Umbuzo: Yintoni i-802.11? Nguwuphi umgaqo-nkqubo ongenazintambo kufuneka iifowuni zam zisebenzise?
Impendulo:
I-802.11 iyimilinganiselo yeeteknoloji yezixhobo zonxibelelwano ezingenazintambo. Le mi gangatho ijongwa yi-IEEE (i-Institute of Electrical and Electronic Engineers), kwaye ilawulwa ngokuyinqobo ukuba iifowuni ezingafaniyo zenziwe njani kwaye zixubana njani.
Uza kubona i-802.11 ekhankanywe xa ukhangela ukuthenga i-device ene-wireless-piece okanye iqela le-hardware engenazintambo. Xa uphando malunga nantoni ye-netbook ukuyithenga, umzekelo, unokubona ezinye zipapashwa njengento yokuthetha nge-wireless kwi "ultra-high" 802.11 n ngesivinini (eqinisweni, i-Apple ichukumisa ukusebenzisa kwayo i-802.11n iteknoloji kwiikhompyutha zayo zakutsha kunye nezixhobo). Umgangatho we-802.11 uphinde ukhankanywe kwiinkcazo ezinxibelelwano ezingenazintambo ngokwawo; umzekelo, ukuba ufuna ukudibanisa kwi-hotspot yomntu ongenawo wonke umntu, unokuxelelwa ukuba yintanethi ye-802.11 g .
Zithini iileta?
Incwadi emva kwe "802.11" ibonisa ukulungiswa komgangatho wokuqala 802.11. I-teknoloji engenazintlu kubathengi / uluntu jikelele luqhubekile ukusuka ku- 802.11a ukuya kwi- 802.11b ukuya kuma- 802.11g ukuya kuthi, ngoku kutshanje, u- 802.11n . (Ewe, ezinye iileta, "c" kunye "m," umzekelo, nazo zikhona kwi-spectrum ye-802.11, kodwa zixhomekeke kuphela kwiinjineli ze-IT okanye namanye amaqela akhethekileyo abantu.)
Ngaphandle kokungena kwiincwadana ezicacileyo phakathi kwe-802.11a, b, g, kunye n amanethiwekhi, sinokwenza nje ukuba yonke into entsha ye-802.11 inikeze ukusebenza kwentsebenziswano engenazintambo ezingenazintambo, xa kuthelekiswa neenguqulelo zangaphambili, ngokwemiqathango ye:
- Isantya sedatha : ukukhawuleza kwexesha lokudlulisa idatha (oko kukuthi, ulwazi olunokukhawuleza lunokuhamba ngaphaya kwenethiwekhi engenazintambo)
- Uluhlu : umgama osayinayo ongenazintambo unokufikelela okanye indlela ebanzi ngayo imiqondiso engenazicwangciso (ngaphandle kokuthi ungaba kude kangakanani na umthombo wesignal wireless kwaye ugcine uxhulumano oluthembekileyo)
I-802.11n (eyaziwa nangokuthi "i-Wireless-N"), yokuba yinkqubo yokugqibela engenakwii-wireless, inikezela ngokukhawuleza kwinqanaba lexesha lamanje namhlanje kunye nezigcawu ezingcono zeteknoloji kunezobuchwepheshe bokuqala. Enyanisweni, ukubonakalisa ukukhawuleza kweemveliso ezingama-802.11n kuye kwaba ngamaxesha angama-7 ngokukhawuleza kunama-802.11g; kwi-300 okanye ngaphezulu iMps (i-megabits ngesibini) ekusebenziseni kwehlabathi lenene, i-802.11n ngumgaqo-nkqubo wokuqala ongenawaya kumngeni onzima.
Iimveliso ze-Wireless-N zenzelwe ukwenza ngcono kumgama omde, ukwenzela ukuba i-laptop ikwazi ukuba ngamamitha angama-300 ukusuka kwisibonakaliso sokungena kwi-wireless kwaye igcine isantya esiphezulu sokudluliselwa kwedatha. Ngokwahlukileyo, kunye neenkqubo zokudala, ukukhawuleza kwedatha kunye nokuxhunywa kwedatha kufana nokuba buthathaka xa ungekude nendawo yokungena kwi-wireless.
Ngoko kutheni & # 39; wonke umntu usebenzisa i-Wireless-N imikhiqizo?
Kwathatha iminyaka eyisixhenxe de kube ngu-802.11n umgaqo-nkqubo ogqityiweyo / ugqityiwe yi-IEEE ngoSeptemba ka-2009. Ngethuba leminyaka esixhenxe xa iprotocol yaqhubeka isetyenzisiwe, ezininzi iimveliso "zangaphambili" kunye ne "draft" ze-wireless zaziswa , kodwa bazama ukungahambi kakuhle kunye nezinye iiprotokholi ezingenazintambo okanye ezinye iimveliso ezingama-802.11n zangaphambili.
Ngaba ndimele ndithenge i-Wireless-N yomnatha wekhadi / indawo yokufikelela / ikhompyutha ephathekayo, njl.
Ngoku ukuba i-802.11n iye yavunyelwa - kwaye kuba amaqela oshishino angenazixhobo ezinjenge-Wi-Fi Alliance aqhubezela ukuhambelana phakathi kwama-802.11n kunye nama-802.11 angaphezulu kweemveliso-mngcipheko wokuthenga izixhobo ezingenakuqhagamshelana okanye kunye nabantu abadala I-hardware iyancitshiswe kakhulu.
Izinzuzo zokunyuka kwentsebenzo ka-802.11n ngokuqinisekileyo zifaneleke ukuba zibukeke, kodwa gcinani engqondweni kwezi zicathulo / izicwangciso ezilandelayo xa unquma ukuba unamathele kwi-protocol engama-802.11g okanye utyalomali kwi-802.11n ngoku :
- Ukusebenza kwenethiwekhi kuya kuba kunkulu xa nganye yezixhobo kwi-network wireless zisebenzisa i-802.11n iteknoloji. Kwiphepha le-flip, ukuba ifowuni endala isebenzisa i-802.11g okanye i-802.11b idibanisa kwi-router yakho e-802.11n, isivinini kunye nesantya sedatha kuzo zonke izixhobo kwinethwekhi ziya kuncipha. Enye indlela yokujikeleza le ngxaki kwi-network yakho engenazintambo ezingenazintambo ukufumana oko kubizwa ngokuba yi-roual-band router okanye indawo yokufikelela. Oku kuya kuvumela amadivaysi asebekhulile ukuba asebenze ngaphezu kwebhanti enye (2.4 GHz) kunye namadivayisi angaphantsi kwama-802.11n asetyenzise enye i-band frequency band (5 GHz).
- Khangela iisetyenzisi zethungelwano ezisanda kutshitshiswa, eziya kuba neendlela ezininzi zokuhambelana nomgangatho ovunyiweyo we-802.11n. Ngokuqinisekileyo gwema "phambili-n" okanye "imveliso ye-n".
- Qaphela kwakhona iimveliso eziqinisekisiweyo nge-Wi-Fi Alliance (ziya kuba ne logo ye-Wi-Fi CERTIFIED kwi-embokheni yabo), njengoko ezi mveliso zivavanyelwa ukuhambelana nokusebenzisana.
- Ekugqibeleni, gcinani engqondweni ukuba ezininzi iindawo zokuhlala ezingenazintambo kunye nabanxibelelwano abangenazintambo ngokubanzi banakho ukuqhuba i-802.11g okanye b. Nangona idivayisi yakho entsha ye-802.11n ihambelanayo ngasemva (oko kukuthi, isebenze) ngala manxibelelwano, kuya kwenza njalo kwisantya esicothayo.