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    A 2.4G WiFi Protocol Standard

    Post lub sij hawm: May-06-2022

    2.4G WiFi ua haujlwm hauv 2.4GHz band nrog kev ua haujlwm zaus ntawm 2400 ~ 2483.5MHz.Cov qauv tseem ceeb ua raws yog IEEE802.11b / g / n tus qauv tsim los ntawm IEEE (Association of Electrical and Electronics Engineers).Nov yog cov qauv no. hauv kev nthuav dav:

    • IEEE 802.11 yog tus qauv wireless LAN qub tsim los ntawm IEEE. Nws yog tsuas yog siv los daws cov wireless nkag mus rau cov neeg siv thiab cov neeg siv khoom siv hauv chaw ua haujlwm LAN thiab tsev kawm ntawv network. Kev pabcuam tsuas yog txwv rau kev nkag mus rau cov ntaub ntawv, nrog rau qhov siab tshaj plaws ntawm 2Mb / s.Qhov kev siv thev naus laus zis no yog outdated vim IEEE802.11 tsis txaus nyob rau hauv ob qho tib si tus nqi thiab kis tau tus mob.
    • Tus qauv IEEE802.11b, tseem hu ua wireless fidelity thev naus laus zis, siv thoob ntiaj teb tswj hwm 2.4GHz dawb zaus band rau kev nthuav dav ncaj qha, nrog 83.5MHz dav thiab qhov siab tshaj plaws cov ntaub ntawv kis tau tus mob ntawm 11Mbps.Qhov siab tshaj plaws kis tau tus mob yog 300 meters sab nraum zoov thiab 100 meters sab hauv tsev yam tsis muaj kev nkag mus rau sab hauv tsev, uas yog siv wireless kis raws tu qauv tshaj plaws tam sim no.
    • IEEE 802.11g yog tus qauv hybrid uas yoog raws li tus qauv 802.11b ib txwm muaj thiab muab cov ntaub ntawv hloov pauv ntawm 11Mbps ib thib ob ntawm 2.4GHz.Nws siv cov thev naus laus zis zoo xws li kev sib txuas ntawm dual-channel, uas txhim kho lub wireless channel kis bandwidth mus rau 108Mbps thiab tuaj yeem ua tau. muab qhov tseeb TCP / IP throughput ntawm 80 thiab 90Mbps.
    • IEEE802.11n siv MIMO (multi-in thiab multi-out) thiab OFDM (orthogonal zaus division multiplexing) thev naus laus zis, uas tuaj yeem txhim kho tus nqi sib kis ntawm WLAN los ntawm 54Mbps tam sim no muab los ntawm 802.11a thiab 802.11g rau 108Mbps, txawm tias mus txog 60Mbps. , thiab tuaj yeem txhawb nqa lub suab zoo thiab kev sib kis video.

    Kev sib piv ntawm 802.11b/g/n cov qauv

     

    tiam thib ob

    tiam peb

    tiam plaub

    txheem

    IEEE 802.11b

    IEEE 802.11g

    IEEE 802.11n

    txheej txheem modulation

    CCK

    BPSK, QP SK, 160AM, 64 QAM, DBPSK, DQPSK,

    BPSK, QPSK, 160AM, 64 QAM

    Hom encoding

    DSSS

    OFDM, DSSS

    MIMO-OFDM

    ceev

    11 Mbps

    54Mbps ua

    600 Mbps

    channel bandwidth

    22 MHz

    20 MHz

    20, 40 MHz

    Hnub pom zoo

    Xyoo 1999

    Xyoo 2003

    Xyoo 2009

    yam ntxwv

    Tsawg nqi, mainstream

    qauv, technology

    thiab cov khoom yog

    laus

    Tsawg tus txheeb ze zog

    noj, ntev

    kis tau tus mob nrug, muaj zog

    kev quab yuam, me me

    kev pab them nqi, tus nqi siab

    Down-compatible nrog

    11b / g thaum ua haujlwm ntawm

    2.4g ua

    Shenzhen HDV Photoelectron Technology Ltd. yog tus kws tshaj lijONU/ ONT cov chaw tsim khoom tseem yog kev sib txuas lus ntseONUmodule chaw tsim khoom, peb lub tuam txhab tam sim no muag ntau yam khoom siv sib txuas lus sab sauv thiab qis, xws li, Fiber Media Converter, Ethernethloov, OLTkhoom siv,ONUkhoom siv thiab lwm yam. Yog tias koj xav paub ntau ntxiv txog kev sib txuas lus thev naus laus zis, txais tos hu rau peb txhua lub sijhawm.



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