WiMAX vs Wifi
WiMAX thiab Wi-Fi yog ob qho tib si wireless thev naus laus zis tab sis Wi-Fi tsuas yog tuaj yeem ua haujlwm luv luv (Max 250 m) thiab WiMAX tuaj yeem ua haujlwm ntev (kwv yees li 30 Km). WiMAX tau kho thiab mobile version uas tuaj yeem siv rau ntau daim ntawv thov nrog bandwidth siab dua (ib puag ncig 40 Mbps). Zoo li DSL lossis Cable internet hauv cov nroog, WiMAX tuaj yeem yog kev hloov pauv cable hauv cov chaw nyob deb nroog uas cov chaw muab kev pabcuam feem ntau tsis muaj tooj liab los muab kev pabcuam DSL. Thiab 40 Mbps yog nrawm dua txawm tias ADSL2+. Triple kev pab cuam xws li suab, yees duab thiab cov ntaub ntawv tuaj yeem muab tau yooj yim dua WiMAX. Tus tshiab version ntawm WiMAX 802.16m yuav tsum xa 1 Gbps uas sib npaug rau Fiber rau Tsev thiab nws muaj txiaj ntsig zoo rau kev rov qab los ntawm chaw ua haujlwm nyob deb lossis chaw muab kev pabcuam nkag.
WiMAX (IEEE 802.16)
WiMAX (802.16) (Wireless Interoperability rau Microwave Access) yog 4th Generation mobile nkag tshuab rau kev nkag mus ceev. Cov qauv tam sim no ntawm cov thev naus laus zis no tuaj yeem muab ib puag ncig 40 Mbps hauv qhov tseeb thiab qhov hloov kho tshiab yuav tsum xa 1Gbps hauv qhov kawg kawg.
WiMAX ntog hauv IEEE 802.16 tsev neeg thiab 802.16e (WiMAX xav tau yoj 1, 1 × 2 SIMO) muab 23 Mbps rub tawm thiab 4 Mbps upload thiab 802.16e (WiMAX xav tau yoj 2, 2 × 2 MIMO (Multiple Input thiab Ntau Cov Tso Tawm) muaj 46 Mbps downlink thiab 4 Mbps uplink.
WiMAX tau kho cov version thiab mobile version. Qhov ruaj khov WiMAX version (802.16d thiab 802.16e) tuaj yeem siv rau cov kev daws teeb meem dav dav rau hauv tsev thiab tuaj yeem siv rau rov qab cov chaw ua haujlwm nyob deb lossis chaw nres tsheb txawb. Lub WiMAX mobile version (802.16m) tuaj yeem siv los hloov GSM thiab CDMA thev naus laus zis.
Wi-Fi (IEEE 802.11 tsev neeg)
Wireless Fidelity (Wi-Fi) yog wireless LAN thev naus laus zis uas tuaj yeem siv luv luv. Nws yog cov cuab yeej siv wireless feem ntau siv hauv tsev, Hotspots thiab koom nrog hauv wireless network. Wi-Fi ua haujlwm hauv 2.4GHz lossis 5GHz uas tsis muaj kev faib tawm zaus (Tshwj xeeb faib rau ISM - Muaj Kev Tshawb Fawb thiab Kho Mob). Wi-Fi (802.11) muaj ob peb ntau yam thiab qee qhov ntawm lawv yog 802.11a, 802.11b, 802.11g thiab 802.11n. 802.11a, b, g ua haujlwm nyob rau hauv 2.4 GHz zaus thiab thaj tsam ntawm 40-140 meters (hauv qhov tseeb) thiab 802.11n ua haujlwm hauv 5 GHz nrog OFDM kev hloov kho thev naus laus zis yog li ua rau muaj kev nrawm dua (40Mbps hauv kev muaj tiag) ranged rau 70-250 meters.
Peb tuaj yeem teeb tsa Wireless LAN (WLAN) hauv tsev nrog Wireless Routers. Thaum koj teeb tsa Wi-Fi hauv tsev xyuas kom koj ua kom muaj kev ruaj ntseg ntawm nws kom tsis txhob muaj 3rd tog nkag. Ob peb ntawm lawv yog, Ruaj Ntseg Wireless lossis Encryption, MAC chaw nyob lim thiab ntau tshaj qhov no tsis txhob hnov qab hloov tus password qub ntawm koj lub wireless router.
Qhov txawv ntawm WiMAX thiab Wi-Fi
(1) Ob leeg ua haujlwm hauv Microwave ntau zaus kom muaj kev nkag mus rau wireless
(2) Wi-Fi qhov luv luv thev naus laus zis feem ntau siv hauv, hauv tsev siv thaum WiMAX yog cov cuab yeej siv ntev los xa cov wireless broadband mus rau qhov kawg.
(3) Wi-Fi feem ntau yog qhov kawg siv thev naus laus zis uas cov neeg siv tuaj yeem yuav Wi-Fi li thiab teeb tsa lawv tus kheej thiab WiMAX feem ntau yog siv los ntawm cov chaw muab kev pabcuam.
(4) Wi-Fi siv CSMA / CA raws tu qauv uas tuaj yeem yog kev sib txuas raws lossis kev sib txuas tsawg dua qhov WiMAX siv kev sib txuas taw qhia MAC raws tu qauv.
(5) Wi-Fi yog wireless LAN technology thiab WiMAX yog wireless LAN technology (WLAN)
