Allyson Sim

Dr. Allyson Sim


allyson sim team pic mg


Telephone:+49 6151 16-25473

Fax:+49 6151 16-25471

Office: S2|20 – 201

Secure Mobile Networking Lab
Pankratiusstraße 2
64289 Darmstadt.

Research Interests

Millimeter-wave communication, Medium access control, Multicast scheduling, Multicast beamforming, 5G technology, IEEE802.11ad WLAN.

Open Theses

  • 2016/11/01

    60 GHz Millimeter Wave Medium Access Control

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    Master Thesis

    - The state-of-the art of the channel access sharing in millimeter-wave and non-millimeter wave communications.

    - Define the challenges that are important to have an optimal sharing between medium access.

  • 2016/10/18

    Concurrent transmission D2D millimeter-wave

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    Master Thesis

    Directional transmission used for millimeter wave communication arises many challenges. However, extreme spatial sharing of the millimeter wave spectrum boost the throughput per area by a significant amount. The increase in per area throughput is nevertheless still an open research!

Ongoing Theses

Currently no items available.

Supervised Theses

Currently no items available.


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Group by: Date | Item type | No grouping
Jump to: 2020 | 2019 | 2018 | 2017 | 2016
Number of items: 12.


Abanto-Leon, Luis F. ; Bäuml, Andreas ; Sim, Gek Hong ; Hollick, Matthias ; Asadi, Arash (2020):
Stay Connected, Leave no Trace: Enhancing Security and Privacy in WiFi via Obfuscating Radiometric Fingerprints.
In: Proceedings of the ACM on Measurement and Analysis of Computing Systems, 4 (3), ACM, ISSN 2476-1249,
DOI: 10.1145/3428329,

Sim, Gek Hong ; Mousavi, Mahdi ; Wang, Lin ; Klein, Anja ; Hollick, Matthias (2020):
Joint Relaying and Spatial Sharing Multicast Scheduling for mmWave Networks.
In: Proceedings : 21st IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, S. 127-136,
IEEE, 21st IEEE International Symposium on World of Wireless, Mobile and Multimedia Networks (WoWMoM 2020), virtual Conference, 31.08.-03.09.2020, ISBN 978-1-7281-7374-0,
DOI: 10.1109/WoWMoM49955.2020.00033,
[Conference item]


Abanto-Leon, Luis F. ; Hollick, Matthias ; Sim, Gek Hong (2019):
Hybrid Precoding for Multi-Group Multicasting in mmWave Systems.
S. 1-7, 2019 IEEE Global Communications Conference (GLOBECOM), Waikoloa, HI, USA, 9-13 Dec. 2019, e-ISSN 2576-6813,
[Conference item]


Sim, Gek Hong ; Klos, Sabrina ; Asadi, Arash ; Klein, Anja ; Hollick, Matthias (2018):
An Online Context-Aware Machine Learning Algorithm for 5G mmWave Vehicular Communications.
In: IEEE/ACM Transactions on Networking, 26 (6), S. 2487-2500. ISSN 1063-6692,
DOI: 10.1109/TNET.2018.2869244,

Asadi, Arash ; Müller, Sabrina ; Sim, Gek Hong ; Klein, Anja ; Hollick, Matthias (2018):
FML: Fast Machine Learning for 5G mmWave Vehicular Communications.
S. 1961-1969, INFOCOM 2018 - IEEE Conference on Computer Communications, Honolulu, Hawaii, USA, 15.-19.4.2018, DOI: 10.1109/INFOCOM.2018.8485876,
[Conference item]


Sim, Gek Hong ; Asadi, Arash ; Loch, Adrian ; Hollick, Matthias ; Widmer, Jörg (2017):
mm-Broker: Managing Directionality and Mobility Issues of Millimeter-Wave via D2D Communication.
In: International Conference on Communication Systems & Networks,
IEEE, [Conference item]

Loch, Adrian ; Asadi, Arash ; Sim, Gek Hong ; Widmer, Jörg ; Hollick, Matthias (2017):
mm-Wave on Wheels: Practical 60 GHz Vehicular Communication Without Beam Training.
In: International Conference on Communication Systems & Networks,
IEEE, [Conference item]


Sim, Gek Hong ; Loch, Adrian ; Asadi, Arash ; Mancuso, Vincenzo ; Widmer, Jörg (2016):
5G Millimeter-Wave and D2D Symbiosis: 60 GHz for Proximity-based Services.
In: IEEE Wireless Communication Magazine, [Article]

Sim, Gek Hong ; Nitsche, Thomas ; Widmer, Jörg (2016):
Addressing MAC Layer Inefficiency and Deafness of IEEE802.11ad Millimeter Wave Networks using a Multi-Band Approach.
In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC),
[Conference item]

Sim, Gek Hong ; Li, Rui ; Cano, Cristina ; Patras, Paul ; Malone, David ; Widmer, Jörg (2016):
Learning from Experience: Efficient Decentralized Scheduling for 60GHz Mesh Networks.
In: The 17th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2016),
[Conference item]

Loch, Adrian ; Sim, Gek Hong (2016):
Millimeter-Wave Blind Spots: Mitigating Deafness Collisions Using Frame Aggregation.
In: Millimeter-wave Networking Workshop 2016, in conjunction with the 35th IEEE International Conference on Computer Communications (IEEE INFOCOM 2016), [Article]

Sim, Gek Hong ; Widmer, Jörg (2016):
Finite Horizon Opportunistic Multicast Beamforming.
In: IEEE Transactions on Wireless Communications, [Article]

This list was generated on Mon May 17 07:19:23 2021 CEST.

Short Biography

I joined SEEMOO lab at Technical University of Darmstadt in April 2016 as a PostDoc working with Prof. Matthias Hollick. I received my PhD in Telematics Engineering from University Carlos III of Madrid (UC3M) in March 2016 with the highest distinction. I also obtained a master's degree in Telematics Engineering from UC3M in October 2012, and another master's degree in Telecommunication from Multimedia University, Malaysia in June 2011