802.11a/b/g/n/ac Ci gaba da bambanta

802.11a/b/g/n/ac Ci gaba da Bambance-bambance
Tun farkon sakin Wi Fi ga masu amfani a cikin 1997, ma'aunin Wi-Fi yana ci gaba da haɓakawa, yawanci yana ƙaruwa da haɓaka ɗaukar hoto.Kamar yadda aka ƙara ayyuka zuwa ainihin daidaitattun IEEE 802.11, an sake duba su ta gyare-gyaren sa (802.11b, 802.11g, da sauransu)

802.11b 2.4GHz
802.11b yana amfani da mitar 2.4 GHz ɗaya kamar daidaitattun 802.11 na asali.Yana goyan bayan iyakar ƙa'idar gudun 11 Mbps da kewayon har zuwa ƙafa 150.Abubuwan 802.11b suna da arha, amma wannan ma'auni yana da mafi girma kuma mafi saurin gudu tsakanin duk matakan 802.11.Kuma saboda 802.11b da ke aiki a 2.4 GHz, kayan aikin gida ko wasu cibiyoyin sadarwa na Wi-Fi na 2.4 GHz na iya haifar da tsangwama.

802.11a 5GHz OFDM
An sake fasalin sigar “a” na wannan ma'aunin lokaci guda tare da 802.11b.Yana gabatar da fasaha mai rikitarwa mai suna OFDM (Orthogonal Frequency Division Multiplexing) don samar da sigina mara waya.802.11a yana ba da wasu fa'idodi sama da 802.11b: yana aiki a cikin rukunin mitar mitar GHz mara ƙarancin cunkoson 5 GHz don haka ba shi da sauƙi ga tsangwama.Kuma bandwidth ɗin sa ya fi 802.11b, tare da matsakaicin matsakaicin 54 Mbps.
Wataƙila ba ku ci karo da na'urori da yawa na 802.11a ko masu amfani da hanyar sadarwa ba.Wannan saboda na'urorin 802.11b sun fi rahusa kuma suna ƙara shahara a kasuwar mabukaci.802.11a galibi ana amfani dashi don aikace-aikacen kasuwanci.

802.11g 2.4GHz OFDM
Ma'aunin 802.11g yana amfani da fasahar OFDM iri ɗaya kamar 802.11a.Kamar 802.11a, yana goyan bayan matsakaicin ƙimar ka'idar 54 Mbps.Koyaya, kamar 802.11b, yana aiki a cikin cunkoson mitoci 2.4 GHz (saboda haka yana fama da matsala iri ɗaya kamar 802.11b).802.11g baya dacewa da na'urorin 802.11b: na'urorin 802.11b na iya haɗawa zuwa wuraren samun damar 802.11g (amma a cikin saurin 802.11b).
Tare da 802.11g, masu amfani sun sami ci gaba mai mahimmanci a cikin saurin Wi-Fi da ɗaukar hoto.A halin yanzu, idan aka kwatanta da al'ummomin da suka gabata na samfurori, masu amfani da hanyoyin sadarwa mara waya sun zama mafi kyau kuma mafi kyau, tare da mafi girma da iko da mafi kyawun ɗaukar hoto.

802.11n (Wi Fi 4) 2.4/5GHz MIMO
Tare da ma'auni na 802.11n, Wi Fi ya zama mafi sauri kuma mafi aminci.Yana goyan bayan matsakaicin ƙimar watsa ka'idar 300 Mbps (har zuwa 450 Mbps lokacin amfani da eriya uku).802.11n yana amfani da MIMO (Tsarin shigarwa da yawa), inda masu watsawa / masu karɓa da yawa ke aiki a lokaci ɗaya a ɗaya ko duka ƙarshen hanyar haɗin.Wannan na iya ƙara yawan bayanai ba tare da buƙatar babban bandwidth ko ikon watsawa ba.802.11n na iya aiki a cikin mitar mitar 2.4 GHz da 5 GHz.

802.11ac (Wi Fi 5) 5GHz MU-MIMO
802.11ac yana haɓaka Wi-Fi, tare da saurin gudu daga 433 Mbps zuwa gigabits da yawa a sakan daya.Don cimma wannan aikin, 802.11ac yana aiki ne kawai a cikin rukunin mitar GHz 5, yana tallafawa har zuwa rafukan sararin samaniya guda takwas (idan aka kwatanta da rafukan guda huɗu na 802.11n), ya ninka nisan tashar zuwa 80 MHz, kuma yana amfani da fasahar da ake kira beamforming.Tare da haɓakawa, eriya na iya isar da siginar rediyo ta asali, don haka kai tsaye suna nuni zuwa takamaiman na'urori.

Wani muhimmin ci gaba na 802.11ac shine Multi User (MU-MIMO).Kodayake MIMO tana jagorantar rafuka da yawa zuwa abokin ciniki guda ɗaya, MU-MIMO na iya sarrafa rafukan sararin samaniya lokaci guda zuwa abokan ciniki da yawa.Ko da yake MU-MIMO baya ƙara saurin kowane abokin ciniki, yana iya inganta jimillar bayanan da aka fitar na gabaɗayan hanyar sadarwa.
Kamar yadda kake gani, aikin Wi-Fi yana ci gaba da haɓakawa, tare da yuwuwar saurin gudu da aiki yana gabatowa da saurin waya

802.11ax Wi-Fi 6
A cikin 2018, WiFi Alliance sun ɗauki matakan don sa daidaitattun sunayen WiFi sauƙin ganewa da fahimta.Za su canza ma'aunin 802.11ax mai zuwa zuwa WiFi6

Wi-Fi 6, ina 6?
Alamomin aiki da yawa na Wi Fi sun haɗa da nisa watsawa, ƙimar watsawa, ƙarfin cibiyar sadarwa, da rayuwar baturi.Tare da haɓaka fasahar fasaha da lokutan, buƙatun mutane don saurin gudu da bandwidth suna ƙara ƙaruwa.
Akwai jerin matsaloli a cikin haɗin Wi-Fi na al'ada, kamar cunkoso na hanyar sadarwa, ƙaramin ɗaukar hoto, da buƙatar canza SSIDs koyaushe.
Amma Wi Fi 6 zai kawo sabbin canje-canje: yana haɓaka ikon amfani da ƙarfin ɗaukar hoto na na'urori, yana goyan bayan madaidaicin madaidaicin masu amfani da yawa, kuma yana iya nuna kyakkyawan aiki a cikin yanayin yanayin mai amfani, yayin da kuma yana kawo nisan watsawa mai tsayi da ƙimar watsawa mafi girma.
Gabaɗaya, idan aka kwatanta da waɗanda suka gabace ta, fa'idar Wi Fi 6 shine "dual high da dual low":
Babban gudun: Godiya ga gabatarwar fasaha irin su uplink MU-MIMO, 1024QAM modulation, da 8 * 8MIMO, matsakaicin saurin Wi Fi 6 zai iya kaiwa 9.6Gbps, wanda aka ce yayi kama da saurin bugun jini.
Babban isa: Mafi mahimmancin haɓakawa na Wi Fi 6 shine don rage cunkoso da ƙyale ƙarin na'urori su haɗa zuwa cibiyar sadarwar.A halin yanzu, Wi Fi 5 na iya sadarwa tare da na'urori hudu a lokaci guda, yayin da Wi Fi 6 zai ba da damar sadarwa tare da na'urori da yawa a lokaci guda.Wi Fi 6 kuma yana amfani da OFDMA (Orthogonal-mita-raba dama mai yawa) da fasaha mai samar da siginar tashoshi da yawa waɗanda aka samo daga 5G don haɓaka ƙwarewar Spectral da ƙarfin cibiyar sadarwa bi da bi.
Ƙananan jinkiri: Ta hanyar amfani da fasaha irin su OFDMA da SpatialReuse, Wi Fi 6 yana ba masu amfani da yawa damar watsawa a cikin layi daya a cikin kowane lokaci, kawar da buƙatar yin layi da jira, rage gasa, inganta inganci, da rage jinkiri.Daga 30ms don Wi Fi 5 zuwa 20ms, tare da matsakaicin raguwar jinkiri na 33%.
Ƙananan amfani da makamashi: TWT, wani sabon fasaha a cikin Wi Fi 6, yana ba AP damar yin shawarwarin sadarwa tare da tashoshi, rage lokacin da ake buƙata don kula da watsawa da kuma bincika sigina.Wannan yana nufin rage amfani da baturi da inganta rayuwar batir, wanda ke haifar da raguwar 30% na amfani da wutar lantarki.

Tun 2012 |Samar da kwamfutocin masana'antu na musamman don abokan cinikin duniya!