802.11 (mararka qaarkood loo yaqaan 802.11x, laakiin aan ahayn 802.11X) waa magaca guud ee qoysaska heerarka shabakadaha wireless ee la xiriira Wi-Fi .
Nidaamka lambarinta ee 802.11 wuxuu ka yimid Machadka Abaabulayaasha Korontada iyo Itaaliyaasha (IEEE), oo isticmaalaya "802" magaciisu yahay guddi heerarka xiriirinta oo ay ku jiraan Ethernet (IEEE 802.3). "11" waxaa loola jeedaa kooxaha shaqada ee shabakadaha wirelesska (WLANs) gudahooda 802 gudahood.
Istaandarada IEEE 802.11 waxay qeexayaan xeerarka gaarka ah ee isgaarsiinta WLAN. Aqoonta ugu fiican ee heerarkaas waxaa ka mid ah 802.11g , 802.11n iyo 802.11ac .
Heerka 802.11 ee ugu horeeya
802.11 (iyada oo aan jirin warqad dheeraad ah) wuxuu ahaa asalka asalka ah ee qoyskan, oo la ansixiyey 1997. 802.11 waxay aasaaseen isgaadhsiin shabakadeed oo dhexdhexaad ah oo ah nidaamka caadiga ah ee Ethernet. Noqoshada tiknoolijiyada kowaad, 802.11 waxay leedahay xadidaad halis ah oo ka hortagtay inay ka muuqato badeecadaha ganacsiga - heerka xogta, tusaale ahaan, 1-2 Mbps . 802.11 si dhaqso ah ayuu u fiicnaaday, loona sameeyay laba sano gudahood 802.11a iyo 802.11b labadaba.
Evolution of 802.11
Qayb kasta oo cusub oo ku jirta 802.11 qoys (badanaa loo yaqaan "wax ka beddelid") waxay ku heleysaa magac leh waraaqo cusub oo lagu daray. Ka dib 802.11a iyo 802.11b, heerar cusub ayaa la sameeyay, jiilalka guusha ee nidaamka Wi-Fi ee asaasiga ah ee la soo saaray:
- 802.11g (oo la ansixiyay sannadkii 2003)
- 802.11n (oo la ansixiyey 2009)
- 802.11ac (ansixiyey 2013)
Marka la barbar dhigo kuwan cusub, kooxda IEEE 802.11 waxay soo saareen qandaraasyo kale oo badan oo isbeddel ah iyo isbeddelada kale. IEEE guud ahaan wuxuu ku magacaabaa magacyada habsami u socodka kooxo shaqeynaya halkii laga bixin lahaa marka heerka la dhammeeyo. Tusaale ahaan:
- 802.11c - hawlgalka xidhiidhka buundada (oo loo wareejiyey 802.1D)
- 802.11d - aduunka oo dhan waafaqsan qawaaniinta isticmaalka nambarada calaamadaha calaamadaha (2001)
- 802.11e - Taageerada Tayada (QoS) (2005-2007)
- 802.11F - Talo-celinta Muhiimka ah ee Inter-Access Point ee wada-xiriirka u dhexeeya helitaanka dhibcaha si ay u taageeraan macaamiisha roaming (2003)
- 802.11h - Wanaajinta heerka 802.11a si loo taageero shuruudaha shuruudaha ee Yurub (2003)
- 802.11i - hagaajinta amniga ee 802.11 qoys (2004)
- 802.11j - kordhinta 5 GHz signalka si loo taageero shuruudaha Japan shuruudaha (2004)
- 802.11k - Maaraynta nidaamka WLAN
- 802.11l - ayaa looga booday si looga fogaado wareerka 802.11i
- 802.11m - dayactirka 802.11 dukumentiga qoyska
- 802.11o - ka boodey
- 802.11p - Helitaanka Wireless-ka ee Deegaanka Gawaarida
- 802.11q - ka boodey
- 802.11r - taageerada dhakhso ah ee xawilaadda oo loo marayo marxaladaha aasaasiga ah ee adeegga
- 802.11s - ESS naqshadeynta shabakadaha dhibcaha
- 802.11T - Saadaasha Heerka Horumarka Siman - Soo-jeedin loogu talagalay heerarka imtixaanka iyo heerarka imtixaanka
- 802.11u - Wareegida 3G / Cellular iyo qaabab kale oo shabakadaha dibadda ah
- 802.11v - maareynta shabakadaha isku xirka / nidaamka qalabka
- 802.11w - Maaraynta Ilaalinta Maaraynta Nabadgelyada Badbaadada
- 802.11x - ka boodey (magaca guud ee qoyska 802.11)
- 802.11y - Nidaamka Ku Meel-Gaarka ah ee Ka-hortagga Ka-hortagga
Bogga rasmiga ah ee IEEE 802.11 Mashruuca Waqtiga Mashruuca Waqtiga waxaa daabacay IEEE si loo muujiyo xaaladda heerarka siman ee hadda jira ee hadda jira.