{"id":54163,"date":"2019-12-19T00:00:00","date_gmt":"2019-12-18T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/chto-takoe-zona-frenelya-i-ccq-client-connection-quality-ili-fundamentalnye-faktory-kachestvennogo-besprovodnogo-mosta"},"modified":"2020-02-18T14:02:08","modified_gmt":"2020-02-18T11:02:08","slug":"chto-takoe-zona-frenelya-i-ccq-client-connection-quality-ili-fundamentalnye-faktory-kachestvennogo-besprovodnogo-mosta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/administrirovanie\/chto-takoe-zona-frenelya-i-ccq-client-connection-quality-ili-fundamentalnye-faktory-kachestvennogo-besprovodnogo-mosta","title":{"rendered":"Cos'\u00e8 la zona di Fresnel e il CCQ (Client Connection Quality) o fattori fondamentali per un ponte wireless di qualit\u00e0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h3>Contenuto<\/h3>\n<p>\n<noindex><a rel=\"nofollow\" href=\"#1\">CCQ \u2014 che cos'\u00e8?<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"#2\">Tre fattori principali che influenzano la qualit\u00e0 del CCQ.<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"#3\">Cos'\u00e8 la zona di Fresnel?<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"#4\">Come calcolare la zona di Fresnel?<\/a><\/noindex><\/p>\n<p>In questo articolo voglio discutere dei fattori fondamentali per costruire un ponte wireless di qualit\u00e0, poich\u00e9 molti 'network builder' ritengono sufficiente acquistare buone attrezzature di rete, installarle e ottenere il 100% delle prestazioni \u2014 cosa che non riesce a tutti.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" name=\"1\"><\/a><\/noindex><\/p>\n<h2>CCQ \u2014 che cos'\u00e8?<\/h2>\n<p>\nCCQ (Client Connection Quality) si traduce dall'inglese come 'qualit\u00e0 della connessione del cliente' \u2014 che sostanzialmente mostra la relazione percentuale tra la capacit\u00e0 teoricamente possibile e quella realmente attuale del canale, in altre parole, la percentuale di capacit\u00e0 raggiunta rispetto a quella massimamente possibile su specifiche attrezzature.<\/p>\n<p>Ad esempio, se si utilizza attrezzatura con una capacit\u00e0 massima di 200 Mbps, ma attualmente si ottiene 100 Mbps su quel canale \u2014 in tal caso, il CCQ \u00e8 uguale al 50%<\/p>\n<p>Nell'attrezzatura di rete <noindex><a rel=\"nofollow\" href=\"http:\/\/lanmarket.ua\/brends\/mikrotik\/\">Mikrotik<\/a><\/noindex> e <noindex><a rel=\"nofollow\" href=\"http:\/\/lanmarket.ua\/brends\/ubiquiti-networks\/\">Ubiquiti<\/a><\/noindex> ci sono due indicatori distinti<br \/>\nTx. CCQ (Trasmetti CCQ) \u2014 velocit\u00e0 di trasmissione dei dati.<br \/>\nRx. CCQ (Ricevi CCQ) \u2014 velocit\u00e0 di ricezione dei dati.<\/p>\n<p><img decoding=\"async\" alt=\"Cos&#039;\u00e8 la zona di Fresnel e il CCQ (Client Connection Quality) o fattori fondamentali per un ponte wireless di qualit\u00e0\" src=\"\/wp-content\/uploads\/2019\/12\/9910fcca9d355316644e7402c1075c0b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"2\"><\/a><\/noindex><\/p>\n<h2>Tre fattori principali che influenzano la qualit\u00e0 del CCQ<\/h2>\n<p>\n<b>1. Allineamento delle due antenne.<\/b> Nel caso di un ponte wireless \"punto-punto\", \u00e8 chiaro che le antenne devono puntare l'una verso l'altra il pi\u00f9 precisamente possibile, \"occhi negli occhi\".<\/p>\n<p>Se \u00e8 necessario un ponte wi-fi \"punto-multipunto\", bisogna pianificare l'intera architettura dalla antenna settoriale del fornitore alle antenne dei clienti, affinch\u00e9 si intersechino nel modo pi\u00f9 preciso possibile.<\/p>\n<p><b>2. Presenza di rumore nel canale.<\/b> Prima di decidere la frequenza del ponte wi-fi, \u00e8 fondamentale controllare ogni frequenza per la presenza di rumore e, sulla base di questo, fermarsi su una frequenza meno congestionata.<br \/>\n<noindex><a rel=\"nofollow\" name=\"3\"><\/a><\/noindex><br \/>\n<b>3. Zona di Fresnel.<\/b><\/p>\n<h2>Cos'\u00e8 la zona di Fresnel?<\/h2>\n<p>\nLa zona di Fresnel \u00e8 il volume del canale radiofonico tra due antenne.<\/p>\n<p><img decoding=\"async\" alt=\"Cos&#039;\u00e8 la zona di Fresnel e il CCQ (Client Connection Quality) o fattori fondamentali per un ponte wireless di qualit\u00e0\" src=\"\/wp-content\/uploads\/2019\/12\/dd9bd5cbb5f07626a66c6dd940cfee79.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nIl massimo volume del canale si trova nel punto centrale tra le due antenne. <\/p>\n<p>Per un segnale di massima qualit\u00e0, \u00e8 necessario scegliere la zona pi\u00f9 pulita, sia da ostacoli fisici che da onde radio (come gi\u00e0 menzionato nel secondo punto).<br \/>\n<noindex><a rel=\"nofollow\" name=\"4\"><\/a><\/noindex><\/p>\n<h2>Come calcolare la zona di Fresnel?<\/h2>\n<p>\n<b>Formula per il calcolo della zona di Fresnel nel suo punto centrale:<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Cos&#039;\u00e8 la zona di Fresnel e il CCQ (Client Connection Quality) o fattori fondamentali per un ponte wireless di qualit\u00e0\" src=\"\/wp-content\/uploads\/2019\/12\/d497f3b91ee4c4309c6aade984ac2538.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nD \u2014 distanza (km)<br \/>\nf \u2014 frequenza (GHz)<\/p>\n<p><b>La formula per calcolare la zona di Fresnel in qualsiasi punto, ad esempio in corrispondenza di un ostacolo:<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Cos&#039;\u00e8 la zona di Fresnel e il CCQ (Client Connection Quality) o fattori fondamentali per un ponte wireless di qualit\u00e0\" src=\"\/wp-content\/uploads\/2019\/12\/711b65dcf74ea991eebe937777d3c460.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nf \u2014 frequenza (GHz)<br \/>\nD1 \u2014 distanza fino al punto di calcolo desiderato, dalla prima antenna (km)<br \/>\nD2 \u2014 distanza fino al punto di calcolo desiderato, dalla seconda antenna (km)<\/p>\n<p>Lavorando bene su questi tre fattori, alla fine otterrete un ponte wireless stabile, con la massima velocit\u00e0 di trasmissione dei dati possibile.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/480964\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 CCQ \u2014 \u0447\u0442\u043e \u044d\u0442\u043e? \u0422\u0440\u0438 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0445 \u0444\u0430\u043a\u0442\u043e\u0440\u0430 \u0432\u043b\u0438\u044f\u044e\u0449\u0438\u0435 \u043d\u0430 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e CCQ. \u0417\u043e\u043d\u0430 \u0424\u0440\u0435\u043d\u0435\u043b\u044f \u2014 \u0447\u0442\u043e \u044d\u0442\u043e? \u041a\u0430\u043a \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0437\u043e\u043d\u0443 \u0424\u0440\u0435\u043d\u0435\u043b\u044f? \u0412 \u0434\u0430\u043d\u043d\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0445\u043e\u0447\u0443 \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043e \u0444\u0443\u043d\u0434\u0430\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0445 \u0444\u0430\u043a\u0442\u043e\u0440\u0430\u0445 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0433\u043e \u043c\u043e\u0441\u0442\u0430, \u0442\u0430\u043a \u043a\u0430\u043a \u043c\u043d\u043e\u0433\u0438\u0435 \u00ab\u0441\u0435\u0442\u0435-\u0441\u0442\u0440\u043e\u0438\u0442\u0435\u043b\u0438\u00bb \u0441\u0447\u0438\u0442\u0430\u044e\u0442, \u0447\u0442\u043e \u0432\u043f\u043e\u043b\u043d\u0435 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0431\u0443\u0434\u0435\u0442 \u043a\u0443\u043f\u0438\u0442\u044c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0441\u0435\u0442\u0435\u0432\u043e\u0435 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435, \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c 100% \u043e\u0442\u0434\u0430\u0447\u0443 \u043e\u0442 \u043d\u0438\u0445 \u2014 \u0447\u0442\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-54163","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 CCQ \u2014 \u0447\u0442\u043e \u044d\u0442\u043e? 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