{"id":2336,"date":"2019-11-14T09:43:56","date_gmt":"2019-11-14T12:43:56","guid":{"rendered":"https:\/\/ctcp.org.br\/?p=2336"},"modified":"2019-11-14T09:43:56","modified_gmt":"2019-11-14T12:43:56","slug":"testes-mostram-convivencia-possivel-entre-recepcao-de-banda-c-e-5g","status":"publish","type":"post","link":"https:\/\/ctcp.org.br\/blog\/testes-mostram-convivencia-possivel-entre-recepcao-de-banda-c-e-5g\/","title":{"rendered":"Testes mostram conviv\u00eancia poss\u00edvel entre recep\u00e7\u00e3o de banda C e 5G"},"content":{"rendered":"\n<p>Os testes patrocinados pelas operadoras de telecomunica\u00e7\u00f5es (Claro, Vivo, TIM e Oi) e conduzidos pelo CPqD para avaliar a possibilidade de conviv\u00eancia entre as transmiss\u00f5es de 5G e as recep\u00e7\u00f5es de TVRO (transmiss\u00e3o de TV via sat\u00e9lite) em banda C mostraram que \u00e9 poss\u00edvel a conviv\u00eancia. O relat\u00f3rio final est\u00e1 sendo ajustado e deve ser apresentado na semana que vem ao Minist\u00e9rio de Ci\u00eancia, Tecnologia, Inova\u00e7\u00f5es e Comunica\u00e7\u00f5es (MCTIC) e para a Anatel. O que os testes mostraram \u00e9 que h\u00e1 filtros capazes de mitigar as eventuais interfer\u00eancias e que, mesmo sem os filtros, em situa\u00e7\u00f5es reais de posicionamento e pot\u00eancia de transmiss\u00f5es 5G, os problema de interfer\u00eancia seriam bem menos graves do que aqueles apurados pela Anatel quando conduziu os mesmos testes, mas em condi\u00e7\u00f5es extremas.<\/p>\n\n\n\n<p>Segundo apurou este notici\u00e1rio, os testes mostraram que apenas nas condi\u00e7\u00f5es em que a antena de banda C est\u00e1 com a linha de apontamento para o sat\u00e9lite coincidindo com a ERB 5G \u00e9 que existe interfer\u00eancia a ponto de necessitar um reposicionamento da parab\u00f3lica. Segundo o estudo, \u00e9 perfeitamente poss\u00edvel um plano de mitiga\u00e7\u00e3o que preveja a instala\u00e7\u00e3o de filtros de LNB. Foram testados oito modelos de filtros de nova gera\u00e7\u00e3o. Destes, dois foram capazes de eliminar as interfer\u00eancias em parab\u00f3licas de 1,5m recebendo os sinais de 5G nas condi\u00e7\u00f5es mais extremas (chamado de Cen\u00e1rio Anatel), e quatro passaram nos testes em antenas de 1,9m. O estudo tamb\u00e9m assumiu como premissa que os sinais de TV captados pelos sistemas de TVRO deixaria de ser transmitido na banda C estendida (3,625 GHz a 3,7 GHz). Esta faixa continuaria a ser utilizada para servi\u00e7os de sat\u00e9lite dedicados a aplica\u00e7\u00f5es corporativas, no qual a mitiga\u00e7\u00e3o por meio de filtros mais avan\u00e7ados n\u00e3o significa um custo inviabilizante.<\/p>\n\n\n\n<p><strong>Decis\u00e3o<\/strong><\/p>\n\n\n\n<p>Os resultados dos testes eram aguardados porque devem ser determinantes para que a Anatel defina qual ser\u00e1 a pol\u00edtica de mitiga\u00e7\u00e3o. A ag\u00eancia tem, pelo menos em seu n\u00edvel t\u00e9cnico, a inclina\u00e7\u00e3o para recomendar um plano de migra\u00e7\u00e3o dos canais de TVRO para a banda Ku, o que tem a vantagem de resolver de uma vez os problemas de interfer\u00eancia e modernizar a recep\u00e7\u00e3o de TV via sat\u00e9lite. Como efeitos colaterais h\u00e1 o custo (estimado em pelo menos R$ 2,9 bilh\u00f5es, a depender da quantidade de resid\u00eancias que ter\u00e3o seus kits de recep\u00e7\u00e3o substitu\u00eddos), a complexidade log\u00edstica de ter que fazer uma distribui\u00e7\u00e3o e instala\u00e7\u00e3o massiva de kits e a necessidade de escolher um sat\u00e9lite que receber\u00e1 os canais de TV de forma agrupada (para que todas as parab\u00f3licas sejam apontadas para o mesmo lugar).<\/p>\n\n\n\n<p>J\u00e1 as teles prop\u00f5em uma mitiga\u00e7\u00e3o por meio de filtros quando de fato o problema de interfer\u00eancia se apresentar, o que potencialmente teria custos menores (estimativas iniciais apontava para cerca de R$ 500 milh\u00f5es) sem a necessidade de grandes rearranjos de mercado. O lado negativo \u00e9 que a faixa de 3,6 GHz continuaria sujeita a interfer\u00eancias caso, no futuro, o 5G precise de mais espectro.<\/p>\n\n\n\n<p>Fonte: Teletime<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Os testes patrocinados pelas operadoras de telecomunica\u00e7\u00f5es (Claro, Vivo, TIM e Oi) e conduzidos pelo CPqD para avaliar a possibilidade<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2336","post","type-post","status-publish","format-standard","hentry","category-5g"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Testes mostram conviv\u00eancia poss\u00edvel entre recep\u00e7\u00e3o de banda C e 5G - BLOG CTCP<\/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:\/\/ctcp.org.br\/blog\/testes-mostram-convivencia-possivel-entre-recepcao-de-banda-c-e-5g\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Testes mostram conviv\u00eancia poss\u00edvel entre recep\u00e7\u00e3o de banda C e 5G - 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