Head : Jean-Luc SCHARBARG

netwoRks, Mobiles, Embedded, wireleSs, Satellites Team

The convergence of communication networks, especially through the opening of specific systems, requires the control of their performance for sizing and integration purposes. The originality of our approach comes from the exploitation of the specificities of the different types of networks, for example through cross-layer solutions, rather than a standardization that would lead to inefficient solutions. Our activities focus on the architecture and performance of networks with embedded application networks, satellite networks and wireless networks as preferred application areas. The methods used combine mathematical solutions (queues, network computing, …), simulations and experiments.

Research topics

Modeling and performances (Urtzi Ayesta)

We develop mathematical methods and software tools for the performance evaluation, optimization and control of communication networks and distributed systems. The ultimate goal is to contribute to the enhancement of communication networks (protocols, architectures, applications) with particular emphasis on the Internet, IoT, embedded networks and wireless systems. Our main theoretical tool will be stochastic modelling, analysis and optimization. Stochastic modelling and analysis has been a popular method for analyzing the behavior of algorithms in complex networks. Indeed, randomness is inherent in the network. For example, the behavior of Internet users – when they connect, what they download, when they disconnect – is random. Moreover, changes in topology either due to user mobility or due to faults are random as well. In the context of embedded systems, we resort to deterministic or stochastic worst-case analyses in order to obtain tight bounds on the delay performance. Furthermore, optimization techniques provide the fundamental ideas for efficient resource allocation in such networks.

Wireless Sensor Network & IoT (Adrien van den Bossche)

A powerfull network of connected objects necessarily requires an efficient Data Link layer that is adapted to the characteristics of the underlying immaterial mediums (limited range, high BER, high connectivity variability, complex detection of collision, existence of several channels, more or less important links radio…), and secondly the needs of applications that use this means of communication (guaranteed speed, reduced latency, long life of autonomous nodes and mobile, …). Our experience of more than twenty years in the low layers (1-2-3) of wireless networks has naturally led us to contribute in recent years to the design of new layer #2 protocols responding to many locks related to networks of wireless sensors, for various applications in the fields of monitoring industrial plants, and connected objects for the assistance and assistance. In particular, we have designed MAC layers that meet the two antinomic criteria of low energy consumption and compliance with high time constraints. Combined with these powerful mono or multi-channel access methods, we have also proposed protocols for the localozation of autonomous wireless mobile nodes that can work in indoor environments. The common denominator of our contributions is the adequacy of these protocols to immaterial layers on which we do not contribute directly, but that we apprehend the best possible in a step where the cross-layering 1-2 is advantageously used. We focus on designing Layer #2 least power consuming protocols, thus maximizing the sleep periods of autonomous nodes, which leads us to develop meeting solutions based on strong MAC synchronization of communicating entities. In terms of performance evaluation, there is a lot of room for real prototyping and pragmatic evaluation of protocols through the use of testbeds. The team has been involved in the development of several rapid protocol prototyping tools for wireless sensor networks and is now very more focused on developing the OpenWiNo tool for protocol implementation, then emulation and testing of nodes in controlled and real environments. Work is also carried out on the design of hybrid network architectures of connected objects integrating links and various technologies (satellite, WPAN, WLAN, WMAN, WWAN …).

5G (Gentian Jakllari)

From HD streaming on portable devices to the Internet of Things and smart cities, the global demand for wireless capacity is increasing exponentially, putting a major strain on the wireless networking infrastructure. In the framework of the fifth generation of the cellular network technology (5G), at RMESS we are working on innovative networks and architectures capable of meeting the wireless capacity demands of the next 10 years.

Benefitting from the size of RMESS, we combine stochastic modeling and analysis, optimization, simulation, prototyping, experimentation, with our expertise in diverse networking architectures – cellular, mesh, sensor, satellite networks – and cross-layer design, to deliver solutions that can provide Gbps capacities to people and things. Recent notable results include theoretical models and hardware prototypes for networks incorporating the latest advances at the physical layers, such as cognitive radios and physical-layer network coding, new routing approaches for wireless mesh networks, and new architectures for carrying large amount of data traffic by leveraging V2V communications. Our researched is published in top conferences (IEEE Infocom, ACM MSWiM, IEEE LCN, etc), journals (IEEE/ACM ToN, COMNET, IEEE TWC, etc), and is supported by a mix of ANR financing, industrial as well as regional grants.

Satellite networks (Riadh Dhaou)

In recent years, satellite networks have evolved from the first geostationary satellite networks, used for broadcasting, to future Low Earth Orbit (LEO) constellations or very high-throughput satellites. Through these evolutions, the question of the harmonious operation between satellite and terrestrial components has been posed recurrently. The RMESS team is looking for solutions adapted to the use of satellite links for communications whether in the framework of current (mainly IP based) or future network architectures such as software-defined networks (SDN), content-based networks (CDN, ICN), or the 5th generation of mobile networks (5G) integrating the IoT (Internet of Things) context . Works, carried out through studies and partly through Ph. D. theses, are now moving towards the implementation of network techniques less and less specific to the satellite world. One of the active (and historical) pillars of the team activity in the network domain is unquestionably that of resource management. It is divided into two traditional axes: access methods and scheduling. Thus, work related to the resource management and the quality of service always focus on the access layer according to the evolution of the physical layers. Terrestrial transport protocols are significantly degraded in a satellite environment because of their strong dependence on round-trip time. The RMESS team has been working in this field for several years, and its expertise in this field is strong and covers skills from levels close to the physical layer up to service levels. Besides, the advent of multihoming solutions adapted to terrestrial-satellite hybrid scenarios opens the way to the experimentation of innovative solutions for load-balancing or dynamic routing of content that are placed in a context of network hybridization. The use of several links is indeed a common practice today. The methods used in our research involve stochastic modeling and analysis, optimization, simulation, prototyping, and experimentation. The results of our research are patented or published in high-level conferences and journals and are supported by national and European funding with strong industrial involvement.

Embedded networks and Cyber Physical Systems (Katia Jaffres-Runser)

The team has developed a strong expertise on the design, engineering and performance evaluation of embedded networks and protocols. One of the very specific expertise developed in the team is the design of certifiable embedded networks in the context of real-time systems. Their long-lasting collaboration with the avionics industry of Toulouse made the team develop the algorithms used to certify an AFDX network, the now de-facto networking standard for civil avionics. Certification algorithms together with the specification of AFDX offered the avionics industry a by-design certified embedded network. Mathematical tools such as network calculus, trajectory approach or model checking are leveraged for wired embedded network certification. This research has been driven by several research projects in the last two decades, nurturing a dozen of PhDs. Currently, they are investigating the design of new certifiable protocols for embedded real-time machine-to-machine communications, with a specific focus on the new time sensitive networking technology. Another more recent and core interest of this group is the certifiable design of wireless protocols for cyber physical systems. Machine to machine communications have to ensure reliability but timeliness on top of that in this wireless context. For wireless systems, stochastic bounds on communication delays have to be derived for certification. First results have led to the definition of models and algorithms for distributed medium access protocols and for centralized deterministic medium access protocols. For the latter types of protocols, efforts on time synchronization protocol certification are currently going on. Results on certifiable wireless protocols will serve several operational contexts : embedded networking, cyber-physical systems or industry 4.0.


performance evaluation
modelling and simulation
system sizing
embedded networks
satellite and mobile networks

personnel of the team

Permanent members
Non-permanent members

publications of the team

International journals articles
National journals articles
Special issues of journal
International conferences articles
Conferences articles without published proceedings
Books Books parts
Thesis and HDR
  • Kuljaree Tantayakul

    Mobility management in new internet architectures

    Master’s Thesis, Institut National Polytechnique de Toulouse, September 2018.


  • Thomas Ricosset

    Signature électronique basée sur les réseaux euclidiens et échantillonnage selon une loi normale discrète

    Master’s Thesis, Institut National Polytechnique de Toulouse, November 2018.


  • Hugo Chelle

    Contrôle de charge des réseaux IoT: d’une étude théorique à une implantation réelle

    Master’s Thesis, Institut National Polytechnique de Toulouse, December 2018.


  • Abdelaziz Ahmed Nacer

    Analyse et dimensionnement de réseaux hétérogènes embarqués

    Master’s Thesis, Institut National Polytechnique de Toulouse, March 2018.


  • Samer El Zant

    Google matrix analysis of Wikipedia networks

    Master’s Thesis, Institut National Polytechnique de Toulouse, July 2018.

    Abstract URL : http://oatao.univ-toulouse.fr/23521/

  • Adrien Van Den Bossche

    Contribution aux Protocoles MAC et à la Localisation des nœuds dans les Réseaux de Capteurs Sans Fil et l’Internet des Objets

    HDR, Institut National Polytechnique de Toulouse, June 2018.


  • Sami Mnasri

    Contributions to the optimized deployment of connected sensors on the Internet of Things collection networks

    Master’s Thesis, Université de Toulouse-le-Mirail, June 2018.

    URL : https://portail.irit.fr/partage/data/public/a976e9596509e3d2.php

  • Raphaël Naves

    Apport de la gestion des interférences aux réseaux sans-fil multi-sauts – Le cas du Physical-Layer Network Coding

    Master’s Thesis, Institut National Polytechnique de Toulouse, November 2018.


  • Yoann Couble

    Optimisation de la gestion des ressources de la voie retour

    Master’s Thesis, Institut National Polytechnique de Toulouse, September 2018.


  • Elie Bouttier

    Livraison de contenus sur un réseau hybride satellite/terrestre

    Master’s Thesis, Institut National Polytechnique de Toulouse, 2018.



contrats of the team

AcronymeTitreResp. scDébut – fin
RACON anr Efficient resource allocation in congested networks Urtzi AYESTA
2015 – 2020
CITADEL anr Un cadre multi-technologique pour relever le défi des données mobiles massives (JCJC) Gentian JAKLLARI
2017 – 2022
POUCET anr Positionnement Urbain Connecté en Environnement Terrestre Thierry VAL
2018 – 2021
[Contract completed]
Mise en cache mobile s’adaptant au contexte pour la mise en réseau centrée sur le contenu Katia JAFFRES-RUNSER
2013 – 2017
[Contract completed]
autre Safety and time critical middleware for future modular avionics platform Emmanuel LAVINAL

2007 – 2010
AcronymeTitreResp. scDébut – fin
Cybersec4Europe auropa Cyber Security Network of Competence Centres for Europe Afonso FERREIRA
2019 – 2022
[Contract completed]
Feel@Home Béatrice PAILLASSA
2009 – 2010
AcronymeTitreResp. scDébut – fin
GoIA Matrice de Google pour l’Intelligence Artificielle – GoIA Katia JAFFRES-RUNSER
2019 – 2024
Tuesday 9 June 2020, 15h00
Resource allocation with observable and unobservable environments
Santiago Guillermo DURAN – Team RMESS, IRIT INP-ENSEEIHT, En visioconférence
Friday 5 June 2020, 8h45
Real-time performance analysis of a QoS based industrial embedded network
Aakash SONI – Team RMESS, IRIT INP-ENSEEIHT, En visioconférence
Friday 29 May 2020, 8h45
Vers la convergence des réseaux dans l’avionique
Oana Andreea HOTESCU – Team RMESS, IRIT INP-ENSEEIHT, En visioconférence
Thursday 5 December 2019, 10h00
Surveillance de cibles mobiles fondée sur un réseau de drones
Mouna ELLOUMI – Team SC, Team RMESS, IRIT INP-ENSEEIHT, Salle des thèses
Tuesday 1 October 2019, 10h00
Déploiement temporaire d’une infrastructure de communication à base de drones
Dorin Marian RAUTU – Team RMESS, IRIT INP-ENSEEIHT, Salle des thèses
Tuesday 18 December 2018, 10h30
Contrôle de charge des réseaux IoT : d’une étude théorique à une implantation réelle
Hugo CHELLE – Team RMESS – IRIT INP-ENSEEIHT, Salle des thèses
Monday 19 November 2018, 13h30
Apport de la gestion des interférences aux réseaux sans-fil multi-sauts
Raphaël NAVES – Team RMESS – IRIT INP-ENSEEIHT, Salle des thèses
Monday 12 November 2018, 14h00
Signature électronique basée sur les réseaux euclidiens et échantillonnage selon une loi normale discrète
Thomas RICOSSET – Team RMESS – IRIT INP-ENSEEIHT, Salle des thèses
Monday 17 September 2018, 14h30
Mobility Management in New Internet Architectures
Kuljaree TANTAYAKUL – Team RMESS – IRIT INP-ENSEEIHT, Salle des thèses
Monday 3 September 2018, 10h30
Optimisation de la gestion des ressources sur la voie retour
Yoann COUBLE – Team RMESS – IRIT INP-ENSEEIHT, Salle des thèses
Wednesday 13 November 2019 – Friday 15 November 2019
Cybersecurity for Europe 2019
Hôtel de Région, Toulouse
#congres Know more
Wednesday 6 November 2019 – Friday 8 November 2019
RTNS’2019 : 27th International Conference on Real-Time Networks and Systems
#congres Know more
Monday 3 June 2019 – Friday 7 June 2019
AlgoTel – CoRes 2019 : algorithmique et optimisation appliquée aux problèmes des télécommunications
Saint-Laurent-de-la-Cabrerisse (près de Narbonne)
#congres Know more
Wednesday 5 December 2018 – Friday 7 December 2018
36th International Symposium on Computer Performance, Modeling, Measurements and Evaluation 2018
#congres Know more
Monday 3 December 2018 – Tuesday 4 December 2018
YEQT 2018 : Young European Queueing Theorists
#congres Know more
Wednesday 26 September 2018 – Friday 28 September 2018
PEMWN2018 : The 7th IFIP/IEEE International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks
IUT de Blagnac
#congres Know more
Wednesday 14 June 2017 – Friday 16 June 2017
12th IEEE International Symposium on Industrial Embedded Systems
#congres Know more
Monday 18 July 2016 – Wednesday 20 July 2016
European Conference on Queueing Theory
INP-ENSEEIHT, Auditorium
#congres Know more
Tuesday 5 July 2016 – Friday 8 July 2016
Euromicro Conference on Real-Time Systems
INP-ENSEEIHT, Auditorium
#congres Know more
Wednesday 20 May 2015 – Friday 22 May 2015
Networking 2015
#congres Know more
Monday 9 July 2018, 10h00 – 11h30
The Maths behind Secrets
Pino CABALLERO-GIL – University of La Laguna (ULL) (Espagne) UT3 Paul Sabatier, IRIT, Salle des Thèses
Monday 25 June 2018, 15h30 – 17h00
Basics of Cryptology
Pino CABALLERO-GIL – University of La Laguna (ULL) (Espagne) UT3 Paul Sabatier, IRIT, Salle des Thèses
Wednesday 6 June 2018, 10h30
Contribution aux protocoles MAC et à la localisation des noeuds dans les Réseaux de Capteurs Sans Fil et l’Internet des Objets
Adrien VAN DEN BOSSCHE – Team RMESS – IRIT Grand amphi de l’IUT de Blagnac, Blagnac
Friday 1 December 2017, 10h30
Contributions à l’amélioration des communications dans les réseaux sans fil multi-sauts
Hanen IDOUDI – Team IRT – IRIT IUT Blagnac, Grand Amphi 1
Tuesday 14 November 2017, 10h30
Thinking Outside the Networking Box for Realizing the Potential of Wireless Networks
Gentian JAKLLARI – Team IRT – IRIT INP-ENSEEIHT, Salle des thèses
Thursday 9 November 2017, 10h30
IoT composé de réseaux terrestres et par satellite au service des Smart Cities: mobilité et hétérogénéité
Riadh DHAOU – Team IRT – IRIT INP-ENSEEIHT, Salle des thèses
Thursday 29 January 2015, 14h00
Programmation sûre de plates-formes embarquées de type multi/pluri-coeur
Claire PAGETTI – Team IRT – IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
Tuesday 12 November 2019 – Wednesday 13 November 2019
General Meeting du projet CyberSec4Europe
UT3 Paul Sabatier, IRIT