{"id":237,"date":"2011-09-30T13:59:31","date_gmt":"2011-09-30T11:59:31","guid":{"rendered":"https:\/\/samovar2022.int-evry.fr\/index.php\/2011\/09\/30\/soutenance-these-de-mohamed-chedly-ghedira\/"},"modified":"2020-09-04T18:46:59","modified_gmt":"2020-09-04T16:46:59","slug":"soutenance-these-de-mohamed-chedly-ghedira","status":"publish","type":"post","link":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/2011\/09\/30\/soutenance-these-de-mohamed-chedly-ghedira\/","title":{"rendered":"SOUTENANCE : Th\u00e8se de Mohamed Chedly Ghedira"},"content":{"rendered":"

mercredi 28 septembre<\/strong> 2011 \u00e0 14<\/strong>h00 Salle A003. \u00ab\u00a0Le guidage routier et les algorithmes de routage dans les r\u00e9seaux v\u00e9hiculaires\u00a0\u00bb<\/strong><\/p>\n

Jury<\/strong><\/p>\n

– M. Guy Pujolle, Professeur, LIP6, Pr\u00e9sident
\n– M. Ken Chen, Professeur, Paris 13, rapporteur
\n– Mme Francine Krief, Professeur, ENSEIRB, examinatrice
\n– M. Fethi Filali, HDR, QU Wireless Innovations Center, Qatar, rapporteur
\n– M. Vincent Gauthier, Ma\u00eetre de conf\u00e9rence, T\u00e9l\u00e9com SudParis, encadrant
\n– M. Hossam Afifi, Professeur, T\u00e9l\u00e9com SudParis, Directeur de th\u00e8se<\/p>\n

R\u00e9sum\u00e9<\/strong><\/p>\n

\u00ab\u00a0Dans cette th\u00e8se, nous nous int\u00e9ressons \u00e0 deux types d’architectures dans les r\u00e9seaux v\u00e9hiculaires : les r\u00e9seaux \u00e0 infrastructure et les r\u00e9seaux sans infrastructure. L’objectif de ce travail est de d\u00e9finir des solutions am\u00e9liorant la connectivit\u00e9 des passagers des v\u00e9hicules dans des environnements \u00e0 densit\u00e9 variable en points d’acc\u00e8s.
\nPour ceci, dans un premier temps, nous nous int\u00e9ressons aux algorithmes de guidage routier (dont l’objet est de guider un v\u00e9hicule d’un point de d\u00e9part vers un point d’arriv\u00e9e) en prenant en compte les emplacements des points d’acc\u00e8s le long des routes. Notre premi\u00e8re contribution est de d\u00e9finir un algorithme de guidage qui offre une connectivit\u00e9 sup\u00e9rieure au chemin par d\u00e9faut (en g\u00e9n\u00e9ral le plus court chemin) tout en maintenant une distance parcourue raisonnable pour les passagers du v\u00e9hicule.
\nNous nous int\u00e9ressons \u00e9galement \u00e0 la minimisation du nombre de handovers afin d’am\u00e9liorer la qualit\u00e9 de service du r\u00e9seau. Nous avons \u00e9valu\u00e9 notre algorithme en termes de distance couverte et du nombre de handovers, tout en s’assurant de garder une distance totale parcourue raisonnable.
\nNous avons \u00e9tudi\u00e9 dans un deuxi\u00e8me temps l’impact du choix de l’algorithme du guidage routier sur les performances de la couche r\u00e9seau, o\u00f9 nous avons pris en compte deux types de protocoles de routage de donn\u00e9es : r\u00e9actif et proactif.
\nEnsuite, nous avons \u00e9tudi\u00e9 une probl\u00e9matique r\u00e9currente dans les r\u00e9seaux v\u00e9hiculaires qui est le routage des donn\u00e9es de v\u00e9hicule \u00e0 v\u00e9hicule. Ceci est particuli\u00e8rement utile en absence d’une infrastructure disponible sur la route. Nous proposons une solution inter-couches (\u00ab cross-layer \u00bb) qui tire profit des caract\u00e9ristiques des r\u00e9seaux sans fil pour offrir un protocole de routage multi-sauts. Contrairement \u00e0 la plupart des propositions de protocoles de routage, notre solution ne requiert pas un \u00e9change de messages de signalisation entre les voisins, ce qui am\u00e9liore les performances du r\u00e9seau en termes de charge utile et efficacit\u00e9, surtout pour un r\u00e9seau \u00e0 forte mobilit\u00e9 comme c’est le cas pour des r\u00e9seaux v\u00e9hiculaires o\u00f9 les voisins changent d’une seconde \u00e0 une autre, rendant probl\u00e9matique la mise \u00e0 jour des informations de chaque noeud mobile sur son entourage.\u00a0\u00bb<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

mercredi 28 septembre 2011 \u00e0 14h00 Salle A003. \u00ab\u00a0Le guidage routier et les algorithmes de routage dans les r\u00e9seaux v\u00e9hiculaires\u00a0\u00bb Jury – M. Guy Pujolle, Professeur, LIP6, Pr\u00e9sident – M. Ken Chen, Professeur, Paris 13, rapporteur – Mme Francine Krief, Professeur, ENSEIRB, examinatrice – M. Fethi Filali, HDR, QU Wireless Innovations Center, Qatar, rapporteur – […]<\/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":[428],"tags":[],"class_list":["post-237","post","type-post","status-publish","format-standard","hentry","category-theses-2011-fr","entry"],"_links":{"self":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/237","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=237"}],"version-history":[{"count":1,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/237\/revisions"}],"predecessor-version":[{"id":1985,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/237\/revisions\/1985"}],"wp:attachment":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/media?parent=237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/categories?post=237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/tags?post=237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}