TY - GEN A1 - Kirsche, Michael A1 - Dreissig, Matthias A1 - Kopsch, Ralf A1 - Gäbler, Jan A1 - Klauck, Ronny A1 - Pink, Mario A1 - Liu, Fuwen A1 - König, Hartmut T1 - uBeeMe - Eine Plattform zur Unterstützung mobiler kollaborativer Anwendungen T2 - Praxis der Informationsverarbeitung und Kommunikation : (PIK) Y1 - 2011 U6 - https://doi.org/10.1515/PIKO.2011.003 SN - 0930-5157 VL - 34 IS - 1 SP - 11 EP - 22 ER - TY - GEN A1 - Gäbler, Jan A1 - Klauck, Ronny A1 - Schöpke, Sebastian A1 - König, Hartmut A1 - Werner, Martin A1 - Roth, Jörg T1 - Lemon Tree - Flexible Deichüberwachung mit XMPP und Cloud-Diensten T2 - 8. GI/ITG KuVS-Fachgespräch Ortsbezogene Anwendungen und Dienst Y1 - 2011 SN - 978-3-8325-3041-9 SP - 137 EP - 148 PB - Logos-Verlag CY - Berlin ER - TY - GEN A1 - König, Hartmut A1 - Gäbler, Jan A1 - Klauck, Ronny A1 - Pink, Mario A1 - Sprejz, Michael T1 - uBeeMe - A Platform for Mobile Collaborative Applications T2 - PIK - Praxis der Informationsverarbeitung und Kommunikation Y1 - 2013 U6 - https://doi.org/10.1515/pik-2012-0058 SN - 0930-5157 VL - 36 IS - 1 SP - S. 43 ER - TY - GEN A1 - Gäbler, Jan A1 - König, Hartmut T1 - Moversight: a group communication protocol for mobile scenarios T2 - Telecommunication systems : modeling, analysis, design and managementversion N2 - The increasing mobility of Internet users and the growing need to collaborate with staff travelling on business belong to the key characteristics of the future Internet. Mobile collaborative applications require novel schemes for group communication that actively support collaborations in wireless scenarios. An intrinsic problem of collaborations in wireless scenarios is the temporary connection loss with the group due to user mobility and network issues. Existing group communication protocols do not sufficiently support this situation. In this paper, we present a new peer-to-peer group communication protocol, called Moversight, that was specifically designed to support closed group cooperation in mobile environments with varying churn rates. It applies a new group communication paradigm, called mobile optimistic virtual synchrony, to handle churn-related peer failures. It enhances the virtual synchrony paradigm for mobile scenarios. The paper introduces the paradigm and describes the main protocol features of Moversight. Finally we present simulation results to demonstrate the applicability of the protocol. KW - Mobile group communication, Mobility support, Mobile collaborative applications, Closed groups, Group communication system, Virtual synchrony Y1 - 2016 UR - http://link.springer.com/article/10.1007%2Fs11235-015-0062-1 U6 - https://doi.org/10.1007/s11235-015-0062-1 SN - 1572-9451 SN - 1018-4864 VL - 61 IS - 4 SP - 695 EP - 716 ER - TY - CHAP A1 - Gäbler, Jan A1 - König, Hartmut T1 - Distributed Cluster-Topology Maintenance for Mobile Collaborative Applications T2 - IEEE 41st Conference on Local Computer Networks (LCN), 7-10 Nov. 2016 N2 - Nowadays, collaborative applications play an increasing role in mobile communications in order to enable cooperation among mobile and/or stationary participants – often using the peer-to-peer (P2P) group communication paradigm. The probability of communication failures increases in mobile environments. As a consequence, frequent leaving and joining of partners can be observed resulting in unstable group topologies. A widely used approach is to divide the group into peer clusters that are fully meshed among each other. In this paper, we propose an application-independent approach for a periodic maintenance of distributed cluster-based group topologies for mobile collaborative applications. The proposed approach also dynamically adapts the overlay structure to changing network conditions. The maintenance strategy can be parametrized by several metrics. It outperforms simple overlay maintenance strategies, such as round-robin, by respecting the resource and computation limitations of mobile devices. The run-time is increased by 10% in the best case compared to LEACH, and by 3 — 5% on average. We describe the approach and evaluate its performance w.r.t. different metrics. Y1 - 2016 UR - http://ieeexplore.ieee.org/document/7796799/ SN - 978-1-5090-2054-6 SN - 978-1-5090-2055-3 U6 - https://doi.org/10.1109/LCN.2016.55 SP - 271 EP - 279 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Gäbler, Jan A1 - König, Hartmut T1 - Enhancing Group Communication Systems with Mobility Support T2 - Proceedings of the 19th IEEE International Conference on Networks (ICON 2013), Singapore, December 2013 Y1 - 2014 SN - 978-1-4799-2085-3 SP - 342 EP - 347 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Gäbler, Jan A1 - Klauck, Ronny A1 - Pink, Mario A1 - König, Hartmut T1 - uBeeMe - a Platform to Enable Mobile Collaborative Applications T2 - Proceedings of the 9th International Conference on Collaborative Computing: Networking, Applications and Worksharing (CollaborateCom 2013), Austin, Texas, USA, October, 2013 Y1 - 2013 SP - 188 EP - 196 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Gäbler, Jan A1 - König, Hartmut T1 - Moversight: A Group Communication Protocol for Mobile Collaborative Applications T2 - Proceedings of the 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2013), Dubai, United Arab Emirates, 23 - 25th April 2013 Y1 - 2013 SN - 978-1-4673-5615-2 SN - 978-1-4673-5614-5 SP - 72 EP - 79 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Gäbler, Jan A1 - König, Hartmut T1 - Distributed latency estimation using global knowledge for mobile collaborative applications T2 - International Wireless Communications and Mobile Computing Conference (IWCMC) 2015, Dubrovnik, Croatia, 24-28 Aug. 2015 Y1 - 2015 U6 - https://doi.org/10.1109/IWCMC.2015.7289130 SP - 474 EP - 479 PB - IEEE ER - TY - GEN A1 - Gäbler, Jan A1 - König, Hartmut T1 - Moversight: An Approach to Support Mobility in Collaborative Applications Y1 - 2013 UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6578331 UR - http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6573245 SN - 978-1-4799-0747-2 N1 - 10th Annual Conference on Wireless On-demand Network Systems and Services (WONS), 2013 SP - 110 EP - 112 PB - IEEE ER - TY - GEN A1 - Klauck, Ronny A1 - Kirsche, Matthias A1 - Gäbler, Jan A1 - Schöpke, Sebastian T1 - Mobile XMPP and Cloud Service Collaboration: An Alliance for Flexible Disaster Management T2 - 7th International Conference on Collaborative Computing, Networking, Applications and Worksharing (CollaborateCom 2011), Orlando, Florida, USA, 15 - 18 October 2011 Y1 - 2011 SN - 978-1-467-30683-6 SP - 201 EP - 211 PB - IEEE CY - Piscataway, NJ ER -