2.4G WiFi yana aiki a cikin rukunin 2.4GHz tare da kewayon mitar aiki na 2400 ~ 2483.5MHz. Babban ma'aunin da ya biyo baya shine IEEE802.11b/g/n misali wanda IEEE (Ƙungiyar Injiniyoyin Lantarki da Lantarki) suka saita.Ga waɗannan sharuɗɗan daki-daki:
- IEEE802.11 mizanin LAN mara waya ne wanda IEEE ya ƙirƙira ta asali. Ana amfani da shi musamman don magance hanyar shiga mara waya ta masu amfani da tashoshi masu amfani a cikin ofishin LAN da cibiyoyin sadarwa. Sabis yana iyakance ga samun damar bayanai, tare da matsakaicin adadin 2Mb / s. Wannan fasaha ta tsufa saboda IEEE802.11 bai isa ba a duka farashi da nisan watsawa.
- Ma'auni na IEEE802.11b, wanda kuma aka sani da fasahar aminci mara waya, yana amfani da madaidaicin mitar mitar 2.4GHz da aka tsara ta duniya don faɗaɗa jeri kai tsaye, tare da faɗin 83.5MHz da matsakaicin adadin watsa bayanai na 11Mbps. Matsakaicin kewayon watsawa shine mita 300 a waje da 100 mita a cikin gida ba tare da shiga cikin gida ba, wanda shine ka'idar watsa mara waya da aka fi amfani dashi a yanzu.
- IEEE802.11g misali ne na matasan da ya dace da daidaitattun 802.11b na gargajiya kuma yana ba da ƙimar canja wurin bayanai na 11Mbps a sakan daya a 2.4GHz. Yana amfani da fasahohin haɓakawa irin su haɗar tashoshi biyu, wanda ke inganta bandwidth watsa tashar mara waya zuwa 108Mbps kuma zai iya samar da ainihin kayan aikin TCP / IP tsakanin 80 da 90Mbps.
- IEEE802.11n yana amfani da MIMO (multi-in and multi-out) da kuma OFDM (orthogonal mita division multiplexing) fasaha, wanda zai iya inganta yawan watsawa na WLAN daga 54Mbps na yanzu da 802.11a da 802.11g zuwa 108Mbps ke bayarwa, har zuwa 600Mbps. , kuma zai iya goyan bayan ingantaccen murya da watsa bidiyo.
| Kwatanta ma'auni na 802.11b/g/n | |||
|
| ƙarni na biyu | tsara na uku | Karni na hudu |
| misali | IEEE802.11b | IEEE802.11g | IEEE 802.11n |
| dabarar daidaitawa | CCK | BPSK, QP SK, 160AM, 64QAM, DBPSK, DQPSK, | BPSK,QPSK,160AM, 64QAM |
| Nau'in rikodi | DSS | OFDM, DSSS | MIMO-OFDM |
| gudun | 11 Mbps | 54Mbps | 600Mbps |
| bandwidth tashar | 22 MHz | 20 MHz | 20,40MHz |
| Ranar amincewa | 1999 | 2003 | 2009 |
| hali | Ƙananan farashi, na yau da kullun ma'auni, fasaha kuma samfurori ne balagagge | Ƙananan ikon dangi amfani, dogo nisa watsawa, mai ƙarfi karfin shiga, karami ɗaukar hoto, babban ƙimar | Down-jituwa da 11b / g lokacin aiki a 2.4G |
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