This file was created by the TYPO3 extension bib --- Timezone: CET Creation date: 2023-03-23 Creation time: 02-06-06 --- Number of references 186 inproceedings 2023_pennekamp_benchmarking_comparison Lecture Notes in Computer Science 2023 6 real-world computing; trusted execution environments; homomorphic encryption; key performance indicators; benchmarking Springer Proceedings of the 35th International Conference on Advanced Information Systems Engineering (CAiSE '23), June 12-16, 2023, Zaragoza, Spain Zaragoza, Spain 35th International Conference on Advanced Information Systems Engineering (CAiSE '23) June 12-16, 2023 accepted 0302-9743 1 JanPennekamp JohannesLohmöller EduardVlad JoschaLoos NiklasRodemann PatrickSapel Ina BereniceFink SethSchmitz ChristianHopmann MatthiasJarke GüntherSchuh KlausWehrle MartinHenze inproceedings 2022-wireless-anycast Proceedings of the 61st IEEE Conference on Decision and Control (CDC 2022) 2022 12 reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-glebke-wireless-anycast.pdf IEEE Proceedings of the 61st IEEE Conference on Decision and Control (CDC 2022) 10.1109/CDC51059.2022.9992864 1 RenéGlebke JanScheiper StefanLenz MirkoStoffers KlausWehrle inproceedings 2022-serror-ccs-inside 2022 11 7 https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-serror-ccs-inside.pdf ACM online Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security Los Angeles, CA, USA November 8, 2022 10.1145/3548606.3563500 1 MartinSerror LennartBader MartinHenze ArneSchwarze KaiNürnberger inproceedings 2022-wolsing-ipal 2022 10 26 The increasing interconnection of industrial networks exposes them to an ever-growing risk of cyber attacks. To reveal such attacks early and prevent any damage, industrial intrusion detection searches for anomalies in otherwise predictable communication or process behavior. However, current efforts mostly focus on specific domains and protocols, leading to a research landscape broken up into isolated silos. Thus, existing approaches cannot be applied to other industries that would equally benefit from powerful detection. To better understand this issue, we survey 53 detection systems and find no fundamental reason for their narrow focus. Although they are often coupled to specific industrial protocols in practice, many approaches could generalize to new industrial scenarios in theory. To unlock this potential, we propose IPAL, our industrial protocol abstraction layer, to decouple intrusion detection from domain-specific industrial protocols. After proving IPAL’s correctness in a reproducibility study of related work, we showcase its unique benefits by studying the generalizability of existing approaches to new datasets and conclude that they are indeed not restricted to specific domains or protocols and can perform outside their restricted silos. /fileadmin/papers/2022/2022-wolsing-ipal.pdf Proceedings of the 25th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2022) 10.1145/3545948.3545968 1 KonradWolsing EricWagner AntoineSaillard MartinHenze inproceedings 2022-rechenberg-cim 2022 10 Maritime Cybersecurity, Intrusion Detection System, Integrated Bridge System, IEC 61162-450, NMEA 0183 https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-rechenberg-guiding.pdf https://zenodo.org/record/7148794 Zenodo European Workshop on Maritime Systems Resilience and Security (MARESEC 2022) Bremerhaven, Germany 10.5281/zenodo.7148794 1 Merlinvon Rechenberg NinaRößler MariSchmidt KonradWolsing FlorianMotz MichaelBergmann ElmarPadilla JanBauer proceedings 2022-wolsing-radarsec 2022 9 IEEE Edmonton, Canada 47th IEEE Conference on Local Computer Networks (LCN) September 26-29, 2022 10.1109/LCN53696.2022.9843801 1 KonradWolsing AntoineSaillard JanBauer EricWagner Christianvan Sloun Ina BereniceFink MariSchmidt KlausWehrle MartinHenze proceedings 2022-serror-cset 2022 8 8 5 data sets, network traffic, smart grid security, IDS https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-serror-cset-powerduck.pdf ACM

New York, NY, USA

online Virtual Cyber Security Experimentation and Test Workshop (CSET 2022) August 8, 2022 978-1-4503-9684-4/22/08 10.1145/3546096.3546102 1 SvenZemanek ImmanuelHacker KonradWolsing EricWagner MartinHenze MartinSerror inproceedings 2022-sander-h3-prio-hol 2022 6 27 legato https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/2022-sander-h3-prio-hol.pdf IFIP Proceedings of the Network Traffic Measurement and Analysis Conference (TMA '22) Enschede Network Traffic Measurement and Analysis Conference 27.06.22-30.06.22 978-3-903176-47-8 1 ConstantinSander IkeKunze KlausWehrle inproceedings 2022-schemmel-kdalloc 2022 6 safe https://drops.dagstuhl.de/opus/volltexte/2022/16237/pdf/LIPIcs-ECOOP-2022-9.pdf European Conference on Object-Oriented Programming (ECOOP 2022) 10.4230/LIPIcs.ECOOP.2022.9 1 DanielSchemmel JulianBüning FrankBusse MartinNowack CristianCadar inproceedings WagnerSWH2022 2022 5 18 201-206 /fileadmin/papers/2022/2022-wagner-bpmac.pdf ACM Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '22) San Antonio, Texas, USA 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '22) 978-1-4503-9216-7/22/05 10.1145/3507657.3528554 1 EricWagner MartinSerror KlausWehrle MartinHenze inproceedings lorenz-ven2us-2022 2022 Power grids are increasingly faced with the introduction of decentralized, highly volatile power supplies from renewable energies and high loads occurring from e-mobility. However, today’s static grid protection cannot manage all upcoming conditions while providing a high level of dependability and security. It forms a bottleneck of a future decarbonizing grid development. In our research project, we develop and verify an adaptive grid protection algorithm. It calculates situation dependent protection parameters for the event of power flow shifts and topology changes caused by volatile power supplies due to the increase of renewable generation and the rapid expansion of e-mobility. As a result the distribution grid can be operated with the optimally adapted protection parameters and functions for changing operating states. To safely adjust the values on protection hardware in the field, i.e., safe from hardware failures and cyberattacks, we research resilient and secure communication concepts for the adaptive and interconnected grid protection system. Finally, we validate our concept and system by demonstrations in the laboratory and field tests. ven2us Proceedings of the CIRED workshop on E-mobility and power distribution systems 2022 Porto CIRED workshop on E-mobility and power distribution systems 2022 2-3 June 2022 10.1049/icp.2022.0768 1 MatthiasLorenz Tobias MarkusPletzer MalteSchuhmacher TorstenSowa MichaelDahms SimonStock DavoodBabazadeh ChristianBecker JohannJaeger TobiasLorz MarkusDahlmanns Ina BereniceFink KlausWehrle AndreasUlbig PhilippLinnartz AntigonaSelimaj ThomasOffergeld inproceedings 2021_kiesel_5g 2021 12 15 739-744 Latency-critical applications in production promise to be essential enablers for performance improvement in production. However, they require the right and often wireless communication system. 5G technology appears to be an effective way to achieve communication system for these applications. Its estimated economic benefit on production gross domestic product is immense ($740 billion Euro until 2030). However, 55% of production companies state that 5G technology deployment is currently not a subject matter for them and mainly state the lack of knowledge on benefits as a reason. Currently, it is missing an approach or model for a use case specific, data-based evaluation of 5G technology influence on the performance of production applications. Therefore, this paper presents a model to evaluate the potential of 5G technology for latency-critical applications in production. First, we derive requirements for the model to fulfill the decision-makers' needs. Second, we analyze existing evaluation approaches regarding their fulfillment of the derived requirements. Third, based on outlined research gaps, we develop a model fulfilling the requirements. Fourth, we give an outlook for further research needs. 5G technology; latency-critical applications; production; evaluation model https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-kiesel-5g-model.pdf IEEE Proceedings of the 28th IEEE International Conference on Industrial Engineering and Engineering Management (IEEM '21), December 13-16, 2021, Singapore, Singapore Singapore, Singapore December 13-16, 2021 978-1-6654-3771-4 10.1109/IEEM50564.2021.9673074 1 RaphaelKiesel FalkBoehm JanPennekamp Robert H.Schmitt inproceedings 2021-krude-nfp-pred 2021 12 7 maki https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-krude-nfp-pred.pdf ACM The 17th International Conference on emerging Networking EXperiments and Technologies (CoNEXT '21) 978-1-4503-9098-9/21/12 10.1145/3485983.3494842 1 JohannesKrude JanRüth DanielSchemmel FelixRath Iohannes-HeorhFolbort KlausWehrle inproceedings 2021-kunze-spin-tracker 2021 12 7 15–21 https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-kunze-spin-tracker.pdf ACM Proceedings of the 2021 Workshop on Evolution, Performance and Interoperability of QUIC (EPIQ '21) 9781450391351 10.1145/3488660.3493804 1 IkeKunze ConstantinSander KlausWehrle JanRüth inproceedings 2021_pennekamp_bootstrapping 2021 11 15 RWTH-2021-09499 In addition to quality improvements and cost reductions, dynamic and flexible business relationships are expected to become more important in the future to account for specific customer change requests or small-batch production. Today, despite reservation, sensitive information must be shared upfront between buyers and sellers. However, without a trust relation, this situation is precarious for the involved companies as they fear for their competitiveness following information leaks or breaches of their privacy. To address this issue, the concepts of confidential computing and cloud computing come to mind as they promise to offer scalable approaches that preserve the privacy of participating companies. In particular, designs building on confidential computing can help to technically enforce privacy. Moreover, cloud computing constitutes an elegant design choice to scale these novel protocols to industry needs while limiting the setup and management overhead for practitioners. Thus, novel approaches in this area can advance the status quo of bootstrapping new relationships as they provide privacy-preserving alternatives that are suitable for immediate deployment. bootstrapping procurement; business relationships; secure industrial collaboration; privacy; Internet of Production internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-pennekamp-bootstrapping.pdf RWTH Aachen University Blitz Talk at the 2021 Cloud Computing Security Workshop (CCSW '21), co-located with the 28th ACM SIGSAC Conference on Computer and Communications Security (CCS '21), November 15-19, 2021, Seoul, Korea RWTH Aachen University Seoul, Korea November 14, 2021 10.18154/RWTH-2021-09499 JanPennekamp FrederikFuhrmann MarkusDahlmanns TimoHeutmann AlexanderKreppein DennisGrunert ChristophLange Robert H.Schmitt KlausWehrle inproceedings 2021-sander-shardingrevisited 2021 11 2 legato /fileadmin/papers/2021/2021-sander-sharding-revisited.pdf ACM Proceedings of the Internet Measurement Conference (IMC '21) Internet Measurement Conference 2021 02.11.21 - 04.11.21 978-1-4503-9129-0/21/11 10.1145/3487552.3487832 1 ConstantinSander LeoBlöcher KlausWehrle JanRüth proceedings fink-lcn-demons-2021 2021 10 4 nerd-nrw https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-fink-lcn-demons.pdf IEEE online Edmonton, Canada 46th IEEE Conference on Local Computer Networks (LCN) October 4-7, 2021 10.1109/LCN52139.2021.9524879 1 Ina BereniceFink MartinSerror KlausWehrle inproceedings 2021-glebke-service-based-forwarding 2021 6 10 reflexes /fileadmin/papers/2021/2021-glebke-service-based-forwarding.pdf IEEE Proceedings of the 2021 IEEE International Conference on High Performance Switching and Routing: Workshop on Semantic Addressing and Routing for Future Networks (SARNET-21) 978-1-6654-4005-9 2325-5609 10.1109/HPSR52026.2021.9481814 1 RenéGlebke DirkTrossen IkeKunze DavidLou JanRüth MirkoStoffers KlausWehrle inproceedings 2021-kunze-coordinate-transformation 2021 5 11 334-340 in-network computing; latency; approximation internet-of-production,reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-kunze-coordinate-transformation.pdf IEEE Proceedings of the 4th IEEE International Conference on Industrial Cyber-Physical Systems (ICPS '21) 978-1-7281-6207-2 10.1109/ICPS49255.2021.9468247 1 IkeKunze RenéGlebke JanScheiper MatthiasBodenbenner Robert H.Schmitt KlausWehrle article 2021_buckhorst_lmas Procedia CIRP 2021 5 3 99 448-453 Assembly systems must provide maximum flexibility qualified by organization and technology to offer cost-compliant performance features to differentiate themselves from competitors in buyers' markets. By mobilization of multipurpose resources and dynamic planning, Line-less Mobile Assembly Systems (LMASs) offer organizational reconfigurability. By proposing a holarchy to combine LMASs with the concept of an Internet of Production (IoP), we enable LMASs to source valuable information from cross-level production networks, physical resources, software nodes, and data stores that are interconnected in an IoP. The presented holarchy provides a concept of how to address future challenges, meet the requirements of shorter lead times, and unique lifecycle support. The paper suggests an application of decision making, distributed sensor services, recommender-based data reduction, and in-network computing while considering safety and human usability alike. Proceedings of the 14th CIRP Conference on Intelligent Computation in Manufacturing Engineering (ICME '20), July 14-17, 2020, Gulf of Naples, Italy Internet of Production; Line-less Mobile Assembly System; Industrial Assembly; Smart Factory internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-buckhorst-holarchy.pdf Elsevier Gulf of Naples, Italy July 14-17, 2020 2212-8271 10.1016/j.procir.2021.03.064 1 Armin F.Buckhorst BenjaminMontavon DominikWolfschläger MelanieBuchsbaum AmirShahidi HenningPetruck IkeKunze JanPennekamp ChristianBrecher MathiasHüsing BurkhardCorves VerenaNitsch KlausWehrle Robert H.Schmitt inproceedings 2021-kunze-aqm-tofino-p4 2021 5 72-80 internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-kunze-aqm-tofino-p4.pdf IFIP/IEEE Proceedings of the International Symposium on Integrated Network Management (IM '21) Virtual Event International Symposium on Integrated Network Management (IM '21) May 2021 978-1-7281-9041-9 1 IkeKunze MoritzGunz DavidSaam KlausWehrle JanRüth inproceedings 2021_dahlmanns_entrust 2021 4 28 78–87 The ongoing digitization of industrial manufacturing leads to a decisive change in industrial communication paradigms. Moving from traditional one-to-one to many-to-many communication, publish/subscribe systems promise a more dynamic and efficient exchange of data. However, the resulting significantly more complex communication relationships render traditional end-to-end security futile for sufficiently protecting the sensitive and safety-critical data transmitted in industrial systems. Most notably, the central message brokers inherent in publish/subscribe systems introduce a designated weak spot for security as they can access all communication messages. To address this issue, we propose ENTRUST, a novel solution for key server-based end-to-end security in publish/subscribe systems. ENTRUST transparently realizes confidentiality, integrity, and authentication for publish/subscribe systems without any modification of the underlying protocol. We exemplarily implement ENTRUST on top of MQTT, the de-facto standard for machine-to-machine communication, showing that ENTRUST can integrate seamlessly into existing publish/subscribe systems. cyber-physical system security; publish-subscribe security; end-to-end security internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-dahlmanns-entrust.pdf ACM Proceedings of the 1st ACM Workshop on Secure and Trustworthy Cyber-Physical Systems (SaT-CPS '21), co-located with the 11th ACM Conference on Data and Application Security and Privacy (CODASPY '21), April 26-28, 2021, Virtual Event, USA Virtual Event, USA ACM Workshop on Secure and Trustworthy Cyber-Physical Systems April 28, 2021 978-1-4503-8319-6/21/04 10.1145/3445969.3450423 1 MarkusDahlmanns JanPennekamp Ina BereniceFink BerndSchoolmann KlausWehrle MartinHenze inproceedings 2021-sander-zoom-cc 2021 3 internet-of-production /fileadmin/papers/2021/2021-sander-zoom-fairness-aqm.pdf https://arxiv.org/abs/2107.00904 Springer Proceedings of the Passive and Active Measurement Conference (PAM '21) Passive and Active Measurement Conference (PAM 2021) 10.1007/978-3-030-72582-2_1 1 ConstantinSander IkeKunze KlausWehrle JanRüth phdthesis 2021-serror-phd-thesis 2021 3 https://www.shaker.de/de/content/catalogue/index.asp?ISBN=978-3-8440-7923-4 Shaker Verlag

Shaker Verlag, Düren, Germany

Reports on Communications and Distributed Systems 21 RWTH Aachen University Ph.D. Thesis 978-3-8440-7923-4 MartinSerror article 2021_schomakers_insights Computer Law Review International 2021 2 15 22 1 8-15 Social media, cloud computing, and the Internet of Things connect people around the globe, offering manifold benefits. However, the technological advances and increased user participation generate novel challenges for users' privacy. From the users' perspective, the consequences of data disclosure depend on the perceived sensitivity of that data. But in light of the new technological opportunities to process and combine data, it is questionable whether users can adequately evaluate risks of data disclosures. As mediating authority, data protection laws such as the European General Data Protection Regulation try to protect user data, granting enhanced protection to "special categories" of data. This article assesses the legal, technological, and users' perspectives on information sensitivity and their interplay. Technologically, all data can be referred to as "potentially sensitive." The legal and users' perspective on information sensitivity deviate from this standpoint, as some data types are granted special protection by law but are not perceived as very sensitive by users and vice versa. The key findings here suggest the GDPR adequately protecting users' privacy but for small adjustments. Information Sensitivity, Privacy, European Data Protection Law 1610-7608 10.9785/cri-2021-220103 1 Eva-MariaSchomakers ChantalLidynia DirkMüllmann RomanMatzutt KlausWehrle IndraSpiecker gen. Döhmann MartinaZiefle inproceedings 2019_rut_schomakers_privacy 2021 1 27 857-870 Social media, cloud computing, and the Internet of Things connect people around the globe, offering manifold benefits. However, the technological advances and increased user participation generate novel challenges for users' privacy. From the users' perspective, the consequences of data disclosure depend on the perceived sensitivity of that data. But in light of the new technological opportunities to process and combine data, it is questionable whether users can adequately evaluate risks of data disclosures. As mediating authority, data protection laws such as the European General Data Protection Regulation try to protect user data, granting enhanced protection to "special categories" of data. In this paper, we assess the legal, technological, and users' perspectives on information sensitivity and their interplay. Technologically, all data can be referred to as "potentially sensitive." The legal and users' perspective on information sensitivity deviate from this standpoint, as some data types are granted special protection by law but are not perceived as very sensitive by users and vice versa. Our key findings still suggest the GDPR adequately protecting users' privacy but for small adjustments. Information Sensitivity,Privacy,European Data Protection Law mynedata https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-schomakers-3perspectives.pdf https://dl.gi.de/handle/20.500.12116/34788 https://arxiv.org/abs/1911.06569 Gesellschaft für Informatik

Bonn

INFORMATIK 2020 Karlsruhe, Germany INFORMATIK 2020 2020-09-28 to 2020-10-01 English 10.18420/inf2020_76 1 Eva-MariaSchomakers ChantalLidynia DirkMüllmann RomanMatzutt KlausWehrle IndraSpiecker gen. Döhmann MartinaZiefle inproceedings 2020_pennekamp_benchmarking 2020 12 15 31-44 Benchmarking the performance of companies is essential to identify improvement potentials in various industries. Due to a competitive environment, this process imposes strong privacy needs, as leaked business secrets can have devastating effects on participating companies. Consequently, related work proposes to protect sensitive input data of companies using secure multi-party computation or homomorphic encryption. However, related work so far does not consider that also the benchmarking algorithm, used in today's applied real-world scenarios to compute all relevant statistics, itself contains significant intellectual property, and thus needs to be protected. Addressing this issue, we present PCB — a practical design for Privacy-preserving Company Benchmarking that utilizes homomorphic encryption and a privacy proxy — which is specifically tailored for realistic real-world applications in which we protect companies' sensitive input data and the valuable algorithms used to compute underlying key performance indicators. We evaluate PCB's performance using synthetic measurements and showcase its applicability alongside an actual company benchmarking performed in the domain of injection molding, covering 48 distinct key performance indicators calculated out of hundreds of different input values. By protecting the privacy of all participants, we enable them to fully profit from the benefits of company benchmarking. practical encrypted computing; homomorphic encryption; algorithm confidentiality; benchmarking; key performance indicators; industrial application; Internet of Production internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-pennekamp-company-benchmarking.pdf https://eprint.iacr.org/2020/1512 HomomorphicEncryption.org Proceedings of the 8th Workshop on Encrypted Computing & Applied Homomorphic Cryptography (WAHC '20), December 15, 2020, Virtual Event Virtual Event December 15, 2020 978-3-00-067798-4 10.25835/0072999 1 JanPennekamp PatrickSapel Ina BereniceFink SimonWagner SebastianReuter ChristianHopmann KlausWehrle MartinHenze proceedings fink-lcn-demons-2020 2020 11 15 nerd-nrw https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-fink-lcn-mud-smartphone.pdf IEEE online Sydney, Australia 45th IEEE Conference on Local Computer Networks (LCN) November 16-19, 2020 10.1109/LCN48667.2020.9314782 1 Ina BereniceFink MartinSerror KlausWehrle article serror-iiotsec-tii-2020 IEEE Transactions on Industrial Informatics 2020 9 11 17 5 2985-2996 nerd-nrw https://comsys.rwth-aachen.de/fileadmin/papers/2020/2020-serror-tii-iiotsec.pdf https://ieeexplore.ieee.org/document/9195014 online 1941-0050 10.1109/TII.2020.3023507 1 MartinSerror SachaHack MartinHenze MarkoSchuba KlausWehrle inproceedings 2020-kirchhof-wowmom-ccncps 2020 8 31 internet-of-production, reflexes https://comsys.rwth-aachen.de/fileadmin/papers/2020/2020-kirchhof-wireless-mac-improvements.pdf IEEE Computer Society online International Symposium on a World of Wireless, Mobile and Multimedia Networks: Workshop on Communication, Computing, and Networking in Cyber Physical Systems (WoWMoM-CCNCPS'2020), August 31 - September 3, 2020, Cork, Ireland Cork, Ireland August 31 - September 3, 2020 10.1109/WoWMoM49955.2020.00068 1 Jörg ChristianKirchhof MartinSerror RenéGlebke KlausWehrle inproceedings 2020-schemmel-porse 2020 7 symbiosys https://arxiv.org/pdf/2005.06688.pdf https://arxiv.org/abs/2005.06688 Computer Aided Verification (CAV 2020) 32nd International Conference on Computer Aided Verification 10.1007/978-3-030-53288-8_18 1 DanielSchemmel JulianBüning CésarRodríguez DavidLaprell KlausWehrle inproceedings 2020-serror-networking-qwin 2020 6 21 consent https://comsys.rwth-aachen.de/fileadmin/papers/2020/2020-serror-qwin.pdf https://ieeexplore.ieee.org/abstract/document/9142792 IFIP online Proceedings of the 19th IFIP Networking 2020 Conference (NETWORKING '20), June 22-26, 2020, Paris, France Paris, France IFIP NETWORKING Conference June 22-26, 2020 978-3-903176-28-7 1 MartinSerror EricWagner RenéGlebke KlausWehrle inproceedings 2020-mann-ur-weldseamstudy 2020 6 https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-mann-weld-seam-geometry-control.pdf Proceedings of the 2020 Internal Conference on Ubiquitous Robots Internal Conference on Ubiquitous Robots June 22-26, 2020 10.1109/UR49135.2020.9144839 1 SamuelMann RenéGlebke IkeKunze DominikScheurenberg RahulSharma UweReisgen KlausWehrle DirkAbel article 2020_gleim_factDAG IEEE Internet of Things Journal 2020 4 14 7 4 3243-3253 In the production industry, the volume, variety and velocity of data as well as the number of deployed protocols increase exponentially due to the influences of IoT advances. While hundreds of isolated solutions exist to utilize this data, e.g., optimizing processes or monitoring machine conditions, the lack of a unified data handling and exchange mechanism hinders the implementation of approaches to improve the quality of decisions and processes in such an interconnected environment. The vision of an Internet of Production promises the establishment of a Worldwide Lab, where data from every process in the network can be utilized, even interorganizational and across domains. While numerous existing approaches consider interoperability from an interface and communication system perspective, fundamental questions of data and information interoperability remain insufficiently addressed. In this paper, we identify ten key issues, derived from three distinctive real-world use cases, that hinder large-scale data interoperability for industrial processes. Based on these issues we derive a set of five key requirements for future (IoT) data layers, building upon the FAIR data principles. We propose to address them by creating FactDAG, a conceptual data layer model for maintaining a provenance-based, directed acyclic graph of facts, inspired by successful distributed version-control and collaboration systems. Eventually, such a standardization should greatly shape the future of interoperability in an interconnected production industry. Data Management; Data Versioning; Interoperability; Industrial Internet of Things; Worldwide Lab internet-of-production https://comsys.rwth-aachen.de/fileadmin/papers/2020/2020-gleim-iotj-iop-interoperability.pdf IEEE 2327-4662 10.1109/JIOT.2020.2966402 1 LarsGleim JanPennekamp MartinLiebenberg MelanieBuchsbaum PhilippNiemietz SimonKnape AlexanderEpple SimonStorms DanielTrauth ThomasBergs ChristianBrecher StefanDecker GerhardLakemeyer KlausWehrle article 2020_mann_welding_layers Advanced Structured Materials 2020 4 1 125 101-118 A connected, digitalized welding production unlocks vast and dynamic potentials: from improving state of the art welding to new business models in production. For this reason, offering frameworks, which are capable of addressing multiple layers of applications on the one hand and providing means of data security and privacy for ubiquitous dataflows on the other hand, is an important step to enable the envisioned advances. In this context, welding production has been introduced from the perspective of interlaced process layers connecting information sources across various entities. Each layer has its own distinct challenges from both a process view and a data perspective. Besides, investigating each layer promises to reveal insight into (currently unknown) process interconnections. This approach has been substantiated by methods for data security and privacy to draw a line between secure handling of data and the need of trustworthy dealing with sensitive data among different parties and therefore partners. In conclusion, the welding production has to develop itself from an accumulation of local and isolated data sources towards a secure industrial collaboration in an Internet of Production. Proceedings of the 1st International Conference on Advanced Joining Processes (AJP '19) Welding Production; Industrie 4.0; Internet of Production; Data Security; Data Privacy Internet-of-Production https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-mann-welding-layers.pdf Springer Ponta Delgada, Azores, Portugal October 24-25, 2019 978-981-15-2956-6 1869-8433 10.1007/978-981-15-2957-3_8 1 SamuelMann JanPennekamp TobiasBrockhoff AnahitaFarhang MahsaPourbafrani LukasOster Merih SeranUysal RahulSharma UweReisgen KlausWehrle Wilvan der Aalst article 2020-wehrle-digitalshadows Der Profilbereich "Information & Communication Technology" 2020 0179-079X 10.18154/RWTH-2021-02496 MatthiasJarke Wilvan der Aalst ChristianBrecher MatthiasBrockmann IstvánKoren GerhardLakemeyer BernhardRumpe GüntherSchuh KlausWehrle MartinaZiefle inproceedings 2019-glebke-in-network-cv 2019 12 9 reflexes,maki,internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-glebke-in-network-cv.pdf Online ACM 1st ACM CoNEXT Workshop on Emerging in-Network Computing Paradigms (ENCP '19) en 978-1-4503-7000-4/19/12 10.1145/3359993.3366646 1 RenéGlebke JohannesKrude IkeKunze JanRüth FelixSenger KlausWehrle inproceedings 2019_pennekamp_dataflows 2019 11 11 27-38 The Internet of Production (IoP) envisions the interconnection of previously isolated CPS in the area of manufacturing across institutional boundaries to realize benefits such as increased profit margins and product quality as well as reduced product development costs and time to market. This interconnection of CPS will lead to a plethora of new dataflows, especially between (partially) distrusting entities. In this paper, we identify and illustrate these envisioned inter-organizational dataflows and the participating entities alongside two real-world use cases from the production domain: a fine blanking line and a connected job shop. Our analysis allows us to identify distinct security and privacy demands and challenges for these new dataflows. As a foundation to address the resulting requirements, we provide a survey of promising technical building blocks to secure inter-organizational dataflows in an IoP and propose next steps for future research. Consequently, we move an important step forward to overcome security and privacy concerns as an obstacle for realizing the promised potentials in an Internet of Production. Internet of Production; dataflows; Information Security internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-pennekamp-dataflows.pdf ACM Proceedings of the 5th ACM Workshop on Cyber-Physical Systems Security and PrivaCy (CPS-SPC '19), co-located with the 26th ACM SIGSAC Conference on Computer and Communications Security (CCS '19), November 11-15, 2019, London, United Kingdom London, United Kingdom November 11-15, 2019 978-1-4503-6831-5/19/11 10.1145/3338499.3357357 1 JanPennekamp MartinHenze SimoSchmidt PhilippNiemietz MarcelFey DanielTrauth ThomasBergs ChristianBrecher KlausWehrle book 2019-stoffers-dissertation 2019 10 Discrete Event Simulation; Parallelization; Memoization memosim https://www.shaker.de/de/content/catalogue/index.asp?ISBN=978-3-8440-6973-0 Klaus Wehrle Shaker Reports on Communications and Distributed Systems en 978-3-8440-6973-0 1 MirkoStoffers inproceedings 2019-sander-depcci 2019 8 18 maki https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-sander-deepcci.pdf https://arxiv.org/abs/1907.02323 ACM In Proceedings of the ACM SIGCOMM Workshop on Network Meets AI & ML (NetAI '19) Beijing, China Workshop on Network Meets AI & ML 18.08.2019 10.1145/3341216.3342211 1 ConstantinSander JanRüth OliverHohlfeld KlausWehrle techreport 2019-rueth-blitzstart 2019 5 8 arXiv:1905.03144 [cs.NI] 1--8 https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-rueth-blitzstart.pdf https://arxiv.org/abs/1905.03144 Online COMSYS, RWTH Aachen University

Ahornstr. 55, 52074 Aachen, Germany

COMSYS, RWTH Aachen University Technical Report en JanRüth KonradWolsing MartinSerror KlausWehrle OliverHohlfeld techreport 2019-hohlfeld-santa-tr 2019 4 1 arXiv:1904.00671 [cs.NI] 1--14 maki https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-hohlfeld-santatr.pdf https://arxiv.org/abs/1904.00671 Online COMSYS, RWTH Aachen University

Ahornstr. 55, 52074 Aachen, Germany

COMSYS, RWTH Aachen University Technical Report en OliverHohlfeld HelgeReelfs JanRüth FlorianSchmidt TorstenZimmermann JensHiller KlausWehrle inproceedings 2019-glebke-wirelessgain 2019 3 25 reflexes,spp https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-glebke-wirelessgain.pdf ACM In Proceedings of the International Workshop on Edge Systems, Analytics and Networking (EdgeSys 2019) Dresden, Germany International Workshop on Edge Systems, Analytics and Networking (EdgeSys 2019) 25.03.2019 10.1145/3301418.3313943 1 SebastianGallenmüller RenéGlebke StephanGünther EricHauser MauriceLeclaire StefanReif JanRüth AndreasSchmidt GeorgCarle ThorstenHerfet WolfgangSchröder-Preikschat KlausWehrle article 2019_wehrle_dagstuhl_beginners ACM SIGCOMM Computer Communication Review 2019 1 49 1 24-30 Reproducibility is one of the key characteristics of good science, but hard to achieve for experimental disciplines like Internet measurements and networked systems. This guide provides advice to researchers, particularly those new to the field, on designing experiments so that their work is more likely to be reproducible and to serve as a foundation for follow-on work by others. 0146-4833 10.1145/3314212.3314217 VaibhavBajpai AnnaBrunstrom AnjaFeldmann WolfgangKellerer AikoPras HenningSchulzrinne GeorgiosSmaragdakis MatthiasWählisch KlausWehrle proceedings 2018-QuicTesting 2018 12 4 erc,symbiosys https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-rath-quictesting.pdf https://dl.acm.org/citation.cfm?id=3284853 https://arxiv.org/abs/1811.12099 ACM Heraklion, Greece EPIQ'18 Workshop Paper 4.12.2018 en 978-1-4503-6082-1 10.1145/3284850.3284853 1 FelixRath DanielSchemmel KlausWehrle inproceedings 2018-tzimmermann-toplists 2018 10 31 maki https://dl.acm.org/citation.cfm?id=3278574 https://arxiv.org/abs/1805.11506 ACM Proceedings of the 2018 Internet Measurement Conference (IMC), Boston, USA Boston, US Internet Measurement Conference 2018 31.10.18 - 2.11.18 en 10.1145/3278532.3278574 1 QuirinScheitle OliverHohlfeld JulienGamba JonasJelten TorstenZimmermann Stephen D.Strowes NarseoVallina-Rodriguez article 2018-stoffers-on-automated-memoization ACM Transactions on Modeling and Computer Simulation (TOMACS) 2018 10 28 4 Article 26 26:1-26:25 memosim,symbiosys file:2213 10.1145/3186316 1 MirkoStoffers DanielSchemmel OscarSoria Dustmann KlausWehrle inproceedings 2018-hiller-lcn-lowlatencyiiot 2018 10 connect,iop,nerd-nrw https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-hiller-lcn-secure_low_latency_communication_iiot.pdf IEEE 43rd IEEE Conference on Local Computer Networks (LCN), Chicago, USA Chicago, USA 43nd IEEE Conference on Local Computer Networks (LCN) October 1-4, 2018 en 978-1-5386-4413-3 10.1109/LCN.2018.8638027 1 JensHiller MartinHenze MartinSerror EricWagner Jan NiklasRichter KlausWehrle inproceedings 2018-hohlfeld-santa 2018 9 3 maki,ssiclops,reflexes https://ieeexplore.ieee.org/document/8493053 IEEE Proceedings of the 2018 30th International Teletraffic Congress (ITC 30), Vienna, Austria Vienna, Austria International Teletraffic Congress ITC 30 03.09.2018 - 07-09.2018 en 10.1109/ITC30.2018.00015 1 OliverHohlfeld Jens HelgeReelfs JanRüth FlorianSchmidt TorstenZimmermann JensHiller KlausWehrle inproceedings 2018-soria-dustmann-parti 2018 9 symbiosys file:2195 Proceedings of the 2018 Conference on Automated Software Engineering (ASE'18) 10.1145/3238147.3238179 1 OscarSoria Dustmann KlausWehrle CristianCadar inproceedings 2018-serror-ares-iotsec 2018 8 27 consent, iotrust https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-serror-iotsecfor-in-network-security.pdf ACM online Proceedings of the 2nd International Workshop on Security and Forensics of IoT (IoT-SECFOR), co-located with the 13th International Conference on Availability, Reliability and Security (ARES 2018), Hamburg, Germany Hamburg, Germany International Conference on Availability, Reliability and Security August 27--30, 2018 978-1-4503-6448-5 10.1145/3230833.3232802 1 MartinSerror MartinHenze SachaHack MarkoSchuba KlausWehrle inproceedings 2018-krude-circuit 2018 8 20 1-7 maki https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-krude-xocks.pdf ACM Proceedings of the 2018 Afternoon Workshop on Kernel Bypassing Networks (KBNets'18) Budapest, Hungary Afternoon Workshop on Kernel Bypassing Networks 20.8.2018 10.1145/3229538.3229539 1 JohannesKrude MirkoStoffers KlausWehrle inproceedings 2018-cav-schemmel-liveness 2018 7 14 symbiosys https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-schemmel-symbolic-liveness-analysis-of-real-world-software.pdf Computer Aided Verification (CAV 2018) Oxford, Great Britain 30th International Conference on Computer Aided Verification 2018-07-14 to 2018-07-17 en 10.1007/978-3-319-96142-2_27 1 DanielSchemmel JulianBüning OscarSoria Dustmann ThomasNoll KlausWehrle article 2018-serror-tvt-fb IEEE Transactions on Vehicular Technology 2018 7 67 7 5778-5792 koi https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-serror-tvt-fbl-performance.pdf IEEE online 0018-9545 10.1109/TVT.2018.2794178 1 YulinHu MartinSerror KlausWehrle JamesGross inproceedings 2018-serror-wowmom-relaying 2018 6 11 iop https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-serror-wowmom-relaying.pdf IEEE online 19th IEEE International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (IEEE WoWMoM 2018), Chania, Greece Chania, Crete, Greece WoWMoM June 12-15, 2018 978-1-5386-4725-7 10.1109/WoWMoM.2018.8449807 1 MartinSerror SebastianVaaßen KlausWehrle JamesGross inproceedings 2018-hiller-ic2e-cpplintegration 2018 4 19 241-249 ssiclops,iop https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-hiller-ic2e-policy-aware-cloud.pdf https://ieeexplore.ieee.org/document/8360335 IEEE Proceedings of the 2018 IEEE International Conference on Cloud Engineering (IC2E 2018), Orlando, Florida, USA Orlando, Florida, USA 2018 IEEE International Conference on Cloud Engineering (IC2E 2018) 2018-04-19 978-1-5386-5008-0 10.1109/IC2E.2018.00050 1 JensHiller MaelKimmerlin MaxPlauth SeppoHeikkila StefanKlauck VilleLindfors FelixEberhardt DariuszBursztynowski Jesus LlorenteSantos OliverHohlfeld KlausWehrle inproceedings 2018-cpsbench-schemmel-equiv 2018 4 10 symbiosys,reflexes file:2196 Proceedings of the 1st Workshop on Benchmarking Cyber-Physical Networks and Systems (CPSBench'18) Porto, Portugal 1st Workshop on Benchmarking Cyber-Physical Networks and Systems 2018-04-10 978-1-5386-6742-2 10.1109/CPSBench.2018.00011 1 DanielSchemmel RenéGlebke MirkoStoffers KlausWehrle article 2018-scheitle-ccr-caa ACM SIGCOMM Computer Communications Review (CCR) 2018 4 48 10-23 https://www.net.in.tum.de/fileadmin/bibtex/publications/papers/caa17.pdf internet-measurements https://ccronline.sigcomm.org/wp-content/uploads/2018/05/sigcomm-ccr-final163.pdf https://ccronline.sigcomm.org/2018/a-first-look-at-certification-authority-authorization-caa/ 2018-06-05 10.1145/3213232.3213235 1 QuirinScheitle TaejoongChung JensHiller OliverGasser JohannesNaab Rolandvan Rijswijk-Deij OliverHohlfeld RalphHolz DaveChoffnes AlanMislove GeorgCarle inproceedings 2017-poormohammady 13th International Conference on Network and Service Management 2017 11 26 Online IEEE 13th International Conference on Network and Service Management, Tokyo, Japan en 10.23919/CNSM.2017.8256009 1 EhsanPoormohammady Jens HelgeReelfs MirkoStoffers KlausWehrle ApostolosPapageorgiou inproceedings 2017-liew-schemmel-fp 2017 10 30 symbiosys file:1848 Proceedings of the 32nd IEEE/ACM International Conference on Automated Software Engineering Urbana-Champaign, IL, USA en 978-1-5386-2684-9/17 1 DanielLiew DanielSchemmel CristianCadar AlastairDonaldson RafaelZähl KlausWehrle inproceedings 2017-stoffers-dsrt-memo-ident 2017 10 18 33-42 Automatic Memoization; Accelerating Parameter Studies; Performance Prediction memosim,symbiosys http://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-stoffers-dsrt-memo-ident.pdf Online IEEE Proceedings of the 21st IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications (DS-RT 2017), Rome, Italy Rome, Italy en 10.1109/DISTRA.2017.8167664 1 MirkoStoffers RalfBettermann KlausWehrle conference 2017-fink-brainlab-gmds 2017 8 29 Best Abstract Award https://www.egms.de/static/en/meetings/gmds2017/17gmds137.shtml 06.09.19 German Medical Science GMS Publishing House (2017) 62. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie e.V. (GMDS). Oldenburg GMDS 2017 17-21 September 2017 10.3205/17gmds137 1 Ina BereniceFink BerndHankammer ThomasStopinski YannicTitgemeyer RoannRamos EkaterinaKutafina Jó AgilaBitsch Stephan MichaelJonas proceedings 2017-SymPerfPoster 2017 8 21 spp,erc,symbiosys,reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-rath-sym-perf-poster.pdf ACM Los Angeles, USA ACM SIGCOMM 2017 Poster 21.8.2017 - 25.8.2017 en 978-1-4503-5057-0/17/08 10.1145/3123878.3131977 1 FelixRath JohannesKrude JanRüth DanielSchemmel OliverHohlfeld Jó AgilaBitsch Link KlausWehrle article 2017-ziegeldorf-bmcmedgenomics-bloom BMC Medical Genomics 2017 7 26 10 Suppl 2 29-42 Whole genome sequencing has become fast, accurate, and cheap, paving the way towards the large-scale collection and processing of human genome data. Unfortunately, this dawning genome era does not only promise tremendous advances in biomedical research but also causes unprecedented privacy risks for the many. Handling storage and processing of large genome datasets through cloud services greatly aggravates these concerns. Current research efforts thus investigate the use of strong cryptographic methods and protocols to implement privacy-preserving genomic computations. We propose FHE-Bloom and PHE-Bloom, two efficient approaches for genetic disease testing using homomorphically encrypted Bloom filters. Both approaches allow the data owner to securely outsource storage and computation to an untrusted cloud. FHE-Bloom is fully secure in the semi-honest model while PHE-Bloom slightly relaxes security guarantees in a trade-off for highly improved performance. We implement and evaluate both approaches on a large dataset of up to 50 patient genomes each with up to 1000000 variations (single nucleotide polymorphisms). For both implementations, overheads scale linearly in the number of patients and variations, while PHE-Bloom is faster by at least three orders of magnitude. For example, testing disease susceptibility of 50 patients with 100000 variations requires only a total of 308.31 s (σ=8.73 s) with our first approach and a mere 0.07 s (σ=0.00 s) with the second. We additionally discuss security guarantees of both approaches and their limitations as well as possible extensions towards more complex query types, e.g., fuzzy or range queries. Both approaches handle practical problem sizes efficiently and are easily parallelized to scale with the elastic resources available in the cloud. The fully homomorphic scheme, FHE-Bloom, realizes a comprehensive outsourcing to the cloud, while the partially homomorphic scheme, PHE-Bloom, trades a slight relaxation of security guarantees against performance improvements by at least three orders of magnitude. Proceedings of the 5th iDASH Privacy and Security Workshop 2016 Secure outsourcing; Homomorphic encryption; Bloom filters sscilops; mynedata https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-ziegeldorf-bmcmedgenomics-bloom.pdf Online BioMed Central Chicago, IL, USA November 11, 2016 en 1755-8794 10.1186/s12920-017-0277-y 1 Jan HenrikZiegeldorf JanPennekamp DavidHellmanns FelixSchwinger IkeKunze MartinHenze JensHiller RomanMatzutt KlausWehrle inproceedings 2017-henze-tma-cloudemail 2017 6 21 trinics, ssiclops https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-henze-tma-cloudemail.pdf Online IEEE / IFIP Proceedings of the 2017 Network Traffic Measurement and Analysis Conference (TMA 2017), Dublin, Ireland en 978-3-901882-95-1 10.23919/TMA.2017.8002910 1 MartinHenze Mary PeytonSanford OliverHohlfeld inproceedings 2017-zimmermann-secon 2017 6 12 maki IEEE 14th IEEE International Conference on Sensing, Communication, and Networking (SECON 2017), San Diego, USA San Diego, USA 14th IEEE International Conference on Sensing, Communication, and Networking (SECON 2017) 12.06.2017 - 14.06.2017 en 978-1-5090-6599-8 10.1109/SAHCN.2017.7964939 1 TorstenZimmermann HannoWirtz Jan HenrikZiegeldorf ChristianSteinhaus KlausWehrle article dombrowski-vdi VDE Positionspapier 2017 6 1 VDE - Verband der Elektrotechnik, Elektronik, Informationstechnik e.V.

Stresemannallee 15, 60596 Frankfurt am Main, Germany

IsmetAktas AlexanderBentkus FlorianBonanati ArminDekorsy ChristianDombrowski MichaelDoubrava AliGolestani FrankHofmann MikeHeidrich StefanHiensch RüdigerKays MichaelMeyer AndreasMüller Stephanten Brink NedaPetreska MilanPopovic LutzRauchhaupt AhmadSaad HansSchotten ChristophWöste IngoWolff inproceedings 2017-serror-pads-cows 2017 5 24 memosim,symbiosys https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-serror-pads-cows.pdf ACM online Proceedings of the 5th ACM SIGSIM/PADS Conference on Principles of Advanced Discrete Simulation (SIGSIM-PADS’17), Singapore, Singapore Singapore, Singapore 5th ACM SIGSIM/PADS Conference on Principles of Advanced Discrete Simulation (SIGSIM-PADS’17) May 24-26, 2017 978-1-4503-4489-0 10.1145/3064911.3064913 1 MartinSerror Jörg ChristianKirchhof MirkoStoffers KlausWehrle JamesGross inproceedings 2017-serror-ew-koi 2017 5 17 koi https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-serror-radio-design-ew17.pdf IEEE Proc. of 23rd European Wireless Conference (EW17), Dresden, Germany Dresden, Germany Proc. of 23rd European Wireless Conference (EW17) 17.-19. May 2017 1 Shehzad AliAshraf Y.-P. EricWang SamehEldessoki BerndHolfeld DonaldParruca MartinSerror JamesGross conference 2017-fink-brainlab 2017 4 24 2 /fileadmin/papers/2017/2017-fink-brainlab.pdf http://informaticsforhealth.org/wp-content/uploads/2017/04/IFH2017-Digital-Programme.pdf 2017-05-09 Online Informatics for Health 2017, Manchester UK Manchester, UK Informatics for Health 2017, Manchester UK 24-26 April 2017 en 1 Ina BereniceFink BerndHankammer ThomasStopinsky RoannRamos EkaterinaKutafina Jó AgilaBitsch Link StephanJonas proceedings 2017-serror-netsys-industrial 2017 3 16 koi https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/Ansari_et_al_Wireless_Industrial_Automation_Demo_NetSys_2017.pdf IEEE Göttingen, Germany International Conference on Networked Systems (NetSys 2017) 10.1109/NetSys.2017.7931496 1 JunaidAnsari IsmetAktas ChristianBrecher ChristophPallasch NicolaiHoffmann MarkusObdenbusch MartinSerror KlausWehrle JamesGross incollection 2016-iiot-rueth-comm 2017 317-346 Online Jeschke, Sabina and Brecher, Christian and Song, Houbing and Rawat, Danda B. Springer Industrial Internet of Things en 978-3-319-42558-0 10.1007/978-3-319-42559-7_12 1 JanRüth FlorianSchmidt MartinSerror KlausWehrle TorstenZimmermann inproceedings 2017-matzutt-mynedata 2017 1073-1084 Personal user data is collected and processed at large scale by a handful of big providers of Internet services. This is detrimental to users, who often do not understand the privacy implications of this data collection, as well as to small parties interested in gaining insights from this data pool, e.g., research groups or small and middle-sized enterprises. To remedy this situation, we propose a transparent and user-controlled data market in which users can directly and consensually share their personal data with interested parties for monetary compensation. We define a simple model for such an ecosystem and identify pressing challenges arising within this model with respect to the user and data processor demands, legal obligations, and technological limits. We propose myneData as a conceptual architecture for a trusted online platform to overcome these challenges. Our work provides an initial investigation of the resulting myneData ecosystem as a foundation to subsequently realize our envisioned data market via the myneData platform. Presentation slides are in German Personal User Data, Personal Information Management, Data Protection Laws, Privacy Enhancing Technologies, Platform Design, Profiling mynedata_show https://www.comsys.rwth-aachen.de/fileadmin/papers/2017/2017-matzutt-informatik-mynedata.pdf https://www.comsys.rwth-aachen.de/fileadmin/misc/mynedata/talks/2017-matzutt-informatik-mynedata-presentation.pdf Presentation slides Eibl, Maximilian and Gaedke, Martin Gesellschaft für Informatik, Bonn INFORMATIK 2017 Chemnitz INFORMATIK 2017 2017-09-28 English 978-3-88579-669-5 1617-5468 10.18420/in2017_109 1 RomanMatzutt DirkMüllmann Eva-MariaZeissig ChristianeHorst KaiKasugai SeanLidynia SimonWieninger Jan HenrikZiegeldorf GerhardGudergan IndraSpiecker gen. Döhmann KlausWehrle MartinaZiefle inproceedings 2016-henze-cloudcom-trinics 2016 12 12 366-370 trinics https://www.comsys.rwth-aachen.de/fileadmin/papers/2016/2016-henze-cloudcom-trinics.pdf Online IEEE Proceedings of the 2016 IEEE International Conference on Cloud Computing Technology and Science (CloudCom), Luxembourg, Luxembourg en 978-1-5090-1445-3 10.1109/CloudCom.2016.0064 1 MartinHenze DanielKerpen JensHiller MichaelEggert DavidHellmanns ErikMühmer OussamaRenuli HenningMaier ChristianStüble RogerHäußling KlausWehrle inproceedings 2016-ahmed-sensys-poster-incremental 2016 11 14 1--2 We propose incremental checkpointing techniques enabling transiently powered devices to retain computational state across multiple activation cycles. As opposed to the existing approaches, which checkpoint complete program state, the proposed techniques keep track of modified RAM locations to incrementally update the retained state in secondary memory, significantly reducing checkpointing overhead both in terms of time and energy. /fileadmin/misc/2016/2016-ahmed-sensys-poster-incremental.pdf http://dl.acm.org/citation.cfm?id=2996701 2016-11-20 http://sensys.acm.org/2016/ Online ACM Proceedings of the 14th ACM Conference on Embedded Networked Sensor Systems (SenSys 2016), Stanford, CA, USA Stanford, CA, USA Sensys '16 November 14-16, 2016 en 978-1-4503-4263-6/16/11 http://dx.doi.org/10.1145/2994551.2996701 1 SaadAhmed HassanKhan Junaid HaroonSiddiqui Jó AgilaBitsch Link Muhammad HamadAlizai inproceedings 2016-henze-wpes-cppl 2016 10 24 99-110 ssiclops https://www.comsys.rwth-aachen.de/fileadmin/papers/2016/2016-henze-wpes-cppl.pdf Online ACM Proceedings of the 15th Workshop on Privacy in the Electronic Society (WPES), co-located with the 23rd ACM Conference on Computer and Communications Security (CCS), Vienna, Austria en 978-1-4503-4569-9 10.1145/2994620.2994627 1 MartinHenze JensHiller SaschaSchmerling Jan HenrikZiegeldorf KlausWehrle article 2015-cheng-piap-jmu JMIR Mhealth Uhealth 2016 7 20 4 3 e88 piap http://mhealth.jmir.org/2016/3/e88/ http://www.ncbi.nlm.nih.gov/pubmed/27439444 Online en 2291-5222 10.2196/mhealth.5284 1 Paula Glenda FerrerCheng Roann MunozRamos Jó AgilaBitsch Link Stephan MichaelJonas TimIx Portia Lynn QuetulioSee KlausWehrle inproceedings 2016-serror-wowmom-arq 2016 6 21 koi IEEE online 17th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (IEEE WoWMoM 2016), Coimbra, Portugal Coimbra, Portugal en 10.1109/WoWMoM.2016.7523534 1 MartinSerror YulinHu ChristianDombrowski KlausWehrle JamesGross inproceedings 2016-werner-networking-stean 2016 5 17 maki IEEE Proceedings of the 15th International IFIP Networking Conference (NETWORKING'16), Vienna, Austira Vienna, Austria IFIP Networking 2016 17.-19.5.2016 978-3-9018-8283-8 10.1109/IFIPNetworking.2016.7497203 1 MarcWerner JohannesSchwandtke MatthiasHollick OliverHohlfeld TorstenZimmermann KlausWehrle inproceedings 2016-stoffers-pads-memo 2016 5 15 221-232 Best Paper Award Automatic Memoization; Accelerating Parameter Studies; Impure Languages memosim,symbiosys http://www.comsys.rwth-aachen.de/fileadmin/papers/2016/2016-stoffers-pads-memoization.pdf Online ACM

New York, NY

Proceedings of the 4th ACM SIGSIM/PADS Conference on Principles of Advanced Discrete Simulation (SIGSIM-PADS’16), Banff, AB, Canada Banff, AB, Canada en 10.1145/2901378.2901386 1 MirkoStoffers DanielSchemmel OscarSoria Dustmann KlausWehrle article 2016-kunz-tomacs-horizon ACM Transactions on Modeling and Computer Simulation (TOMACS) 2016 1 26 2 12:1--12:26 The technical evolution of wireless communication technology and the need for accurately modeling these increasingly complex systems causes a steady growth in the complexity of simulation models. At the same time, multi-core systems have become the de facto standard hardware platform. Unfortunately, wireless systems pose a particular challenge for parallel execution due to a tight coupling of network entities in space and time. Moreover, model developers are often domain experts with no in-depth understanding of parallel and distributed simulation. In combination, both aspects severely limit the performance and the efficiency of existing parallelization techniques. We address these challenges by presenting parallel expanded event simulation, a novel modeling paradigm that extends discrete events with durations which span a period in simulated time. The resulting expanded events form the basis for a conservative synchronization scheme that considers overlapping expanded events eligible for parallel processing. We furthermore put these concepts into practice by implementing Horizon, a parallel expanded event simulation framework specifically tailored to the characteristics of multi-core systems. Our evaluation shows that Horizon achieves considerable speedups in synthetic as well as real-world simulation models and considerably outperforms the current state-of-the-art in distributed simulation. Parallel discrete event simulation, Multi-core Systems, Wireless Systems, Simulation Modeling Paradigm, Conservative Synchronization horizon ACM en 10.1145/2832909 1 GeorgKunz MirkoStoffers OlafLandsiedel KlausWehrle JamesGross phdthesis 2015-schmidt-heuristic-header-recovery 2015 12 31 refector Shaker Verlag GmbH

Aachen, Germany

Reports on Communications and Distributed Systems 12 RWTH Aachen University Chair of Communication and Distributed Systems Ph.D. Thesis 978-3844041743 FlorianSchmidt inproceedings 2015-serror-channel-coding 2015 12 koi file:1704 IEEE online IEEE GC 2015 Workshop on Ultra-Low Latency and Ultra-High Reliability in Wireless Communications (GC'15 - ULTRA2), San Diego, USA San Diego, USA IEEE GC 2015 Workshop on Ultra-Low Latency and Ultra-High Reliability in Wireless Communications December 6-10 2015 10.1109/GLOCOMW.2015.7414150 1 MartinSerror ChristianDombrowski KlausWehrle JamesGross inproceedings 2015-stoffers-mswim-data-deps 2015 11 2 291-300 Simulation of wireless systems is highly complex and can only be efficient if the simulation is executed in parallel. To this end, independent events have to be identified to enable their simultaneous execution. Hence, the number of events identified as independent needs to be maximized in order to increase the level of parallelism. Traditionally, dependencies are determined only by time and location of events: If two events take place on the same simulation entity, they must be simulated in timestamp order. Our approach to overcome this limitation is to also investigate data-dependencies between events. This enables event reordering and parallelization even for events at the same simulation entity. To this end, we design the simulation language PSimLa, which aids this process. In this paper, we discuss the PSimLa design and compiler as well as our data-dependency analysis approach in detail and present case studies of wireless network models, speeded up by a factor of 10 on 12 cores where time-based parallelization only achieves a 1.6x speedup. Best Paper Award Parallel simulation; Static code analysis; Data dependencies horizon http://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-stoffers-mswim-data-deps.pdf Online ACM

New York, NY

Proceedings of the 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, Cancún, Mexico (MSWiM'15) Cancún, Mexico en 10.1145/2811587.2811593 1 MirkoStoffers TorstenSehy JamesGross KlausWehrle inproceedings 2015-wirtz-wifi-sharing 2015 10 19-27 http://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-wirtz-lcn-cows.pdf Online IEEE 40th IEEE Conference on Local Computer Networks (LCN), Clearwater Beach, USA Clearwater Beach, Florida, USA 40th IEEE Conference on Local Computer Networks (LCN) October 26-29 2015 en 10.1109/LCN.2015.7366279 1 HannoWirtz TorstenZimmermann MartinSerror KlausWehrle poster serror-zdn-2015 2015 9 25 cps,koi,hodrian https://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-serror-zdn-cooperation.pdf http://kn.inf.uni-tuebingen.de/itg-zdn-2015-poster-session VDE online ITG-Fachtagung "Zukunft der Netze 2015" – Poster Session, Tübingen, Germany Tübingen, Germany MartinSerror ChristianDombrowski KlausWehrle JamesGross inproceedings 2015-schmidt-santa 2015 8 19 ssiclops https://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-schmidt-sigcomm-santa.pdf Online ACM Proceedings of the 43rd ACM SIGCOMM Conference (SIGCOMM '15), London, United Kingdom London, United Kingdom 43rd ACM SIGCOMM Conference (SIGCOMM '15) 17–21 August, 2015 en 10.1145/2785956.2790014 1 FlorianSchmidt OliverHohlfeld RenéGlebke KlausWehrle inproceedings 2015-wirtz-secon 2015 6 24 256-264 maki https://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-wirtz-secon-stif.pdf http://www.comsys.rwth-aachen.de/short/secon15-stif Online IEEE 12th IEEE International Conference on Sensing, Communication, and Networking (SECON 2015), Seattle, USA Seattle, USA 12th IEEE International Conference on Sensing, Communication, and Networking (SECON 2015) 22.06.2015 - 25.06.2015 en 10.1109/SAHCN.2015.7338324 1 HannoWirtz JanRüth MartinSerror TorstenZimmermann KlausWehrle inproceedings 2015-wowmom-schumacher-warpsim 2015 6 14 cps,koi file:1688 IEEE online 16th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks: Demos (IEEE WoWMoM 2015 - Demos), Boston, USA Boston, USA IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks 14.-17. June 2015 10.1109/WoWMoM.2015.7158181 1 AndreasSchumacher MartinSerror ChristianDombrowski JamesGross inproceedings 2015-stoffers-pads-data-deps 2015 6 10 73-74 horizon http://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-stoffers-pads-data-deps.pdf Online ACM

New York, NY

Proceedings of the 3rd ACM SIGSIM/PADS Conference on Principles of Advanced Discrete Simulation (SIGSIM-PADS’15), London, United Kingdom London, United Kingdom en 10.1145/2769458.2769487 1 MirkoStoffers TorstenSehy JamesGross KlausWehrle inproceedings 2015-bitsch-phealth-brain 2015 6 2 211 185 -- 190 Bringing brain research tools like EEG devices out of the lab into the pockets of practitioners and researchers may fundamentally change the way we perform diagnostics and research. While most of the current techniques are limited to research clinics and require excessive set-up, new consumer EEG devices connected to standard, off-the-shelf mobile devices allow us to lift these limitations. This allows neuropsychological assessment and research in mobile settings, possibly even in remote areas with limited accessibility and infrastructure, thus bringing the equip- ment to the patient, instead of bringing the patient to the equipment. We are developing an Android based mobile framework to perform EEG studies. By connecting a mobile consumer EEG headset directly to an unmodified mobile device, presenting auditory and visual stimuli, as well as user interaction, we create a self-contained experimental plat- form. We complement this platform by a toolkit for immediate evalua- tion of the recorded data directly on the device, even without internet connectivity. Initial results from the replication of two Event Related Potentials studies indicate the feasibility of the approach. fileadmin/papers/2015/2015-bitsch-phealth-brain.pdf Print Blobel, Bernd and Lindén, Maria and Ahmed, Mobyen Uddin IOS Press

Amsterdam

Studies in Health Technology and Informatics Proceedings of the 12th International Conference on Wearable Micro and Nano Technologies for Personalized Health Västerås, Sweden 12th International Conference on Wearable Micro and Nano Technologies for Personalized Health June 2-4, 2015 en 978-1-61499-515-9 0926-9630 10.3233/978-1-61499-516-6-185 1 Jó AgilaBitsch Link RoannRamos CassandraSeverijns KlausWehrle inproceedings virtualcoordinate_li_lin_stoffers_gross_2015 2015 5 20 http://dl.ifip.org/db/conf/networking/networking2015/1570067591.pdf Online IFIP

Laxenburg, Austria

Proc. of the 14th International IFIP TC6 Networking Conference (NETWORKING'15), Toulouse, France Toulouse, France en 10.1109/IFIPNetworking.2015.7145337 1 DiLi ZhichaoLin MirkoStoffers JamesGross proceedings 2015-sdnflex-heuschkel-dyns 2015 3 9 IEEE Cottbus SDNFlex Workshop (NetSys 2015) March 2015, 9-12 en 10.1109/NetSys.2015.7089055 1 JensHeuschkel ImmanuelSchweizer TorstenZimmermann KlausWehrle MaxMühlhäuser inproceedings 2015-ewsn-schmidt-canttaketheheat 2015 2 10 https://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-schmidt-ewsn-canttaketheheat.pdf Online Springer Proceedings of the 12th European Conference on Wireless Sensor Networks (EWSN 2015), Porto, Portugal Porto, Portugal 12th European Conference on Wireless Sensor Networks (EWSN 2015) 9-11 February, 2015 en 978-3-319-15581-4 10.1007/978-3-319-15582-1_19 1 FlorianSchmidt MatteoCeriotti NiklasHauser KlausWehrle phdthesis 2015-schimdt-phdthesis 2015 RWTH Aachen University FlorianSchmidt techreport 2015-aib-schmidt-hotbox 2014 12 4 AIB-2014-14 arXiv:1412.2257 [cs.NI] 1--17 senserr fileadmin/papers/2014/2014-schmidt-aib-hotbox.pdf Online Department of Computer Science, RWTH Aachen

Ahornstr. 55, 52074 Aachen, Germany

Department of Computer Science, RWTH Aachen Technical Report en 0935-3232 FlorianSchmidt MatteoCeriotti NiklasHauser KlausWehrle conference Schumacher2014 2014 11 19 hodrian,cps Proc. of European workshop on testbed based wireless research Stockholm, Sweden European workshop on testbed based wireless research 19/11/2014 AndreasSchumacher ChristianDombrowski JamesGross inproceedings 2014-aktas-wintech-a-framework-for-remote-automation-configuration-and-monitoring 2014 9 7 1--8 crawler fileadmin/papers/2014/2014-aktas-wintech-remote-cross-layer.pdf Online ACM Proceedings of the 9th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2014), Hawaii, USA Hawaii, USA 9th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2014) 7 September 2014 en 978-1-4503-3072-5 10.1145/2643230.2643236 1 IsmetAktas OscarPuñal FlorianSchmidt TobiasDrüner KlausWehrle inproceedings 2014-chants-wirtz-disco 2014 9 7 1-8 fileadmin/papers/2014/2014-wirtz-chants-challenged_iot.pdf online ACM Proceedings of the 9th ACM MobiCom Workshop on Challenged Networks (CHANTS 2014), Maui, USA Maui, Hawaii, USA Proceedings of the 9th ACM MobiCom Workshop on Challenged Networks (CHANTS 2014) 7 September 2014 en 978-1-4503-3071-8 10.1145/2645672.2645679 1 HannoWirtz JanRüth MartinSerror Jó AgilaBitsch Link KlausWehrle inproceedings 2014-stoffers-omnet-parallel-inet 2014 9 3 http://arxiv.org/pdf/1409.0994 arXiv:1409.0994 Online Cornell University

Ithaca, New York, United States

Proceedings of the 1st OMNeT++ Community Summit, Hamburg, Germany Hamburg, Germany en MirkoStoffers RalfBettermann JamesGross KlausWehrle inproceedings 2014-hummen-delegation 2014 6 30 284-292 iotsec; sensorcloud http://www.comsys.rwth-aachen.de/fileadmin/papers/2014/2014-hummen-secon-delegation.pdf Online IEEE 11th IEEE International Conference on Sensing, Communication, and Networking (SECON 2014) Singapore 11th IEEE International Conference on Sensor, Communication, and Networking (SECON 2014) 30.06. - 03.07.2014 en 10.1109/SAHCN.2014.6990364 1 RenéHummen HosseinShafagh ShahidRaza ThiemoVoigt KlausWehrle inproceedings 2014-schmidt-piccett 2014 6 24 refector https://www.comsys.rwth-aachen.de/fileadmin/papers/2014/2014-schmidt-iscc-piccett.pdf IEEE Proceedings of the 18th IEEE Symposium on Computers and Communications (ISCC), Madeira, Portugal en 10.1109/ISCC.2014.6912582 1 FlorianSchmidt MartinHenze KlausWehrle inproceedings 2014-aktas-punal-wowmom-machine-learning-based-jamming-detection-for-80211-conference Proceedings of the 15th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'14), Sydney, Australia 2014 6 16 1--10 crawler fileadmin/papers/2014/2014-aktas-wowmom-jammingdetection.pdf Online IEEE Proceedings of the 15th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'14), Sydney, Australia Sydney 15th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'14) 16-19 June, 2014 en 1 OscarPuñal IsmetAktas Caj-JulianSchnelke GloriaAbidin JamesGross KlausWehrle conference 2014-hohlfeld-harvester 2014 6 http://downloads.ohohlfeld.com/paper/harvesters-asiaccs2014.pdf http://asiaccs2014.nict.go.jp/ ACM 9th ACM Symposium on Information, Computer and Communications Security 10.1145/2590296.2590302 1 GianlucaStringhini OliverHohlfeld ChristopherKruegel GiovanniVigna inproceedings 2014-stoffers-simutools-distributed-horizon 2014 3 17 31-40 horizon http://www.comsys.rwth-aachen.de/fileadmin/papers/2014/2014-stoffers-simutools-distributed-horizon.pdf Online ICST

Brussels, Belgium

Proceedings of the 7th International ICST Conference on Simulation Tools and Techniques (SIMUTools'14), Lisbon, Portugal Lisbon, Portugal en 978-1-63190-007-5 10.4108/icst.simutools.2014.254622 1 MirkoStoffers SaschaSchmerling GeorgKunz JamesGross KlausWehrle techreport 2013-schmidt-rtp-extended 2013 12 20 AIB-2013-19 arXiv:1312.5892 [cs.NI] 1--24 refector fileadmin/papers/2013/2013-schmidt-aib-rtp.pdf Online Department of Computer Science, RWTH Aachen

Ahornstr. 55, 52074 Aachen, Germany

Department of Computer Science, RWTH Aachen Technical Report en 0935-3232 FlorianSchmidt DavidOrlea KlausWehrle techreport 2013-draft-hummen-dtls-extended-session-resumption-01 2013 10 18 draft-hummen-dtls-extended-session-resumption-01 This draft defines two extensions for the existing session resumption mechanisms of TLS that specifically apply to Datagram TLS (DTLS) in constrained network environments. Session resumption type negotiation enables the client and the server to explicitly agree on the session resumption mechanism for subsequent handshakes, thus avoiding unnecessary overheads occurring with the existing specifications. Session resumption without client-side state additionally enables a constrained DTLS client to resume a session without the need to maintain state while the session is inactive. The extensions defined in this draft update [RFC5077] and [RFC5246]. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-hummen-dtls-extended-session-resumption-01 Online Internet Engineering Task Force Internet-Draft en RenéHummen JohannesGilger HosseinShafagh article 2013-elsevir-aktas-harnessing-cross-layer-design Elsevir Ad-hoc Networks 2013 10 1 crawler 1 IsmetAktas Muhammad HamadAlizai FlorianSchmidt HannoWirtz KlausWehrle article 2013-raza-lithe IEEE Sensors Journal 2013 10 13 10 3711-3720 Internet of Things;operating systems (computers);personal area networks;protocols;security of data;6LoWPAN standard;Contiki operating system;DTLS;Internet of Things;IoT;Lithe;authenticated confidential communication;constrained application protocol;datagram transport layer security;e-health domain;end-to-end security;lightweight secure CoAP;resource-constrained devices;Encoding;Internet;Payloads;Protocols;Security;Sensors;Standards;6LoWPAN;CoAP;CoAPs;DTLS;IoT;security iotsec en 1530-437X 10.1109/JSEN.2013.2277656 1 ShahidRaza HosseinShafagh KasunHewage RenéHummen ThiemoVoigt inproceedings 2013-wintech-schmidt-senserr 2013 9 30 49--56 https://www.comsys.rwth-aachen.de/fileadmin/papers/2013/2013-schmidt-wintech-errors.pdf Online ACM Proceedings of the 8th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2013), Miami, USA Miami, USA 8th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2013) 30 September 2013 en 10.1145/2505469.2505475 1 FlorianSchmidt MatteoCeriotti KlausWehrle techreport 2013-draft-garcia-core-security-06 2013 9 11 draft-garcia-core-security-06 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-06 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik inproceedings 2013-smith-extremecom-demo 2013 8 24 1--2 won "coolest demo award" fileadmin/papers/2013/2013-smith-extremecom-opportunistic-deployment-support.pdf Online Hui, Pan and Lindgren, Anders ACM Proceedings of the 5th Extreme Conference on Communication Thorsmork, Iceland 5th Extreme Conference on Communication August 24-30, 2013 en 978-1-4503-2171-6 1 PaulSmith Jó AgilaBitsch Link KlausWehrle inproceedings Dombrowski2013WiOpt 2013 5 13 341-348 energy minimization;quality-of-service;outage probability;deadline;optimization;multi-hop;average csi;instantaneous csi 11th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt 2013) Tsukuba Science City, Japan English 1 ChristianDombrowski NedaPetreska SimonGörtzen AnkeSchmeink JamesGross inproceedings 2013-hummen-towards 2013 4 19 iotsec fileadmin/papers/2013/2013-hummen-towards.pdf ACM Proceedings of the 2nd ACM Workshop on Hot Topics on Wireless Network Security and Privacy (HotWiSec '13) Budapest, Hungary 2nd ACM Workshop on Hot Topics on Wireless Network Security and Privacy en 978-1-4503-2003-0 10.1145/2463183.2463193 1 RenéHummen Jan HenrikZiegeldorf HosseinShafagh ShahidRaza KlausWehrle inproceedings 2013-hummen-6lowpan 2013 4 17 iotsec; sensorcloud fileadmin/papers/2013/2013-hummen-6lowpan.pdf ACM Proceedings of the 6th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '13) Budapest, Hungary 6th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '13) en 978-1-4503-1998-0 10.1145/2462096.2462107 1 RenéHummen JensHiller HannoWirtz MartinHenze HosseinShafagh KlausWehrle inproceedings 2013-schmidt-wons-rtp 2013 3 19 186--190 refector fileadmin/papers/2013/2013-schmidt-wons-rtp-refector.pdf Online IEEE Proceedings of the 10th International Conference on Wireless On-demand Network Systems and Services (WONS'13), Banff, Canada Banff, Canada 10th International Conference on Wireless On-demand Network Systems and Services (WONS'13) 17-20 March 2013 en 978-1-4799-0747-2 10.1109/WONS.2013.6578345 1 FlorianSchmidt DavidOrlea KlausWehrle techreport 2013-draft-garcia-core-security-05 2013 3 11 draft-garcia-core-security-05 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-05 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik phdthesis 2013-sasnaukas-phdthesis 2013 RWTH Aachen University RaimondasSasnaukas inproceedings 2012-IPIN-Peter-Versatile-Maps 2012 11 13 1--4 fileadmin/papers/2012/2012-bitsch-IPIN-vegemite.pdf http://www.surveying.unsw.edu.au/ipin2012/proceedings/session.php?code=6C&name=SLAM Online Li, Binghao Li and Gallagher, Thomas School of Surveying and Geospatial Engineering, University of New South Wales, Sydney, Australia Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Sydney, Australia Sydney, Australia 2012 International Conference on Indoor Positioning and Indoor Navigation November 13--15, 2012 en 978-0-646-57851-4 1 MichaelPeter DieterFritsch BernhardtSchäfer AlfredKleusberg Jó AgilaBitsch Link KlausWehrle inproceedings 2012-IPIN-Bitsch-FlowPath 2012 11 13 10 S. fileadmin/papers/2012/2012-bitsch-IPIN-navigation-on-wheels.pdf http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6418931 Print

Piscataway, NJ, USA

Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 11-13 November 2012 Sydney, Australia IEEE Sydney, Australia 2012 International Conference on Indoor Positioning and Indoor Navigation November 13--15, 2012 en 978-1-4673-1955-3 10.1109/IPIN.2012.6418931 1 Jó AgilaBitsch Link FelixGerdsmeier PaulSmith KlausWehrle article 2012-stoffers-pik-probabilistic-sync Praxis der Informationsverarbeitung und Kommunikation (PIK Journal) 2012 11 35 4 297--304 horizon http://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-stoffers-probabilistic-sync.pdf http://www.degruyter.com/view/j/piko-2012-35-issue-4/pik-2012-0042/pik-2012-0042.xml?format=INT Print Otto Spaniol De Gruyter en 0930-5157 10.1515/pik-2012-0042 MirkoStoffers article 2012-soriadustmann-pik-effizient-sde Praxis der Informationsverarbeitung und Kommunikation (PIK Journal) 2012 11 35 4 289–295 Zum Testen verteilter bzw. vernetzter Systeme existieren zahlreiche Werkzeuge, welche für das Rapid Prototyping und die Fehler-Rekonstruktion unerlässlich sind. Durch verschieden stark abstrahierte Modelle lassen sich auf diese Weise, bereits früh in der Entwicklung verteilter Systeme, Aussagen über Performanz, Konsistenz und Korrektheit von Netzwerkprotokollen treffen. Diese Verfahren arbeiten auf explizit für den Testvorgang entworfenen Modellimplementierungen, welche zwar teilweise Quelltext mit der Produktionssoftware gemein haben, aber viele Aspekte und potentielle Fehlerquellen einer tatsächlichen Software unberücksichtigt lassen. In diesem Artikel werden die Grundlagen von Testparadigmen beschrieben, welche die Ausführung unmodifizierter Software erlauben und dabei ermöglichen, eine hohe Zuversicht in die getesteten Systeme zu gewinnen. Der Fokus liegt dabei auf der Optimierung von Algorithmen um die redundante Ausführung des Systems zu minimieren, wodurch sich die zum Testen benötigte Zeit um Größenordnungen verringert. http://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-soriadustmann-pik-effizient-sde.pdf http://www.degruyter.com/view/j/piko-2012-35-issue-4/pik-2012-0043/pik-2012-0043.xml?format=INT Print Otto Spaniol De Gruyter de 0930-5157 10.1515/pik-2012-0043 OscarSoria Dustmann inproceedings 2012-mass-wirtz-dlsd 2012 10 10 S. fileadmin/papers/2012/2012-mass-wirtz-dlsd.pdf Online IEEE Computer Society

Washington, DC, USA

Proceedings of The Ninth IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE MASS 2012), October 8-11 2012, Las Vegas, NV, USA Las Vegas, USA Ninth IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE MASS 2012) 8-11 October 2012 en 978-1-4673-2433-5 10.1109/MASS.2012.6502498 1 HannoWirtz TobiasHeer MartinSerror KlausWehrle inproceedings 2012-wripe-sasnauskas-symnet 2012 10 6 S. kleenet fileadmin/papers/2012/2012-09-wripe-sasnauskas-SymNet.pdf Print Online

Piscataway, NJ, USA

The 2nd International Workshop on Rigorous Protocol Engineering (WRiPE 2012), 30 October - 02 November 2012, Austin, TX, USA IEEE Austin, TX, USA The 2nd International Workshop on Rigorous Protocol Engineering (WRiPE 2012) October 30 - November 02 2012 en 978-1-4673-2445-8 10.1109/ICNP.2012.6459940 1 RaimondasSasnauskas PhilippKaiser Russ LucasJukić KlausWehrle inproceedings 2012-pimrc-schmidt-ofra 2012 9 10 1--7 Classical 802.11 rate adaptation algorithms rely on feedback from the receiver to correctly choose a sending rate, typically in the form of acknowledgments (ACKs). In the absence of such frames, novel techniques are required for rate selection. We present OFRA, a receiver-based rate adaptation algorithm that works with ACK-less traffic. Feedback information is sent on-demand using a control frame to explicitly inform the transmitter about which bit rate to use on subsequent data frames. This approach guarantees standard conformity and exhibits fast and accurate bit rate adaptation at the cost of a modest overhead increase. We evaluate the performance of OFRA against various state-of-the-art rate adaptation schemes by means of simulations. If ACK frames are to be transmitted, OFRA performs better than related work in most considered scenarios, and on par in the others. In the absence of ACKs, OFRA provides large goodput gains under good channel conditions and comparable goodput in other situations. OFRA refector fileadmin/papers/2012/2012-schmidt-pimrc-ofra.pdf Online IEEE Proceedings of the 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'12), Sydney, Australia Sydney, Australia 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'12) 9-12 September 2012 en 978-1-4673-2566-0 2166-9570 10.1109/PIMRC.2012.6362818 1 FlorianSchmidt AnwarHithnawi OscarPuñal JamesGross KlausWehrle inproceedings 2012-aktas-new2an-AnAdaptiveCodecSwitchingSchemeforSIPbasedVoIP-conference Proceedings of the 12th International Conference on Next Generation Wired/Wireless Networking (NEW2AN 2012) 2012 8 27 1-12 Contemporary Voice-Over-IP (VoIP) systems typically ne- gotiate only one codec for the entire VoIP session life time. However, as different codecs perform differently well under certain network conditions like delay, jitter or packet loss, this can lead to a reduction of quality if those conditions change during the call. This paper makes two core contributions: First, we compare the speech quality of a set of stan- dard VoIP codecs given different network conditions. Second, we propose an adaptive end-to-end based codec switching scheme that fully conforms to the SIP standard. Our evaluation with a real-world prototype based on Linphone shows that our codec switching scheme adapts well to changing network conditions, improving overall speech quality. crawler fileadmin/papers/2012/2012-aktas-new2an-codecswitching.pdf Online LNCS Proceedings of the 12th International Conference on Next Generation Wired/Wireless Networking (NEW2AN 2012), St. Pettersburg, Russia. St. Pettersburg, Russia 12th International Conference on Next Generation Wired/Wireless Networking (NEW2AN 2012) 27-29 August, 2012 en 978-3-642-32685-1 10.1007/978-3-642-32686-8_32 1 IsmetAktas FlorianSchmidt EliasWeingaertner Caj-JulianSchnelke KlausWehrle inproceedings 2012-stoffers-mascots-ns3-propagation-models 2012 8 61--67 nonRWTH https://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-stoffers-ns3-propagation-models.pdf http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6298165 Print IEEE Proceedings of the 20th Annual Meeting of the IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS'12), Washington D.C., USA Washington D.C., USA 20th Annual Meeting of the IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS'10) en 978-1-4673-2453-3 10.1109/MASCOTS.2012.17 1 MirkoStoffers GeorgeRiley inproceedings 2012-kunz-pads-gpu 2012 7 20 23--32 horizon https://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-kunz-pads-gpu.pdf Print IEEE Proceedings of the 26th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS'12), Zhangjiajie, China en 978-0-7695-4714-5 1087-4097 10.1109/PADS.2012.27 1 GeorgKunz DanielSchemmel JamesGross KlausWehrle article 2012-JLBS-Bitsch-FootPath Journal of Location Based Services 2012 7 11 7 1 23-43 We present FootPath, a self-contained, map-based indoor navigation system. Using only the accelerometer and the compass readily available in modern smartphones, we accurately localise a user on her route and provide her with turn-by-turn instructions to her destination. To compensate for inaccuracies in step detection and heading estimation, we match the detected steps onto the expected route using sequence alignment algorithms from the field of bioinformatics. As our solution integrates well with OpenStreetMap, it allows painless and cost-efficient collaborative deployment, without the need for additional infrastructure. http://www.tandfonline.com/doi/abs/10.1080/17489725.2012.692620 Online Taylor & Francis

Bristol, PA, USA

en 1748-9733 10.1080/17489725.2012.692620 1 Jó AgilaBitsch Link PaulSmith NicolaiViol KlausWehrle inproceedings 2012-stoffers-pads-hybrid-simulation 2012 7 111--119 nonRWTH https://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-stoffers-hybrid-simulation.pdf http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6305897 Print IEEE Proceedings of the 26th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS'12), Zhangjiajie, China Zhangjiajie, China en 978-0-7695-4714-5 1087-4097 10.1109/PADS.2012.22 1 MirkoStoffers GeorgeRiley inproceedings 2012-aktas-wowmom-CRAWLER:AnExperimentationPlatformforSystemMonitoringandCross-Layer-Coordination-conference Proceedings of the 13th International Symposium on a World of Wireless, Mobile and MultimediaNetworks (WoWMoM'12), San Francisco, USA 2012 6 25 1--9 crawler fileadmin/papers/2012/2012-aktas-wowmom-crawler.pdf Online IEEE Proceedings of the 13th International Symposium on a World of Wireless, Mobile and MultimediaNetworks (WoWMoM'12), San Francisco, USA San Francisco 13th International Symposium on a World of Wireless, Mobile and MultimediaNetworks (WoWMoM'12) 25-28 June, 2012 en 978-1-4673-1238-7 10.1109/WoWMoM.2012.6263686 1 IsmetAktas FlorianSchmidt Muhammad HamadAlizai TobiasDrüner KlausWehrle inproceedings 2012-taicpart-dustmann-symbolic-time 2012 4 We propose an extension of symbolic execution of distributed systems to test software parts related to timing. Currently, the execution model is limited to symbolic input for individual nodes, not capturing the important class of timing errors resulting from varying network conditions. In this paper, we introduce symbolic system time in order to systematically find timing-related bugs in distributed systems. Instead of executing time events at a concrete time, we execute them at a set of times and analyse possible event interleavings on demand. We detail on the resulting problem space, discuss possible algorithmic optimisations, and highlight our future research directions. kleenet fileadmin/papers/2012/2012-04-taicpart-soriadustmann-symtime.pdf TAICPART'2012 en 1 OscarSoria Dustmann RaimondasSasnauskas KlausWehrle techreport 2012-draft-garcia-core-security 2012 3 26 draft-garcia-core-security-04 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-04 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik inproceedings 2012-kunz-simutools-probabilistic-sync 2012 3 20 119-128 horizon https://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-kunz-simutools-prob-synch.pdf Online ICST

Brussels, Belgium

Proceedings of the 5th International ICST Conference on Simulation Tools and Techniques (SIMUTools'12), Desenzano del Garda, Italy Desenzano, Italy en 978-1-4503-1510-4 10.4108/icst.simutools.2012.247716 1 GeorgKunz MirkoStoffers JamesGross KlausWehrle inproceedings 2012-aktas-simutools-FANTASY:FullyAutomaticNetworkEmulationArchitecturewithCross-LayerSupport-conference 2012 3 19 57-64 crawler, fantasy fileadmin/papers/2012/2012-aktas-simutools-fantasy.pdf http://dl.acm.org/citation.cfm?id=2263019&CFID=88550183&CFTOKEN=31687193 Online ICST

Brussels, Belgium

Proceedings of the 5th ACM International ICST Conference on Simulation Tools and Techniques (SIMUTools '12), Desenzano del Garda, Italy Desenzano, Italy 5th ACM International ICST Conference on Simulation Tools and Techniques (SIMUTools '12) 19-23 March, 2012 en 978-1-4503-1510-4 10.4108/icst.simutools.2012.247759 1 IsmetAktas Hendrikvom Lehn ChristophHabets FlorianSchmidt KlausWehrle inproceedings 2011-12-conext-schmidt-refector 2011 12 6 1--12 refector fileadmin/papers/2011/2011-schmidt-refector-conext.pdf Online ACM

New York, NY, USA

Proceedings of the 7th International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Tokyo, Japan Tokyo, Japan 7th ACM International Conference on emerging Networking EXperiments and Technologies (CoNEXT) 6-9 December, 2011 en 978-1-4503-1041-3 10.1145/2079296.2079318 1 FlorianSchmidt Muhammad HamadAlizai IsmetAktas KlausWehrle inproceedings 2011-globecom-bitsch-geodtn 2011 12 5 1 -- 5 In this paper we present a disruption tolerant routing algorithm based on geographic location information, which improves upon the hop count compared to the current state of the art by up to a factor of three in large scale human networks. Leveraging only the history of geographic movement patterns in the two-hop neighborhood, our algorithm is able to perform well in the absence of knowledge of social interaction between nodes and without detailed future schedule information. Representing previously visited locations as probability distributions encoded in an efficient vector, we formalize a heuristic for efficiently forwarding messages in disruption tolerant networks, implement a framework for comparing our approach with the state of the art, and evaluate key metrics, such as hop count and delivery rate, as well as energy consumption and battery depletion fairness on real world data. We are able to outperform the state of the art in human mobility based networks considerably in terms of energy usage per node, thereby extending data network availability further into areas devoid of otherwise necessary communication infrastructure. fileadmin/papers/2011/2011-GlobeCom-bitsch-geoDTN.pdf Online

Piscataway, NJ, USA

IEEE GLOBECOM 2011 - Next Generation Networking Symposium (GC'11 - NGN), Houston, Texas, USA IEEE Houston, Texas, USA IEEE GLOBECOM 2011 - Next Generation Networking Symposium (GC'11 - NGN) 5-9 December 2011 en 978-1-4244-9268-8 1930-529X 1 Jó AgilaBitsch Link DanielSchmitz KlausWehrle techreport 2011-draft-garcia-core-security-03 2011 10 31 draft-garcia-core-security-03 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-03 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik inproceedings 2011-extremecom-bitsch-neighbordiscovery 2011 9 26 1--6 We present an energy efficient neighbor discovery framework that enables Linux and TinyOS based systems to discover and connect to neighbors via IEEE 802.11 and IEEE 802.15.4, which are only available sporadically. Using quorum schemes, we schedule on and off times of the wireless transmitters, to guarantee mutual discovery with minimum power given a specific latency requirement. Neighbor discovery is fundamental to intermittently connected networks, such as disruption and delay tolerant networks and optimizing it, can lead to significant overall energy savings. Using perfect difference sets, our results indicate that we reduce the latency by up to 10 times at a duty cycle of 2% compared to the state of the art. We further define and characterize our neighbor discovery scheme with respect to fairness for asymmetric energy scenarios. Using these results, we allow energy-harvesting applications to adjust neighbor discovery based on their current energy requirements as a well defined trade-off. Neighbor Discovery; Sporadic Connectivity; Wireless Networks fileadmin/papers/2011/2011-ExtremeCom-bitsch-NeighborDiscovery.pdf http://www.cl.cam.ac.uk/~fb375/extremecom/2011/program.html http://dl.acm.org/citation.cfm?id=2414398&CFID=194814085&CFTOKEN=73001357 Online Hui, Pan and Lindgren, Anders ACM Proceedings of the 3rd Extreme Conference of Communication (ExtremeCom 2011), Manaus, Brazil Manaus, Brazil ExtremeCom 2011 26-30 September 2011 en 978-1-4503-1079-6 1 Jó AgilaBitsch Link ChristophWollgarten StefanSchupp KlausWehrle inproceedings 2011-ipin-bitsch-footpath-long 2011 9 21 1--8 We present FootPath, a self-contained, map-based indoor navigation system. Using only the accelerometer and the compass readily available in modern smartphones we accurately localize a user on her route, and provide her with turn-by-turn instructions to her destination. To compensate for inaccuracies in step detection and heading estimation, we match the detected steps onto the expected route using sequence alignment algorithms from the field of bioinformatics. As our solution integrates well with OpenStreetMap, it allows painless and cost-efficient collaborative deployment, without the need for additional infrastructure. footpath fileadmin/papers/2011/2011-IPIN-bitsch-footpath-long.pdf http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6071934&tag=1 Online IEEE Proceedings of the 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Guimaraes, Portugal Guimarães, Portugal 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN) 21-23 September 2011 en 978-1-4577-1803-8 http://dx.doi.org/10.1109/IPIN.2011.6071934 1 Jó AgilaBitsch Link PaulSmith NicolaiViol KlausWehrle inproceedings 2011-ipin-bitsch-footpath 2011 9 21 1--4 We present FootPath, a self-contained, map-based indoor navigation system. Using only the accelerometer and the compass readily available in modern smartphones we accurately localize a user on her route, and provide her with turn-by-turn instructions to her destination. To compensate for inaccuracies in step detection and heading estimation, we match the de- tected steps onto the expected route using sequence alignment algorithms from the field of bioinformatics. As our solution integrates well with OpenStreetMap, it allows painless and cost-efficient collaborative deployment, without the need for additional infrastructure. short paper (long paper is also available) footpath fileadmin/papers/2011/2011-IPIN-bitsch-footpath.pdf http://ipin2011.dsi.uminho.pt/PDFs/Shortpaper/17_Short_Paper.pdf fileadmin/papers/2011/2011-IPIN-bitsch-footpath-slides.pdf Online IEEE Proceedings of the 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Guimaraes, Portugal Guimarães, Portugal 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN) 21-23 September 2011 en 978-972-8692-63-6 1 Jó AgilaBitsch Link PaulSmith KlausWehrle techreport 2011-draft-garcia-core-security-02 2011 7 11 draft-garcia-core-security-02 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-02 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik inproceedings 2011-icdcs-sasnauskas-sde 2011 6 333-342 Recent advances in symbolic execution have proposed a number of promising solutions to automatically achieve high-coverage and explore non-determinism during testing. This attractive testing technique of unmodified software assists developers with concrete inputs and deterministic schedules to analyze erroneous program paths. Being able to handle complex systems' software, these tools only consider single software instances and not their distributed execution which forms the core of distributed systems. The step to symbolic distributed execution is however steep, posing two core challenges: (1) additional state growth and (2) the state intra-dependencies resulting from communication. In this paper, we present SDE—a novel approach enabling scalable symbolic execution of distributed systems. The key contribution of our work is two-fold. First, we generalize the problem space of SDE and develop an algorithm significantly eliminating redundant states during testing. The key idea is to benefit from the nodes' local communication minimizing the number of states representing the distributed execution. Second, we demonstrate the practical applicability of SDE in testing with three sensornet scenarios running Contiki OS. kleenet fileadmin/papers/2011/2011-06-icdcs-sasnauskas-sde.pdf Druck IEEE Computer Society

Los Alamitos, CA, USA

Proceedings of the 31st IEEE International Conference on Distributed Computing Systems (ICDCS 2011), June 2011, Minneapolis, MN, USA en 978-0-7695-4364-2 1063-6927 10.1109/ICDCS.2011.28 1 RaimondasSasnauskas OscarSoria Dustmann Benjamin LucienKaminski CarstenWeise StefanKowalewski KlausWehrle inproceedings 2011-nsdi-slicetime-weingaertner 2011 3 30 https://www.comsys.rwth-aachen.de/fileadmin/papers/2011/2011-weingaertner-nsdi-slicetime-camera_ready_14P.pdf Online USENIX

Berkeley, CA, USA

Proceedings of the 8th USENIX Symposium on Networked Systems Design and Implementation (NSDI '11), Boston, MA, USA Boston, Massachusetts en 1 EliasWeingaertner FlorianSchmidt Hendrikvom Lehn TobiasHeer KlausWehrle article 22011-itag-samad-cadplus Lecture Notes in Informatics GI-Edition 2011 3 25 S-10 Informatiktage 2011 279-282 Druck Köllen Verlag GmbH

Bonn, Germany

Gesellschaft für Informatik (GI) S-10 en 978-3-88579- 444-8 1614-3213 ShankarKaruppayah FahadSamad inproceedings 2011-kunz-omnetpp-horizon 2011 3 21 359-366 Developing an efficient parallel simulation framework for multiprocessor systems is hard. A primary concern is the considerable amount of parallelization overhead imposed on the event handling routines of the simulation framework. Besides more complex event scheduling algorithms, the main sources of overhead are thread synchronization and locking of shared data structures. As a result, the overhead of parallelization may easily outweigh the benefits of parallelization in comparison to classic sequential simulation. We introduce two efficient event handling schemes based on our parallel-simulation extension Horizon for the OMNeT++ simulator.First, we present a \emph{push-based event handling scheme} to minimize the overhead of thread synchronization and locking. Second, we complement this scheme with a novel \emph{event scheduling algorithm} that significantly reduces the overhead of parallel event scheduling. Lastly, we prove the correctness of our scheduling algorithm. Our evaluation reveals a total reduction in the event handling overhead of up to 16x when combining both schemes. horizon fileadmin/papers/2011/2011-kunz-horizon-omnetworkshop.pdf Online ICST

Brussels, Belgium

Proceedings of the 4th International Workshop on OMNeT++ (OMNeT++'11), Barcelona, Spain Barcelona, Spain 4th International Workshop on OMNeT++ (OMNeT++'11) March 21, 2011 en 978-1-936968-00-8 10.4108/icst.simutools.2011.245504 1 GeorgKunz MirkoStoffers JamesGross KlausWehrle techreport 2011-draft-garcia-core-security-01 2011 3 14 draft-garcia-core-security-01 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-01 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik techreport 2011-draft-garcia-core-security-00 2011 3 7 draft-garcia-core-security-00 A direct interpretation of the Internet of Things concept refers to the usage of standard Internet protocols to allow for human-to-thing or thing-to-thing communication. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. This Internet-Draft first provides an overview of security architecture, its deployment model and general security needs in the context of the lifecycle of a thing. Then, it presents challenges and requirements for the successful roll-out of new applications and usage of standard IP-based security protocols when applied to get a functional Internet of Things. Work in progress iotsec; ietf http://tools.ietf.org/html/draft-garcia-core-security-00 Online Internet Engineering Task Force Internet-Draft en OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar RenéHummen RenéStruik article 2011-03-Zimmermann Wireless Communications and Mobile Computing 2011 3 11 3 321-337 Online John Wiley & Sons Ltd.

Hoboken, NJ, USA

en 10.1002/wcm.982 1 AlexanderZimmermann ArndHannemann BenjaminSchleinzer inproceedings 2010-krebs-Globecom10-clustering-mesh-conference 2010 12 1 1-5 In the past, many clustering algorithms for ad-hoc networks have been proposed. Their main objective is to solve the scalability issue of ad-hoc networks by grouping nodes into clusters. The challenge in MANETs for those clustering algorithms is to cope with the high node mobility which affects the stability of the cluster structures. Wireless mesh networks consist of a static backbone and a number of mobile nodes. In the backbone of a wireless mesh network the topology is relatively static. However, topology changes occur due to frequent link losses and temporary link instability. Due to the static nature of the backbone, mobility-based approaches are not suitable in this case. In this paper, we state the important aspects for stable clustering in wireless mesh networks with unidirectional links based on the investigation of a 45-node wireless mesh testbed. We analyze well-known clustering algorithms and their performance in a large-scale testbed. Finally, we propose a new clustering algorithm called Stable Link Clustering Algorithm (SLCA). fileadmin/papers/2010/2010-lora-clustering-MESH.pdf http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5683417 Print IEEE Proceedings of the IEEE Global Telecommunications Conference GLOBECOM 2010, Miami, USA Miami, FL, USA IEEE Global Telecommunications Conference, GLOBECOM 2010 6 - 10 December 2010 en 978-1-4244-5636-9 10.1109/GLOCOM.2010.5683417 1 MartinKrebs AndréStein Mónica AlejandraLora Girón inproceedings 2010-sensys-sasnauskas-coojakleenet 2010 11 383--384 High-coverage testing of sensornet applications is vital for pre-deployment bug cleansing, but has previously been difficult due to the limited set of available tools. We integrate the KleeNet symbolic execution engine with the COOJA network simulator to allow for straight-forward and intuitive high-coverage testing initiated from a simulation environment. A tight coupling of simulation and testing helps detect, narrow down, and fix complex interaction bugs in an early development phase. We demonstrate the seamless transition between COOJA simulation and KleeNet symbolic execution. Our framework enables future research in how high-coverage testing tools could be used in cooperation with simulation tools. kleenet fileadmin/papers/2010/2010-osterlind_sasnauskas-sensys-coojakleenet.pdf Print ACM

New York, NY, USA

Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems (SenSys 2010), Zurich, Switzerland en 978-1-4503-0344-6 http://doi.acm.org/10.1145/1869983.1870034 1 FredrikÖsterlind RaimondasSasnauskas AdamDunkels OscarSoria Dustmann KlausWehrle inproceedings schleinzer10 2010 10 16 Online ACM PLoP 2010, Reno, NV, USA Reno PLoP 2010 unpublished en 1 BenjaminSchleinzer NobukazuYoshioka conference 2010-08-lcn-samad-ASSA 2010 10 11 1 752-755 Online IEEE The 10th IEEE Wireless Local Networks(WLN 2010) in the 35th IEEE Local Computer Networks (LCN 2010), Denver, Colorado, U.S.A. Denver, Colorado, United States IEEE Local Computer Networks (IEEE LCN 2010) 11-14 Oct. 2010 en 978-1-4244-8388-4 FahadSamad SadeqAli Makram inproceedings 2010softcomweingaertnerprotocolanalysis 2010 9 23 225 - 229 available in IEEE Xplore https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-weingaertner-softcom-analysis.pdf Online FESB

Split, Croatia

Proceedings of the 18th International Conference on Software, Telecommunications and Computer Networks (SoftCOM 2010) Hvar, Croatia en 978-1-4244-8663-2 1 EliasWeingaertner MarkoRitter RaimondasSasnauskas KlausWehrle conference 2010-08-icccn-samad-PiCAT IEEE ICCCN 2010 2010 8 2 1 1 - 7 Online IEEE Medienkombination The 19th International Conference on Computer Communications and Networks (ICCCN 2010), Zurich, Switzerland Zurich, Switzerland 19th International Conference on Computer Communications and Networks (ICCCN 2010) August 2–5, 2010 en 978-1-4244-7114-0 1095-2055 10.1109/ICCCN.2010.5560076 FahadSamad SadeqAli Makram inbook 2010-simtools-sasnauskas-transport 2010 6 389-399 Print Klaus Wehrle, Mesut Guenes, James Gross Springer

Germany

17 Modeling and Tools for Network Simulation en 978-3-642-12330-6 1 RaimondasSasnauskas EliasWeingaertner inproceedings icc2010vpsim 2010 5 23 1-6 Nowadays, the development of embedded system hardware and related system software is mostly carried out using virtual platform environments. The high level of modeling detail (hardware elements are partially modeled in a cycle-accurate fashion) is required for many core design tasks. At the same time, the high computational complexity of virtual platforms caused by the detailed level of simulation hinders their application for modeling large networks of embedded systems. In this paper, we propose the integration of virtual platforms with network simulations, combining the accuracy of virtual platforms with the versatility and scalability of network simulation tools. Forming such a hybrid toolchain facilitates the detailed analysis of embedded network systems and related important design aspects, such as resource effectiveness, prior to their actual deployment. https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-schuermans-weingaertner-network_centric.pdf Online IEEE Proceedings of the IEEE International Conference on Communications (ICC), Cape Town, South Africa, May 23-27 en 978-1-4244-6402-9 1550-3607 10.1109/ICC.2010.5502185 1 StefanSchürmanns EliasWeingaertner TorstenKempf GerdAscheid KlausWehrle RainerLeupers inproceedings 2010-ipsn-sasnauskas-kleenet 2010 4 12 186--196 Complex interactions and the distributed nature of wireless sensor networks make automated testing and debugging before deployment a necessity. A main challenge is to detect bugs that occur due to non-deterministic events, such as node reboots or packet duplicates. Often, these events have the potential to drive a sensor network and its applications into corner-case situations, exhibiting bugs that are hard to detect using existing testing and debugging techniques. In this paper, we present KleeNet, a debugging environment that effectively discovers such bugs before deployment. KleeNet executes unmodified sensor network applications on symbolic input and automatically injects non-deterministic failures. As a result, KleeNet generates distributed execution paths at high-coverage, including low-probability corner-case situations. As a case study, we integrated KleeNet into the Contiki OS and show its effectiveness by detecting four insidious bugs in the uIP TCP/IP protocol stack. One of these bugs is critical and lead to refusal of further connections. automated protocol testing, experimentation, failure detection, wireless sensor networks kleenet fileadmin/papers/2010/2010-04-ipsn-sasnauskas-KleeNet.pdf Print ACM

New York, NY, USA

Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010), Stockholm, Sweden en 978-1-60558-988-6 http://doi.acm.org/10.1145/1791212.1791235 1 RaimondasSasnauskas OlafLandsiedel Muhammad HamadAlizai CarstenWeise StefanKowalewski KlausWehrle inproceedings 20104-IPSN-alizai-svr 2010 4 12 366-367 We present Statistical Vector Routing (SVR), a protocol that efficiently deals with communication link dynamics in wireless networks. It assigns virtual coordinates to nodes based on the statistical distribution of their distance from a small set of beacons. The distance metric predicts the current location of a node in its address distribution. Our initial results from a prototype implementation over real testbeds demonstrate the feasibility of SVR. wld https://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-alizai-ipsn-pad.pdf http://portal.acm.org/citation.cfm?id=1791257 Print ACM

New York, NY, USA

Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010), Stockholm, Sweden Stockholm, Sweden 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010) April 12-16, 2010 en 978-1-60558-988-6 1 Muhammad HamadAlizai TobiasVaegs OlafLandsiedel RaimondasSasnauskas KlausWehrle inproceedings inproceedingsreference201001221179332027 2010 3 15 1-5 In wireless and mobile networking, volatile environ- mental conditions are a permanent challenge, resulting in a demand for cross-layer optimizations. To further increase flexibility, we believe cross-layer architectures should adapt themselves to these changing conditions, just as they adapt the network stack, devices, and applications. In this paper, we propose CRAWLER, a novel cross-layer architecture that combines three core properties: signaling between all layers and system components; extensibility and adaptability at runtime; and high usability for cross-layer developers. CRAWLER increases flexibility, as well as expediting and simplifying cross- layer development. Work in Progress session crawler fileadmin/papers/2010/2010-03-infocom-aktas-crawler.pdf Print IEEE Proceedings of the 2010 INFOCOM IEEE Conference on Computer Communications Workshops, San Diego, CA, USA en 978-1-4244-6739-6 1 IsmetAktas JensOtten FlorianSchmidt KlausWehrle inproceedings inproceedingsreference201001227195395138 2010 1 18 1 1-6 This paper presents a cross-layer approach for iterative source-channel decoding (ISCD) in wireless VoIP networks. The novelty of the proposed method is the incorporation of both, speech bits as well as protocol header bits, into the ISCD process. The header bits take the role of pilot bits having perfect reliability. These bits are distributed over the frame as strong supporting points for the MAP decoder which results in a significant enhancement of the output speech quality compared to the benchmark scheme using ISCD for speech only. For this approach, we exploit new cross-layer concepts that support the direct communication between non-adjacent layers. These concepts enable the iterative exchange of extrinsic information between the source decoder located on the application layer and the channel decoder located on the physical layer. This technique can also be applied to audio and video transmission. refector fileadmin/papers/2010/2010-01-scc-breddermann-iscd.pdf CD-ROM / DVD-ROM Rudolf Mathar, Christoph Ruland VDE Verlag

Berlin, Germany

Proceedings of International ITG Conference on Source and Channel Coding Proceedings of International ITG Conference on Source and Channel Coding ITG Siegen International ITG Conference on Source and Channel Coding 2010 January 18-21, 2010 en 978-3-8007-3211-1 1 TobiasBreddermann HelgeLueders PeterVary IsmetAktas FlorianSchmidt inproceedings Eisenblaetter10 2010 227 -236 Proc. of the 8th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt'10) AndreasEisenblätter Hans-FlorianGeerdes JamesGross OscarPuñal JonasSchweiger conference 2009-q2swinet-samad-REALISM ACM International Symposium on QoS and Security for Wireless and Mobile Networks 2009 10 26 97-102 Online ACM New York, NY, USA The 5th ACM International Symposium on QoS and Security for Wireless and Mobile Networks (Q2SWinet 2009), Tenerife, The Canary Islands, Spain Tenerife, The Canary Islands, Spain ACM International Symposium on QoS and Security for Wireless and Mobile Networks 26-30 October, 2009 en 978-1-60558-619-9 FahadSamad SadeqAli Makram conference 2009-ngmast-samad-pcwmn 2009 9 15 1 487-493 IEEE Misc IEEE NGMAST 2009 Cardiff, U.K. International Conference and Exhibition on Next Generation Mobil Applications, Services and Technologies en 978-0-7695-3786-3 FahadSamad SadeqAli Makram conference 2009-iscc-samad-NNCQ 2009 7 5 763-769 Online IEEE IEEE Symposium on Computers and Communications (ISCC 2009), Sousse, Tunisia Sousse, Tunisia IEEE Symposium on Computers and Communications en 978-1-4244-4671-1 SadeqAli Makram FahadSamad MesutGuenes conference 2009-mwns-samad-hsvc 2009 5 15 51-62 Print Shaker Verlag The 2nd International Workshop on Mobile and Wireless Networks Security in conjunction with IFIP NETWORKING 2009, Aachen, Germany. Aachen, Germany International Workshop on Mobile and Wireless Networks Security (MWNS 2009) en 978-3-8322-8177-9 FahadSamad Sadeq AliMakram article inproceedingsreference200903099502213244 Proceedings of the 11th Joint International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS/Performance 2009) 2009 37 2 49-50 Accepted as poster presentation. https://www.comsys.rwth-aachen.de/fileadmin/papers/2009/2009-weingaertner-time-accurate-sigmetrics09.pdf Print ACM SIGMETRICS

New York, NY, USA

ACM en 0163-5999 10.1145/1639562.1639580 1 EliasWeingaertner FlorianSchmidt TobiasHeer KlausWehrle conference 2008-ntms-samad-RFID 2008 11 5 1-5 Online IEEE 2nd International Conference on New Technologies, Mobility, and Security (NTMS 2008), Tangier, Morocco Tangier, Morocco International Conference on New Technologies, Mobility and Security 5-7 Nov. 2008 en 978-2-9532443-0-4 FahadSamad SadeqAli Makram inproceedings 2008-sensys-sasnauskas-kleenet 2008 11 425--426 We present KleeNet, a Klee based bug hunting tool for sensor network applications before deployment. KleeNet automatically tests code for all possible inputs, ensures memory safety, and integrates well into TinyOS based application development life cycle, making it easy for developers to test their applications. bug finding, memory safety, tinyos, type safety kleenet fileadmin/papers/2008/2008-11-Sasnauskas-SenSys08-KleeNet.pdf Print ACM

New York, NY, USA

Proceedings of the 6th ACM conference on Embedded network sensor systems (SenSys'08), Raleigh, NC, USA en 978-1-59593-990-6 http://doi.acm.org/10.1145/1460412.1460485 1 RaimondasSasnauskas Jó AgilaBitsch Link Muhammad HamadAlizai KlausWehrle techreport 2008-fgsn-sasnauskas-kleenet 2008 9 Testing sensor network applications is an essential and a difficult task. Due to their distributed and faulty nature, severe resource constraints, unobservable interactions, and limited human interaction, sensor networks, make monitoring and debugging of applications strenuous and more challenging. In this paper we present KleeNet - a Klee based platform independent bug hunting tool for sensor network applications before deployment - which can automatically test applications for all possible inputs, and hence, ensures memory safety for TinyOS based applications. Upon finding a bug, KleeNet generates a concrete test case with real input values identifying a specific error path in a program. Additionally, we show that KleeNet integrates well into TinyOS application development life cycle with minimum manual effort, making it easy for developers to test their applications. kleenet fileadmin/papers/2008/2008-09-Sasnauskas-FGSN08-BugHunting.pdf ftp://ftp.inf.fu-berlin.de/pub/reports/tr-b-08-12.pdf Print Freie Universität Berlin, Institute of Computer Science

Berlin, Germany

Proceedings of the 7th GI/ITG Fachgespraech Wireless Sensor Networks, Berlin, Germany Chair of Communication and Distributed Systems (ComSys) en 1 RaimondasSasnauskas Jó AgilaBitsch Link Muhammad HamadAlizai KlausWehrle article 200808WeingaertnerSIGMETRICSPERSyncNetWorkEmulation SIGMETRICS Performance Evaluation Review 2008 36 2 58-63 Network emulation, in which real systems interact with a network simulation, is a common evaluation method in computer networking research. Until now, the simulation in charge of representing the network has been required to be real-time capable, as otherwise a time drift between the simulation and the real network devices may occur and corrupt the results. In this paper, we present our work on synchronized network emulation. By adding a central synchronization entity and by virtualizing real systems for means of control, we can build-up network emulations which contain both unmodified x86 systems and network simulations of any complexity. This is a revised version of a paper originally presented at the ACM HotMetrics 2008 workshop. print en 0163-5999 10.1145/1453175.1453185 1 EliasWeingaertner FlorianSchmidt TobiasHeer KlausWehrle inbook 2008-thissen-LNCS-multimedia 2008 268-299 Print M. Nagl, W. Marquardt Springer Lecture Notes in Computer Science 4970 Collaborative and Distributed Chemical Engineering, From Understanding to Substantial Design Process Support en 978-3-540-70551-2 AndréSchüppen OttoSpaniol DirkThißen IngoAssenmacher EdmundHaberstroh ThorstenKuhlen inbook 2008-thissen-LNCS-management 2008 401-429 Print M. Nagl, W. Marquardt Springer Lecture Notes in Computer Science 4970 Collaborative and Distributed Chemical Engineering, From Understanding to Substantial Design Process Support en 978-3-540-70551-2 YuriBabich OttoSpaniol DirkThißen inbook 2008-thissen-LNCS-synergy 2008 519-526 Print M. Nagl, W. Marquardt Springer Lecture Notes in Computer Science 4970 Collaborative and Distributed Chemical Engineering, From Understanding to Substantial Design Process Support en 978-3-540-70551-2 SimonBecker MarkusHeller MatthiasJarke WolfgangMarquardt ManfredNagl OttoSpaniol DirkThißen conference 2007-aktas-VTC-ApplicabilityofaMulti-ModeMACProtocol-Conference 2007 4 22 969 - 973 Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th ArifOtyakmaz IsmetAktas MarcSchinnenburg RalfPabst conference 2007-aktas-WCNC2007-AMulti-ModeMACProtocolwithRelaySupport-Conference 2007 3 11 328 - 333 Future mobile radio networks will have the requirement of very high data rates. Typical wireless data communication will not only occur in short range scenarios like hotspots in airports, city centres, exhibition halls, etc., but also in wide area environments, e.g. a moving car in a rural environment. Data services will require a ubiquitous mobile radio system and demand better quality of service, like high data rates and low delays. Two promising concepts for future mobile radio communication are the deployment of relays and the ability to adapt to various deployment strategies by using different radio access technologies, i.e. modes with a common technology basis. The former concept allows enlarging the cell coverage. Relays are not wired connected and consequently a cost-efficient alternative to base stations that work in a decode-and-forward principle. The latter concept provides modes that are tailored solutions for specific environments and thus allow the adaptation to various scenarios by selecting the most adequate one. The aim of this work is to merge the advantages taken from both concepts to one solution. Wireless Communications and Networking Conference, 2007. WCNC 2007 ArifOtyakmaz IsmetAktas MarcSchinnenburg RalfPabst article 200707ITp2p Special Issue on Peer-to-Peer of the it - Information Technology Journal 2007 49 ISSN 0935-3232 http://it-Information-Technology.de RalfSteinmetz KlausWehrle NicolasLiebau inproceedings 200706juriFGSN07platform 2007

Aachen, Germany

Proceedings of 6th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks" JuriSaragazki OlafLandsiedel KlausWehrle inproceedings 200707SchmidtFGSN07composition 2007

Aachen, Germany

Proceedings of 6th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Aachen StefanSchmitz OlafLandsiedel KlausWehrle inproceedings 200605NSDIOCALA 2006 In order for overlays and new network architectures to gain real user acceptance, users should be able to leverage overlay functionality without any modifications to their applications and operating systems. We present our design, implementation, and experience with OCALA, an overlay convergence architecture that achieves this goal. OCALA interposes an overlay convergence layer below the transport layer. This layer is composed of an overlay independent sub-layer that interfaces with legacy applications, and an overlay dependent sub-layer that delivers packets to the overlay. Unlike previous efforts, OCALA enables: (a) simultaneous access to multiple overlays (b) communication between hosts in different overlays (c) communication between overlay hosts and legacy hosts (d) extensibility, allowing researchers to incorporate their overlays into OCALA. We currently support five overlays, i3 [32], RON [1], HIP [19], DOA [39] and OverDoSe [31] on Linux, Windows XP/2000 and Mac OS X. We (and a few other research groups and end-users) have used OCALA for over a year with many legacy applications ranging from web browsers to remote desktop applications. San Jose, California USENIX / ACM Proceedings of 3rd ACM Sigcomm/ACM Sigops Symposium on Networked Systems Design and Implementation (NSDI 2006) ACM Dilip AJoseph KarthikLakshminarayanan IonStoica KlausWehrle techreport 200605OCALATechReportUCB 2005 UCB/CSD-005/1397 The ever increasing demand of new applications coupled with the increasing rigidity of the Internet has led researchers to propose overlay networks as a means of introducing new functionality in the Internet. However, despite sustained efforts, few overlays are used widely. Providing support for legacy Internet applications to access such overlays would significantly expand the user base of the overlays, as the users can instantly benefit from the overlay functionality. We present the design and implementation of OCALA, an Overlay Convergence Architecture for Legacy Applications. Unlike previous efforts, OCALA allows users to access different overlays simultaneously, as well as hosts in different overlays to communicate with each other. In addition, OCALA reduces the implementation burden on the overlay developers, by factoring out the functions commonly required to support legacy applications, such as tapping legacy traffic, authentication and encryption. Our implementation of OCALA as a proxy requires no changes to the applications or operating systems. We currently support two overlays, i3 and RON, on Linux and Windows XP/2000 platforms. We (and a few other research groups and end-users) have used the proxy over a eleven-month period with many legacy applications ranging from web browsers to remote desktop applications. http://ocala.cs.berkeley.edu

UCB, Berkeley, USA

University of California at Berkeley DilipJoseph JayanthkumarKannan AyumuKubota IonStoica KlausWehrle article 2004steinmetzwehrleP2PNetworking Informatik-Spektrum 2004 27 1 51-54 RalfSteinmetz KlausWehrle inproceedings 200410acmmultimediai3composition 2004 http://i3.cs.berkeley.edu

New York, USA

Proceedings of ACM Multimedia 2004 ACM KarthikLakshminarayanan IonStoica KlausWehrle techreport 200606i3proxytechreport 2004 UCB/CSD-04-1342 Providing support for legacy applications is a crucial component of many overlay networks, as it allows end-users to instantly benefit from the functionality introduced by these overlays. This paper presents the design and implementation of a proxy-based solution to support legacy applications in the context of the i3 overlay [24]. The proxy design relies on an address virtualization technique which allows the proxy to tunnel the legacy traffic over the overlay transparently. Our solution can preserve IP packet headers on an end-to-end basis, even when end-host IP addresses change, or when endhosts live in different address spaces (e.g., behind NATs). In addition, our solution allows the use of human-readable names to refer to hosts or services, and requires no changes to applications or operating systems. To illustrate how the proxy enables legacy applications to take advantage of the overlay (i.e., i3) functionality, we present four examples: enabling access to machines behind NAT boxes, secure Intranet access, routing legacy traffic through Bro, an intrusion detection system, and anonymous web download. We have implemented the proxy on Linux andWindows XP/2000 platforms, and used it over the i3 service on PlanetLab over a three month period with a variety of legacy applications ranging from web browsers to operating system-specific file sharing. http://i3.cs.berkeley.edu

UCB, Berkeley, USA

University of California at Berkeley Technical Report JayanthkumarKannan AyumuKubota KarthikLakshminarayanan IonStoica KlausWehrle inbook 1999-thissen-springer-management 1999 371-386 Print M. Nagl, B. Westfechtel Springer Integration von Entwicklungssystemen in Ingenieuranwendungen, Substantielle Verbesserung der Entwicklungsprozesse de 3-540-63920-9 OttoSpaniol DirkThißen BerndMeyer ClaudiaLinnhoff-Popien article 1997-thissen-IM-corba Industrie Management 1997 6 Print de OttoSpaniol BerndMeyer DirkThißen