Dr.-Ing.

Julien Gedeon

Hochschulstrasse 10 · 64289 Darmstadt · +49 1522 1665893 ·

I am heading the SUN (Smart Ubiquitous Network) group as a post-doctoral researcher at the Telecooperation Lab, TU Darmstadt. I hold a Ph.D and master degree in computer science (with a minor in psychology) from TU Darmstadt.

My interests originate in distributed networked systems. As such, I have a solid background in Cloud Computing. Currently, my research focuses on Edge Computing in conjunction with novel applications that make cities smarter. Furthermore, I am passionate about dinghy sailing, badminton, cooking, and growing cacti.
A detailed CV is available upon request.

Let's connect!


Skills

Core Competencies & Workflow
  • Team Leadership
    • Supervision of a team of doctoral researchers
  • Project Management
    • Project leader for a EU-funded activity involving different telco operators and universities
  • Agile Development & Scrum
  • Communication
    • Lecturer for a course on distributed systems
Coding & Tools
Languages
English    
German    
French    
Spanish    
Russian    
Awards & Grants
  • 2020EAI Senior Member
  • 2019Amazon AWS Research Grant
  • 2018Best Paper Award at MobiCASE
  • 2017Student Travel Grant (ICDCS)

Research

30 000-foot view
research pillars

My research group works on networked systems and aims at developing algorithms and mechanisms for various topology and protocol adaptation, task placement, and resource allocation, including transitions between subsequent optimal solutions. One core objective is to optimize the performance of networks and distributed systems for data-centric applications that rely on stream processing or real-time data analytics. As such, our research is divided into three main areas: Management of Networked Resources, Ubiquitous Computing Environments and Network Softwarization.

Networks in Smart Cities are our most prominent target domain. As a response to virtually unmanageable growth and unprecedented challenges, more and more cities are transformed into digitally interwoven human-device ecosystems. As part of this transition, large scale data are continuously generated, e.g., from environment sensors and mobile devices, and must be processed under increasingly tight real-time constraints to render the much-desired intelligent behavior of the smart city ecosystem.

Selected highlights

Storage at the Edge: vStore is a framework that enables context-aware storage decisions for applications. It provides a storage abstraction layer with the support for various kinds of storage nodes, ranging from cloud to edge storage. vStore decouples user-generated data from pre-defined storage locations and captures user intentions by combining various sources of contextual information. The framework facilitates sharing of data between different applications and adapts to changes in the network environment, e.g., in case of congestions.
vStore uses rules that follow the Event-Condition-Action (ECA) paradigm to make placement decisions. Rules can be defined globally and pushed to the devices, as well as configured locally. A rule specifies certain conditions that have to be fulfilled in order for that rule to be triggered. These can for instance be related to the current contextual information.

vStore screenshot

darmstadtCloud: darmstadtCloud aims to explore the possibility of providing a city-wide cloudlet infrastructure in Darmstadt. For this purpose, we collect locations of infrastructures on which cloudlets could be installed: Cellular base stations, WiFi access points and street lamps.
Users can explore the locations of the different access point types on an interactive map. In addition, we provide an API to third parties for accessing the dataset and performing spatial queries.
More information is available here.

darmstadtCloud screenshot

flexEdge: flexEdge is a framework for the flexible execution of services at the Edge. flexEdge uses composable microservices as a programming model for developers. Our framework furthermore supports the chaining of services and manages available microservices in a repository, as to avoid prior transfers from the client devices to the surrogates.
Our offloading granularity in flexEdge are microservices. Contrary to monolithic software, microservices are fine-grained functional components that are developed and deployed indepently. Microservices offer multiple advantages, e.g., short development cycles. In a resource-constrained edge environment, composable microservices are the ideal building blocks for the realization of applications. In contrast to client-based offloading, where client devices transfer the services (and sometimes the entire execution environment), our approach of store-based onloading fetches microservices from a repository-the microservice store- and transfers them to edge agents that execute them.

flexEdge architecture

Publications

Copyright notice: The material is offered as a means to ensure timely dissemination of scholarly and technical works on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, not withstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder(s).

2021
  • Chameleons on Cloudlets: Elastic Edge Computing Through Microservice Variants

    Julien Gedeon, Martin Wagner, Karolis Skaisgiris, Florian Brandherm, Max Mühlhäuser

    Techreport, arXiv CoRR

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    @inproceedings{gedeon2021-chameleons,
      title={Chameleons on Cloudlets: Elastic Edge Computing Through Microservice Variants}, 
      author={Julien Gedeon and Martin Wagner and Karolis Skaisgiris and Florian Brandherm and Max M{\"{u}}hlh{\"{a}}user},
      year={2021},
      eprint={2105.10355},
      archivePrefix={arXiv},
      primaryClass={cs.DC},
      url = {https://arxiv.org/abs/2105.10355}
    } 
2020
  • Urban Edge Computing

    Julien Gedeon

    Dissertation, TU Darmstadt

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    @phdthesis{gedeon2020-diss,
      title = {Urban Edge Computing},
      author = {Julien Gedeon},
      address = {Darmstadt},
      year = {2020},
      school = {Technische Universit{\"a}t Darmstadt},
      doi = {10.25534/tuprints-00013362},
      url = {http://tuprints.ulb.tu-darmstadt.de/13362/}
    } 
  • Sunstone: Navigating the Way Through the Fog

    Julien Gedeon, Sebastian Zengerle, Sebastian Alles, Florian Brandherm, Max Mühlhäuser

    IEEE International Conference on Fog and Edge Computing (ICFEC)

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    @inproceedings{gedeon2020-sunstone,
      title = {Sunstone: Navigating the Way Through the Fog}, 
      author = {Julien Gedeon and Sebastian Zengerle and Sebastian Alles and Florian Brandherm and Max M{\"{u}}hlh{\"{a}}user},
      booktitle = {Proceedings of 4th International Conference on Fog and Edge Computing (ICFEC)},
      year = {2020},
      publisher = {{IEEE}},
      doi = {10.1109/ICFEC50348.2020.00013},
      pages = {49-58},
      url = {https://ieeexplore.ieee.org/document/9139180}
    } 
  • An Assessment Framework for Edge Applications

    Martin Wagner, Julien Gedeon, Karolis Skaisgiris, Florian Brandherm, Max Mühlhäuser

    ACM/IEEE Symposium on Edge Computing: Posters

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    @inproceedings{wagner2020-assessment,
      title={{Poster: An Assessment Framework for Edge Applications}},
      author={Wagner, Martin and Gedeon, Julien and Skaisgiris, Karolis and Brandherm, Florian and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 2020 IEEE/ACM Symposium on Edge Computing (SEC): Posters},
      year = {2020},
      publisher = {{IEEE}},
      doi = {10.1109/SEC50012.2020.0003},
      pages = {1-3},
    } 
2019
  • A Microservice Store for Efficient Edge Offloading

    Julien Gedeon, Martin Wagner, Jens Heuschkel, Lin Wang, Max Mühlhäuser

    IEEE Global Communications Conference (GLOBECOM)

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    @inproceedings{gedeon2019-microservicestore,
      title={{A Microservice Store for Efficient Edge Offloading}},
      author={Gedeon, Julien and Wagner, Martin and Heuschkel, Jens and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle = {Proceedings of the 2019 IEEE Global Communications Conference (GLOBECOM)},
      year = {2019},
      publisher = {{IEEE}},
      doi = {10.1109/GLOBECOM38437.2019.9014114},
      pages = {1-6},
      url = {https://ieeexplore.ieee.org/document/9014114}
    } 
  • What the Fog? Edge Computing Revisited: Promises, Applications and Future Challenges

    Julien Gedeon, Florian Brandherm, Rolf Egert, Tim Grube, Max Mühlhäuser

    IEEE Access

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    @article{gedeon2019-whatthefog,
      title={{What the Fog? Edge Computing Revisited: Promises, Applications and Future Challenges}}, 
      author = {Julien Gedeon and Florian Brandherm and Rolf Egert and Tim Grube and Max M{\"{u}}hlh{\"{a}}user},
      journal = {IEEE Access},
      year = {2019},
      publisher = {{IEEE}},
      volume = {7},
      doi = {10.1109/ACCESS.2019.2948399},
      pages = {152847-152878},
      url = {https://ieeexplore.ieee.org/document/8877785}
    } 
  • VirtualStack: Green High Performance Protocol Processing Leveraging FPGAs

    Jens Heuschkel, Philipp Thomasberger, Julien Gedeon, Max Mühlhäuser

    IEEE Global Communications Conference (GLOBECOM)

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    @inproceedings{heuschkel2019-virtualstack,
      author = {Jens Heuschkel and Philipp Thomasberger and Julien Gedeon and Max M{\"{u}}hlh{\"{a}}user},
      title = {{VirtualStack: Green High Performance Network Protocol Processing Leveraging FPGAs}},
      booktitle = {Proceedings of the 2019 IEEE Global Communications Conference (GLOBECOM)},
      year = {2019},
      publisher = {{IEEE}},
      doi = {10.1109/GLOBECOM38437.2019.9013267},
      pages = {1-6},
      url = {https://ieeexplore.ieee.org/abstract/document/9013267}
    } 
  • Mastering Music Instruments through Technology in Solo Learning Sessions

    Karola Marky, Andreas Weiß, Julien Gedeon, Sebastian Günther

    Workshop on Interacting with Smart Objects (SmartObjects)

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    @inproceedings{marky-2019music,
      booktitle = {Proceedings of the 7th Workshop on Interacting with Smart Objects (SmartObjects '19) in conjunction with EICS '19},
      year = {2019},
      author = {Marky, Karola and Weiss, Andreas and Gedeon, Julien and G{\"u}nther, Sebastian},
      title = {Mastering Music Instruments through Technology in Solo Learning Sessions},
      url = {http://tubiblio.ulb.tu-darmstadt.de/113376/}
    } 
2018
  • From Cell Towers to Smart Street Lamps: Placing Cloudlets on Existing Urban Infrastructures

    Julien Gedeon, Michael Stein, Jeff Krisztinkovics, Patrick Felka, Katharina Keller, Christian Meurisch, Lin Wang, Max Mühlhäuser

    ACM/IEEE Symposium on Edge Computing

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    @inproceedings{gedeon2018-urbancloudlets,
      title={{From Cell Towers to Smart Street Lamps: Placing Cloudlets on Existing Urban Infrastructures}},
      author={Gedeon, Julien and Stein, Michael and Krisztinkovics, Jeff and Felka, Patrick and Keller, Katharina and Meurisch, Christian and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 2018 IEEE/ACM Symposium on Edge Computing (SEC)},
      pages={187--202},
      year={2018},
      organization={IEEE},
      doi = {10.1109/SEC.2018.00021},
      url = {https://ieeexplore.ieee.org/abstract/document/8567666}
    } 
  • vStore: A Context-Aware Framework for Mobile Micro-Storage at the Edge

    Julien Gedeon, Nicolás Himmelmann, Patrick Felka, Fabian Herrlich, Michael Stein, Max Mühlhäuser

    International Conference on Mobile Computing, Applications and Services (MobiCASE)

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    @inproceedings{gedeon2018-vStore,
      title={{vStore: A Context-Aware Framework for Mobile Micro-Storage at the Edge}},
      author={Gedeon, Julien and Himmelmann, Nicol{\'a}s and Felka, Patrick and Herrlich, Fabian and Stein, Michael and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the International Conference on Mobile Computing, Applications and Services (MobiCASE)},
      year={2018},
      pages = {165--182},
      doi = {10.1007/978-3-319-90740-6_10},
      url = {https://link.springer.com/chapter/10.1007%2F978-3-319-90740-6_10}
    } 
  • On Scalable In-Network Operator Placement

    Julien Gedeon, Michael Stein, Lin Wang, Max Mühlhäuser

    International Conference on Computer Communication and Networks (ICCCN)

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    @inproceedings{gedeon2018-operatorplacement,
      title={{On Scalable In-Network Operator Placement for Edge Computing}},
      author={Gedeon, Julien and Stein, Michael and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 27th International Conference on Computer Communication and Networks (ICCCN)},
      pages={1--9},
      year={2018},
      organization={IEEE},
      doi = {10.1109/ICCCN.2018.8487419},
      url = {https://ieeexplore.ieee.org/document/8487419}
    } 
  • MOERA: Mobility-agnostic Online Resource Allocation for Edge Computing

    Lin Wang, Lei Jiao, Jun Li, Julien Gedeon, Max Mühlhäuser

    IEEE Transactions on Mobile Computing

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    @article{wang2018-moera,
      title={{MOERA: Mobility-agnostic Online Resource Allocation for Edge Computing}},
      author={Wang, Lin and Jiao, Lei and Li, Jun and Gedeon, Julien and M{\"u}hlh{\"a}user, Max},
      journal={IEEE Transactions on Mobile Computing},
      year={2018},
      volume    = {18},
      number    = {8},
      pages     = {1843--1856},
      year      = {2019},
      doi = {10.1109/TMC.2018.2867520},
      url = {https://ieeexplore.ieee.org/document/8449107/}
    } 
  • A Multi-Cloudlet Infrastructure for Future Smart Cities: An Empirical Case Study

    Julien Gedeon, Jeff Krisztinkovics, Christian Meurisch, Michael Stein, Lin Wang, Max Mühlhäuser

    International Workshop on Edge Systems, Analytics and Networking (EdgeSys)

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    @inproceedings{gedeon2018-multicloudlet,
      title={{A Multi-Cloudlet Infrastructure for Future Smart Cities: An Empirical Study}},
      author={Gedeon, Julien and Krisztinkovics, Jeff and Meurisch, Christian and Stein, Michael and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 1st International Workshop on Edge Systems, Analytics and Networking (EdgeSys)},
      pages={19--24},
      year={2018},
      organization={ACM},
      doi = {10.1145/3213344.3213348},
      url = {https://dl.acm.org/doi/10.1145/3213344.3213348}
    } 
  • Fog Computing: Current Research and Future Challenges

    Julien Gedeon, Jens Heuschkel, Lin Wang, Max Mühlhäuser

    KuVS Fachgespräche Fog Computing

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    @inproceedings{gedeon2018-fogcomputing,
      title={{Fog Computing: Current Research and Future Challenges}},
      author={Gedeon, Julien and Heuschkel, Jens and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of 1.GI/ITG KuVS Fachgespr{\"a}che Fog Computing},
      year={2018},
      pages = {1--4},
    } 
2017
  • Temporal Coverage Analysis of Router-based Cloudlets Using Human Mobility Patterns

    Christian Meurisch, Julien Gedeon, Artur Gogel, The An Binh Nguyen, Fabian Kaup, Florian Kohnhäuser, Lars Baumgärtner , Milan Schmittner, Max Mühlhäuser

    IEEE Global Communications Conference (GLOBECOM)

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    @inproceedings{meurisch2017-temporalcoverage,
      title={{Temporal Coverage Analysis of Router-Based Cloudlets Using Human Mobility Patterns}},
      author={Meurisch, Christian and Gedeon, Julien and Gogel, Artur and Nguyen, The An Binh and Kaup, Fabian and Kohnh{\"a}user, Florian and Baumg{\"a}rtner, Lars and Schmittner, Milan and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the {IEEE} Global Communications Conference (GLOBECOM)},
      pages={1--6},
      year={2017},
      organization={IEEE},
      doi = {10.1109/GLOCOM.2017.8255035},
      url = {https://ieeexplore.ieee.org/abstract/document/8255035}
    } 
  • Router-based Brokering for Surrogate Discovery in Edge Computing

    Julien Gedeon, Christian Meurisch, Disha Bhat, Michael Stein, Lin Wang, Max Mühlhäuser

    International Workshop on Hot Topics in Planet-­Scale Mobile Computing and ​Online Social Networking (HotPOST)

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    @inproceedings{gedeon2017-routerbroker,
      title={{Router-based Brokering for Surrogate Discovery in Edge Computing}},
      author={Gedeon, Julien and Meurisch, Christian and Bhat, Disha and Stein, Michael and Wang, Lin and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the International Conference on Distributed Computing Systems Workshops (ICDCS Workshops)},
      year={2017},
      pages     = {145--150},
      doi = {10.1109/ICDCSW.2017.61},
      url = {https://ieeexplore.ieee.org/document/7979808}
    } 
  • Decision Support for Computational Offloading by Probing Unknown Services

    Christian Meurisch, Julien Gedeon, The An Binh Nguyen, Fabian Kaup, Max Mühlhäuser

    International Conference on Computer Communications and Networks (ICCCN)

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    @inproceedings{meurisch2017-offloading,
      title={{Decision Support for Computational Offloading by Probing Unknown Services}},
      author={Meurisch, Christian and Gedeon, Julien and Nguyen, The An Binh and Kaup, Fabian and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 26th International Conference on Computer Communication and Networks (ICCCN)},
      pages={1--9},
      year={2017},
      organization={IEEE},
      doi = {10.1109/ICCCN.2017.8038406},
      url = {https://ieeexplore.ieee.org/document/8038406/}
    } 
  • Upgrading Wireless Home Routers as Emergency Cloudlet and Secure DTN Communication Bridge

    Christian Meurisch, The An Binh Nguyen, Julien Gedeon, Florian Kohnhäuser, Milan Schmittner, Stefan Niemczyk, Stefan Wullkotte, Max Mühlhäuser

    International Conference on Computer Communications and Networks (ICCCN): Posters

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    @inproceedings{meurisch2017-DTN,
      title={{Upgrading Wireless Home Routers as Emergency Cloudlet and Secure DTN Communication Bridge}},
      author={Meurisch, Christian and Nguyen, The An Binh and Gedeon, Julien and Kohnh{\"a}user, Florian and Schmittner, Milan and Niemczyk, Stefan and Wullkotte, Stefan and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 26th International Conference on Computer Communication and Networks (ICCCN)},
      pages={1--2},
      year={2017},
      organization={IEEE},
      doi = {10.1109/ICCCN.2017.8038485},
      url = {https://ieeexplore.ieee.org/document/8038485}
    } 
  • Edge Computing via Dynamic In-Network Processing

    Julien Gedeon

    International Conference on Networked Systems (NetSys): PhD Forum

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    @inproceedings{gedeon2017-inp,
      title={{Edge Computing via Dynamic In-network Processing}},
      author={Gedeon, Julien},
      booktitle={International Conference on Networked Systems (Netsys'17): PhD Forum},
      year={2017},
      pages={1--2},
    } 
older
  • Understanding spatial and temporal coverage in participatory sensor networks

    Julien Gedeon, Immanuel Schweizer

    Local Computer Networks Conference Workshops (LCN Workshops 2015)

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    @inproceedings{gedeon2015-coverage,
      title={{Understanding Spatial and Temporal Coverage in Participatory Sensor Networks}},
      author={Gedeon, Julien and Schweizer, Immanuel},
      booktitle={Proceedings of the 40th {IEEE} Local Computer Networks Conference Workshops (LCN Workshops)},
      pages={699--707},
      year={2015},
      doi={10.1109/LCNW.2015.7365917},
      url = {https://ieeexplore.ieee.org/document/7365917/}
    } 
  • Noisemap - Multi-tier incentive mechanisms for participative urban sensing

    Immanuel Schweizer, Christian Meurisch, Julien Gedeon, Roman Bärtl, Max Mühlhäuser

    International Workshop on Sensing Applications on Mobile Phones (PhoneSense)

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    @inproceedings{schweizer2012-noisemap,
      title={{Noisemap: multi-tier incentive mechanisms for participative urban sensing}},
      author={Schweizer, Immanuel and Meurisch, Christian and Gedeon, Julien and B{\"a}rtl, Roman and M{\"u}hlh{\"a}user, Max},
      booktitle={Proceedings of the 3rd International Workshop on Sensing Applications on Mobile Phones},
      year={2012},
      organization={ACM},
      series = {PhoneSense '12},
      year = {2012},
      isbn = {978-1-4503-1778-8},
      pages = {9:1--9:5},
      url = {http://doi.acm.org/10.1145/2389148.2389157},
      doi = {10.1145/2389148.2389157},
    } 

Contact

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