{"id":626,"date":"2016-01-02T12:32:38","date_gmt":"2016-01-02T12:32:38","guid":{"rendered":"http:\/\/netplus.sk\/?p=626"},"modified":"2018-08-08T19:22:06","modified_gmt":"2018-08-08T19:22:06","slug":"buducnost-v-podobe-802-11ax","status":"publish","type":"post","link":"https:\/\/netplus.sk\/index.php\/2016\/01\/02\/buducnost-v-podobe-802-11ax\/","title":{"rendered":"Bud\u00facnos\u0165 v podobe 802.11ax ?"},"content":{"rendered":"<p style=\"text-align: justify;\">Ned\u00e1vno obehla svet fantastick\u00e1 spr\u00e1va o novom WiFi \u0161tandarde 802.11ax. M\u00e1 nadviaza\u0165 na s\u00fa\u010dastn\u00fa 802.11ac so \u0161tyrmi MIMO streamami, pri\u010dom v\u010faka pou\u017eitiu sch\u00e9my OFDA (Orthogonal frequency-division multiple access), kedy je kan\u00e1l rozdelen\u00fd na desiatky a\u017e stovky men\u0161\u00edch s mierne rozdielnou frekvenciou sa m\u00e1 zv\u00fd\u0161i\u0165 efektivita vyu\u017eitia a\u017e desa\u0165n\u00e1sobne. S\u00fa\u010dasn\u00fd \u0161tandard Wi-Fi 802.11ac pon\u00faka v r\u00e1mci frekvencie 5 GHz teoretick\u00fa priepustnos\u0165 a\u017e 1,3 Gb\/s, n\u00e1stupca 802.11ax by tak pon\u00fakal teoretick\u00e9 prenosov\u00e9 r\u00fdchlosti okolo 10 Gb\/s. Pri re\u00e1lnom nasaden\u00ed, ale treba o\u010dak\u00e1va\u0165 ni\u017e\u0161ie hodnoty, ktor\u00e9 s\u00fa odhadovan\u00e9 na \u0161tvorn\u00e1sobok s\u00fa\u010dasn\u00fdch re\u00e1lnych hodn\u00f4t 802.11ac. So \u0161tyrmi streamami by tak mohlo \u00eds\u0165 o r\u00fdchlosti v oblasti 2 a\u017e 3 Gb\/s.<\/p>\n<p style=\"text-align: justify;\">Nastal \u010das odstrihn\u00fa\u0165 posledn\u00e9 ethernetov\u00e9 k\u00e1ble? Asi nie, jednak s komer\u010dn\u00fdm nasaden\u00edm sa po\u010d\u00edta a\u017e okolo roku 2019, po druh\u00e9 ako dobre vieme, papier toho ve\u013ea znesie. Treba si uvedomi\u0165, \u017ee pri \u0161tyroch MIMO streamoch, spoj\u00edme 4 kan\u00e1ly, \u010d\u00edm zn\u00ed\u017eime po\u010det non-overlapping kan\u00e1lov na \u0161tvrtinu. Pri osamotenom AP to probl\u00e9m nie je, pri re\u00e1lnej implement\u00e1cii vo firme u\u017e v\u0161ak m\u00f4\u017eu nasta\u0165 probl\u00e9my s prekryt\u00edm a n\u00e1sledn\u00fdm ru\u0161en\u00edm. Okrem toho ke\u010f\u017ee je vzduch zdie\u013ean\u00e9 m\u00e9dium, na dosiahnutie spom\u00ednan\u00fdch r\u00fdchlost\u00ed, by u\u017e\u00edvate\u013e musel by\u0165 jedin\u00fd akt\u00edvny na danom AP, preto\u017ee s ka\u017ed\u00fdm \u010fa\u013e\u0161\u00edm klientom sa bude r\u00fdchlos\u0165 zni\u017eova\u0165.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ned\u00e1vno obehla svet fantastick\u00e1 spr\u00e1va o novom WiFi \u0161tandarde 802.11ax. M\u00e1 nadviaza\u0165 na s\u00fa\u010dastn\u00fa 802.11ac so \u0161t\u00fdrmi MIMO streamami, pri\u010dom v\u010faka pou\u017eitiu sch\u00e9my OFDA (Orthogonal frequency-division multiple access), kedy je kan\u00e1l rozdelen\u00fd na desiatky a\u017e stovky men\u0161\u00edch s mierne rozdielnou frekvenciou sa m\u00e1 zv\u00fd\u0161i\u0165 efektivita vyu\u017eitia a\u017e desa\u0165n\u00e1sobne.<\/p>\n","protected":false},"author":2,"featured_media":719,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-626","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky"],"_links":{"self":[{"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/posts\/626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/comments?post=626"}],"version-history":[{"count":9,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/posts\/626\/revisions"}],"predecessor-version":[{"id":730,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/posts\/626\/revisions\/730"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/media\/719"}],"wp:attachment":[{"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/media?parent=626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/categories?post=626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netplus.sk\/index.php\/wp-json\/wp\/v2\/tags?post=626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}