Postdoc researcher
Juan Alberto Cabrera obtained his PhD (summa cum laude) on June 16th, 2022. He is currently working at the “Deutsche Telekom Chair of Communication Networks” at TU Dresden. He leads the Chair’s research group on semantic and goal-oriented communications. He is also in charge of teaching the course “Practical Implementations of Network Coding.”
Juan Cabrera’s research interests are semantic and goal-oriented communications, functional compression, message identification, common randomness generation, network coding, and in-network distributed storage and computing.
He was born in Caracas, Venezuela and studied at Simon Bolivar University, where he received his bachelor’s degree with honours (cum laude) in electronics engineering in 2013. He studied for one year in Prague, Czech Republic, during the bachelor’s program at the Czech Technical University in Prague (2011 – 2012). After finishing his bachelor’s, he moved to Denmark, receiving his master’s degree (2015) in wireless communications systems at Aalborg University.
Phone: +49 351 463-35377 Email: juan.cabrera@tu-dresden.de
Zimmermann, Sandra; Schwenteck, Paul; Cabrera, Juan A.; Nguyen, Giang T.; Fitzek, Frank H. P.
Grade to the Edge: How Many Unreliable Nodes Does It Take to Break a Content Delivery Network? Inproceedings
In: 2022 IEEE 23rd International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM) (WoWMoM 2022), Belfast, United Kingdom (Great Britain), 2022.
Abstract | BibTeX
@inproceedings{Zimm2206:Grade, title = {Grade to the Edge: How Many Unreliable Nodes Does It Take to Break a Content Delivery Network?}, author = {Sandra {Zimmermann} and Paul {Schwenteck} and Juan A. {Cabrera} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, year = {2022}, date = {2022-06-14}, urldate = {2022-06-14}, booktitle = {2022 IEEE 23rd International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM) (WoWMoM 2022)}, address = {Belfast, United Kingdom (Great Britain)}, abstract = {Delivering content from a network via a client-server architecture is expensive not only for content owners but also for network operators. Moving content closer to the end user is already used in Content Delivery Networks (CDN). Mobile Edge Cloud (MEC) enables us to shift the content even closer by using the storage of end users. But, due to the large media files, storage and transport costs for peers increase significantly. Network Coding can reduce these costs. However, peers in CDNs tend to be highly fluctuating and often need to be restored, making continuous availability of data at the network edge a problem. While for uncoded data, individual packets lost due to peer failures can be tracked to determine availability, the availability of coded data is currently distinguished only in two cases: either there are still enough linearly independent packets to decode the file, or there are not. However, we have found that the network's combined coded cache loses quality over time due to recovery. This quality loss, which we refer to as grade, can be measured by very cost-effective monitoring. If the grade falls below a certain limit, we can intervene in the network by performing a cache refresh to prevent data becoming unavailable preemptively. In this paper, we present the cases in which such monitoring is useful, how the grade is calculated, and when a cache refresh is necessary. The results show that we can reduce network traffic by up to 34 % with minimal storage costs through efficient monitoring.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
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Nguyen, Vu; Cabrera, Juan A.; Acevedo, Javier; Scheunert, Christian; Nguyen, Giang T.; Fitzek, Frank H. P.
A Good Horse Only Jumps as High as Needed: Multi-Field Fulcrum Codes for Heterogeneous Decoders Inproceedings
In: 2022 IEEE 21st Mediterranean Electrotechnical Conference (MELECON) (MELECON 2022), Palermo, Italy, 2022.
Links | BibTeX
@inproceedings{nguyen2022melecon, title = {A Good Horse Only Jumps as High as Needed: Multi-Field Fulcrum Codes for Heterogeneous Decoders}, author = {Vu {Nguyen} and Juan A. {Cabrera} and Javier {Acevedo} and Christian {Scheunert} and Giang T. {Nguyen} and Frank H. P. {Fitzek}}, doi = {10.1109/MELECON53508.2022.9843027}, year = {2022}, date = {2022-06-14}, urldate = {2022-06-14}, booktitle = {2022 IEEE 21st Mediterranean Electrotechnical Conference (MELECON) (MELECON 2022)}, address = {Palermo, Italy}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
von Lengerke, Caspar; Hefele, Alexander; Cabrera, Juan A.; Fitzek, Frank H. P.
Stopping the Data Flood: Post-Shannon Traffic Reduction in Digital-Twins Applications Inproceedings
In: NOMS 2022-2022, pp. 1-5, 2022, ISSN: 2374-9709.
Abstract | Links | BibTeX
@inproceedings{lengerke2022, title = {Stopping the Data Flood: Post-Shannon Traffic Reduction in Digital-Twins Applications}, author = {Caspar {von Lengerke} and Alexander {Hefele} and Juan A. {Cabrera} and Frank H. P. {Fitzek}}, doi = {10.1109/NOMS54207.2022.9789759}, issn = {2374-9709}, year = {2022}, date = {2022-04-25}, urldate = {2022-04-25}, booktitle = {NOMS 2022-2022}, pages = {1-5}, abstract = {Digital Twin (DT) implementations can reduce latency drastically in future communication systems for steering and control of cyber-physical systems (CPS). When the CPS and its DT periodically exchange information to repair possible desynchronisations between the two systems, this can lead to large data traffic flooding the networks. This work proposes a goal-oriented communication approach based on message identification (ID), which only sends repair data when necessary, but adds control traffic and a probability of not repairing some desynchronisations between the two systems. We compare optimal ID codes and a hash function for detection whether desynchronisation correction is necessary. Our method can reduce the traffic to within 0.3 % of its optimal value while repairing 99.97 % of all desynchronisations for 4 kbit of data and grows even better for larger data.}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Rezwan, Sifat; Cabrera, Juan A.; Fitzek, Frank H. P.
Network Functional Compression for Control Applications Inproceedings
In: International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), Male, Maldives, 2022, (äccepted for publication").
BibTeX
@inproceedings{rezwan2022networkfc, title = {Network Functional Compression for Control Applications}, author = {Sifat {Rezwan} and Juan A. {Cabrera} and Frank H. P. {Fitzek}}, year = {2022}, date = {2022-01-01}, urldate = {2022-01-01}, booktitle = {International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME)}, address = {Male, Maldives}, note = {\"{a}ccepted for publication"}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Cabrera, Juan A.; Boche, Holger; Deppe, Christian; Schaefer, Rafael F.; Scheunert, Christian; Fitzek, Frank H. P.
6G and the Post-Shannon Theory Book Chapter
In: Bertin, Emmanuel; Crespi, Noël; Magedanz, Thomas (Ed.): Shaping Future 6G Networks: Needs, Impacts and Technologies, Wiley-IEEE, 2021, ISBN: 978-1119765516.
@inbook{cabreraPostShannon, title = {6G and the Post-Shannon Theory}, author = {Juan A. {Cabrera} and Holger {Boche} and Christian {Deppe} and Rafael F. {Schaefer} and Christian {Scheunert} and Frank H. P. {Fitzek} }, editor = {Emmanuel {Bertin} and No\"{e}l {Crespi} and Thomas {Magedanz}}, isbn = {978-1119765516}, year = {2021}, date = {2021-11-01}, urldate = {2021-11-01}, booktitle = {Shaping Future 6G Networks: Needs, Impacts and Technologies}, publisher = {Wiley-IEEE}, keywords = {}, pubstate = {published}, tppubtype = {inbook} }
Tasdemir, Elif; Cabrera, Juan A.; Gabriel, Frank; You, Dongho; Fitzek, Frank H. P.
Sliding Window RLNC on Multi-Hop Communication for Low Latency Inproceedings
In: 2021 IEEE 93rd Vehicular Technology Conference: VTC2021-Spring, Helsinki, Finland, 2021.
@inproceedings{Tasd2021:Sliding, title = {Sliding Window RLNC on Multi-Hop Communication for Low Latency}, author = {Elif {Tasdemir} and Juan A. {Cabrera} and Frank {Gabriel} and Dongho {You} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-04-25}, urldate = {2021-04-25}, booktitle = {2021 IEEE 93rd Vehicular Technology Conference: VTC2021-Spring}, address = {Helsinki, Finland}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Cabrera, Juan A.; Steppert, Raphael; Gabriel, Frank; Fitzek, Frank H. P.
Do not Waste the Waste: Packetized Rateless Algebraic Consistency for IEEE 802.11 Networks Inproceedings
In: 2021 IEEE Wireless Communications and Networking Conference (WCNC), 2021.
@inproceedings{9120818, title = {Do not Waste the Waste: Packetized Rateless Algebraic Consistency for IEEE 802.11 Networks}, author = {Juan A. {Cabrera} and Raphael {Steppert} and Frank {Gabriel} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-03-29}, urldate = {2021-03-29}, booktitle = {2021 IEEE Wireless Communications and Networking Conference (WCNC)}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} }
Fitzek, Frank H. P.; Steinbach, Eckehard; Cabrera, Juan A.; Latzko, Vincent; Zhang, Jiajing; Lu, Yun; Sefunç, Merve; Scheunert, Christian; Schilling, René; Traßl, Andreas; Sanchez, Andrés Villamil M.; Franchi, Norman; Fettweis, Gerhard P.
Communications and control Book Chapter
In: Fitzek, Frank H. P.; Li, Shu-Chen; Speidel, Stefanie; Strufe, Thorsten; Simsek, Meryem; Reisslein, Martin (Ed.): Tactile Internet with Human-in-the-Loop, Chapter 11, pp. 255-281, Academic Press, 2021, (later on under: https://ceti.one/book).
@inbook{CeTIBook-2020-Chap11, title = {Communications and control}, author = {Frank H. P. {Fitzek} and Eckehard {Steinbach} and Juan A. {Cabrera} and Vincent {Latzko} and Jiajing {Zhang} and Yun {Lu} and Merve {Sefun\c{c}} and Christian {Scheunert} and Ren\'{e} {Schilling} and Andreas {Tra\ssl} and Andr\'{e}s Villamil M. {Sanchez} and Norman {Franchi} and Gerhard P. {Fettweis}}, editor = {Frank H. P. {Fitzek} and Shu-Chen {Li} and Stefanie {Speidel} and Thorsten {Strufe} and Meryem {Simsek} and Martin {Reisslein}}, year = {2021}, date = {2021-01-01}, urldate = {2021-01-01}, booktitle = {Tactile Internet with Human-in-the-Loop}, pages = {255-281}, publisher = {Academic Press}, chapter = {11}, note = {later on under: https://ceti.one/book}, keywords = {}, pubstate = {published}, tppubtype = {inbook} }
Cabrera, Juan A.; Fitzek, Frank H. P.; Hanisch, Simon; Itting, Sebastian A. W.; Zhang, Jiajing; Zimmermann, Sandra; Strufe, Thorsten; Simsek, Meryem; Fetzer, Christof W.
Intelligent networks Book Chapter
In: Fitzek, Frank H. P.; Li, Shu-Chen; Speidel, Stefanie; Strufe, Thorsten; Simsek, Meryem; Reisslein, Martin (Ed.): Tactile Internet with Human-in-the-Loop, Chapter 6, pp. 135-154, Academic Press, 2021, (later on under: https://ceti.one/book).
@inbook{CeTIBook-2020-Chap06, title = {Intelligent networks}, author = {Juan A. {Cabrera} and Frank H. P. {Fitzek} and Simon {Hanisch} and Sebastian A. W. {Itting} and Jiajing {Zhang} and Sandra {Zimmermann} and Thorsten {Strufe} and Meryem {Simsek} and Christof W. {Fetzer}}, editor = {Frank H. P. {Fitzek} and Shu-Chen {Li} and Stefanie {Speidel} and Thorsten {Strufe} and Meryem {Simsek} and Martin {Reisslein}}, year = {2021}, date = {2021-01-01}, urldate = {2021-01-01}, booktitle = {Tactile Internet with Human-in-the-Loop}, pages = {135-154}, publisher = {Academic Press}, chapter = {6}, note = {later on under: https://ceti.one/book}, keywords = {}, pubstate = {published}, tppubtype = {inbook} }
Xiang, Zuo; Pandi, Sreekrishna; Cabrera, Juan A.; Granelli, Fabrizio; Seeling, Patrick; Fitzek, Frank H. P.
An Open Source Testbed for Virtualized Communication Networks Journal Article
In: IEEE Communications Magazine, pp. 1–8, 2021, ((Accepted, 2020)).
@article{xiang2020comnetsemu, title = {An Open Source Testbed for Virtualized Communication Networks}, author = {Zuo {Xiang} and Sreekrishna {Pandi} and Juan A. {Cabrera} and Fabrizio {Granelli} and Patrick {Seeling} and Frank H. P. {Fitzek}}, year = {2021}, date = {2021-01-01}, urldate = {2021-01-01}, journal = {IEEE Communications Magazine}, pages = {1--8}, note = {(Accepted, 2020)}, keywords = {}, pubstate = {published}, tppubtype = {article} }