I-802.11b yi- Wi-Fi yokuqala ye- intanethi ye-intanethi yokunxibelelana kwentambo ukufumana ukuthotyelwa kwamanzi kunye nabathengi. Ngomnye weeNkcubeko ezininzi zeeNjineli zombane kunye neZijoni (IEEE) kwimigangatho ye- 802.11 . Iimveliso ezingama-802.11b zenziwe zingasebenzi kwaye ziphunyezwe ngama- 802.11g kunye nama- 802.11n ama- Wi-Fi amazinga.
Imbali ye-802.11b
Kuze kube phakathi kwee-1980, ukusetyenziswa kwe-frequency frequency space malunga ne-2.4 GHz yayilawulwa yi-arhente karhulumente ehlabathini lonke. Inxibelelwano ye-Federal Communications Communications (FCC) iqalise utshintsho ukulungisa le bhanti, eyayiqhelile kwi-ISM (izixhobo zoshishino, izenzululwazi kunye nezokwelapha). Injongo yabo yayikukhuthaza ukuphuhliswa kwezicelo zorhwebo.
Ukwakhiwa kweenkqubo zengcingo zentengiso kwi-intanethi enkulu kudinga inqanaba elithile lemiqathango yobugcisa phakathi kwabathengisi. Yilapho i-IEEE ingene khona kwaye yabela iqela layo elisebenza ngama-802.11 ukuyila isisombululo, ekugqibeleni saziwa ngokuba yi-Wi-Fi. Umgangatho wokuqala we-802.11 we-Wi-Fi, owapapashwa ngo-1997, unemiqathango emininzi yobuchwepheshe ukuba ibe luncedo kakhulu, kodwa wawuvusa indlela yokuphuhlisa umgangatho wesibini wesizukulwana obizwa ngokuba ngu-802.11b.
I-802.11b (namhlanje ebizwa ngokuthi "B" ngcaciso emfutshane) yanceda ukuvula umbane wokuqala wokunxibelelana kweekhaya ezingenazintambo. Ngethulo lwalo ngo-1999, abenzi beendlela zokuhamba ngeendlela zokubambisa ezifana ne-Linksys baqalisa ukuthengisa ii-Wi-Fi routers kunye neendlela ze- Ethernet ezicwangcisiweyo ezazisetyenziswa ngaphambili. Nangona le mveliso endala ingaba nzima ukuyibeka nokulawula, ukulungelelana kunye nokubonakalayo okuboniswa ngu-802.11b yenza i-Wi-Fi ibe yimpumelelo enkulu yorhwebo.
802.11b Ukusebenza
Izixhumo ezingama-802.11b zixhasa iqondo lokufikelela kwi- 11 Mbps . Nakuba kuthelekiswa ne- Ethernet yendabuko (10 Mbps), uB wenza i-slower ehamba phambili kunabo bonke ubuchwepheshe obutsha be-Wi-Fi ne-Ethernet. Ukufumana okungakumbi, jonga - Iyintoni i-Speed Speed ye-Network ye-Wi-Fi ye-802.11b ?
802.11b kunye nokungafani kwe-Wireless
Ukuthunyelwa kwibala lobunzima be-2.4 GHz, i-802.11b idluliselwayo ingahlangabezana nokuphazamiseka kwomsakazo kwenye imveliso yendlu engenazintambo njengama-wireless cordless, ii-oven microwaves, i-garage door openers, kunye nabagadi bezingane.
802.11 kunye nokuBambisana okuBhekayo
Kwaye iinqununu ezintsha ze-Wi-Fi ziyaqhubeka zixhasa 802.11b. Kungenxa yokuba isizukulwana ngasinye esitsha sendlela eziphambili ze-Wi-Fi zilandelelwano oluhambelana nazo zonke izizukulwana zangaphambili: Ngokomzekelo,
- 802.11g iivili kunye neenkxaso zokunika inkxaso kumakhasimende akwa- G kunye neB - abizwa ngokuba ngama- 802.11b / g amanethiwekhi
- I-802.11n ii-routers kunye neenkxaso zokunika inkxaso kwi-N, G kunye ne-B kumakhasimende - 802.11b / g / n amanethiwekhi
- Iipro routers ezingama-802.11ac kunye neenkcukacha zokufikelela inkxaso kwiinkampani ze-AC, N, G kunye ne- 802.11b / g / n / ac
Oku kuhambelana nokubuyisana kubonakalise ukuphumelela kwempumelelo ye-Wi-Fi, njengoko abathengi kunye namashishini banokongeza izixhobo ezintsha kumanethiwekhi abo kwaye ngokukhawuleza baqulunqe izixhobo ezindala ngokuphazamiseka.