Mauthenga Opanda Mauthenga Opanda 802.11a Pa Ulemerero
802.11a ndi chimodzi mwa zoyambirira za 802.11 Wi-Fi zoyankhulana zomwe zimapangidwa muyezo wa IEEE 802.11 banja.
Nthawi zambiri 802.11a amatchulidwa motsutsana ndi miyezo ina monga 802.11a, 802.11b / g / n, ndi 802.11ac . Kudziwa kuti iwo ndi osiyana kumathandiza makamaka pamene mukugula router yatsopano kapena kulumikiza zipangizo zatsopano ku intaneti yakale yomwe singathe kuthandizira chithunzithunzi chatsopano.
Dziwani: teknoloji yopanda waya ya 802.11a sayenera kusokonezedwa ndi 802.11ac, muyezo watsopano komanso wapamwamba kwambiri.
Mbiri 802.11a
Malemba 802.11a adalandiridwa mu 1999. Panthawiyo, njira yowonjezera ya Wi-Fi yomwe imakonzedwa pamsika inali 802.11b . Chiyambi cha 802.11 sichinapitirize kutumizidwa kwadzidzidzi chifukwa cha kufulumira kwake kofulumira.
802.11a ndi miyezo inayi sinali yogwirizana, kutanthauza kuti zipangizo 802.11a sizikanakhoza kuyankhulana ndi mitundu ina, ndipo mosiyana.
Msewu wa Wi-Fi wa 802.11a umathandizira maulendo opitirira 54 Mbps , omwe ali abwino kwambiri kuposa 11 Mbps a 802.11b ndipo ndi 802.11g omwe angayambe kupereka zaka zingapo pambuyo pake. Kuchita kwa 802.11a kunapanga tekinoloje yokongola, koma kukwaniritsa njirayi ya ntchito ikufunika kugwiritsa ntchito hardware yotsika mtengo kwambiri.
802.11a adalandila kuti azitsatiridwa m'magulu a makampani omwe ndalama zinalibe zovuta. Pakalipano, 802.11b ndi makina oyambirira a panyumba anaphulika pa kutchuka pa nthawi yomweyo.
802.11b ndiyeno 802.11g (802.11b / g) ma intaneti ankalamulira malonda mu zaka zingapo. Okonza ena amapanga zipangizo zamagetsi a A ndi G ogwirizana kuti athe kuthandizira pazinthu zomwe zimatchedwa a / b / g, ngakhale kuti izi sizinali zachilendo ngati zida zothandizira.
Potsirizira pake, 802.11a Wi-Fi inachoka pamsika chifukwa cha zatsopano zamakina opanda waya.
802.11a ndi mawonekedwe opanda waya
Olamulira a boma la US mu 1980 adatsegula magulu atatu osasunthika opanda waya omwe amagwiritsa ntchito - 900 MHz (0.9 GHz), 2.4 GHz, ndi 5.8 GHz (nthawi zina amatchedwa 5 GHz). 900 MHz inakhala yotsika kwambiri kuti ikhale yopindulitsa pa intaneti, ngakhale kuti mafoni opanda pake ankagwiritsa ntchito kwambiri.
802.11a amatumiza mauthenga ailesi opanda mawonekedwe opanda mawonekedwe pafupipafupi 5.8 GHz. Bungwe ili linayendetsedwa ku US ndi maiko ambiri kwa nthawi yaitali, kutanthauza kuti mawotchi a 802.11a Wi-Fi sanafunikire kutsutsana ndi zizindikiro zachitsulo kuchokera kuzinthu zina zotumizira.
Mabungwe 802.11b amagwiritsidwa ntchito mafupipafupi m'mafupipafupi omwe sagwiritsidwe ntchito 2,4 GHz ndipo amakhala otengeka kwambiri ndi mauthenga ena.
Nkhani Zili ndi Network 802.11a Wi-Fi Networks
Ngakhale kuti zimathandiza kusintha machitidwe ogwirira ntchito ndi kuchepetsa kusokoneza, chizindikiro cha 802.11a chinali choperewera pogwiritsa ntchito maulendo 5 GHz. Chotsitsa cha 802.11a chothandizira chitha kuperekera zosakwana gawo limodzi lachinayi malo omwe ali ndi 802.11b / g unit.
Maboma a njerwa ndi zina zotseketsa zimakhudza ma intaneti 802.11a opanda zingwe kuposa momwe amachitira maofesi 802.11b / g.