Nqe Lus Nug: 802.11 yog dab tsi? Cov kev cai lij choj twg yuav tsum siv kuv cov cuab yeej siv?
Teb:
802.11 yog ib co qauv ntawm kev siv technology rau wireless network. Cov qauv no yog txiav txim los ntawm IEEE (Lub Tsev Kawm Ntawv Hluav Taws Xob thiab Hluav Taws Xob), thiab lawv tswj hwm qhov sib txawv ntawm cov wireless devices raug tsim thiab seb lawv sib txuas lus li cas.
Koj yuav pom 802.11 tau hais thaum koj tab tom nrhiav yuav khoom siv wireless lossis ib qho khoom siv hluav taws xob. Thaum tshawb nrhiav seb lub vas sab twg, piv txwv li, koj tuaj yeem pom qee cov lus tshaj tawm tias sib txuas lus ntawm "ultra-high" 802.11 n speeds (qhov tseeb, Apple touts nws siv 802.11n kev siv tshuab hauv nws lub computer thiab cov khoom siv tshiab). Tus qauv 802.11 tseem hais txog kev piav qhia ntawm wireless networks lawv tus kheej; Piv txwv, yog tias koj xav mus txuas rau tsoomfwv wireless chaw nres tsheb, koj tuaj yeem raug qhia tias nws yog 802.11 g network.
Cov tsiaj ntawv txhais li cas?
Tsab ntawv tom qab "802.11" qhia tias qhov kev hloov kho rau tus qauv 802.11 thawj zaug. Wireless technology rau cov neeg siv / cov pej xeem muaj kev loj hlob los ntawm 802.11a txog 802.11b txog 802.11g rau, feem ntau tsis ntev los no, 802.11n . (Muaj, lwm cov ntawv, "c" thiab "m," piv txwv li, kuj muaj nyob hauv 802.11 spectrum, tab sis lawv tsuas yog qhov tseem ceeb rau IT engineers lossis lwm pawg neeg tshwj xeeb.)
Yog tias tsis tau txais ntau yam kev sib txawv ntawm 802.11a, b, g, thiab n tes hauj lwm, peb tsuas tuaj yeem hais xwb tias txhua tus tshiab version ntawm 802.11 muaj kev ua haujlwm zoo dua hauv wireless, piv rau cov ua ntej versions, hauv qab no:
- cov ntaub ntawv tus nqi : qhov siab tshaj plaws cov ntaub ntawv hloov ceev (piv txwv li, cov ntaub ntawv ceev ceev tuaj yeem mus hauv lub network)
- ntau yam : qhov kev deb ntawm cov wireless signals tuaj yeem ncav cuag los yog broad broad cheeb tsam lub xov tooj hluav taws xob npog (piv txwv li, deb npaum li cas koj tuaj yeem los ntawm qhov wireless signal source thiab tseem muaj kev txhim khu kev qha)
802.11n (tseem hu ua "Wireless-N"), yog qhov kev sib txuas lus wireless tshaj plaws, muab cov ntaub ntawv ntau tshaj plaws tshaj plaws hnub no thiab cov teeb liab zoo dua li cov kev yees ua ntej. Qhov tseeb, pom tau ceev ceev rau cov khoom 802.11n 7 lub sij hawm sai dua 802.11g; ntawm 300 los yog ntau tshaj Mbps (megabits ib ob) nyob hauv kev pab cuam tiag tiag, 802.11n yog thawj wireless kev cai sib tw los ua rau sib tw 100 Mbps Ethernet setups.
Cov khoom siv Wireless-N kuj tsim los ua kom zoo dua ntawm qhov siab dua, kom lub laptop thiaj li yuav tau 300 tawm ntawm lub npav wireless taw tes thiab tseem ceev tias cov ntaub ntawv xa mus. Ntawm qhov sib txawv, nrog rau cov kev cai loj zog, koj cov ntaub ntawv ceev thiab qhov zoo sib xws yuav tsum tsis muaj zog thaum koj nyob ntawd nyob deb ntawm qhov wireless point.
Li ntawd, vim li cas thiaj tsis & siv t txhua tus siv cov khoom siv Wireless-N?
Nws tau siv xya xyoo kom txog thaum 802.11n kev sib kho tau raug pom zoo los ntawm IEEE thaum lub Cuaj Hlis xyoo 2009. Thaum cov xya xyoo thaum tau ua haujlwm, tseem muaj ntau yam "pre-n" thiab "draft n" wireless products , tab sis lawv tended tsis ua hauj lwm zoo nrog lwm cov kab mob wireless lossis txawm tias lwm yam khoom siv ua ntej 802.11n.
Kuv yuav tsum yuav ib lub Wireless-N network daim npav / kev xa khoom / lub tshuab computer, thiab lwm yam?
Tam sim no hais tias 802.11n tau raug pom zoo lawm - thiab vim tias kev lag luam wireless pawg zoo li Wi-Fi Alliance tau thawb rau kev sib tw nruab nrab ntawm 802.11n thiab tshaj 802.11 khoom - qhov kev pheej hmoo ntawm kev yuav khoom uas tsis muaj peev xwm sib txuas lus nrog lwm tus los yog nrog kho vajtse tau raug txo kom tsawg.
Cov kev pabcuam kev nce siab ntawm 802.11n yog qhov kev pom zoo, tabsis nco ntsoov cov nram qab no cov lus qhia / cov lus qhia thaum txiav txim seb puas yuav lo nrog 802.11g feem ntau siv lossis kev nqis peev ntawm 802.11n tam sim no :
- Kev ua haujlwm hauv Network yuav loj tshaj thaum txhua tus ntawm cov khoom siv nyob rau hauv lub wireless network siv 802.11n technology. Ntawm qhov ntxeev sab, yog tias ib qho kev siv cov laus siv 802.11g los yog 802.11b txuas mus rau koj tus 802.11n-raws router, qhov ceev thiab cov ntaub ntawv ntawm tag nrho cov khoom siv hauv lub network yuav txo. Ib txoj hauv kev los ntawm qhov teeb meem no rau koj lub tsev wireless network yog kom tau txais dab tsi hu ua dual-band router los yog point point. Qhov no yuav tso cai rau cov laus kom dhau ib lub xov tooj cua (2.4 GHz) thiab cov tshiab 802.11n-raws li siv lwm qhov qhab nia (5 GHz).
- Nrhiav tsis ntev los no cov khoom siv network, uas yuav muaj feem ntau dua ntawm kev sib haum xeeb rau kev pom zoo tso cai ntawm 802.11n. Yuav tsum tsis txhob "pre-n" lossis "draft n" cov khoom.
- Tsis tas li ntawd, saib xyuas cov khoom pov thawj los ntawm Wi-Fi Alliance (lawv yuav muaj qhov WI-Fi CERTIFIED logo ntawm lawv lub hnab), vim cov khoom no tau sim rau kev sib tw thiab kev sib koom tes.
- Thaum kawg, nco ntsoov tias feem ntau cov wireless hotspots thiab wireless networks feem ntau yuav raug khiav 802.11g los yog b. Txawm hais tias koj tus tshiab 802.11n ntaus ntawv rov qab-tshaj nrog (piv txwv li, tuaj yeem ua hauj lwm rau) cov tes hauj lwm no, nws yuav ua li ntawd thaum qeeb qeeb qeeb lossis g ceev.