{"id":209,"date":"2011-05-06T10:54:48","date_gmt":"2011-05-06T08:54:48","guid":{"rendered":"https:\/\/samovar2022.int-evry.fr\/index.php\/2011\/05\/06\/soutenance-these-de-mohammed-boutabia\/"},"modified":"2020-09-04T18:47:16","modified_gmt":"2020-09-04T16:47:16","slug":"soutenance-these-de-mohammed-boutabia","status":"publish","type":"post","link":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/2011\/05\/06\/soutenance-these-de-mohammed-boutabia\/","title":{"rendered":"SOUTENANCE : Th\u00e8se de Mohammed Boutabia"},"content":{"rendered":"<p><strong>8 Avril<\/strong> 2011 \u00e0 14h00<\/p>\n<p>\u00ab\u00a0<strong>Continuit\u00e9 de service dans les r\u00e9seaux sans fil h\u00e9t\u00e9rog\u00e8nes pour les applications \u00e0 contrainte de temps<\/strong>\u00a0\u00bb<\/p>\n<p>Sur le campus de T\u00e9l\u00e9com SudParis, 9 rue Charles Fourier \u00e0 Evry, en salle A001<\/p>\n<p><strong>Jury<\/strong><\/p>\n<p>&#8211;  Andr\u00e9-Luc BEYLOT, ENSEEIHT-Toulouse (Rapporteur)<br \/>\n&#8211;  Dominique GAITI, UTT-Troyes (Rapporteur)<br \/>\n&#8211;  Laurent TOUTAIN, T\u00e9l\u00e9com Bretagne (Examinateur)<br \/>\n&#8211;  Pascal LORENZ, IUT-Colmar (Examinateur)<br \/>\n&#8211;  Marion BERBINEAU, INREST-Lille (Examinateur)<br \/>\n&#8211;  Guy PUJOLLE, Universit\u00e9 Paris 6 Pierre et Marie Curie (Examinateur)<br \/>\n&#8211;  Hossam AFIFI, T\u00e9l\u00e9com SudParis (Directeur de th\u00e8se)<\/p>\n<p><strong>R\u00e9sum\u00e9<\/strong><\/p>\n<p>La <strong>continuit\u00e9 de service<\/strong> est un \u00e9l\u00e9ment important dans les communications mobiles. <\/p>\n<p>Avec la coexistence de diff\u00e9rentes technologies d&rsquo;acc\u00e8s au r\u00e9seau et l&rsquo;\u00e9mergence de dispositifs mobiles avec plusieurs interfaces r\u00e9seau, les fournisseurs de services doivent maintenir la communication en cours lorsque les mobiles voyagent entre des r\u00e9seaux h\u00e9t\u00e9rog\u00e8nes. <\/p>\n<p>Des services comme l&rsquo;IPTV, vid\u00e9o \u00e0 la demande ou la voix sur IP sont largement propos\u00e9s par les op\u00e9rateurs pour lesquels la continuit\u00e9 de service doit \u00eatre garantie. <\/p>\n<p>Cette th\u00e8se est consacr\u00e9e \u00e0 la <strong>continuit\u00e9 du service pour des applications temps r\u00e9el dans des r\u00e9seaux h\u00e9t\u00e9rog\u00e8nes<\/strong>. Nous abordons ce probl\u00e8me de deux perspectives: la <strong>mobilit\u00e9 de session et la mobilit\u00e9 de terminal<\/strong>. Bien que ces deux m\u00e9canismes aient le m\u00eame but qui est d&rsquo;assurer la continuit\u00e9 de service lors du changement de terminal ou de r\u00e9seau d&rsquo;acc\u00e8s, chaque technique a ses propres <strong>d\u00e9fis et contraintes<\/strong>.<\/p>\n<p>En ce qui concerne la mobilit\u00e9 de session, un <strong>nouveau protocole de signalisation<\/strong> a \u00e9t\u00e9 propos\u00e9 pour transf\u00e9rer la session entre les diff\u00e9rents terminaux d&rsquo;un utilisateur. <\/p>\n<p>Ce protocole a \u00e9t\u00e9 con\u00e7u pour les sc\u00e9narios de streaming vid\u00e9o. Son impl\u00e9mentation a permis la validation du protocole propos\u00e9 ainsi que son \u00e9valuation. En outre, nous traitons le probl\u00e8me de l&rsquo;<strong>adaptation des flux multim\u00e9dias<\/strong>, notamment la <strong>ren\u00e9gociation des param\u00e8tres de la qualit\u00e9 de service<\/strong> puisque la session pourrait \u00eatre transf\u00e9r\u00e9 \u00e0 un nouveau terminal avec des capacit\u00e9s diff\u00e9rentes que le terminal d&rsquo;origine. <\/p>\n<p>Cette ren\u00e9gociation peut \u00eatre \u00e9tendue pour couvrir le cas o\u00f9 certains param\u00e8tres internes sont d\u00e9grad\u00e9s au cours de la session dans le m\u00eame terminal.<\/p>\n<p>Quant \u00e0 la mobilit\u00e9 de terminal, nous proposons un m\u00e9canisme bas\u00e9 sur l&rsquo;utilisation de la nouvelle norme IEEE802.21 et du protocole de mobilit\u00e9 FMIPv6. <\/p>\n<p>Le but de cette proposition est de <strong>r\u00e9duire le d\u00e9lai du handover et la taille de l&rsquo;espace m\u00e9moire d\u00e9di\u00e9e au niveau des routeurs d&rsquo;acc\u00e8s<\/strong>. En outre, une optimisation est propos\u00e9e pour FMIPv6 afin de maximiser la probabilit\u00e9 de son mode pr\u00e9dictive. <\/p>\n<p>Dans le m\u00eame contexte, la mobilit\u00e9 dans l&rsquo;IP Multim\u00e9dia Subsystem (IMS) est consid\u00e9r\u00e9 et une solution adapt\u00e9e est propos\u00e9e pour r\u00e9pondre aux exigences de l&rsquo;IMS. Enfin, nous menons une \u00e9tude comparative entre les diff\u00e9rentes variantes de Mobile IP dans le cas de handover vertical. En se basant sur cette comparaison, nous donnons quelques <strong>directives qui devraient aider \u00e0 choisir le protocole le plus efficace suivant des param\u00e8tres sp\u00e9cifiques<\/strong>. Les solutions propos\u00e9es et les \u00e9tudes ont \u00e9t\u00e9 \u00e9valu\u00e9es avec des m\u00e9thodes analytiques et\/ou en faisant appel \u00e0 des simulations.<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>8 Avril 2011 \u00e0 14h00 \u00ab\u00a0Continuit\u00e9 de service dans les r\u00e9seaux sans fil h\u00e9t\u00e9rog\u00e8nes pour les applications \u00e0 contrainte de temps\u00a0\u00bb Sur le campus de T\u00e9l\u00e9com SudParis, 9 rue Charles Fourier \u00e0 Evry, en salle A001 Jury &#8211; Andr\u00e9-Luc BEYLOT, ENSEEIHT-Toulouse (Rapporteur) &#8211; Dominique GAITI, UTT-Troyes (Rapporteur) &#8211; Laurent TOUTAIN, T\u00e9l\u00e9com Bretagne (Examinateur) &#8211; Pascal [&hellip;]<\/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":[7],"tags":[],"class_list":["post-209","post","type-post","status-publish","format-standard","hentry","category-uncategorized-fr","entry"],"_links":{"self":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/209","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=209"}],"version-history":[{"count":1,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/209\/revisions"}],"predecessor-version":[{"id":2014,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/posts\/209\/revisions\/2014"}],"wp:attachment":[{"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/media?parent=209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/categories?post=209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samovar.telecom-sudparis.eu\/index.php\/wp-json\/wp\/v2\/tags?post=209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}