{"id":220184,"date":"2016-02-24T23:00:00","date_gmt":"2016-02-24T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/banc-dessai-lte-u-laa-pour-technologies-4g\/"},"modified":"2016-02-24T23:00:00","modified_gmt":"2016-02-24T23:00:00","slug":"banc-dessai-lte-u-laa-pour-technologies-4g","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/banc-dessai-lte-u-laa-pour-technologies-4g\/","title":{"rendered":"Banc d&rsquo;essai LTE-U\/LAA pour technologies 4G+"},"content":{"rendered":"<p>Ce banc d&rsquo;essai temps r&eacute;el inclut une couche physique LTE bas&eacute;e FPGA dans le code source, de sorte que diff&eacute;rents sc&eacute;narios LTE-U et LAA puissent &ecirc;tre test&eacute;s, &eacute;valu&eacute;s et potentiellement enrichis, pour estimer les performances et augmenter les d&eacute;bits de donn&eacute;es de syst&egrave;mes reposant sur les infrastructures LTE et 802.11 existantes.<br \/>\nEtant donn&eacute; que les normes LTE-U et LAA utilisent une bande ISM 5,9 GHz non soumise &agrave; licence pour &eacute;tendre le spectre cellulaire, les appareils compatibles avec le LTE-U et le LAA doivent &quot;partager&quot; le spectre avec les &eacute;quipements WiFi de type 802.11a et 802.11ac. Le groupe de sp&eacute;cifications techniques du projet 3GPP s&rsquo;int&eacute;resse particuli&egrave;rement &agrave; la norme LAA car, contrairement au LTE-U qui est soumis &agrave; la r&eacute;glementation locale de chaque pays en mati&egrave;re de spectre, le LAA est applicable &agrave; l&rsquo;&eacute;chelle mondiale.<br \/>\nReposant sur la radio logicielle propri&eacute;taire USRP RIO et sur la suite LabVIEW Communications System Design, ce banc d&rsquo;essai est un syst&egrave;me pr&ecirc;t &agrave; l&#8217;emploi compos&eacute;, en plus de la suite, d&rsquo;un framework d&rsquo;applications LTE sous LabVIEW Communications, d&rsquo;un logiciel configurable de r&eacute;f&eacute;rence LTE-U et LAA, ainsi que de deux radios logicielles USRP-2953R bas&eacute;es FPGA. <\/p>\n<\/p>\n<p>&quot;Plusieurs suggestions ont &eacute;t&eacute; incluses au standard 3GPP propos&eacute; pour minimiser les interf&eacute;rences avec les utilisateurs de bandes non soumises &agrave; licence,&quot; explique James Kimery, Directeur du service Recherche RF et Radio logicielle chez NI. &quot;Bien entendu, il est n&eacute;cessaire de mener les phases de prototypage et de test avec grande application pour faciliter l&rsquo;adoption d&rsquo;une nouvelle norme. Le banc d&rsquo;essai LTE-U\/LAA de NI permettra aux chercheurs d&rsquo;&eacute;valuer l&rsquo;impact de cette nouvelle norme dans des conditions de test sp&eacute;cifiques.&quot;<\/p>\n<\/p>\n<p><a target=\"_blank\" href=\"http:\/\/www.ni.com\/white-paper\/53044\/en\" rel=\"noopener\">www.ni.com\/white-paper\/53044\/en<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour am\u00e9liorer la 4G et faciliter la transition vers la 5G, National Instruments pr\u00e9sente un syst\u00e8me de test, d&rsquo;exp\u00e9rimentation et de prototypage des nouvelles technologies d&rsquo;acc\u00e8s sans fil LTE Unlicensed (LTE-U) et\/ou License Assisted Access (LAA), normes devenues aujourd\u2019hui n\u00e9cessaires. <\/p>\n","protected":false},"author":22,"featured_media":220185,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-220184","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Banc d&#039;essai LTE-U\/LAA pour technologies 4G+ ...<\/title>\n<meta name=\"description\" content=\"Pour am\u00e9liorer la 4G et faciliter la transition vers la 5G, National Instruments pr\u00e9sente un syst\u00e8me de test, d&#039;exp\u00e9rimentation et de prototypage des...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/220184\/\" \/>\n<meta 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