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    2.4Umgangatho weProtocol yeGWiFi

    Ixesha lokuposa: Apr-04-2023

    I-2.4GWiFi isebenza kwi-frequency band ye-2.4GHz, kunye ne-frequency range ye-2400-2483.5MHz. Umgangatho ophambili olandelwayo ngumgangatho we-IEEE802.11b/g/n ophuhliswe liZiko leeNjineli zoMbane kunye nezoMbane (IEEE). Ngezantsi, siza kubonelela ngentshayelelo eneenkcukacha kule migangatho:

    • IEEE802.11 ngumgangatho wothungelwano lwengingqi olungenazingcingo olwaphuhliswa ekuqaleni yi-IEEE, ubukhulu becala lusetyenziselwa ukusombulula ufikelelo ngaphandle kwamacingo kubasebenzisi kunye neetheminali zabasebenzisi kwiiofisi kunye neenethiwekhi zekhampasi. Ishishini lilinganiselwe kakhulu ekufikeleleni kwedatha, kwaye isantya esiphezulu sinokufikelela kuphela kwi-2Mb / s. Ngenxa yokungakwazi kwe-IEEE 802.11 ukuhlangabezana neemfuno zabantu malunga nesantya kunye nomgama wothumelo, obu bugcisa buphelelwe lixesha.

    • Umgangatho we-IEEE802.11b, okwaziwa ngokuba bubuchwepheshe bokuthembeka obungenazingcingo, usebenzisa i-2.4GHz free frequency band eyaziwayo kumazwe ngamazwe kulandelelwano oluthe ngqo olusasazekileyo lwe-spectrum, kunye ne-bandwidth ye-83.5MHz kunye neqondo eliphezulu logqithiso lwedatha ye-11Mbps. Uluhlu lothumelo ngaphandle kokusasazwa komgca ukuya kuthi ga kwi-300 yeemitha ngaphandle kwaye ukuya kuthi ga kwi-100 yeemitha ngaphakathi ngaphandle kwemiqobo, nto leyo eyenza ukuba ibe yeyona ndlela iqhelekileyo yokuhambisa i-wireless protocol namhlanje.

    • I-IEEE802.11g ngumgangatho we-hybrid olungelelanisa umgangatho we-802.11b wendabuko kwaye unikezela ngezinga lokudluliselwa kwedatha ye-11Mbps ngesekhondi kwi-2.4GHz frequency. Yamkela ubugcisa obuphuculweyo obufana nokudityaniswa kweetshaneli ezimbini, okwandisa i-bandwidth yesitishi esingenazingcingo ukuya kwi-108Mbps kwaye inokubonelela nge-TCP/IP yokwenene yokuphuma kwe-80 ukuya kwi-90Mbps.

    • IEEE802.11n yamkela iMIMO (Multiple In Multiple Out) kunye neOFDM (Orthogonal Frequency Division Multiplexing) ubuchwepheshe, obunokunyusa izinga lothumelo lwe-WLAN ukusuka kwi-54Mbps ebonelelwa yi-802.11a yangoku kunye ne-802.11g ukuya kwi-108Mbps, okanye i-tops ye-Even 60bM, okanye i-even-M inokuxhasa ukuhanjiswa kwelizwi kunye nevidiyo ekumgangatho ophezulu.

    Ukuthelekiswa kwemigangatho ye-802.11b/g/n

     

    isizukulwana sesibini

    isizukulwana sesithathu

    Isizukulwana sesine

    umgangatho

    IEEE802.11b

    IEEE802.11g

    IEEE 802.11n

    ubuchule bokumodareyitha

    CCK

    BPSK,QPSK,160AM,

    64QAM,

    DBPSK,DQPSK,

    BPSK,QPSK,160AM, 64QAM

    Uhlobo lwekhowudi

    I-DSSS

    OFDM, DSSS

    MIMO-OFDM

    isantya

    11Mbps

    54Mbps

    600Mbps

    Ibhanwidth yesijelo

    22MHz

    20MHz

    20,40MHz

     

    Umhla wokuvunywa

     

    1999

    2003

    2009

    uphawu

    Ixabiso eliphantsi,

    eqhelekileyo

    imigangatho,

    iteknoloji eqolileyo

    kunye neemveliso

     Amandla aphantsi ngokwentelekisoukusetyenziswa,usulelo olude

    umgama,

    ukungena ngamandla,

    ukukhanya okuncinci,

    kunye nesantya esiphezulu

     

     Xa usebenza e

    2.4G, inokuba

    iyahambelana

    ezantsi

    kunye ne-11b/g

     

    I-Shenzhen Haidiwei Optoelectronics ngumvelisi oqeqeshiweyo weI-ONUizixhobo zekati optical kunye nonxibelelwano olukrelekreleI-ONUimodyuli yekati yokubona. Inkampani yethu ngoku ithengisa izixhobo ezahlukeneyo zonxibelelwano ezinonxibelelwano oluphezulu nasezantsi, olunje nge-fiber optic transceivers, izitshixo ze-Ethernet,OLTizixhobo zekati zamehlo,I-ONUizixhobo zekati optical, njalo njalo. Ukuba ungathanda ukufunda ngakumbi malunga nolwazi lwetekhnoloji yonxibelelwano, nceda uzive ukhululekile ukuqhagamshelana nenkampani yethu.



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