{"id":4280,"date":"2025-11-16T08:50:39","date_gmt":"2025-11-16T06:50:39","guid":{"rendered":"https:\/\/blog.3kgroup.ee:443\/?p=4280"},"modified":"2025-11-19T06:37:33","modified_gmt":"2025-11-19T04:37:33","slug":"wi-fi5-6-6-2-4-6-ghz","status":"publish","type":"post","link":"https:\/\/blog.3kgroup.ee:443\/?p=4280","title":{"rendered":"Wi-Fi5\/6\/7 2.4-6 GHz"},"content":{"rendered":"\n

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Millised on suuremad praktilised erinevused nende standardite vahel? Wi-Fi 6 (802.11ax) 2,4\/5 GHz standard toob sisse OFDMA modulatsiooni ja andmete multipleksimise, mis t\u00e4hendab, et mitu klienti saab \u00fchel ajahetkel \u00f5hus suhelda. See on v\u00e4ga oluline aspekt, sest Wi-Fis peab iga paketi saatmiseks (AP v\u00f5i klient) tavaliselt ootama, kuni eeter on vaba (kohustuslik CSMA\/CA algoritm). Seega v\u00f5tab see toiming aega ja on paljude \u00fcheaegsete klientide puhul ressursimahukas. Seega v\u00f5ib \u00f6elda, et teatud juhtudel on Wi-Fi 6 10\u00d7 kiirem juba oma protokollide t\u00f5ttu. \u00dcheaegne suhtlemine on v\u00f5imalik m\u00f5lemas suunas, seega kui klientidele on vaja saata kviteeringud, saab seda teha \u00fche paketina.<\/p>\n\n\n\n

Teine oluline Wi-Fi 6 aspekt on 2,4 GHz kasutus. Siiani oli see sagedus praktiliselt ainult Wi-Fi 4 standardi p\u00e4ralt, sest Wi-Fi 5 (802.11ac) on ainult 5 GHz standard. Tulemused on m\u00e4rgatavad eriti kodus ja kontoris: kui klient liigub 5 GHz pealt levi \u00e4\u00e4realal 2,4 GHz peale, on v\u00f5rk endiselt kasutatav, kui kanalisamm ja h\u00e4irefoon on sarnased \u2013 eramajades ja n\u00e4iteks plekist seintega ladudes on see sageli nii. N\u00e4iteks kui teil on mobiilis lubatud Wi-Fi Calling, kus k\u00f5ik k\u00f5ned ja SMS-id jne l\u00e4hevad \u00fcle Wi-Fi, mitte \u00f5ues oleva mobiiliv\u00f5rgu, siis ei m\u00e4rka te kuigi tihti, et k\u00f5ne toimub 2,4 GHz kanali peal, sest telefoni vajadused on k\u00f5ne ajal v\u00e4ikesed.<\/p>\n\n\n\n

H\u00e4id tehnilisi aspekte on veelgi: n\u00e4iteks s\u00fcmboli pikkuse t\u00f5stmine 12,8 mikrosekundini. Lisaks on GI t\u00f5stetud maksimaalselt 3,2 mikrosekundini. See t\u00f5stab oluliselt multipath\u2019i (mitme tee fadingu) taluvust ja parandab seega oluliselt siselevi kvaliteeti. Tihti ongi \u00e4\u00e4realade v\u00f5rgu reaalne l\u00e4bilaskvus kuni 10\u00d7 suurem kui Wi-Fi 5 puhul. Kui lisada siia veel laiad kanalid, on selline kvaliteeti parandav aspekt \u00fclioluline.<\/p>\n\n\n\n

Paranenud on ka energias\u00e4\u00e4st. TWT saab tegelikult h\u00e4\u00e4lestada p\u00e4evade peale, seega ei pea IoT-kliendid kogu aeg v\u00f5rgus p\u00fcsima ja nende akud p\u00fcsivad kauem elus. Tegelikult muutub ka tavalise mobiiltelefoni k\u00e4itumine, kui ta kodus v\u00f5i kontoris teeb k\u00f5ik oma toimingud (Wi-Fi Calling lubatud) \u00fcle Wi-Fi.<\/p>\n\n\n\n

Mis aga juhtub Wi-Fi 7 standardiga (2,4\/5\/6 GHz), mille kvaliteetne kasutuselev\u00f5tt on olnud v\u00e4ga aeglane? K\u00f5igepealt on selles standardis k\u00f5ik kolm sagedusriba; Euroopas on lubatud alumine 6 GHz-i, 500 MHz laiune spektriala. Teiseks kasutatakse k\u00f5iki sagedusi ja raadioid suhtlemiseks \u00fcheaegselt, seega tavap\u00e4rast r\u00e4ndlust enam 2,4 pealt 5 peale ja vastupidi ei ole tarvis \u2013 k\u00f5iki kanaleid saab kasutada \u00fcheaegselt ja isegi saata infot eri suundades (dupleks).<\/p>\n\n\n\n

Oluline aspekt on ka v\u00f5ime laialt kanalilt (n\u00e4iteks 320 MHz) osa spektrist kasutusest v\u00e4lja l\u00f5igata \u2013 channel puncturing. See v\u00f5imaldab laia kanalit edasi kasutada ka siis, kui osa sellest on h\u00e4iritud.<\/p>\n\n\n\n

Wi-Fi 7 puhul t\u00f6\u00f6tavad enamik seadmeid 2,4 ja 5 GHz peal \u00fcheaegselt. Eriti Euroopas on 5\/6 GHz \u00fcheaegne t\u00f6\u00f6 p\u00e4ris suur raadiotehnika disaini v\u00e4ljakutse. Ainsad lineaarsed Wi-Fi-seadmed on seni turul olnud Ruckus R670\/R750 klassi seadmed, millel v\u00f5ib isegi 5 GHz peal kahte kanalit kvaliteetselt korraga kasutada.<\/p>\n\n\n\n

\"ruckus
Ruckus R770 BeamFlex+ nutiantenn<\/figcaption><\/figure>\n\n\n\n

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Millised on suuremad praktilised erinevused nende standardite vahel? Wi-Fi 6 (802.11ax) 2,4\/5 GHz standard toob sisse OFDMA modulatsiooni ja andmete multipleksimise, mis t\u00e4hendab, et mitu klienti saab \u00fchel ajahetkel \u00f5hus […]<\/p>\n","protected":false},"author":1,"featured_media":4283,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29,37315940,33,8,22],"tags":[3,37303803],"class_list":["post-4280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3k-support-teenused","category-ruckus-3kgroup-ee-uudised","category-uudised","category-wi-fi-tehnoloogia","category-wi-fi-vorkude-disain","tag-802-11ax","tag-802-11be"],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/posts\/4280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4280"}],"version-history":[{"count":9,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/posts\/4280\/revisions"}],"predecessor-version":[{"id":4298,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/posts\/4280\/revisions\/4298"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=\/wp\/v2\/media\/4283"}],"wp:attachment":[{"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.3kgroup.ee:443\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}