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, nokwaziwa ngokuba bubuchwepheshe bokuthembeka obungenazingcingo, usebenzisa i-2.4GHz free frequency band eyaziwayo kumazwe ngamazwe kulandelelwano oluthe ngqo losasazo lwespectrum, 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 ubonelela 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 | |||
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| 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 |
| Umjelo webhendi | 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
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I-Shenzhen Haidiwei Optoelectronics ngumvelisi oqeqeshiweyo weI-ONUizixhobo zekati optical kunye nonxibelelwano olukrelekreleI-ONUimodyuli yekati yokubona.Inkampani yethu okwangoku ithengisa izixhobo ezahlukeneyo zonxibelelwano ezinonxibelelwano oluphezulu nasezantsi, olunje nge-fiber optic transceivers, izitshixo ze-Ethernet, izixhobo zekati ze-OLT,I-ONUizixhobo zekati optical, njalo njalo.Ukuba ungathanda ukufunda ngakumbi malunga nolwazi lwetekhnoloji yonxibelelwano, nceda uzive ukhululekile ukuqhagamshelana nenkampani yethu.