 2004.

Christian Bettstetter. On the Connectivity of Ad Hoc Networks. The Computer Journal, Special Issue on Mobile and Pervasive Computing, vol. 47, no. 4, pp. 432–447, Oxford University Press, July 2004.

We analyzed the connectivity of a multihop network with shadow fading.

Christian Bettstetter. Failure-Resilient Ad Hoc and Sensor Networks in a Shadow Fading Environment. In Proc. IEEE/IFIP Intern. Conf. on Dependable Systems and Networks (DSN), Workshop on Dependability Issues in Wireless Ad Hoc Networks & Sensor Networks, Florence, Italy, June 29, 2004.

Christian Bettstetter. The Cluster Density of a Distributed Clustering Algorithm in Ad Hoc Networks. In Proc. IEEE Intern. Conf. on Communications (ICC), Paris, France, June 20-24, 2004. Download author’s version.

Xavier Peréz-Costa, Christian Bettstetter, and Hannes Hartenstein. Toward a Mobility Metric for Comparable and Reproducible Results in Ad Hoc Networks Research. ACM Mobile Computing and Communications Review, vol. 7, no. 4, pp. 58–60, October 2003. Download ACM version.

Christian Bettstetter and Christian Hartmann. Connectivity of Wireless Multihop Networks in a Shadow Fading Environment. In Proc. ACM Intern. Workshop on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM), San Diego, CA, USA, pp. 28-32, September 2003. Download ACM version.

We analyzed the node distribution of random waypoint mobility.

Christian Bettstetter, Giovanni Resta, and Paolo Santi. The Node Distribution of the Random Waypoint Mobility Model for Wireless Ad Hoc Networks. IEEE Transactions on Mobile Computing, vol. 2, no. 3, pp. 257–269, July-September 2003. Received the 2004 outstanding paper award from the German Society for Information Technology (“Preis der ITG“).

Christian Bettstetter. Topology Properties of Ad Hoc Networks with Random Waypoint Mobility. ACM Mobile Computing and Communications Review, vol. 7, no. 3, pp. 50–52, July 2003. Download ACM version.

Christian Bettstetter and Bastian Friedrich. Time and Message Complexities of the Generalized Distributed Mobility-Adaptive Clustering (GDMAC) Algorithm in Wireless Multihop Networks. In Proc. IEEE Vehicular Technology Conf. (VTC), Jeju, Korea, pp. 176-180, April 2003. Download author’s version.

Christian Bettstetter and Jörg Eberspächer. Hop Distances in Homogeneous Ad Hoc Networks. In Proc. IEEE Vehicular Technology Conf. (VTC), Jeju, Korea, pp. 2286-2290, April 2003.

Christian Bettstetter and Clemens Moser. Simulationsbasierte Konnektivitätsanalyse von gleich- und normalverteilten drahtlosen Sensornetzen. In Proc. ITG/GI Conf. on ‘Kommunikation in Verteilten Systemen’ (KiVS), Leipzig, Germany, pp. 307-318, February 2003.

Christian Bettstetter and Christian Hartmann. GSM Digital Cellular Communication System. In Encyclopedia of Telecommunications (J. G. Proakis, ed.), Wiley, December 2002.

Christian Bettstetter and Christian Hartmann. General Packet Radio Service (GPRS). In Encyclopedia of Telecommunications (J. G. Proakis, ed.), Wiley, December 2002.

Timo Kosch, Christian Schwingenschlögl, and Christian Bettstetter. Situative IP-basierte Fahrerinformationssysteme: Szenarien, Routing und prototypische Realisierung. In Proc. VDE Conf. ‘NetWorlds’, Dresden, Germany, October 2002.

Christian Bettstetter, Hannes Hartenstein, and Xavier Peréz-Costa. Stochastic Properties of the Random Waypoint Mobility Model: Epoch Length, Direction Distribution, and Cell Change Rate. In Proc. ACM Intern. Workshop on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM), Atlanta, GA, USA, pp. 7-14, September 2002. Download ACM version.

Christian Bettstetter. On the Connectivity of Wireless Multihop Networks with Homogeneous and Inhomogeneous Range Assignment. In Proc. IEEE Vehicular Technology Conf. (VTC), Vancouver, BC, Canada, pp. 1706-10, September 24-28, 2002. Download author’s version.

Christian Bettstetter and Johannes Zangl. How to Achieve a Connected Ad Hoc Network with Homogeneous Range Assignment: An Analytical Study with Consideration of Border Effects. In Proc. IEEE Intern. Conf. on Mobile and Wireless Communication Networks (MWCN), Stockholm, Sweden, pp. 125-129, September 9-11, 2002.

We transferred a theorem from geometric random graphs to ad hoc networks.

Christian Bettstetter. On the Minimum Node Degree and Connectivity of a Wireless Multihop Network. In Proc. ACM Intern. Symp. on Mobile Ad Hoc Networking and Computing (MobiHoc), Lausanne, Switzerland, pp. 80-91, June 9-11, 2002. Download ACM version.

Jin Xi and Christian Bettstetter. Wireless Multi-Hop Internet Access: Gateway Discovery, Routing, and Addressing. In Proc. Intern. Conf. on Third Generation Wireless and Beyond (3Gwireless), San Francisco, CA, USA, May 28-31, 2002.

We highlighted a pitfall in a commonly used mobility model.

Christian Bettstetter and Christian Wagner. The Spatial Node Distribution of the Random Waypoint Mobility Model. In Proc. German Workshop on Mobile Ad-Hoc Networks (WMAN), Ulm, Germany, GI Lecture Notes in Informatics, no. P-11, pp. 41-58, March 25-26, 2002.

Christian Bettstetter and Stefan König. On the Message and Time Complexity of a Distributed Mobility-Adaptive Clustering Algorithm in Wireless Ad Hoc Networks. In Proc. European Wireless, Florence, Italy, pp. 128-34, February 25-28, 2002.

Wolfgang Kellerer, Christian Bettstetter, Christian Schwingenschlögl, Peter Sties, Karl-Ernst Steinberg, and Hans-Jörg Vögel. (Auto) Mobile Communication in a Heterogeneous and Converged World. IEEE Personal Communications Magazine, Special Issue on European R&D on Fourth-Generation Mobile and Wireless IP Networks, vol. 8, no. 6, pp. 41–47, December 2001.

Joachim Hagenauer, João F. Barros, Christian Bettstetter, and Silke Jauck. Three Years of Experience with an International Graduate Program at TU München. In Educating the Engineer for the 21st Century (D. Weichert, B. Rauhut, and R. Schmidt, eds.), Kluwer Academic Publishers, November 2001.

Christian Bettstetter and Roland Krausser. Scenario-Based Stability Analysis of the Distributed Mobility-Adaptive Clustering (DMAC) Algorithm. In Proc. ACM Intern. Symp. on Mobile Ad Hoc Networking and Computing (MobiHoc), Long Beach, CA, USA, pp. 232-241, October 4-5, 2001. Download ACM version.

Marco Vettorello, Christian Bettstetter, and Christian Schwingenschlögl. Some Notes on Security in the Service Location Protocol Version 2 (SLPv2). In Proc. Workshop on Ad hoc Communications, held in conjunction with European Conf. on Computer Supported Cooperative Work (ECSCW), Bonn, Germany, September 16-20, 2001.

Eivind Jåsund, Christian Bettstetter, and Christian Schwingenschlögl. A Service Browser for the Service Location Protocol Version 2 (SLPv2) In Proc. EUNICE Open European Summer School and the IFIP Workshop on IP and ATM Traffic Management (WATM), Paris, France, September 3-5, 2001.

Christian Bettstetter and Oliver Krause. On Border Effects in Modeling and Simulation of Wireless Ad Hoc Networks. In Proc. IEEE Intern. Conf. on Mobile and Wireless Communication Networks (MWCN), Recife, Brazil, pp. 20-27, August 14-17, 2001.

Christian Bettstetter. Smooth is Better than Sharp: A Random Mobility Model for Simulation of Wireless Networks. In Proc. ACM Intern. Workshop on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM), Rome, Italy, July 2001. Download ACM version.

Christian Bettstetter. Mobility Modeling in Wireless Networks: Categorization, Smooth Movement, and Border Effects. ACM Mobile Computing and Communications Review, vol. 5, no. 3, pp. 55–67, July 2001. Download ACM version.

Jörg Eberspächer, Hans-Jörg Vögel, and Christian Bettstetter. GSM — Switching, Services, and Protocols. Wiley, 2nd edition, March 2001.

Christian Bettstetter and Jin Xi. Mobility Modeling and Analysis of Adaptive Clustering Algorithms in Ad Hoc Networks. In Proc. European Personal Mobile Communications Conf. (EPMCC), Vienna, Austria, February 19-22, 2001.

Christian Weiß, Christian Bettstetter, and Sven Riedel. Code Construction and Decoding of Parallel Concatenated Tail-Biting Codes. IEEE Transactions on Information Theory, vol. 47, no. 1, pp. 368–388, January 2001.

Jörg Eberspächer, Hans-Jörg Vögel, and Christian Bettstetter. GSM — Global System for Mobile Communication. Vermittlung, Dienste und Protokolle in digitalen Mobilfunknetzen. Teubner, 3rd edition, January 2001.

Christian Bettstetter and Christoph Renner. A Comparison of Service Discovery Protocols and Implementation of the Service Location Protocol. In Proc. EUNICE Open European Summer School, Twente, Netherlands, September 13-15, 2000.

Christian Bettstetter. Toward Internet-based Car Communications: On Some System Architecture and Protocol Aspects. In Proc. EUNICE Open European Summer School, Twente, Netherlands, September 13-15, 2000.

Christian Bettstetter, Anton Riedl, and Gerhard Geßler. Interoperation of Mobile IPv6 and Protocol Independent Multicast Dense Mode. In Proc. Workshop on Wireless Networks and Mobile Computing, held in conjunction with Intern. Conf. on Parallel Processing (ICPP), Toronto, Canada, pp. 531-539, August 2000. Download author’s version.

Christian Bettstetter, Hans-Jörg Vögel, and Jörg Eberspächer. GSM Phase 2+ General Packet Radio Service GPRS: Architecture, Protocols, and Air Interface. IEEE Communications Surveys, Special Issue on Packet Radio Networks, vol. 2, no. 3, pp. 2–14, Third Quarter 1999. Open access.

Christian Weiß, Christian Bettstetter, Sven Riedel, and Daniel J. Costello. Turbo Decoding with Tail-Biting Trellises. In Proc. URSI Intern. Symp. on Signals, Systems, and Electronics (ISSSE), Pisa, Italy, pp. 343-348, October 1998. Download author’s version.