ʻO 802.11a Kelepa Pūnaewele ma kahi nānā
ʻO 802.11a kekahi o nā papahana laulima 802.11 i hanaʻia i loko o kaʻohana IEEE 802.11ʻohana kūikawā .
ʻO 802.11a ke'ōlelo pinepineʻia e pili ana i nāʻano likeʻole e like me 802.11a, 802.11b / g / n, a me 802.11ac . ʻO kaʻikeʻana heʻano likeʻole lākou, he mea maikaʻi loa ia i ka kūʻaiʻana i kahi mea hoʻopuka hou aiʻole e hoʻohui i nā polokalamu hou i kahi pūnaewele kahiko loa i hikiʻole ke kākoʻo i keʻenehana hou.
E noʻonoʻo : 802.11aʻole ke kānalua i kaʻenehana kaʻahana me 802.11ac, kahiʻoi aku aʻoi aku ka lōʻihi.
ʻO 802.11a Kaʻao
Ua hoʻopaʻaʻia ka 802.11a kiko'ī i ka makahiki 1999. I kēlā manawa,ʻo kaʻenehana Wi-Fi wale nō i hoʻomākaukauʻia no ka mākele he 802.11b . ʻAʻole i loaʻa i ka 802.11 kumu kūʻai nui ka hopena ma muli o kona wikiwiki wikiwiki.
ʻO 802.11a a me kēia mau papahana'ē aʻe he likeʻole,ʻo ia hoʻi,ʻaʻole e hiki i nā lako ke hoʻokaʻaʻike me nāʻano'ē aʻe, a me ka likeʻole.
ʻO kahi 802.11a ke kele pūnaewele Wi-Fi i ka laulima kālepa kiʻekiʻe o 54 Mbps ,ʻoi aku ka maikaʻi ma mua o 11 Mbps o 802.11b a ma luna me ka 802.11g e hoʻomaka ana e hāʻawi i kekahi mau makahiki ma hope. ʻO ka hanaʻana o 802.11a, ua hana ia heʻenehana akamai, akā, e loaʻa ana i kēlā kūlana o ka hana e hoʻohanaʻia ana me ka meaʻoihana waiwaiʻoi aʻe.
Ua loaʻaʻo 802.11a i kahi hoʻokomo i nā'ōnaehana'ōnaehana pūnaewele kahi i emiʻole ai ke kumukūʻai. I kēia manawa, ua hoʻonuiʻia ka 802.11b a me ka laulima pūnaewele mua i kaʻike nui i ka manawa like.
802.11b a 802.11g (802.11b / g) mau pūnaewele i hoʻokumu i kaʻoihana i loko o kekahi mau makahiki. ʻO kekahi poʻe mea hana hana i kūkulu i nā mea hana me nā'ōnaehana A a me G a paʻa i hiki iā lākou ke kākoʻo i ke kūlana i kapaʻia heʻea / a / b / g, akā naʻe,ʻaʻole i maʻalahi kēia mau polokalamu kelepona.
I ka pae hope loa, 802.11a i hoʻokuʻuʻia ka Wi-Fi mai ke kālepa i ka makemakeʻana i nā kūlana'ōnaehana hou.
ʻO 802.11a a me ka Sikalikoʻole
Ua wehe nā luna aupuni o ka US i nā makahiki 1980 iʻekolu mau kelepona alaika kūikawā no ka lehulehu - 900 MHz (0.9 GHz), 2.4 GHz, a me 5.8 GHz (i kekahi manawa i kapaʻia he 5 GHz). ʻO 900 MHz ua emi loa ka pinepine no kaʻikepili pūnaewele,ʻoiai ua hoʻohanaʻia nā telepili liʻiliʻiʻole .
Hiki i ka 802.11a ke hoʻouna i nā leka uila pālahalahaʻole i ka 5.8 GHz. Ua hoʻoponoponoʻia kēia hui i ka US a me nā'āina no ka manawa lōʻihi,ʻo ia hoʻi, 802.11aʻaʻole i loaʻa i nā laina o ka Wi-Fi ke paio me ka hōʻailona hōʻino mai nāʻano likeʻole o nā mea unuhi.
Hoʻohana 802.11b i hoʻohanaʻia i nā alapine i ka 2.4 2.4 GHz aʻoi loa aku ka hewaʻole a uaʻoi aku ka maʻalahi i ka uila o nā lekiō mai nā mea'ē aʻe.
Nā Hana me 802.11a Wi-Fi Networks
ʻOiai e kōkua ia i ka hoʻomaikaʻiʻana i kaʻoihana kikowaena a ho'ēmi i ka pilikia, ua palena ka hōʻailona 802.11a i ka hoʻohanaʻana i 5 mau GHz. Hiki i kekahi 802.11a hiki i kahi transmitter ke uhi i lalo iho o ka hapahā o kahi o ka hui like 802.11b / g.
ʻO nā paia o Brick a me nā pilikia'ē aʻe e pili ana i 802.11a kelepona pūnaewele iʻoi aʻe ka nui aʻe ma mua o ka hanaʻana i nā lainahana 802.11b / g like.