I-2.4G WiFi isebenza kwibhendi ye-2.4GHz kunye noluhlu lwefrikhwensi yokusebenza ye-2400 ~ 2483.5MHz. Umgangatho ongundoqo olandelwayo ngumgangatho we-IEEE802.11b/g/n omiselwe yi-IEEE (I-Association of Electrical and Electronics Engineers) .Nazi ezi nkqubo ngokweenkcukacha:
- IEEE802.11 ngumgangatho weLAN engenangcingo owayilwa yi-IEEE. Isetyenziselwa ikakhulu ukusombulula ukufikelela ngaphandle kwamacingo kubasebenzisi kunye neetheminali zabasebenzisi kwi-ofisi yeLAN kunye neenethiwekhi zekhampasi. Inkonzo inqunyelwe kakhulu ukufikelela kwedatha, kunye nesantya esiphezulu se-2Mb / s.Le teknoloji iphelelwe yisikhathi ngenxa yokuba i-IEEE802.11 ayanelanga kuzo zombini izinga kunye nomgama wokudlulisa.
- Umgangatho we-IEEE802.11b, owaziwa nangokuthi iteknoloji yokuthembeka engenazintambo, isebenzisa i-2.4GHz ibhendi yefrikhwensi elawulwa ngamazwe ngamazwe yokwandisa ulandelelwano oluthe ngqo, kunye nobubanzi be-83.5MHz kunye nesantya esiphezulu sokudluliselwa kwedatha ye-11Mbps. iimitha ngaphakathi endlini ngaphandle kokufikeleleka ngaphakathi, eyona ndlela isetyenziswayo yokuhambisa i-wireless protocol ngoku.
- IEEE802.11g ngumgangatho odibeneyo ohambelana nomgangatho we-802.11b wendabuko kwaye unikezela amazinga okudluliselwa kwedatha ye-11Mbps ngomzuzwana kwi-2.4GHz.Isebenzisa ubugcisa bokuphucula njenge-dual-channel bundling, ephucula i-bandwidth ye-wireless ye-wireless ukuya kwi-108Mbps kwaye ingakwazi. bonelela nge-TCP / IP yokwenene phakathi kwe-80 kunye ne-90Mbps.
- I-IEEE802.11n isebenzisa i-MIMO (i-multi-in kunye ne-multi-out) kunye ne-OFDM (i-orthogonal frequency division multiplexing) iteknoloji, enokuphucula izinga lokudluliselwa kwe-WLAN ukusuka kwi-54Mbps yangoku enikezelwa yi-802.11a kunye ne-802.11g ukuya kwi-108Mbps, ukuya kuthi ga kwi-600Mbps. , kwaye inokuxhasa ukuhanjiswa kwelizwi kunye nevidiyo ekumgangatho ophezulu.
| Ukuthelekiswa kwe-802.11b/g/n criteria | |||
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| isizukulwana sesibini | isizukulwana sesithathu | Isizukulwana sesine |
| umgangatho | IEEE802.11b | IEEE802.11g | IEEE 802.11n |
| ubuchule bokumodareyitha | CCK | BPSK,QP SK,160AM,64QAM,DBPSK,DQPSK, | BPSK,QPSK,160AM, 64QAM |
| Uhlobo lwekhowudi | I-DSSS | OFDM, DSSS | MIMO-OFDM |
| isantya | 11Mbps | 54Mbps | 600Mbps |
| umjelo webhanwidth | 22MHz | 20MHz | 20,40MHz |
| Umhla wokuvunywa | 1999 | 2003 | 2009 |
| uphawu | Iindleko eziphantsi, eziqhelekileyo imigangatho, iteknoloji kunye neemveliso oqolileyo | Amandla asezantsi ukusetyenziswa, ixesha elide umgama wothumelo, womelele amandla okungena, amancinci ukhuseleko, izinga eliphezulu | Phantsi-iyahambelana ne 11b / g xa usebenza e 2.4G |
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