Nous recherchons actuellement à recruter un candidat pour une thèse sur le thème des communications coopératives dans les réseaux de capteurs corporels (WBAN). Cette thèse est financée par le projet ANR
CORMORAN, et se déroulera dans le laboratoire CITI à l'INSA de Lyon. Le début de la thèse est souhaité pour le 1er septembre 2012.
Les candidats intéressés peuvent envoyer leur dossier à claire.goursaud@insa- lyon.fr, et [email protected], avant le 15 juin 2012. Ce dossier sera composé :
- d'un CV détaillé
- d'une lettre de motivation
- des relevés de notes et résultats M1, M2 avec le classement sur la promotion - de lettre(s) de recommandation
SUJET :
Titre : Cooperative communications in Body Area Networks Encadrants : Claire Goursaud; Jean-Marie Gorce
Résumé : Wireless Body Area Networks (WBANs) have already started fulfilling market needs in a variety of applications such as emergency and rescue, healthcare, entertainment, personal multimedia, clothing, etc. In the near future, those wireless networks are expected to change drastically our daily life, by participating as a core enabling technology of the Internet of Things (IoT).
The draft IEEE 802.15.6 standard gives a framework for the WBAN design.
However, the MAC protocol is still an open issue, particularly for the cooperative strategies [1].
In this context, new cooperative schemes that recently appeared in the field of wireless communications can be applied, either within one single wearable network or between distinct wearable networks at short transmission ranges, providing respectively intra-WBAN and/or inter-WBAN cooperation [2].
Groups of cooperative WBANs disseminated in crowded places could hence play a significant role in future communication networks, by serving as
distributed pieces of the system skeleton though Body to Body (B2B)
interactions. But cooperative communication schemes are also of interest to side radiolocation applications, providing information redundancy, better coverage and better location accuracy. In this thesis, the WBAN will be considered as a self-organized network having a coordinator and a set of
peripheral nodes. The nodes are assumed mostly IEEE 802.15.6 compliant, albeit some adaptation could be proposed if necessary. First, all the nodes within a given WBAN know (and trust) each other. If the topology and the influence of the environment (interference level etc.) may vary, the set of nodes remain the same. The aim will be to propose robust transmission schemes to ensure QoS criteria related to delivery ratio and latency, but under radiating energy minimization to ensure low human exposure and to reduce possible interference between WBANs. This work will use recent results from compress-and-forward relaying schemes to achieve optimal
performance[3-5]. Optimal schemes have been indeed provided in the literature for the classical source-relay-destination scenario, but for the specific BAN case, optimal schemes are not known in the case of a multiple- sources/single-destination scenario when all sources may act as relays.
[1] Athanassios Boulis, David Smith, Dino Miniutti, Lavy Libman, Yuri Tselishchev Challenges in body area networks for healthcare: the MAC , IEEE Communications
Magazine, Vol. 50, Issue:5, Page(s): 100 - 106, May 2012
[2] Paul Ferrand, Mickael Maman, Claire Goursaud, Jean-Marie Gorce and Laurent Ouvry Performance evaluation of direct and cooperative transmissions in body area networks, Annals of Telecommunications, Vol. 66, No 3-4, March-April 2011
[3]M. Nokleby, B. Aazhang, "Cooperative Compute-and-Forward," submitted to IEEE Transactions on Information Theory, Mar. 2012
[4] M. Nokleby, B. Aazhang, "Unchaining from the Channel: Cooperative Computation over Multiple-access Channels," IEEE Information Theory Workshop, Paraty, Brazil, October 2011
[5]L. Xiao, T. Fuja, J. Kliewer, and D. Costello, “A network coding approach to cooperative diversity,” IEEE Transactions on information theory, October, 2007
