802.11a Sadarwar Kasuwanci a Gina
802.11a yana daya daga cikin ka'idojin sadarwa na Wi-Fi na 802.11 na farko da aka kirkiro a cikin IEEE 802.11 matsayin iyali.
802.11a sau da yawa an ambata a dangane da wasu batutuwa kamar 802.11a, 802.11b / g / n, da 802.11ac . Sanin cewa sun bambanta da amfani musamman idan sayen sabon na'ura mai ba da hanya tsakanin hanyoyin sadarwa ko haɗa sababbin na'urori zuwa cibiyar sadarwar da ta saba da gaske wadda ba za ta goyi bayan fasahar sabuwar ba.
Lura: 802.11a fasahar mara waya ba za ta dame shi da 802.11ac ba, wanda yafi sabuntawa kuma ya fi dacewa.
802.11a Tarihi
An kafa asirin 802.11a a shekarar 1999. A wannan lokacin, kawai fasaha na Wi-Fi da aka karanta don kasuwa shine 802.11b . Asali na 802.11 ba ta sami tartsatsi sosai ba saboda yadda ya rage gudu sosai.
802.11a da sauran waɗannan ka'idodin sun saba da ma'anar cewa 802.11a na'urorin ba zasu iya sadarwa tare da wasu nau'i ba, kuma a madadin haka.
Cibiyar Wi-Fi ta 802.11a tana goyon bayan matsakaicin bandwidth na 54 Mbps , mafi mahimmanci fiye da 11 Mbps na 802.11b kuma a kan tare da abin da 802.11g zai fara ba da 'yan shekaru kaɗan. Ayyukan 802.11a sun sanya fasaha mai kyau, amma cimma wannan matakin da ake buƙata ta amfani da kayan aiki mafi tsada.
802.11a ta sami wasu tallafi a cikin hanyoyin sadarwar kamfanoni inda farashin bai kasance ba. A halin yanzu, 802.11b da kuma sadarwar gida ta farko sun fashe a cikin shahararren lokaci a lokaci ɗaya.
802.11b sannan kuma 802.11g (802.11b / g) cibiyoyi sun mamaye masana'antu a cikin 'yan shekaru. Wasu masana'antun sun gina na'urori tare da haɗin Intanet na A da G don su iya tallafawa kowane misali a kan hanyoyin sadarwa / / / g / g, kodayake waɗannan ba su da mahimmanci kamar yadda kaɗan 'yan na'urorin na'ura sun wanzu.
A ƙarshe, 802.11a Wi-Fi ya fita daga kasuwa don neman sababbin ka'idojin mara waya.
802.11a da Siginar Mara waya
Gwamnatocin gwamnatin Amurka a shekarun 1980 sun bude nau'i uku mara waya mara waya don amfani da jama'a - 900 MHz (0.9 GHz), 2.4 GHz, da 5.8 GHz (wani lokaci ana kira 5 GHz). 900 MHz ya nuna rashin ƙarfin lokaci don amfani da sadarwar bayanai, kodayake wayoyi marasa amfani sunyi amfani dashi a yadu.
802.11a yana watsa sigina na radiyo mara waya mara waya a cikin mita 5.8 GHz. An tsara wannan rukunin a Amurka da kasashe da dama na dogon lokaci, ma'ana cewa cibiyoyin Wi-Fi 802.11a ba dole su yi jituwa da tsangwama na sigina daga wasu nau'in na'urorin watsawa ba.
Siffofin yanar gizo 802.11b sunyi amfani da ƙananan hanyoyi a cikin yanayin 2.4 GHz marasa daidaituwa kuma sun fi sauƙi ga rikitarwar rediyo daga wasu na'urori.
Batutuwa Tare da Hanyoyin Wi-Fi 802.11a
Kodayake yana taimakawa inganta aikin cibiyar yanar gizo da rage tsangwama, alamar siginar 802.11a ta iyakance ta amfani da ƙananan GHz 5. Hanyoyin watsa bayanai na 802.11a na iya ɗaukar kasa da kashi ɗaya cikin hudu na yanki na 802.11b / g.
Ganuwar Brick da sauran bugunan yana shafi 802.11a cibiyoyin sadarwa mara waya don samun digiri fiye da yadda suke yin tallace-tallace na 802.11b / g.