{"id":4478,"date":"2024-12-02T13:41:53","date_gmt":"2024-12-02T12:41:53","guid":{"rendered":"http:\/\/www.telecom-sudparis.eu\/?p=4478"},"modified":"2025-02-14T14:36:09","modified_gmt":"2025-02-14T13:36:09","slug":"lte-4pmr-lag-securisee-pour-les-services-de-securite","status":"publish","type":"post","link":"https:\/\/www.telecom-sudparis.eu\/recherche\/lte-4pmr-lag-securisee-pour-les-services-de-securite\/","title":{"rendered":"LTE 4PMR : la 4G pour les services de s\u00e9curit\u00e9"},"content":{"rendered":"
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\n\t LTE 4PMR : la 4G s\u00e9curis\u00e9e <\/h1>\n \n\t <\/header>\n
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Les forces de l\u2019ordre, services de s\u00e9curit\u00e9 et de secours utilisent pour leurs communications des technologies sp\u00e9cifiques (tetra\/tetrapol) sur des fr\u00e9quences s\u00e9curis\u00e9es. Celles-ci restent limit\u00e9es et ne permettent pas de transmettre des donn\u00e9es haut d\u00e9bit et multim\u00e9dia. Pour fournir \u00e0 ces services une technologie de communication haut d\u00e9bit, s\u00e9curis\u00e9e et adapt\u00e9e \u00e0 leurs besoins, le projet LTE4PMR r\u00e9unit Airbus Group, Nokia, Sequans, T\u00e9l\u00e9com SudParis et T\u00e9l\u00e9com ParisTech.<\/p>

LTE, Long Term Evolution, d\u00e9signe la technologie 4G de derni\u00e8re g\u00e9n\u00e9ration, et PMR, Professional Mobile Radio, le syst\u00e8me de radios mobiles pour les professionnels. Le projet LTE4PMR vise \u00e0 faire \u00e9voluer les services de la PMR pour les offrir sur la technologie LTE, sur les bandes de fr\u00e9quence s\u00e9curis\u00e9es.<\/p>

Les activit\u00e9s en lien avec ce projet, au sein des deux \u00e9coles de l'IMT, sont coordonn\u00e9es par Badii Jouaber, ma\u00eetre de conf\u00e9rences au d\u00e9partement RS2M de T\u00e9l\u00e9com SudParis. Elles concernent essentiellement les optimisations technologiques applicables aux services de la PPM sur LTE ainsi que l\u2019am\u00e9lioration de la couverture et de la r\u00e9silience sur ces r\u00e9seaux.<\/p>

Les d\u00e9fis sont multiples dans la mise en place de cette technologie : d\u00e9finir de nouvelles techniques optimis\u00e9es pour la transmission et la diffusion des flux multim\u00e9dia pour des groupes d\u2019utilisateurs en mobilit\u00e9, avec prise en en compte de la couverture, de la qualit\u00e9 de la transmission et de l\u2019organisation des groupes d\u2019utilisateurs. Assurer la r\u00e9silience des infrastructures dans les situations extr\u00eames o\u00f9 la couverture des r\u00e9seaux peut \u00eatre endommag\u00e9e (en cas d\u2019incendie ou d\u2019inondation, par exemple).<\/p>

Des exp\u00e9rimentations et d\u00e9monstrations sur des plateformes de recherche LTE sont pr\u00e9vues dans chacune des \u00e9coles.<\/p>

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Plateforme exp\u00e9rimentale LTE bas\u00e9e sur OpenAirInterfaceTM (http:\/\/www.openairinterface.org\/)<\/figcaption><\/figure>
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Exp\u00e9rimentions SDR (Software Defined Radio) avec des cartes USRP \"Universal Software Radio Peripheral\" et OAI.<\/figcaption><\/figure> <\/div>\n <\/article>\n\n <\/main>\n <\/div>\n <\/div>\n\t<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Le projet LTE4PMR r\u00e9unit Airbus Group, Nokia, Sequans, T\u00e9l\u00e9com SudParis et T\u00e9l\u00e9com ParisTech.<\/p>\n","protected":false},"author":1,"featured_media":4416,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4478","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recherche"],"yoast_head":"\nLTE 4PMR : la 4G pour les services de s\u00e9curit\u00e9 - T\u00e9l\u00e9com SudParis<\/title>\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.telecom-sudparis.eu\/recherche\/lte-4pmr-lag-securisee-pour-les-services-de-securite\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LTE 4PMR : la 4G pour les services de s\u00e9curit\u00e9 - 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