BU Gewu

PhD student at Sorbonne University
Team : NPA
https://lip6.fr/Gewu.Bu

Supervision : Maria POTOP-BUTUCARU

Co-supervision : BAYNAT Bruno

Reliability, security and privacy in WBAN

WBAN is a network system dedicated to the communications between sensors devices located on the human body. WBAN can collect and process physiological data of the human body which can be used for various medical applications. Challenges in the WBANs area ranges from the design of reliable communication protocols when facing the human body mobility to the security and privacy protection during the data transmission.
Our research starts with implementing different communication strategies and a realistic human mobility. We provide massive comparative simulation results. According to the analysis of these results, we provide the tree-based convergecast strategy and the ZKP-based authentication mechanism, to improve WBAN in terms of the reliability, security and privacy.
A Markovian model for broadcast communication is also proposed to evaluate WBAN performance. Our theoretical model is compared and validated with the massive simulation results. Another abstract application layer reliability mechanism is also introduced and implemented to improve the reliability and the transmission efficiency of WBAN.
For the Inter-WBANs communication, we adopt recent distributed ledger system dedicated to the Internet of Things area: IOTA. We studied the core data structure of IOTA and proposed solutions for the potential defects of the confirmation equity and the energy efficiency.

Defence : 12/11/2019

Jury members :

M. André Luc Beylot, Professeur, IRIT/ENSEEIHT [Rapporteur]
Mme Nathalie Mitton, Directrice de Recherche, Inria Lille [Rapporteur]
Mme Maria Potop-Butucaru, Professeur, Sorbonne Université
M. Bruno Baynat, Maîtres de Conférences, Sorbonne Université
M. Bertrand Ducourthial, Professeur, l’Université de Technologie de Compiègne
M. Fabien Koskas, Professeur des Universités-Praticien Hospitalier, Sorbonne Université
M. Thomas Noel, Professeur, Université Strasbourg
M. Hervé Rivano, Professeur, INSA Lyon

Departure date : 10/01/2019

2017-2022 Publications

2022
- H. Nazim Mamache, G. Mazué, O. Rashid, G. Bu, M. Potop‑Butucaru : “Evaluation des performances du consensus IOTA sous des hypothèses d’implémentation réalistes”, AlgoTel 2022 - 24^es Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, Saint-Rémy-Lès-Chevreuse, France (2022)
2021
- G. Bu, M. Potop‑Butucaru, M. Rabie : “Wireless Broadcast with Short Labels”, 8^th International Conference on Networked Systems, NETYS 2020, vol. 12129, Lecture Notes in Computer Science, Marakech, Morocco, pp. 146-169, (Springer International Publishing), (ISBN: 978-3-030-67087-0) (2021)
2020
- G. Bu, M. Potop‑Butucaru, M. Rabie : “Diffusion dans les réseaux sans fil en utilisant des filtres à mémoire constante”, ALGOTEL 2020 – 22^es Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, Lyon, France (2020)
- G. Bu, W. Hana, M. Potop‑Butucaru : “E-IOTA: an efficient and fast metamorphism for IOTA”, 2020 2^nd Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS), Paris, France, pp. 9-16, (IEEE), (ISBN: 978-1-7281-7091-6) (2020)
- G. Bu, R. Haouara, Th. Nguyen, M. Potop‑Butucaru : “Cross hyperledger fabric transactions”, Proceedings of the 3^rd Workshop on Cryptocurrencies and Blockchains for Distributed Systems, CryBlock '20, London, United Kingdom, pp. 35-40, (Association for Computing Machinery), (ISBN: 9781450380799) (2020)
- G. Bu, Z. Lotker, M. Potop‑Butucaru, M. Rabie : “Lower and upper bounds for deterministic convergecast with labeling schemes”, (2020)
- G. Bu, M. Potop‑Butucaru, M. Rabie : “Wireless Broadcast with short labelling”, (2020)
2019
- G. Bu : “Fiabilité, sécurité et vie privée dans les WBAN”, thesis, phd defence 12/11/2019, supervision Potop-butucaru, Maria, co-supervision : Baynat, Bruno (2019)
- B. Baynat, G. Bu, M. Potop‑Butucaru : “Markovian Model for Broadcast in Wireless Body Area Networks”, The 17^th ACM International Symposium on Mobility Management and Wireless Access (MobiWAC 2019), Miami, United States, pp. 63-70, (ACM) (2019)
- G. Bu, Th. NGUYEN, M. Potop Butucaru, K. Thai : “HyperPubSub: Blockchain Based Publish/Subscribe”, 2019 38^th Symposium on Reliable Distributed Systems (SRDS), Lyon, France, pp. 366-3662, (IEEE), (ISBN: 978-1-7281-4222-7) (2019)
- G. Bu, Ö. Gürcan, M. Potop‑Butucaru : “G-IOTA: Fair and confidence aware tangle”, INFOCOM Workshops, Paris, France, pp. 644-649, (IEEE) (2019)
- G. Bu, Th. NGUYEN, M. Potop‑Butucaru, K. Thai : “HyperPubSub: Blockchain based Publish/Subscribe”, (2019)
- G. Bu, W. Hana, M. Potop‑Butucaru : “Metamorphic IOTA”, (2019)
- G. Bu, Ö. Gürcan, M. Potop‑Butucaru : “G-IOTA: Fair and confidence aware tangle”, (2019)
2018
- G. Bu, M. Potop‑Butucaru : “FIFO Order reliable convergecast in WBAN”, Computer Networks, vol. 146, pp. 200-2016, (Elsevier) (2018)
- G. Bu, M. Potop‑Butucaru : “BAN-GZKP: Optimal Zero Knowledge Proof based Scheme for Wireless Body Area Networks”, Ad Hoc Networks, vol. 77, pp. 28-41, (Elsevier) (2018)
- G. Bu, M. Potop‑Butucaru : “Schéma Optimal basé sur la Preuve à Divulgation Nulle de Connaissance pour les Réseaux Wireless Body Area Networks (WBAN)”, ALGOTEL 2018 - 20^es Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, Roscoff, France (2018)
2017
- G. Bu, M. Potop‑Butucaru : “BAN-GZKP: Optimal Zero Knowledge Proof based Scheme for Wireless Body Area Networks”, (2017)
- G. Bu, M. Potop‑Butucaru : “Total Order Reliable Convergecast in WBAN”, ICDCN 2017 - 18^th International Conference on Distributed Computing and Networking, Hyderabad, India, (ACM) (2017)