This file was created by the TYPO3 extension bib --- Timezone: CEST Creation date: 2023-05-28 Creation time: 11-06-19 --- Number of references 147 incollection 2023_pennekamp_crd-a.i 2023 2 8 The Internet of Production (IoP) leverages concepts such as digital shadows, data lakes, and a World Wide Lab (WWL) to advance today’s production. Consequently, it requires a technical infrastructure that can support the agile deployment of these concepts and corresponding high-level applications, which, e.g., demand the processing of massive data in motion and at rest. As such, key research aspects are the support for low-latency control loops, concepts on scalable data stream processing, deployable information security, and semantically rich and efficient long-term storage. In particular, such an infrastructure cannot continue to be limited to machines and sensors, but additionally needs to encompass networked environments: production cells, edge computing, and location-independent cloud infrastructures. Finally, in light of the envisioned WWL, i.e., the interconnection of production sites, the technical infrastructure must be advanced to support secure and privacy-preserving industrial collaboration. To evolve today’s production sites and lay the infrastructural foundation for the IoP, we identify five broad streams of research: (1) adapting data and stream processing to heterogeneous data from distributed sources, (2) ensuring data interoperability between systems and production sites, (3) exchanging and sharing data with different stakeholders, (4) network security approaches addressing the risks of increasing interconnectivity, and (5) security architectures to enable secure and privacy-preserving industrial collaboration. With our research, we evolve the underlying infrastructure from isolated, sparsely networked production sites toward an architecture that supports high-level applications and sophisticated digital shadows while facilitating the transition toward a WWL. Cyber-physical production systems; Data streams; Industrial data processing; Industrial network security; Industrial data security; Secure industrial collaboration internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-pennekamp-iop-a.i.pdf Springer Internet of Production: Fundamentals, Applications and Proceedings 978-3-030-98062-7 10.1007/978-3-030-98062-7_2-1 1 JanPennekamp AnastasiiaBelova ThomasBergs MatthiasBodenbenner AndreasBührig-Polaczek MarkusDahlmanns IkeKunze MoritzKröger SandraGeisler MartinHenze DanielLütticke BenjaminMontavon PhilippNiemietz LuciaOrtjohann MaximilianRudack Robert H.Schmitt UweVroomen KlausWehrle MichaelZeng incollection 2023_klugewilkes_crd-b2.iv 2023 2 8 The increasing product variability and lack of skilled workers demand for autonomous, flexible production. Since assembly is considered a main cost driver and accounts for a major part of production time, research focuses on new technologies in assembly. The paradigm of Line-less Mobile Assembly Systems (LMAS) provides a solution for the future of assembly by mobilizing all resources. Thus, dynamic product routes through spatiotemporally configured assembly stations on a shop floor free of fixed obstacles are enabled. In this chapter, we present research focal points on different levels of LMAS, starting with the macroscopic level of formation planning, followed by the mesoscopic level of mobile robot control and multipurpose input devices and the microscopic level of services, such as interpreting autonomous decisions and in-network computing. We provide cross-level data and knowledge transfer through a novel ontology-based knowledge management. Overall, our work contributes to future safe and predictable human-robot collaboration in dynamic LMAS stations based on accurate online formation and motion planning of mobile robots, novel human-machine interfaces and networking technologies, as well as trustworthy AI-based decisions. Lineless mobile assembly systems (LMAS); Formation planning; Online motion planning; In-network computing; Interpretable AI; Human-machine collaboration; Ontology-based knowledge management internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-klugewilkes-iop-b2.iv.pdf Springer Internet of Production: Fundamentals, Applications and Proceedings 978-3-030-98062-7 10.1007/978-3-030-98062-7_13-1 1 AlineKluge-Wilkes RalphBaier DanielGossen IkeKunze AleksandraMüller AmirShahidi DominikWolfschläger ChristianBrecher BurkhardCorves MathiasHüsing VerenaNitsch Robert H.Schmitt KlausWehrle article 2023_pennekamp_purchase_inquiries ACM Transactions on Internet Technology 2023 Dynamic and flexible business relationships are expected to become more important in the future to accommodate specialized change requests or small-batch production. Today, buyers and sellers must disclose sensitive information on products upfront before the actual manufacturing. However, without a trust relation, this situation is precarious for the involved companies as they fear for their competitiveness. Related work overlooks this issue so far: Existing approaches only protect the information of a single party only, hindering dynamic and on-demand business relationships. To account for the corresponding research gap of inadequately privacy-protected information and to deal with companies without an established trust relation, we pursue the direction of innovative privacy-preserving purchase inquiries that seamlessly integrate into today's established supplier management and procurement processes. Utilizing well-established building blocks from private computing, such as private set intersection and homomorphic encryption, we propose two designs with slightly different privacy and performance implications to securely realize purchase inquiries over the Internet. In particular, we allow buyers to consider more potential sellers without sharing sensitive information and relieve sellers of the burden of repeatedly preparing elaborate yet discarded offers. We demonstrate our approaches' scalability using two real-world use cases from the domain of production technology. Overall, we present deployable designs that offer two-way privacy for purchase inquiries and, in turn, fill a gap that currently hinders establishing dynamic and flexible business relationships. In the future, we expect significantly increasing research activity in this overlooked area to address the needs of an evolving production landscape. bootstrapping procurement; secure industrial collaboration; private set intersection; homomorphic encryption; Internet of Production internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-pennekamp-purchase-inquiries.pdf ACM accepted 1533-5399 10.1145/3599968 1 JanPennekamp MarkusDahlmanns FrederikFuhrmann TimoHeutmann AlexanderKreppein DennisGrunert ChristophLange Robert H.Schmitt KlausWehrle 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 techreport draft-irtf-coinrg-use-cases-02 2022 3 draft-irtf-coinrg-use-cases-02 expires: 8 September 2022 (work in progress) https://www.comsys.rwth-aachen.de/fileadmin/papers/2022/draft-irtf-coinrg-use-cases-02.pdf https://datatracker.ietf.org/doc/draft-irtf-coinrg-use-cases/ Online IETF Trust Internet Drafts Internet Engineering Task Force Internet Engineering Task Force IkeKunze KlausWehrle DirkTrossen Marie-JoséMontpetit Xavierde Foy DavidGriffin MiguelRio 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-kunze-signal-detection 2021 6 10 internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-kunze-signal-detection.pdf IEEE Proceedings of the 2021 IEEE 30th International Symposium on Industrial Electronics (ISIE) 978-1-7281-9023-5 2163-5145 10.1109/ISIE45552.2021.9576221 1 IkeKunze PhilippNiemietz LiamTirpitz RenéGlebke DanielTrauth ThomasBergs 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_mangel_reshare 2021 6 8 12731 265-283 As decision-making is increasingly data-driven, trustworthiness and reliability of the underlying data, e.g., maintained in knowledge graphs or on the Web, are essential requirements for their usability in the industry. However, neither traditional solutions, such as paper-based data curation processes, nor state-of-the-art approaches, such as distributed ledger technologies, adequately scale to the complex requirements and high throughput of continuously evolving industrial data. Motivated by a practical use case with high demands towards data trustworthiness and reliability, we identify the need for digitally-verifiable data immutability as a still insufficiently addressed dimension of data quality. Based on our discussion of shortcomings in related work, we thus propose ReShare, our novel concept of digital transmission contracts with bilateral signatures, to address this open issue for both RDF knowledge graphs and arbitrary data on the Web. Our quantitative evaluation of ReShare’s performance and scalability reveals only moderate computation and communication overhead, indicating significant potential for cost-reductions compared to today’s approaches. By cleverly integrating digital transmission contracts with existing Web-based information systems, ReShare provides a promising foundation for data sharing and reuse in Industry 4.0 and beyond, enabling digital accountability through easily-adoptable digitally-verifiable data immutability and non-repudiation. Lecture Notes in Computer Science (LNCS), Volume 12731 Digital transmission contracts; Trust; Data immutability; Non-repudiation; Accountability; Data dynamics; Linked Data; Knowledge graphs internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2021/2021-mangel-eswc-reshare.pdf Springer Proceedings of the 18th Extended Semantic Web Conference (ESWC '21), June 6-10, 2021, Heraklion, Greece Heraklion, Greece June 6-10, 2021 978-3-030-77384-7 0302-9743 10.1007/978-3-030-77385-4_16 1 SimonMangel LarsGleim JanPennekamp KlausWehrle StefanDecker inproceedings 2021_gleim_factstack 2021 5 31 371-395 Data exchange throughout the supply chain is essential for the agile and adaptive manufacturing processes of Industry 4.0. As companies employ numerous, frequently mutually incompatible data management and preservation approaches, interorganizational data sharing and reuse regularly requires human interaction and is thus associated with high overhead costs. An interoperable system, supporting the unified management, preservation and exchange of data across organizational boundaries is missing to date. We propose FactStack, a unified approach to data management and preservation based upon a novel combination of existing Web-standards and tightly integrated with the HTTP protocol itself. Based on the FactDAG model, FactStack guides and supports the full data lifecycle in a FAIR and interoperable manner, independent of individual software solutions and backward-compatible with existing resource oriented architectures. We describe our reference implementation of the approach and evaluate its performance, showcasing scalability even to high-throughput applications. We analyze the system's applicability to industry using a representative real-world use case in aircraft manufacturing based on principal requirements identified in prior work. We conclude that FactStack fulfills all requirements and provides a promising solution for the on-demand integration of persistence and provenance into existing resource-oriented architectures, facilitating data management and preservation for the agile and interorganizational manufacturing processes of Industry 4.0. Through its open source distribution, it is readily available for adoption by the community, paving the way for improved utility and usability of data management and preservation in digital manufacturing and supply chains. Lecture Notes in Informatics (LNI), Volume P-312 Web Technologies; Data Management; Memento; Persistence; PID; Industry 4.0 internet-of-production https://comsys.rwth-aachen.de/fileadmin/papers/2021/2021-gleim-btw-iop-interoperability-realization.pdf Gesellschaft für Informatik Proceedings of the 19th Symposium for Database Systems for Business, Technology and Web (BTW '21), September 13-17, 2021, Dresden, Germany Dresden, Germany September 13-17, 2021 978-3-88579-705-0 1617-5468 10.18420/btw2021-20 1 LarsGleim JanPennekamp LiamTirpitz SaschaWelten FlorianBrillowski StefanDecker 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 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 2020_gleim_factdag_provenance 2020 11 1 2821 53-58 To foster data sharing and reuse across organizational boundaries, provenance tracking is of vital importance for the establishment of trust and accountability, especially in industrial applications, but often neglected due to associated overhead. The abstract FactDAG data interoperability model strives to address this challenge by simplifying the creation of provenance-linked knowledge graphs of revisioned (and thus immutable) resources. However, to date, it lacks a practical provenance implementation. In this work, we present a concrete alignment of all roles and relations in the FactDAG model to the W3C PROV provenance standard, allowing future software implementations to directly produce standard-compliant provenance information. Maintaining compatibility with existing PROV tooling, an implementation of this mapping will pave the way for practical FactDAG implementations and deployments, improving trust and accountability for Open Data through simplified provenance management. Provenance; Data Lineage; Open Data; Semantic Web Technologies; Ontology Alignment; PROV; RDF; Industry 4.0; Internet of Production; IIoT internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2020/2020-gleim-factdag-provenance.pdf CEUR Workshop Proceedings Proceedings of the 6th Workshop on Managing the Evolution and Preservation of the Data Web (MEPDaW '20), co-located with the 19th International Semantic Web Conference (ISWC '20), November 1-6, 2020, Athens, Greece, Athens, Greece November 1-6, 2020 1613-0073 1 LarsGleim LiamTirpitz JanPennekamp StefanDecker 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-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 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_securityConsiderations 2019 12 4 The productivity and sustainability advances for (smart) manufacturing resulting from (globally) interconnected Industrial IoT devices in a lab of labs are expected to be significant. While such visions introduce opportunities for the involved parties, the associated risks must be considered as well. In particular, security aspects are crucial challenges and remain unsolved. So far, single stakeholders only had to consider their local view on security. However, for a global lab, we identify several fundamental research challenges in (dynamic) scenarios with multiple stakeholders: While information security mandates that models must be adapted wrt. confidentiality to address these new influences on business secrets, from a network perspective, the drastically increasing amount of possible attack vectors challenges today's approaches. Finally, concepts addressing these security challenges should provide backwards compatibility to enable a smooth transition from today's isolated landscape towards globally interconnected IIoT environments. secure industrial collaboration; interconnected cyber-physical systems; stakeholders; Internet of Production internet-of-production; iotrust https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-pennekamp-security-considerations.pdf IEEE Proceedings of the 3rd IEEE Global Conference on Internet of Things (GCIoT '19), December 4–7, 2019, Dubai, United Arab Emirates Dubai, United Arab Emirates December 4–7, 2019 978-1-7281-4873-1 10.1109/GCIoT47977.2019.9058413 1 JanPennekamp MarkusDahlmanns LarsGleim StefanDecker KlausWehrle inproceedings 2019_pennekamp_infrastructure 2019 5 8 31-37 New levels of cross-domain collaboration between manufacturing companies throughout the supply chain are anticipated to bring benefits to both suppliers and consumers of products. Enabling a fine-grained sharing and analysis of data among different stakeholders in an automated manner, such a vision of an Internet of Production (IoP) introduces demanding challenges to the communication, storage, and computation infrastructure in production environments. In this work, we present three example cases that would benefit from an IoP (a fine blanking line, a high pressure die casting process, and a connected job shop) and derive requirements that cannot be met by today’s infrastructure. In particular, we identify three orthogonal research objectives: (i) real-time control of tightly integrated production processes to offer seamless low-latency analysis and execution, (ii) storing and processing heterogeneous production data to support scalable data stream processing and storage, and (iii) secure privacy-aware collaboration in production to provide a basis for secure industrial collaboration. Based on a discussion of state-of-the-art approaches for these three objectives, we create a blueprint for an infrastructure acting as an enabler for an IoP. Internet of Production; Cyber-Physical Systems; Data Processing; Low Latency; Secure Industrial Collaboration internet-of-production https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-pennekamp-iop-infrastructure.pdf IEEE Proceedings of the 2nd IEEE International Conference on Industrial Cyber-Physical Systems (ICPS '19), May 6-9, 2019, Taipei, TW Taipei, TW May 6-9, 2019 978-1-5386-8500-6/19 10.1109/ICPHYS.2019.8780276 1 JanPennekamp RenéGlebke MartinHenze TobiasMeisen ChristophQuix RihanHai LarsGleim PhilippNiemietz MaximilianRudack SimonKnape AlexanderEpple DanielTrauth UweVroomen ThomasBergs ChristianBrecher AndreasBührig-Polaczek MatthiasJarke KlausWehrle article 2019_henze_flexible_netzwerkstrukturen_iop ITG-news 2019 4 02/2019 7-8 internet-of-production,reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-henze-itg-iop-networkarchitectures.pdf Informationstechnische Gesellschaft im VDE

Frankfurt am Main

MartinHenze RenéGlebke 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 inproceedings 2019-glebke-hicss-integrated 2019 1 8 7252-7261 internet-of-production,reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2019/2019-glebke-integrated.pdf Online University of Hawai'i at Manoa / AIS Proceedings of the 52nd Hawaii International Conference on System Sciences (HICSS), Wailea, HI, USA en 978-0-9981331-2-6 10.24251/HICSS.2019.871 1 RenéGlebke MartinHenze KlausWehrle PhilippNiemietz DanielTrauth PatrickMattfeld ThomasBergs 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 inproceedings 2018-rueth-reflexnetcompute 2018 8 20 reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-rueth-reflexnetcompute.pdf ACM Proceedings of the ACM SIGCOMM 2018 1st Workshop on In-Network Computing (NetCompute '18) Budapest, Hungary ACM SIGCOMM 2018 1st Workshop on In-Network Computing (NetCompute 2018) 20.08.2018 10.1145/3229591.3229592 1 JanRüth RenéGlebke KlausWehrle VedadCausevic SandraHirche 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-rueth-reflexdemo 2018 4 15 reflexes https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-rueth-reflexdemo.pdf IEEE Computer Society In Proceedings of IEEE INFOCOM 2018 - IEEE Conference on Computer Communications Honolulu, HI, USA International Conference on Computer Communications (INFOCOM) 15.04.2018 - 19.04.2018 en 10.1109/INFCOMW.2018.8406844 1 JanRüth RenéGlebke TanjaUlmen 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 article 2016-fgcs-ziegeldorf-bitcoin Future Generation Computer Systems 2018 3 80 448-466 Pseudonymity, anonymity, and untraceability https://www.comsys.rwth-aachen.de/fileadmin/papers/2018/2018-ziegeldorf-fgcs-bitcoin.pdf Online Elsevier en 0167-739X 10.1016/j.future.2016.05.018 1 Jan HenrikZiegeldorf RomanMatzutt MartinHenze FredGrossmann 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 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 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 DombrowskiSRDS16 2016 9 27 307--316 fault tolerance;formal verification;protocols;wireless channels;EchoRing protocol;fault-tolerant methods;formal model-based verification;model-checking assisted protocol;probabilistic model checking;reliability constraints;safety-critical industrial applications;salient features;token loss;token-based system;ultrareliable low-latency wireless networks;unprecedented latency;wireless networking community;wireless protocols;wireless token-passing systems;Automata;Model checking;Payloads;Probabilistic logic;Protocols;Reliability;Wireless communication;Model checking;Probabilistic timed automata;Token passing;Wireless Industrial Networks;tool-assisted protocol design;validation cps,hodrian http://ieeexplore.ieee.org/document/7794360/ Proc. of IEEE 35th Symposium on Reliable Distributed Systems IEEE Budapest, Hungary IEEE 35th Symposium on Reliable Distributed Systems (SRDS) 10.1109/SRDS.2016.048 1 ChristianDombrowski SebastianJunges Joost-PieterKatoen JamesGross conference 2016-hohlfeld-qcman 2016 9 Assessing the impact of network delay on perceived quality of gaming has been subject to many studies involving different genres ranging from fast-paced first-person shooters to strategy games. This paper assesses the impact of network latency on the Quality of Experience (QoE) of casual gamers playing Minecraft. It is based on a user study involving 12 casual gamers with no prior experience with Minecraft. QoE is assessed using the Game Experience Questionnaire (GEQ) and dedicated questions for the overall perceived quality and experienced gameplay interruptions. The main finding is that casual Minecraft players are rather insensitive to network delay of up to 1 sec. https://i-teletraffic.org/_Resources/Persistent/bc99ba4324ebc7cf1369f09a6caa334c0203943f/Hohlfeld2016.pdf http://ieeexplore.ieee.org/abstract/document/7810715/?reload=true IEEE QCMan IEEE QCMan 10.1109/ITC-28.2016.313 OliverHohlfeld HannesFiedler EnricPujol DennisGuse 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 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 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 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-gerdes-authorization 2015 9 iotsec Online D•A•CH Security 2015 Sankt Augustin, Germany D•A•CH Security 2015 08.09. - 09.09.2015 accepted de 1 StefanieGerdes RenéHummen OlafBergmann 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-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 Dombrowski2015EW 2015 5 20 Spurred by recent industrial trends, such as factory automation or phase synchronization in the smart grid, there is a significant interest for wireless industrial networks lately. In contrast to traditional applications, the focus is on carrying out communication at very short latencies together with high reliabilities. Meeting such extreme requirements with wireless networks is challenging. A potential candidate for such a network is a token-passing protocol, as it allows to bound latencies. However, it lacks mechanisms to cope with the dynamics of wireless channels. In this paper, we present EchoRing, a novel wireless token-passing protocol. Cooperative communication and an improved fault tolerance allow this decentralized protocol to support industrial applications over wireless networks. Based on experimental results, we demonstrate the suitability of EchoRing to support demands of industrial applications. EchoRing outperforms other schemes by several orders of magnitude in terms of reliability for latencies of and below 10ms. Protocols and architectures for wireless networks; Testbeds and experimental wireless systems; Reliability: robust and dependable wireless systems cps,hodrian IEEE Proc. of 21st European Wireless Conference (EW15) Budapest, Hungary European Wireless Conference (EW) 20/05/2015 978-3-8007-3976-9 ChristianDombrowski JamesGross 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 inproceedings Dombrowski2015NetSys 2015 3 9 1--3 cps,hodrian http://www.netsys2015.com/wp-content/uploads/NetSys2015_Demo_Dombrowski.pdf http://www.netsys2015.com/program/demonstrations/ http://www.netsys2015.com/communication-software-awards/ 2nd Place Regular Demonstrations IEEE Proc. of 2nd International Conference on Networked Systems, Demonstrations (NetSys15) Cottbus, Germany Conference on Networked Systems (NetSys) - Demo Session 09/03/2015 1 ChristianDombrowski JamesGross inproceedings 2014-ziegeldorf-codaspy-coinparty 2015 3 2 https://www.comsys.rwth-aachen.de/fileadmin/papers/2015/2015-ziegeldorf-codaspy-coinparty.pdf Online ACM The Fifth ACM Conference on Data and Application Security and Privacy (CODASPY 2015), San Antonio, TX, USA San Antonio, TX, USA The Fifth ACM Conference on Data and Application Security and Privacy (CODASPY 2015) en 978-1-4503-3191-3 10.1145/2699026.2699100 1 Jan HenrikZiegeldorf FredGrossmann MartinHenze NicolasInden 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 conference parruca_2014ICIC 2014 9 21 To minimize interference in LTE networks, several inter-cell interference coordination (ICIC) techniques have been in- troduced. Among them, semi-static ICIC offers a balanced trade-off between applicability and system performance. The power allocation per resource block and cell is adapted in the range of seconds according to the load in the system. An open issue in the literature is the question how fast the adaptation should be performed. This leads basically to a trade-off between system performance and feasible compu- tation times of the associated power allocation problems. In this work, we close this open issue by studying the impact that different durations of update times of semi-static ICIC have on the system performance. We conduct our study on realistic scenarios considering also the mobility of mobile terminals. Secondly, we also consider the implementation aspects of a semi-static ICIC. We introduce a very efficient implementation on general purpose graphic processing units, harnessing the parallel computing capability of such devices. We show that the update periods have a significant impact on the performance of cell edge terminals. Additionally, we present a graphic processing unit (GPU) based implementation which speeds up existing implementations up to a factor of 92x. OFDMA; LTE; ICIC; Inter-Cell Interference Coordination; GPU; GA; Genetic Algorithm; 4G; Cellular Networks; In- terference; Proportional Fair Scheduling ACM ACM Proceedings of the 17th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWIM-14) Montreal, QC, Canada International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWIM-14) September 21-26 2014 http://dx.doi.org/10.1145/2641798.2641818 1 DonaldParruca FahadAizaz SoamsiriChantaraskul JamesGross 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-wowmom-wirtz-sofi 2014 6 18 fileadmin/papers/2014/2014-wirtz-wowmom-sofi.pdf online IEEE 15th IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks (WoWMoM'14), Sydney, Australia Sydney, Australia WoWMoM June, 2014 en 10.1109/WoWMoM.2014.6918968 1 HannoWirtz MatteoCeriotti BenjaminGrap 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 article parruca2014icc Proceedings of IEEE International Conference on Communications (ICC 2014) 2014 6 11 fileadmin/papers/2014/2014_parruca_gross.pdf Online en 1 DonaldParruca JamesGross 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 inproceedings 2013-cloudcom-henze-cloud-data-handling 2013 12 2 266-269 ipacs fileadmin/papers/2013/2013-cloudcom-henze-cloud-data-handling.pdf Online IEEE Proceedings of the 2013 IEEE International Conference on Cloud Computing Technology and Science (CloudCom), Bristol, UK Bristol, UK 2013 IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2013) en 978-0-7695-5095-4 10.1109/CloudCom.2013.145 1 MartinHenze MarcelGroßfengels MaikKoprowski 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 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 conference VTC2013_parruca_gross 2013 9 Various system tasks like interference coordination, handover decisions, admission control etc. in upcoming cellular networks require precise mid-term (spanning over a few seconds) performance models. Due to channel-dependent scheduling at the base station, these performance models are not simple to obtain. Furthermore, upcoming cellular systems will be interference-limited, hence, the way interference is modeled is crucial for the accuracy. In this paper we present an analytical model for the SINR distribution of the scheduled subcarriers of an OFDMA system with proportional fair scheduling. The model takes the precise SINR distribution into account. We furthermore refine our model with respect to uniform modulation and coding, as applied in LTE networks. The derived models are validated by means of simulations. In additon, we show that our models are approximate estimators for the performance of rate-based proportional fair scheduling, while they outperform some simpler prediction models from related work significantly. https://www.comsys.rwth-aachen.de/fileadmin/papers/2013/2013_VTC_parruca.pdf Proceedings of IEE Vehicular Telecommunications Conference (VTC-Fall 2013) Las Vegas, USA 2013 IEEE 78th Vehicular Technology Conference 2-5, September, 2013 DonaldParruca MariusGrysla SimonGörtzen JamesGross techreport draft-hummen-dtls-extended-session-resumption-00 2013 7 15 draft-hummen-dtls-extended-session-resumption-00 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-00 Online Internet Engineering Task Force Internet-Draft en RenéHummen JohannesGilger article 2013-scn-ziegeldorf-iot-privacy Security and Communication Networks - Special Issue on 'Security in a Completely Interconnected World' 2013 6 10 http://www.comsys.rwth-aachen.de/fileadmin/papers/2013/2013-ziegeldorf-scn-privacy-in-the-iot.pdf Online Wiley en 10.1002/sec.795 1 Jan HenrikZiegeldorf OscarGarcia-Morchon KlausWehrle conference 2013-wowmom-punal-RFRA 2013 6 4 IEEE Proceedings of the 14th IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks (WoWMoM'13) Madrid, Spain WoWMoM June, 2013 accepted OscarPuñal HanzhiZhang JamesGross 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-EW-Weyres-Interference 19th European Wireless Conference 2013 4 1--7 http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6582799 VDE-Verlag 19th European Wireless Conference (EW 2013) 978-3-8007-3498-6 http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6582799 1 MarcoWeyres JamesGross inproceedings 2013-wisec-garcia-securing 2013 4 119--124 ACM Proceedings of the 6th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '13) (short paper) 978-1-4503-1998-0 10.1145/2462096.2462117 1 OscarGarcia-Morchon Sye LoongKeoh Sandeep S.Kumar PedroMoreno-Sanchez FranciscoVidal-Meca Jan HenrikZiegeldorf inproceedings 2013-pitsac-vidalmeca-hip 2013 3 25 1331 - 1336 The IP-based Internet of Things refers to the pervasive interactions of smart objects and people enabling new applications by means of IP protocols. An application scenario is a Smart City in which the city infrastructure, cars, and people exchange information to enable new services. IP protocols, such as IPv6, TCP and HTTP will be further complemented by IPv6 over Low powerWireless Personal Area Networks and Constrained Application Protocol currently in development in IETF. Security and privacy are a must for the IP-based IoTs in order to ensure its acceptance. However, mobility, limited bandwidth, and resource-constrained devices pose new challenges and require for a sound and efficient security architecture. In particular, dynamic association of mobile smart objects and the management of keys in large-scale networks remain an open challenge. In this context, we propose a flexible security architecture based on the Host Identity Protocol and Multimedia Internet KEYing protocols allowing for secure network association and key management. HIP - based on asymmetric-key cryptography - ensures unambiguous thing identification, mobility support, as well as a lightweight and secure method for network association. In our solution, HIP is extended with MIKEY capabilities to provide enhanced key management using polynomials, which allow to generate pairwise keys with any node based on its identity. This combination of protocols and crypto-algorithms ensures both strong security and very good performance as shown by our implementation and presents clear advantages compared with other alternatives. Internet of Things; Security; Network Access; Key Management Online IEEE Proceedings of the 27th International Conference on Advanced Information Networking and Applications Workshops (WAINA), 2013 Barcelona, Spain 25.-28.03.2013 en 10.1109/WAINA.2013.158 1 FranciscoVidal Meca Jan HenrikZiegeldorf OscarGarcia-Morchon Sandeep S.Kumar Sye LoongKeoh PedroMoreno-Sanchez 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 proceedings parruca_gross_2013 2013 1 25 1184,1190 Upcoming LTE networks have basically two different modes for scheduling data in the down-link by the base station. Dynamic scheduling brings the advantage of exploiting instantaneous channel state information while it puts on the other hand a significant burden on the system in terms of overhead and computation requirements. Especially for small packets that show up periodically, the overhead is typically too high. Therefore, the base station can serve such packet flows by the semi-persistent scheduling mode. In this mode, a certain resource allocation is fixed to a periodic schedule. While this does not allow any longer to exploit instantaneous channel states, it requires much less overhead. In this paper, we address the problem of selecting a modulation and coding scheme for such semi-persistent scheduling grants. The problem lies here in the stochastic characterization of the resource blocks over the next few seconds while on the other hand estimating based on such a characterization the blok error rate (and hence the average goodput). We provide a novel scheme, which outperforms all previously presented schemes significantly. The underlying model that we provide can also be used for any other long-term decision in an LTE system with semi-persistent scheduling such as interference coordination, handover decision etc. Long Term Evolution;decision making;dynamic scheduling;error statistics;modulation;radio links;resource allocation;stochastic processes;wireless channels;LTE networks;base station;blok error rate;data scheduling;down-link;dynamic scheduling;instantaneous channel state information;long-term decision;modulation selection;packet flows;periodic scheduling;rate selection analysis;resource allocation;resource blocks;semi-persistent scheduling mode;stochastic characterization www.performance.rwth-aachen.de/publications/conferences/2013ICNC_parruca.pdf http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6504261 San Diego, USA International Conference on Computing, Networking and Communications (ICNC) 2013 28-31 January 2013 English 978-1-4673-5287-1 10.1109/ICCNC.2013.6504261 DonaldParruca JamesGross inbook 2013-book-weingaertner-benchmarking-p2p 2013 7847 69-79 http://link.springer.com/chapter/10.1007/978-3-642-38673-2_5 2016-11-11 Print Effelsberg, Wolfgang and Steinmetz, Ralf and Strufe, Thorsten Springer Lecture Notes in Computer Science Content Delivery Overlays EN 978-3-642-38672-5 10.1007/978-3-642-38673-2_5 EliasWeingaertner RenéGlebke AlexanderHocks conference EW2013_parruca_gross 2013 8 In this paper we consider the design of semi-static inter-cell interference coordination schemes for LTE networks. In this approach, base stations coordinate the power settings per resource block over long time spans such as seconds. In order to optimize the power settings, one needs to employ models which predict the rate of terminals over the next coordination period under the usage of a given power setting. However, these models are typically quite simple and neglect the impact from fading as well as from dynamic resource allocation performed at the base stations on a millisecond basis. Ignoring such properties of OFDMA networks leads therefore to suboptimal transmit power settings. In this paper, we study the impact from a precise rate prediction model that accurately accounts for fading and dynamic resource allocation. On the down-side, this more precise model leads to a much more involved optimization problem to be solved once per coordination period. We propose two different heuristic methods to deal with this problem. Especially the usage of genetic algorithm results to be promising to counteract the complexity increase. We then study the overall system performance and find precise rate prediction models to be essential for semi-static interference coordination as they provide significant performance improvements in comparison to approaches with simpler models. ICIC, proportional fair scheduling, power mask, resource block, scheduling, dynamic scheduling, inter cell interference coordination, LTE, OFDMA, WiMAX https://www.comsys.rwth-aachen.de/fileadmin/papers/2013/2013_ICIC_parruca_grysla_gross.pdf http://www.vde-verlag.de/proceedings-en/563498043.html vde-verlag vde-verlag

http://www.vde-verlag.de/

Proceedings: European Wireless 2013 Guildford, UK 2013 - 19th European Wireless Conference 04/16/2012 - 04/18/2013 English DonaldParruca MariusGrysla PetriMähönen MarinaPetrova HanZhou FarshadNaghibi JamesGross inproceedings 2013_Jakobs_SIIT1 2013 fileadmin/papers/2013/2013_Jakobs_SIIT1.pdf Proc. 8th Int. Conf. on Standardisation & Innovation in Information Technology 1 KaiJakobs MartinaGerst 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 inproceedings 2012-Q2SWinet-Gross-Noise 2012 10 17--26 ACM Proc. of the ACM Symposium on QoS and Security for Wireless and Mobile Networks (Q2SWinet 2012) en 978-1-4503-1619-4 10.1145/2387218.2387222 1 JamesGross MarcoWeyres AdamWolisz 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-mobicom-wirtz-sofi 2012 8 451-454 Online ACM

New York, NY, USA

Proceedings of the 18th ACM Annual International Conference on Mobile Computing and Networking (MobiCom'12), Istanbul, Turkey Istanbul, Turkey 18th ACM Annual International Conference on Mobile Computing and Networking 22-26 August 2012 en 978-1-4503-1159-5 10.1145/2348543.2348608 1 HannoWirtz DavidMartin BenjaminGrap KlausWehrle 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 inproceedings 2012-AIS-Gerst-vehicles 2012 6 8 Proc. of the Annual Conference of the Academy of Innovation and Entrepreneurship (AIS). MartinaGerst KaiJakobs GaoXudong inproceedings 2012-EURAS-Gerst-Mobility 2012 6 fileadmin/papers/2012/2012-EURAS-Gerst-Mobility.pdf Print Marta Orviska; Kai Jakobs Mainz 17th EURAS Aannual Conference, 2012, Kosice, Slowakia EN 978-3-86130-337-4 1 MartinaGerst KaiJakobs conference 2012-wns3-weingaertner-glebke-vodsim 2012 3 26 373-344 Over the past decade BitTorrent has established itself as the virtual standard for P2P file sharing in the Internet. However, it is currently not possible to investigate BitTorrent with ns-3 due to the unavailability of an according application model. In this paper we eliminate this burden. We present a highly modular BitTorrent model which allows for the easy simulation of different BitTorrent systems such as file sharing as well as present and future BitTorrent-based Video-on-Demand systems. Best Paper Award, Best Student Paper Award http://dl.acm.org/citation.cfm?id=2263019.2263073 ICST

Brussels, Belgium

Proceedings of the 2012 workshop on ns-3 (WNS3 2012), 26 March 2012, Desenzano del Garda, Italy Desenzano del Garda, Italy Proceedings of the 2012 workshop on ns-3 (WNS3 2012) 978-1-4503-1510-4 1 EliasWeingaertner RenéGlebke MartinLang 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 poster 2012-kunz-omnetpp-sequencechart 2012 3 23 5th International Workshop on OMNeT++ (OMNeT++'12), Desenzano del Garda, Italy horizon https://www.comsys.rwth-aachen.de/fileadmin/papers/2012/2012-kunz-omnetpp-sequencechart.pdf Online ICST 5th International Workshop on OMNeT++ (OMNeT++'12), Desezano del Garda, Italy en 1 GeorgKunz SimonTenbusch JamesGross KlausWehrle 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-extremecom-goliath-adama 2012 3 10 1--2 In this demo we present our architecture for delivering ap- plication services via Disruption or Delay Tolerant Networks (DTNs). The search for a killer application is still ongoing. Our architecture enables the community to quickly proto- type new services and test them in the real world, outside of simulators. Common tasks such as data transportation through the network is handled by the framework but can still be in uenced by the service, if required. A robust plu- gin architecture allows to deploy new applications and rout- ing schemes without aecting stable-running services on the same network, even if the source of the new plugin is un- trusted. Demo Abstract http://extremecom2012.ee.ethz.ch/papers/7-extremecom2012-Goliath.pdf Online Hui, Pan and Lindgren, Anders ETH Zurich

Zurich, Switzerland

Proceedings of the 4th Extreme Conference on Communication Zurich Switzerland 4th Extreme Conference on Communication March 10-14, 2012 en 1 AndréGoliath Jó AgilaBitsch Link KlausWehrle inproceedings Punal12_Jamming 2012 83--92 ACM Proc. of the 9th ACM International Workshop on Vehicular Inter-Networking, Systems, and Applications (VANET'12) OscarPuñal AnaAguiar JamesGross inproceedings Punal12_PowerLoading 2012 1-4 Proc. of the IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'12) OscarPuñal HumbertoEscudero JamesGross inproceedings Li2012DySPAN 2012 Proc. of the IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN'12) DiLi JamesGross phdthesis 2012-goetz-phdthesis 2012 RWTH Aachen University StefanGötz inproceedings Varj1112:Secure 2011 12 5 Many efforts of the network research community focus on the introduction ofa new identifier to relieve the IP address from its dual role of end-hostidentifier and routable locator. This identifier-locator split introduces anew identifier between human readable domain names and routable IPaddresses. Mapping between identifiers and locators requires additionalname mapping mechanisms because their relation is not trivial. Despite itspopularity and efficiency, the DNS system is not a perfect choice forperforming this mapping because identifiers are not hierarchicallystructured and mappings are frequently updated by users. In this paper wediscuss the features needed to resolve flat identifiers to locators in asecure manner. In particular, we focus on the features and the performancethat identifier-locator split protocols require from a mapping system. Tothis end, we consider a mapping system for an identifier-locator splitbased mobility solution and evaluate its performance. IndexTerms—Identifier-locator split, Name resolution, Host Identity Protocol,Security, DNS, DHT, OpenDHT DHT; DNS; Host Identity Protocol; Security; Identifier-locator split; Nameresolution fileadmin/papers/2011/2011-varjonen-secure.pdf Online IEEE

Piscataway, NJ, USA

IEEE GLOBECOM 2011 - Next Generation Networking Symposium (GC'11 - NGN), Awarded the NGN Best Paper Award accepted en 978-1-4244-9268-8 1930-529X 1 SamuVarjonen TobiasHeer KennethRimey AndreiGurtov 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 Dombrowski2011LCN 2011 10 4 1--3 http://www.ieeelcn.org/prior/LCN36/lcn36demos/lcn-demo2011_dombrowski.pdf http://www.ieeelcn.org/prior/LCN36/lcn36demos.html Proc. of Local Computer Networks Conference, Demonstrations, (LCN'11) Bonn, Germany 36th IEEE Conference on Local Computer Networks (LCN) 04/10/2011 1 ChristianDombrowski JamesGross article 2011-heer-iot-journal Springer Wireless Personal Communications Journal 2011 10 61 3 527-542 A direct interpretation of the term Internet of Things refers to the use of standard Internet protocols for the human-to-thing or thing-to-thing communication in embedded networks. Although the security needs are well-recognized in this domain, it is still not fully understood how existing IP security protocols and architectures can be deployed. In this paper, we discuss the applicability and limitations of existing Internet protocols and security architectures in the context of the Internet of Things. First, we give an overview of the deployment model and general security needs. We then present challenges and requirements for IP-based security solutions and highlight specific technical limitations of standard IP security protocols. iotsec fileadmin/papers/2011/2011-heer-iot-challenges.pdf Online Springer

Netherlands

en 0929-6212 10.1007/s11277-011-0385-5 1 TobiasHeer OscarGarcia-Morchon RenéHummen Sye LoongKeoh Sandeep S.Kumar KlausWehrle inproceedings 2011-wintech-alizai-tinywifi 2011 9 19-27 tinywifi fileadmin/papers/2011/2010-09-tinywifi-alizai-wintech.pdf Online ACM

New York, NY, USA

Proceedings of the Sixth ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and Characterization (WiNTECH ), Las Vegas, NV, USA Las Vegas, NV, USA The 17th Annual International Conference on Mobile Computing and Networking September 2011 en 978-1-4503-0867-0 10.1145/2030718.2030725 1 Muhammad HamadAlizai HannoWirtz BernhardKirchen TobiasVaegs OmprakashGnawali KlausWehrle inproceedings 2011-kunz-mascots-performance-prediction 2011 7 25 359 - 368 horizon fileadmin/papers/2011/2011-kunz-performance-prediction-mascots.pdf Online IEEE Computer Society

Los Alamitos, CA, USA

Proceedings of the 19th Annual Meeting of the IEEE International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS'11), Singapore Singapore 19th Annual Meeting of the IEEE International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems July 25-17, 2011 en 978-1-4577-0468-0 1526-7539 10.1109/MASCOTS.2011.15 1 GeorgKunz SimonTenbusch JamesGross 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-iscc-alizai-ble 2011 6 fileadmin/papers/2011/2011-alizai-iscc-ble.pdf Online IEEE Computer Society

Los Alamitos, CA, USA

16th IEEE Symposium on Computers and Communications (ISCC), Kerkyra, Greece Kerkyra, Greece en 978-1-4577-0678-3 10.1109/ISCC.2011.5983839 1 Muhammad HamadAlizai HannoWirtz GeorgKunz BenjaminGrap KlausWehrle inproceedings Dombrowski2011RealWIN 2011 4 11 1 -6 Proc. of Workshop on Real-Time Wireless For Industrial Applications (RealWIN'11) 1 ChristianDombrowski JamesGross inproceedings 2011-ipsn-alizai-pad 2011 4 fileadmin/papers/2011/2011-ipsn-alizai-pad.pdf Online ACM

New York, NY, USA

Proceedings of the 10th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2011), Chicago, IL, USA Chicago, IL, USA en 978-1-60558-988-6 1 Muhammad HamadAlizai TobiasVaegs OlafLandsiedel StefanGötz Jó AgilaBitsch Link KlausWehrle 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 inproceedings PunalScOff11 2011 Proc. of the 18th IEEE International Workshop on Local and Metropolitan Area Networks (LANMAN'11) OscarPuñal JamesGross inproceedings Punal11 2011 124--132 Proc. of the 73rd IEEE Vehicular Technology Conference (VTC-Spring'11) OscarPuñal HumbertoEscudero JamesGross inproceedings Li2011ICC 2011 1 -6 Proc. of IEEE International Conference on Communications (ICC'11) DiLi JamesGross inproceedings 2010-kunz-mascots-horizon 2010 8 18 172-181 The simulation models of wireless networks rapidly increase in complexity to accurately model wireless channel characteristics and the properties of advanced transmission technologies. Such detailed models typically lead to a high computational load per simulation event that accumulates to extensive simulation runtimes. Reducing runtimes through parallelization is challenging since it depends on detecting causally independent events that can execute concurrently. Most existing approaches base this detection on lookaheads derived from channel propagation latency or protocol characteristics. In wireless networks, these lookaheads are typically short, causing the potential for parallelization and the achievable speedup to remain small. This paper presents Horizon, which unlocks a substantial portion of a simulation model's workload for parallelization by going beyond the traditional lookahead. We show how to augment discrete events with durations to identify a much larger horizon of independent simulation events and efficiently schedule them on multi-core systems. Our evaluation shows that this approach can significantly cut down the runtime of simulations, in particular for complex and accurate models of wireless networks. horizon fileadmin/papers/2010/2010-kunz-mascots-horizon.pdf Online IEEE Computer Society

Los Alamitos, CA, USA

Proceedings of the 18th Annual Meeting of the IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS'10), Miami, FL, USA Miami, FL, USA 18th Annual Meeting of the IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS'10) August 17-19, 2010 en 978-0-7695-4197-6 1526-7539 10.1109/MASCOTS.2010.26 1 GeorgKunz OlafLandsiedel JamesGross StefanGötz FarshadNaghibi KlausWehrle inproceedings 2010-heer-pisa-sa 2010 8 2 1 588-593 With the goal of providing ubiquitous wireless services (e.g., tourist guides, environmental information, pedestrian navigation), municipal wireless networks are currently being established all around the world. For municipalities, it is often challenging to achieve the bandwidth and coverage that is necessary for many of the envisioned network services. At the same time, Wi-Fi-sharing communities achieve high bandwidth and good coverage at a very low cost by capitalizing on the dense deployment of private access points in urban areas. However, from a technical, conceptual, and security perspective, Wi-Fi sharing community networks resemble a patchwork of heterogeneous networks instead of one well-planned city-wide network. This patchwork character stands in stark contrast to a uniform, secure platform for public and commercial services desirable for the economic success of such a network. Hence, despite its cost-efficiency, the community-based approach cannot be adopted by municipalities easily. In this paper, we show how to realize municipal wireless services on top of a Wi-Fi-sharing infrastructure in a technically sound and economically attractive fashion. In particular, we focus on how to securely provide services to mobile clients with and without client-side software support. Our solution cleanly separates the roles of controlling and administering the network from providing bandwidth and wireless access. With this separation, commercial ISPs and citizens with their private Wi-Fi can contribute to the network infrastructure. This allows municipalities in turn to focus their resources on municipal wireless services. mobile_access http://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-heer-icc-pisa-sa.pdf Print IEEE Press

Washington, DC, USA

International Conference on Computer Communication Networks, ICCCN 2010, Zurich Zurich, Switzerland International Conference on Computer Communication Networks, ICCCN 2010 en 978-1-4244-7114-0 10.1109/ICCCN.2010.5560103 1 TobiasHeer ThomasJansen RenéHummen HannoWirtz StefanGötz EliasWeingaertner KlausWehrle inproceedings 201004IPSNbitschratmote 2010 4 12 432--433 In this work, we present RatMote, a new wireless sensor node for subterranean animal habitat monitoring. RatMote has been developed for project RatPack, which aims at creating a new method for behavioral research on rats in their natural environment using wireless sensor nodes. Recent development in microcontroller architecture allowed us to design a sensor node which calculates up to 22 times more operations per mAh than the widely used TelosB node. This significant performance and efficiency increase allows us to perform computationally demanding algorithms inside the node, needed for vocalization analysis, localization, and mapping. Demo Abstract RatPack fileadmin/papers/2010/2010-04-IPSN-bitsch-ratmote.pdf http://doi.acm.org/10.1145/1791212.1791291 Online ACM

New York City, NY, USA

IPSN '10 Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN 2010), Stockholm, Sweden ACM 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 http://doi.acm.org/10.1145/1791212.1791291 1 Jó AgilaBitsch Link ThomasBretgeld AndréGoliath KlausWehrle inproceedings 2010-percomws-heer-munifi Proceedings of the Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010), IEEE. 2010 4 2 1 588 - 593 Municipal Wi-Fi networks aim at providing Internet access and selected mobile network services to citizens, travelers, and civil servants. The goals of these networks are to bridge the digital divide, stimulate innovation, support economic growth, and increase city operations efficiency. While establishing such urban networks is financially challenging for municipalities, Wi-Fi-sharing communities accomplish good coverage and ubiquitous Internet access by capitalizing on the dense deployment of private access points in urban residential areas. By combining Wi-Fi communities and municipal Wi-Fi, a collaborative municipal Wi-Fi system promises cheap and ubiquitous access to mobile city services. However, the differences in intent, philosophy, and technical realization between community and municipal Wi-Fi networks prevent a straight-forward combination of both approaches. In this paper, we highlight the conceptual and technical challenges that need to be solved to create collaborative municipal Wi-Fi networks. mobile_access http://www.comsys.rwth-aachen.de/fileadmin/papers/2010/2010-heer-percomws-collaborative-municipal-wi-fi.pdf Print IEEE Press

Washington, DC, USA

Proceedings of the Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010), Mannheim, Germany. Mannheim, Germany Sixth IEEE PerCom Workshop on Pervasive Wireless Networking (PWN 2010) April 02, 2010 en 978-1-4244-6605-4 10.1109/PERCOMW.2010.5470505 TobiasHeer RenéHummen NicolaiViol HannoWirtz StefanGötz KlausWehrle inproceedings DBLP:conf/webist/ChristophGK10 2010 4 2 48-54 Print Joaquim Filipe and José Cordeiro INSTICC Press WEBIST 2010, Proceedings of the 6th International Conference on Web Information Systems and Technologies, Valencia, Spain en 978-989-674-025-2 UtaChristoph DanielGötten Karl-HeinzKrempels inbook 2010-02-book-alizai-hardware-and-systems 2010 2 1 99-117 http://www.network-simulation.info/ http://www.amazon.com/Modeling-Tools-Network-Simulation-Wehrle/dp/3642123309 Print Springer LNCS Chapter 7 Modeling and Tools for Network Simulation EN 978-3-642-12330-6 Muhammad HamadAlizai LeiGao TorstenKempf OlafLandsiedel book 2010-kai-euras2 2010 print EURAS

Hamburg, DE

en 978-3-86130-245-2 1 Jean-ChristopheGraz KaiJakobs 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 inproceedings 201003GarciaEffContAwareAccControlPMS 2010 Proceedings of the First IEEE PerCom Workshop on Pervasive Healthcare OscarGarcia-Morchon KlausWehrle inproceedings 201006GarciaIFIPTM 2010 ManyapplicationsrunningontheInternetoperateinfullyor semi-distributed fashion including P2P networks or social networks. Dis- tributed applications exhibit many advantages over classical client-server models regarding scalability, fault tolerance, and cost. Unfortunately, the distributed system operation also brings many security threats along that challenge their performance and reliability. In particular, faulty or mis- behaving nodes cannot collude to subvert the system operation. This paper addresses the above threats by applying cooperative security techniques to relevant distributed systems in the Internet. Our goal is to present methods that allow the peers to bootstrap basic trust relation- ships at the time of joining a distributed network and remove the peers if trust is lost. We consider the specific security caveats of the analyzed sys- tems, investigate the applicability of existing cooperative security-based protocols, and propose general design guidelines for cooperative-security protocol in described distributed systems. Print Springer

Berlin

Proceedings of IFIPTM 2010 - 4th International Conference on Trust Management Morioka, Japan 4th International Conference on Trust Management en 978-3-642-13445-6 1 DmitriyKuptsov OscarGarcia-Morchon KlausWehrle AndreiGurtov inproceedings 201006GarciaSacmat 2010 Medical sensor networks allow for pervasive health monitoring of users in hospitals, at home, or on the way. The privacy and confidentiality of medical data need to be guaranteed at any moment to make sure that unauthorized parties cannot retrieve confidential information. This is a great challenge due to two main reasons. First, wireless sensors are resource-constrained devices that limit the applicability of traditional solutions. Second, the access control system must be context-aware and adapt its security settings to ensure the users' safety during, e.g., medical emergencies. To solve these issues, this paper presents a modular context-aware access control system tailored to pervasive medical sensor networks in which the access control decisions and the response delay depend upon the health acuteness of a user. Our system extends traditional role-based access control systems by allowing for context-awareness in critical, emergency, and normal access control situations. We further present a lightweight encoding for our modular access control policies as well as an access control engine efficiently running on resource-constrained sensor nodes. Finally, we analyze how the proposed access control system suits existing security architectures for medical sensor networks.

Pittsburgh, USA

Proceedings of ACM Symposium on Access Control Models and Technologies (SACMAT'10) ACM 978-1-4503-0049-0 10.1145/1809842.1809864 1 OscarGarcia-Morchon KlausWehrle inproceedings 200912BitschSimBetAge 2009 12 1 13--18 In this paper, we present SimBetAge, a delay and disruption tolerant routing protocol for highly dynamic socially structured mobile networks. We exploit the lightweight and egocentric scheme of SimBet routing while at the same time taking the strength and the gradual aging of social relations into account and thereby increase the performance by one order of magnitude, especially in evolving network structures. We explore the model of similarity and betweenness over weighted graphs, and present a simulation on realistic traces from previous experiments, comparing our approach to the original SimBet, Epidemic Routing and Prophet. RatPack fileadmin/papers/2009/2009-12-Bitsch-SimBetAge.pdf http://portal.acm.org/citation.cfm?id=1659029.1659034&coll=DL&dl=GUIDE&CFID=6806120&CFTOKEN=29162094 http://conferences.sigcomm.org/co-next/2009/workshops/unet/papers/Link.pdf Online Paulo Mendes, Oliver Marcé ACM

New York City, NY, USA

U-NET '09 Proceedings of the 1st ACM workshop on User-provided networking: challenges and opportunities, Rome, Italy ACM Rome, Italy 1st ACM workshop on User-provided networking: challenges and opportunities 1 Dec. 2009 en 978-1-60558-750-9 http://doi.acm.org/10.1145/1659029.1659034 1 Jó AgilaBitsch Link NicolaiViol AndréGoliath KlausWehrle inproceedings 2009-sensys-alizai-burstytraffic 2009 11 71-84 wld fileadmin/papers/2009/2009-alizai-sensys-bre.pdf ACM

New York, NY, USA

Proceeding of 7th ACM Conference on Embedded Networked Sensor Systems (Sensys 09), Berkeley, CA, USA Berkley, California Sensys 09 November 2009 en 978-1-60558-519-2 1 Muhammad HamadAlizai OlafLandsiedel Jó AgilaBitsch Link StefanGötz KlausWehrle techreport 200908alizaifgsnburstyrouting 2009 9 63-66 Accurate estimation of link quality is the key to enable efficient routing in wireless sensor networks. Current link estimators focus mainly on identifying long-term stable links for routing, leaving out a potentiality large set of intermediate links offering significant routing progress. Fine-grained analysis of link qualities reveals that such intermediate links are bursty, i.e., stable in the short term. In this paper, we use short-term estimation of wireless links to accurately identify short-term stable periods of transmission on bursty links. Our approach allows a routing protocol to forward packets over bursty links if they offer better routing progress than long-term stable links. We integrate a Short Term Link Estimator and its associated routing strategy with a standard routing protocol for sensor networks. Our evaluation reveals an average of 22% reduction in the overall transmissions when routing over long-range bursty links. Our approach is not tied to any special routing protocol and integrates seamlessly with existing routing protocols and link estimators. wld fileadmin/papers/2009/2009-08-alizai-fgsn-bursty-routing.pdf doku.b.tu-harburg.de/volltexte/2009/581/pdf/proceedings.pdf Print Technical University Hamburg

Technical University Hamburg

Proceedings of the 8th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Hamburg, Germany en 1 Muhammad HamadAlizai OlafLandsiedel Jó AgilaBitsch Link StefanGötz KlausWehrle inproceedings 2009-landsiedel-visa-vipe 2009 8 17 45--52 Although the diversity of platforms for network experimentation is a boon to the development of protocols and distributed systems, it is challenging to exploit its benefits. Implementing or adapting the systems under test for such heterogeneous environments as network simulators, network emulators, testbeds, and end systems is immensely time and work intensive. In this paper, we present VIPE, a unified virtual platform for network experimentation, that slashes the porting effort. It allows to smoothly evolve a single implementation of a distributed system or protocol from its design up into its deployment by leveraging any form of network experimentation tool available. deployment, network experimentation, resource virtualization, simulation fileadmin/papers/2009/2009-landsiedel-visa-vipe.pdf Print ACM Press

New York, NY, USA

Proceedings of the 1st ACM SIGCOMM Workshop on Virtualized Infastructure Systems and Architectures, Barcelona, Spain Barcelona, Spain 1st ACM SIGCOMM Workshop on Virtualized Infastructure Systems and Architectures August 17, 2009 en 978-1-60558-595-6 10.1145/1592648.1592657 1 OlafLandsiedel GeorgKunz StefanGötz KlausWehrle inproceedings securityforpervasivemedicalsensornetworks 2009 7 13 1 http://www.comsys.rwth-aachen.de/fileadmin/papers/2009/2009-garcia-mobiq.pdf Print IEEE Press

Washington, DC, USA

6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009), Toronto ICST/IEEE Toronto, CAN 6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009) en 978-963-9799-59-2 10.4108/ICST.MOBIQUITOUS2009.6832 1 OscarGarcia-Morchon ThomasFalck TobiasHeer KlausWehrle inproceedings 200907BitschMOBIQUITOUS09SimBetAge 2009 7 13 1--2 In this paper, we present SimBetAge, an extension to SimBet taking into account the gradual aging of connections in social networks which thereby increases the performance by an order of magnitude, especially in evolving network structures. For this purpose, we redefine similarity and betweenness to make use of weighted social network graphs. poster and abstract RatPack fileadmin/papers/2009/2009-07-Bitsch-Mobiquitous09-SimBetAge.pdf http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5326363 Online IEEE

New York City, NY, USA

Proceedings of the 6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009), Toronto, ON, Canada ICST/IEEE Toronto, ON, Canada 6th Annual International Conference on Mobile and Ubiquitous Systems (MobiQuitous 2009) July 13-16, 2009 en 978-963-9799-59-2 10.4108/ICST.MOBIQUITOUS2009.7017 1 Jó AgilaBitsch Link NicolaiViol AndréGoliath KlausWehrle 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 poster 2009-kunz-nsdi-profab 2009 4 22 fileadmin/papers/2009/2009-kunz-nsdi-protocolFactory.pdf Poster Online USENIX Association

Berkeley, CA, USA

6th USENIX Symposium on Networked Systems Design and Implementation (NSDI'09) en 1 GeorgKunz OlafLandsiedel StefanGötz KlausWehrle article Gross09a Elsevier Performance Evaluation Journal 2009 66 3-5 240--257 JamesGross MarcEmmelmann OscarPuñal AdamWolisz inproceedings Gross09 2009 220--233 Proc. of the 8th International IFIP Networking Conference (NETWORKING'09) JamesGross OscarPuñal MarcEmmelmann inproceedings 200906MobiArchgoetzprotocolorchestration 2009 43-50 The diversity of today's networking environments, such as wired, wireless, cell-based, or multi-hop, is matched by an equally large amount and heterogeneity of specialized protocols, e.g., overlays, Wi-Fi positioning, MANET routing, cross-layer signaling. However, communication is typically performed with a static set of protocols selected at design time based on simplified assumptions ignoring the environment's heterogeneity. In this paper, we argue that protocols can be orchestrated as software components driven purely by their functionality and the demands of the execution environment. Our end-system protocol framework Adapt bases on extensible ontological models that semantically describe protocol and environment properties. At runtime, each connection receives a custom-tailored protocol stack that Adapt orchestrates from the requirements derived from the application, user, and environment. With this approach, end-systems can reason about the functionality and quality of automatically composed and adapted protocol compounds while remaining open to existing and future protocols. https://www.comsys.rwth-aachen.de/fileadmin/papers/2009/2009-goetz-mobiarch-protocol-orchestration.pdf print Krzysztof Zielinski and Adam Wolisz and Jason Flinn and Anthony LaMarca ACM

New York, NY, USA

print Proceedings of the Fourth ACM International Workshop on Mobility in the Evolving Internet Architecture (ACM MobiArch '09) ACM Sigcomm/Sigmobile Krakow, Poland Fourth ACM International Workshop on Mobility in the Evolving Internet Architecture (ACM MobiArch '09), Krakow, Poland 2009-06-22 en 1 StefanGötz TobiasHeer KlausWehrle inproceedings 2009morchonpodckeyagreementwsn 2009 1 326-327 Brief Announcement Print ACM

New York, NY, USA

Proceedings of the 28th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC 2009), Calgary Calgary, CN 28th ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing (PODC 2009) en 978-963-9799-59-2 10.1145/1582716.1582791 1 OscarGarcia-Morchon TobiasHeer LudoTolhuizen KlausWehrle inproceedings 2009-icc-heer-middleboxes 2009 1 791-796 Today, middleboxes such as firewalls and network address translators have advanced beyond simple packet forwarding and address mapping. They also inspect and filter traffic, detect network intrusion, control access to network resources, and enforce different levels of quality of service. The cornerstones for these security-related network services are end-host authentication and authorization. Using a cryptographic namespace for end-hosts simplifies these tasks since it gives them an explicit and verifiable identity. The Host Identity Protocol (HIP) is a key-exchange protocol that introduces such a cryptographic namespace for secure end-to-end communication. Although HIP was designed with middleboxes in mind, these cannot securely use its namespace because the on-path identity verification is susceptible to replay attacks. Moreover, the binding between HIP as an authentication protocol and IPsec as payload transport is insufficient because on-path middleboxes cannot securely map payload packets to a HIP association. In this paper, we propose to prevent replays attack by treating packet-forwarding middleboxes as first-class citizens that directly interact with end-hosts. Also we propose a method for strengthening the binding between the HIP authentication process and its payload channel with hash-chain-based authorization tokens for IPsec. Our solution allows on-path middleboxes to efficiently leverage cryptographic end-host identities and integrates cleanly into existing protocol standards. mobile_access http://www.comsys.rwth-aachen.de/fileadmin/papers/2009/2009-heer-icc-end-host-authentication.pdf Print Piscataway, NJ, USA

Dresden, Germany

Proceedings of the IEEE International Conference on Communications 2009 (ICC 2009), Dresden, Gemany IEEE Dresden, Germany IEEE International Conference on Communications 2009 (ICC 2009) en 978-1-4244-3435-0 1938-1883 10.1109/ICC.2009.5198984 1 TobiasHeer RenéHummen MiikaKomu StefanGötz KlausWehrle inproceedings goetz2008adapt 2008 12 10 5343/2008 287-292 Although modularized protocol frameworks are flexible and adaptive to the increasing heterogeneity of networking environments, it remains a challenge to automatically compose communication stacks from protocol modules. The typical static classification into network layers or class hierarchies cannot appropriately accommodate cross-cutting changes such as overlay routing or cross-layer signaling. In this paper, we discuss how protocol composition can be driven by functionality and demand at runtime based on extensible semantic models of protocols and their execution environment. Such an approach allows to reason about the functionality and quality of automatically composed and adapted protocol compounds and it is open to existing and future protocols. https://www.comsys.rwth-aachen.de/fileadmin/papers/2008/2008-goetz-mobiarch-adapt.pdf Print Karin Anna Hummel and James P. G. Sterbenz Springer-Verlag

Tiergartenstraße 17, 69121 Heidelberg, Germany

Lecture Notes in Computer Science Proceedings of the 3rd International Workshop on Self-Organizing Systems, Vienna, Austria Vienna, Austria 3rd International Workshop on Self-Organizing Systems (IWSOS) 2008-12-10 en 978-3-540-92156-1 10.1007/978-3-540-92157-8\_27 1 StefanGötz ChristianBeckel TobiasHeer KlausWehrle inproceedings heer-2008-conext-alpha 2008 12 1 23:1--23:12 http://www.comsys.rwth-aachen.de/fileadmin/papers/2008/2008-heer-conext-alpha.pdf Print ACM

New York, NY, USA

CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference, Madrid, Spain Madrid, Spain ACM Conext 2008 December 2008 en 978-1-60558-210-8 10.1145/1544012.1544035 1 TobiasHeer StefanGötz OscarGarcia-Morchon KlausWehrle conference 2008-heer-pisa-full 2008 6 16 1 1-7 The proliferation of broadband Internet connections has lead to an almost pervasive coverage of densely populated areas with private wireless access points. To leverage this coverage, sharing of access points as Internet uplinks among users has first become popular in communities of individuals and has recently been adopted as a business model by several companies. However, existing implementations and proposals suffer from the security risks of directly providing Internet access to strangers. In this paper, we present the P2P Wi-Fi Internet Sharing Architecture PISA, which eliminates these risks by introducing secure tunneling, cryptographic identities, and certificates as primary security concepts. Thus, PISA offers nomadic users the same security that they expect from a wired Internet connection at home. Based on its three fundamental mechanisms, PISA achieves a flexibility which opens significant advantages over existing systems. They include user mobility, anonymity, service levels with different performance and availability characteristics, and different revenue models for operators. With this combination of key features, PISA forms an essential basis for global, seamless, and secure Wi-Fi sharing for large communities. mobile_access http://www.comsys.rwth-aachen.de/fileadmin/papers/2008/2008-heer-ict-secure-wifi.pdf Print IEEE

Washington, DC, USA

Proc. of 15th International Conference on Telecommunication (ICT), St. Petersburg, Russian Federation St. Petersburg, Russian Federation 15th International Conference on Telecommunication (ICT) 16-19 June 2008 en 978-1-4244-2035-3 1 TobiasHeer StefanGötz EliasWeingaertner KlausWehrle inproceedings wessel2008GMDS 2008 665-667 German Medical Science GMS Publishing House 53. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (gmds). Brückenschlag von Medizinischer Informatik, Biometrie und Epidemiologie zur Medizintechnik, Stuttgart, Germany en ChristaWeßel SandraGeisler UtaChristoph inproceedings Gross07 2007 124--132 Proc. of ACM/IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWIM'07) JamesGross MarcEmmelmann OscarPuñal AdamWolisz inproceedings GarciaMorchonEtAl2007 2007 1 Print IEEE

Washington, DC, USA

1 Proceedings of the third International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2007 IEEE CollaborateCom en 978-1-4244-1318-8 1 OscarGarcia-Morchon HeribertBaldus TobiasHeer KlausWehrle inproceedings 2006-heer-percomws-adapt-dht 2006 3 16 1 1-6 http://www.comsys.rwth-aachen.de/fileadmin/papers/2005/2006-heer-percomws-dht-adhoc.pdf Print IEEE

Washington, DC, USA

In Proceedings of 3. IEEE International Workshop on Mobile Peer-to-Peer Computing (MP2P'06), Pisa, Italy. Pisa, Italy IEEE International Workshop on Mobile Peer-to-Peer Computing March 2006 en 0-7695-2520-2 10.1109/PERCOMW.2006.16 1 TobiasHeer StefanGötz SimonRieche KlausWehrle inproceedings 200608landsiedelp2p06scalablemobility 2006 203-209 For the use in the Internet domain, distributed hash tables (DHTs) have proven to be an efficient and scalable approach to distributed content storage and access. In this paper, we explore how DHTs and mobile ad-hoc networks (MANETs) fit together. We argue that both share key characteristics in terms of self organization, decentralization, redundancy requirements, and limited infrastructure. However, node mobility and the continually changing physical topology pose a special challenge to scalability and the design of a DHT for mobile ad-hoc networks. In this paper, we show that with some local knowledge we can build a scalable and mobile structured peer-to-peer network, called Mobile Hash Table (MHT). Furthermore, we argue that with little global knowledge, such as a map of the city or whatever area the nodes move in, one can even further improve the scalability and reduce DHT maintenance overhead significantly, allowing MHT to scale up to several ten thousands of nodes. https://www.comsys.rwth-aachen.de/fileadmin/papers/2006/2006-landsiedel-p2p-mobility.pdf print IEEE

Washington, DC, USA

print Proceedings of the Sixth IEEE International Conference on Peer-to-Peer Computing (P2P'06), Cambridge, UK IEEE Cambridge, UK Sixth IEEE International Conference on Peer-to-Peer Computing (P2P'06) 2006-09-06 en 0-7695-2679-9 10.1109/P2P.2006.46 1 OlafLandsiedel StefanGötz KlausWehrle inproceedings 200503goetzp2psawindowsfilesharing 2005 2 28 61 143-146 Although File and printer sharing services have been deployed almost ubiquitously for a long time as part of Microsoft Windows, only recent peer-to-peer applications popularized file-sharing on a global scale. As the Windows CIFS protocol was designed for local area networks, its use has been con?ned to relatively small environments. We propose a mechanism to set up spontaneous virtual groups that allow to use legacy Windows file and printer sharing globally in virtual LANs. https://www.comsys.rwth-aachen.de/fileadmin/papers/2005/2005-goetz-kivs-spontaneous-file-sharing.pdf print Paul Müller, Reinhard Gotzhein, Jens B. Schmitt Gesellschaft für Informatik (GI)

Bonn, Germany

print LNI Proceedings of Workshop on Peer-to-Peer-Systems and -Applications Gesellschaft für Informatik (GI) Kaiserslautern, Germany Kommunikation in Verteilten Systemen (KiVS), Kaiserslautern, Germany 2005-02-28 en 3-88579-390-3 1 StefanGötz KlausWehrle inbook 200509riechep2pbookreliability 2005 119-135 Ralf Steinmetz, Klaus Wehrle Springer

Heidelberg, Germany

Lecture Notes in Computer Science, LNCS 9 Peer-to-Peer Systems and Applications SimonRieche HeikoNiedermayer StefanGötz KlausWehrle inbook 200509goetzp2pbookdhtalgorithms 2005 95-117 Ralf Steinmetz, Klaus Wehrle Springer

Heidelberg, Germany

Lecture Notes in Computer Science, LNCS 8 Peer-to-Peer Systems and Applications StefanGötz SimonRieche KlausWehrle inbook 200509wehrlep2pbookdhts 2005 79-93 Ralf Steinmetz, Klaus Wehrle Springer

Heidelberg, Germany

Lecture Notes in Computer Science, LNCS 7 Peer-to-Peer Systems and Applications KlausWehrle StefanGötz SimonRieche inproceedings 200503landsiedelfgsnaeon 2005 481 72-76 Power consumption is a crucial characteristic of sensor networks and their applications, as sensor nodes are commonly battery driven. Although recent research focuses strongly on energy aware applications and operating systems, power consumption is still a limiting factor. Once sensor nodes are deployed, it is challenging and sometimes even impossible to change batteries. As a result, erroneous lifetime prediction causes high costs and may render a sensor network useless, before its purpose is fulfilled. In this paper we present AEON, a novel evaluation tool to quantitatively predict power consumption of sensor nodes and whole sensor networks. Our energy model, based on measurements of node current draw and the execution of real code, enables accurate prediction of the actual power consumption of sensor nodes. Consequently, preventing erroneous assumptions on node and network lifetime. Moreover, our detailed energy model allows to compare different low power and energy aware approaches in terms of energy efficiency.

Zürich, CH

Proceedings of the 4th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Techical Report No. 481 OlafLandsiedel KlausWehrle SimonRieche StefanGötz LeoPetrak inproceedings 200511goetzmmsctransparent 2005 31-36 Mobile devices have become a popular medium for delivering multimedia services to end users. A large variety of solutions have been proposed to flexibly compose such services and to provide quality-of-service guarantees for the resulting contents. However, low-level mobility artifacts resulting from network transitions (disconnected operation, reconfiguration, etc.) still prevent a seamless user experience of these technologies. This paper presents an architecture for supporting legacy applications with such solutions in mobile scenarios. Through network virtualization, it hides mobility artifacts and ensures connectivity at the network and transport level. Its adoption for multimedia applications poses unique challenges and advantages, which are discussed herein. https://www.comsys.rwth-aachen.de/fileadmin/papers/2005/2005-goetz-mmc-transparent-service-composition.pdf print Wolf-Tilo Balke and Klara Nahrstedt ACM

New York, NY, USA

print Proceedings of the First ACM International Workshop on Multimedia Service Composition at International Multimedia Conference ACM Singapore First ACM International Workshop on Multimedia Service Composition at International Multimedia Conference, Singapore 2005-08-01 en 1-59593-245-3 10.1145/1099423.1099430 1 StefanGötz KlausWehrle inproceedings 200410riechehotp2preliability 2004 10 108-113 Peer-to-Peer (P2P) systems are very useful for managing large amounts of widely distributed data. For this purpose Distributed Hash Tables (DHT) offer a highly scalable and self-organizing paradigm for efficient distribution and retrieval of data. Thereby a common assumption of P2P-Systems is, that the participating nodes are unreliable and may fail at any time. Since many of research goes into the design of DHT lookup services, these systems aim to provide a stable global addressing structure. But to storage data reliable in a DHT only few techniques were already developed. However since data has to be stored persistent in the network, it should be retrieved anytime, even if nodes fail. In this work we discuss possibilities to store data fault tolerant in a structured Peer-to-Peer system. Print Proceedings of HOT-P2P '04: Hot Topics in Peer-to-Peer Computing at 12th Annual Meeting of the IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS) Volendam, Netherlands HOT-P2P '04: Hot Topics in Peer-to-Peer Computing at 12th Annual Meeting of the IEEE International Symposium on Modeling, Analysis, and Simulation of Computer Oct. 2004 en 1 SimonRieche KlausWehrle OlafLandsiedel StefanGötz LeoPetrak inproceedings 200410wehrlefgpcintegriertekonstruktionsmethode 2004

Stuttgart, Germany

Proceedings of the GI/ITG KuVS Fachgespräch Systemsoftware für Pervasive Computing KlausWehrle OlafLandsiedel SimonRieche StefanGötz LeoPetrak inproceedings 200407wehrlesmsoipncontentoriented 2004 04411 Matthias Bossardt and Georg Carle and D. Hutchison and Hermann de Meer and Bernhard Plattner Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI), Schloss Dagstuhl, Germany Dagstuhl Seminar Proceedings Service Management and Self-Organization in IP-based Networks KlausWehrle StefanGötz