{"id":37345,"date":"2019-07-04T14:07:19","date_gmt":"2019-07-04T12:07:19","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=37345"},"modified":"2019-07-08T16:13:31","modified_gmt":"2019-07-08T14:13:31","slug":"soutenance-de-these-mohamed-aymen-labiod-contribution-a-lamelioration-des-transmissions-video-dans-les-reseaux-ad-hoc-vehiculaires-vanet","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/soutenance-de-these-mohamed-aymen-labiod-contribution-a-lamelioration-des-transmissions-video-dans-les-reseaux-ad-hoc-vehiculaires-vanet.html","title":{"rendered":"Soutenance de th\u00e8se: Mohamed Aymen LABIOD, Contribution \u00e0 l\u2019am\u00e9lioration des transmissions vid\u00e9o dans les r\u00e9seaux ad-hoc v\u00e9hiculaires (VANET)"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_242h87z8y5xe\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-37345'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-5fec6134221e1732d051ab49df2d0eff\">\n#top .av-special-heading.av-av_heading-5fec6134221e1732d051ab49df2d0eff{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-av_heading-5fec6134221e1732d051ab49df2d0eff .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-5fec6134221e1732d051ab49df2d0eff .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-5fec6134221e1732d051ab49df2d0eff av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Contribution \u00e0 l\u2019am\u00e9lioration des transmissions vid\u00e9o dans les r\u00e9seaux ad-hoc v\u00e9hiculaires (VANET)<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<h5><strong style=\"font-size: 16px;\">Mohamed Aymen LABIOD<\/strong><\/h5>\n<p><strong>Vendredi 05 juillet 2019<br \/>\n<\/strong>Universit\u00e9 Polytechnique Hauts de France<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<p>Th\u00e8ses en pr\u00e9paration \u00e0\u00a0<a href=\"https:\/\/www.theses.fr\/026404079\" target=\"_blank\" rel=\"dcterms:contributor noopener noreferrer\">Valenciennes<\/a>\u00a0en cotutelle avec\u00a0<a href=\"https:\/\/www.theses.fr\/127015159\" target=\"_blank\" rel=\"dcterms:contributor noopener noreferrer\">l\u2019Universit\u00e9 Badji Mokhtar-Annaba<\/a>\u00a0, dans le cadre de\u00a0<a href=\"https:\/\/www.theses.fr\/147297028\" target=\"_blank\" rel=\"dcterms:contributor noopener noreferrer\">\u00c9cole doctorale Sciences pour l\u2019Ing\u00e9nieur (Lille)<\/a><\/p>\n<h5><strong><span style=\"color: #800000;\">Jury:<\/span><\/strong><\/h5>\n<ul>\n<li>Mme SERIR A., Professeure \u00e0 l\u2019Universit\u00e9 d\u2019Alger, Alg\u00e9rie<\/li>\n<li>M.MELLOUK A., Professeur \u00e0 l\u2019Universit\u00e9 de Paris-Est Cr\u00e9teil Val-de-Marne<\/li>\n<li>M.BITAM S. Professeur \u00e0 l\u2019Universit\u00e9 de Biskra \u2013 Alg\u00e9rie<\/li>\n<li>Mme MOKRAOUI A., Professeur \u00e0 l\u2019Universit\u00e9 de Paris 13 \u2013 L2TI<\/li>\n<li>M.DOGHMANE N., Professeur \u00e0 l\u2019Universit\u00e9 d\u2019Annaba \u2013 LASA \u2013 Annaba \u2013 Alg\u00e9rie<\/li>\n<li>M.COUDOUX F.-X\u00a0.\u00a0, Professeur \u00e0 l\u2019Universit\u00e9 Polytechnique Hauts-de-France \u2013 IEMN DOAE<\/li>\n<li>M.CORLAY P., Professeur \u00e0 l\u2019Universit\u00e9 Polytechnique Hauts-de-France-IEMN DOAE, Invit\u00e9<\/li>\n<li>M.GHARBI M., Ma\u00eetre de conf\u00e9rences \u00e0 l\u2019Universit\u00e9 Polytechnique Hauts-de-France-IEMN DOAE, Invit\u00e9<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Actuellement les communications v\u00e9hiculaires sont devenues une r\u00e9alit\u00e9 guid\u00e9e par diverses applications. Notamment, la diffusion de vid\u00e9o de qualit\u00e9 \u00e9lev\u00e9e avec des contraintes de faible latence requises par les applications temps r\u00e9el. Gr\u00e2ce au niveau de compression jamais atteint auparavant, l\u2019encodeur H.265\/HEVC est tr\u00e8s prometteur pour la diffusion de vid\u00e9os en temps r\u00e9el dans les r\u00e9seaux ad hoc v\u00e9hiculaire (VANET). N\u00e9anmoins, la qualit\u00e9 de la vid\u00e9o re\u00e7ue est p\u00e9nalis\u00e9e par les mauvaises caract\u00e9ristiques du canal de transmission (disponibilit\u00e9, non stationnarit\u00e9, rapport signal \u00e0 bruit, etc.). Afin d\u2019am\u00e9liorer et d\u2019assurer une qualit\u00e9 vid\u00e9o minimale \u00e0 la r\u00e9ception nous proposons dans ce travail une optimisation conjointe source-canal-protocole de la transmission en tenant compte \u00e0 la fois des param\u00e8tres de transmission et d\u2019encodage vid\u00e9o.<\/p>\n<p>Dans un premier temps, nous montrons l\u2019int\u00e9r\u00eat et le gain apport\u00e9 par les solutions dites inter-couches \u00ab cross layer \u00bb. Par la suite, nous d\u00e9veloppons deux approches l\u2019une exploitant un \u00ab cross layer \u00bb entre la couche application et la couche MAC et une seconde exploitant les protocoles de transports dans l\u2019adaptation du flux vid\u00e9o. En ce qui concerne la premi\u00e8re approche nous proposons une solution utilisant une gestion hi\u00e9rarchique des trames au niveau des files d\u2019attentes de la couche MAC, bas\u00e9e sur l\u2019importance des images du flux vid\u00e9o. Dans une seconde solution, nous retenons le codage par descriptions multiples comme solution de protection \u00e0 la source. Les r\u00e9sultats de simulations obtenus pour plusieurs types de sc\u00e9narios v\u00e9hiculaires r\u00e9alistes montrent que les diff\u00e9rents sch\u00e9mas de transmission v\u00e9hiculaire propos\u00e9s offrent des am\u00e9liorations significatives en termes de qualit\u00e9 vid\u00e9o \u00e0 la r\u00e9ception et de retard de bout en bout par rapport aux sch\u00e9mas classiques.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":37350,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-37345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=37345"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37345\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/37350"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=37345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=37345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=37345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}