{"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\/da\/blog\/administrirovanie\/chto-takoe-zona-frenelya-i-ccq-client-connection-quality-ili-fundamentalnye-faktory-kachestvennogo-besprovodnogo-mosta","title":{"rendered":"Hvad er Fresnel-zonen og CCQ (Client Connection Quality) eller de fundamentale faktorer for et kvalitets tr\u00e5dl\u00f8st broforbindelse","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Indhold<\/h3>\n

\nCCQ \u2014 hvad er det?<\/a><\/noindex>
\nTre grundl\u00e6ggende faktorer, der p\u00e5virker kvaliteten af CCQ.<\/a><\/noindex>
\nFresnel-zone \u2014 hvad er det?<\/a><\/noindex>
\nHvordan beregner man Fresnel-zonen?<\/a><\/noindex><\/p>\n

I denne artikel vil jeg diskutere de grundl\u00e6ggende faktorer for opbygning af en kvalitets tr\u00e5dl\u00f8s bro, da mange 'netv\u00e6rksbyggere' mener, at det er tilstr\u00e6kkeligt at k\u00f8be kvalitets netv\u00e6rksudstyr, installere det og f\u00e5 100 % udbytte fra det \u2014 hvilket ikke altid lykkes for alle.
\n<\/a><\/noindex>
\n<\/a><\/noindex><\/p>\n

CCQ \u2014 hvad er det?<\/h2>\n

\nCCQ (Client Connection Quality) overs\u00e6ttes fra engelsk som 'kvalitet af klientforbindelse' \u2014 dette viser i princippet forholdet mellem det teoretisk mulige og faktisk nuv\u00e6rende b\u00e5ndbredde i kanalen, med andre ord procentdelen af opn\u00e5et b\u00e5ndbredde i forhold til maksimalt muligt p\u00e5 det specifikke udstyr.<\/p>\n

For eksempel, hvis du bruger udstyr med en maksimalt mulig b\u00e5ndbredde p\u00e5 200 Mb\/s, men faktisk har 100 Mb\/s i den nuv\u00e6rende kanal \u2014 s\u00e5 er CCQ lig med 50%.<\/p>\n

I netv\u00e6rksudstyr Mikrotik<\/a><\/noindex> og Ubiquiti<\/a><\/noindex> er der to separate indikatorer
\nTx. CCQ (Transmit CCQ) \u2014 dataoverf\u00f8rselshastighed.
\nRx. CCQ (Receive CCQ) \u2014 modtagelseshastighed.<\/p>\n

\"Hvad
\n<\/a><\/noindex><\/p>\n

Tre grundl\u00e6ggende faktorer, der p\u00e5virker kvaliteten af CCQ<\/h2>\n

\n1. Justering af de to antenner.<\/b> N\u00e5r det kommer til en 'point-to-point' tr\u00e5dl\u00f8s bro, er det klart, at antennerne skal pege direkte p\u00e5 hinanden s\u00e5 pr\u00e6cist som muligt, '\u00f8je til \u00f8je'.<\/p>\n

Hvis du har brug for en 'point-to-multipoint' wi-fi bro \u2014 s\u00e5 skal du f\u00f8rst planl\u00e6gge hele arkitekturen fra sektorantennen fra udbyderen til klientantennene, s\u00e5 de sk\u00e6rer hinanden s\u00e5 pr\u00e6cist som muligt.<\/p>\n

2. Tilstedev\u00e6relse af st\u00f8j i kanalen.<\/b> F\u00f8r du v\u00e6lger frekvensen for wi-fi broen, skal du s\u00f8rge for at tjekke hver frekvens for forekomst af st\u00f8j, og v\u00e6lge en mindre belastet frekvens baseret p\u00e5 denne kontrol.
\n<\/a><\/noindex>
\n3. Fresnel-zone.<\/b><\/p>\n

Fresnel-zone \u2014 hvad er det?<\/h2>\n

\nFresnel-zonen er volumen af radiob\u00f8lgekanalen mellem to antenner.<\/p>\n

\"Hvad
\n
\nDet maksimale volumen af kanalen ligger i det centrale punkt mellem de to antenner. <\/p>\n

For et maksimalt klart signal skal du v\u00e6lge det mest rene omr\u00e5de, b\u00e5de fra fysiske forhindringer og radiob\u00f8lger (som n\u00e6vnt i punkt to).
\n<\/a><\/noindex><\/p>\n

Hvordan beregner man Fresnel-zonen?<\/h2>\n

\nFormlen for beregning af Fresnel-zonen i dens centrale punkt:<\/b><\/p>\n

\"Hvad
\n
\nD \u2014 afstand (km)
\nf \u2014 frekvens (GHz)<\/p>\n

Formlen for beregning af Fresnel-zonen i enhver af dens punkter, f.eks. ved et forhindring:<\/b><\/p>\n

\"Hvad
\n
\nf \u2014 frekvens (GHz)
\nD1 \u2014 afstanden til det \u00f8nskede beregningspunkt fra den f\u00f8rste antenne (km)
\nD2 \u2014 afstanden til det \u00f8nskede beregningspunkt fra den anden antenne (km)<\/p>\n

Ved grundigt at arbejde med disse tre faktorer vil du i sidste ende opn\u00e5 en stabil tr\u00e5dl\u00f8s forbindelse med den maksimale mulige dataoverf\u00f8rselshastighed.
\n
Kilde: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 […]<\/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\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Hvad er Fresnel-zonen og CCQ (Client Connection Quality), eller de fundamentale faktorer for en kvalitets tr\u00e5dl\u00f8s forbindelse | ProHoster","description":"Hvad er CCQ? 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