SOUTENANCE DE THESE DE DOCTORAT
\nMehdi LOUKIL
\nD\u00e9partement RS2M – T\u00e9l\u00e9com SudParis – Universit\u00e9 Pierre et Marie Curie – EDITE (Ecole Doctorale Informatique, T\u00e9l\u00e9communications, Electronique)<\/p>\n
\u00ab\u00a0Gestion de contexte pour l’optimisation de l’acc\u00e8s et l’adaptation des services sur des environnements r\u00e9seaux h\u00e9t\u00e9rog\u00e8nes\u00a0\u00bb.<\/strong><\/p>\n Cette th\u00e8se a \u00e9t\u00e9 r\u00e9alis\u00e9e sous la direction de Pr. Djamal ZEGHLACHE et encadr\u00e9e par Dr. Badii JOUABER. Vous \u00eates \u00e9galement convi\u00e9s au pot qui suivra la soutenance en salle A03.<\/p>\n Le jury est compos\u00e9 de :<\/strong><\/p>\n – Rapporteurs :<\/strong><\/p>\n Pr. Francine KRIEF, Professeur \u00e0 l\u2019Universit\u00e9 de Bordeaux 1 Pr. V\u00e9ronique VEQUE, Professeur \u00e0 SUPELEC R\u00e9sum\u00e9 de th\u00e8se :<\/strong><\/p>\n Dans le domaine des TIC, les services de demain seront certainement bas\u00e9s sur des syst\u00e8mes ubiquitaires, omnipr\u00e9sents et pervasifs. Ces syst\u00e8mes devront prendre en consid\u00e9ration diff\u00e9rents param\u00e8tres provenant de l\u2019environnement de l\u2019utilisateur, c\u2019est \u00e0 dire son contexte. Abstract :<\/strong><\/p>\n Future Information and Telecommunication Systems are expected to be pervasive and ubiquitous solutions, able to consider users\u2019 context and to automatically adapt to their environments. SOUTENANCE DE THESE DE DOCTORAT Mehdi LOUKIL D\u00e9partement RS2M – T\u00e9l\u00e9com SudParis – Universit\u00e9 Pierre et Marie Curie – EDITE (Ecole Doctorale Informatique, T\u00e9l\u00e9communications, Electronique) \u00ab\u00a0Gestion de contexte pour l’optimisation de l’acc\u00e8s et l’adaptation des services sur des environnements r\u00e9seaux h\u00e9t\u00e9rog\u00e8nes\u00a0\u00bb. Cette th\u00e8se a \u00e9t\u00e9 r\u00e9alis\u00e9e sous la direction de Pr. Djamal ZEGHLACHE et encadr\u00e9e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[418],"tags":[],"class_list":["post-386","post","type-post","status-publish","format-standard","hentry","category-theses-2012-fr","entry"],"_links":{"self":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/386","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/comments?post=386"}],"version-history":[{"count":1,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/386\/revisions"}],"predecessor-version":[{"id":1875,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/386\/revisions\/1875"}],"wp:attachment":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/media?parent=386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/categories?post=386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/tags?post=386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
\nlieu :<\/strong>
\n– le jeudi 20 D\u00e9cembre<\/strong> 2012 \u00e0 14h<\/strong>30
\n– Salle A001<\/strong> \u00e0 T\u00e9l\u00e9com SudParis, 9 rue Charles Fourier, 91000 Evry.<\/p>\n
\n Pr. Serge GARLATTI, Professeur \u00e0 TELECOM Bretagne
\n
\n– Examinateurs :<\/strong><\/p>\n
\n Dr. Houda LABIOD, Ma\u00eetre de Conf\u00e9rences \u00e0 TELECOM ParisTech
\n Dr. Lila BOUKHATEM, Ma\u00eetre de Conf\u00e9rences \u00e0 l’Universit\u00e9 Paris-Sud XI
\n Pr. Guy PUJOLLE, Professeur \u00e0 l’Universit\u00e9 de Paris 6 \u00ab\u00a0Pierre et Marie Curie\u00a0\u00bb<\/p>\n
\nLe contexte de l\u2019utilisateur peut \u00eatre compos\u00e9 d\u2019informations statiques ou dynamiques, objectives ou subjectives, quantitatives ou qualitatives. Il peut inclure des donn\u00e9es telles que la localisation g\u00e9ographique, les caract\u00e9ristiques du terminal utilis\u00e9, la temp\u00e9rature ambiante, l\u2019humeur de l\u2019utilisateur.
\nAfin d\u2019am\u00e9liorer la QoS et la QoE, les services et les syst\u00e8mes doivent \u00eatre adapt\u00e9s aux changements du contexte des utilisateurs. Le contexte doit donc \u00eatre collect\u00e9 et interpr\u00e9t\u00e9 et les r\u00e8gles d\u2019adaptation du syst\u00e8me doivent \u00eatre d\u00e9finies. Sur les syst\u00e8mes \u00e9tendus, riches, dynamiques et h\u00e9t\u00e9rog\u00e8nes, tels que ceux consid\u00e9r\u00e9s dans le cadre de cette th\u00e8se, ces op\u00e9rations doivent \u00eatre automatis\u00e9es.
\nVu la quantit\u00e9 et la complexit\u00e9 des donn\u00e9es contextuelles \u00e0 consid\u00e9rer, l\u2019utilisation de la s\u00e9mantique dans la gestion de contexte peut faciliter cette automatisation et ouvrir la porte au raisonnement et \u00e0 l\u2019adaptation automatiques.
\nAujourd\u2019hui, peu de solutions viables existent pour cette probl\u00e9matique. Nous proposons alors d\u2019utiliser et d\u2019adapter des m\u00e9canismes et technologies provenant du web s\u00e9mantique pour d\u00e9crire et manipuler les informations de contexte. Dans un premier temps, nous avons propos\u00e9 une m\u00e9thodologie de conception qui nous a permit de proposer \u00ab Ubiquity-Ont \u00bb : une ontologie g\u00e9n\u00e9rique au domaine des TIC, flexible et extensible. Les donn\u00e9es de contexte ont alors \u00e9t\u00e9 d\u00e9crites sous forme de concepts et d\u2019instances, reli\u00e9s par des relations s\u00e9mantiques.
\nNous avons ensuite propos\u00e9 une architecture overlay, compos\u00e9e de deux niveaux de vitalisation et permettant d\u2019int\u00e9grer un gestionnaire de contexte, bas\u00e9 sur la s\u00e9mantique, sur des environnements r\u00e9seaux et services h\u00e9t\u00e9rog\u00e8nes.
\nCette solution overlay permet de (a) masquer l\u2019h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 des composants du syst\u00e8me et (b) d\u2019augmenter virtuellement les entit\u00e9s du syst\u00e8me existant par les capacit\u00e9s n\u00e9cessaires \u00e0 la manipulation et au raisonnement sur les donn\u00e9es s\u00e9mantiques du contexte.
\nNos propositions ont \u00e9t\u00e9s impl\u00e9ment\u00e9es et test\u00e9es sur une plateforme r\u00e9elle et appliqu\u00e9es \u00e0 deux cas d\u2019\u00e9tudes : Gestion de la mobilit\u00e9 sur des environnements de r\u00e9seaux d\u2019acc\u00e8s h\u00e9t\u00e9rog\u00e8nes et Optimisation de la consommation d\u2019\u00e9nergie sur les terminaux mobiles.<\/p>\n
\nTraditional configuration and management tools are not adapted. The richness, the heterogeneity and the complexity of the upcoming systems require automated solutions able to gather contextual information, to reason on them and to make the appropriate adaptation decisions. The representation and the sharing of contextual information is a key issue.
\nIn this thesis, we proposed and used a methodology to conceive \u00ab Ubiquity-Ont \u00bb, a generic ontology dedicated to Information and Telecommunication Systems. Contextual information are then described through semantic concepts, instances and relations.
\nWe then proposed an overlay architecture, composed of two virtualization layers that can integrate a semantic context management framework over existing networking environments. This architecture is able (a) to hide any heterogeneity among the system components and (b) to augment the different entities with additional capacities for context gathering, reasoning and sharing operations.
\nThe proposed solutions were then implemented and tested in Lab for two applications. The first is related to mobility management over heterogeneous Wireless Networks and the second aims to power optimization on mobile terminals. These two case studies helped in proving and enhancing the proposed solutions.<\/p>\n
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