Unlicensed Mobile Access yog wireless technology uas tso cai rau kev sib txuas ntawm wireless wide-area networks (xws li GSM, 3G, EDGE, GPRS, thiab lwm yam.) Thiab wireless network thaj chaw (xws li Wi-nkaus, Bluetooth). Nrog UMA, koj tuaj yeem pib lub xovtooj ntawm koj tus xov tooj ntawm GSM, piv txwv li, thiab kev hu xov tooj yuav hloov los ntawm GSM network rau koj lub chaw ua haujlwm hauv Wi-nkaus network sai li sai tau thaum koj mus rau ntau yam. Thiab lwm yam.
Cas UMA Ua Haujlwm
UMA yog, qhov tseeb, lub npe ua lag luam rau ib qho kev siv hluav taws xob.
Thaum tus handset twb nyob hauv kev sib txuas lus los ntawm ib lub wireless WAN nkag mus rau thaj tsam ntawm lub wireless LAN network, nws nthuav tawm nws tus kheej mus rau WAN tus GAN xws li ua hauv chaw nres tsheb txawv ntawm WAN thiab hloov mus rau wireless LAN network . Lub chaw tsis tso cai LAN yog nthuav tawm raws li ib feem ntawm cov ntawv tso cai WAN, thiab yog li txoj kev hloov no tus kheev tau txais. Thaum twg tus neeg tsiv tawm qhov ntau ntawm cov tsis tso cai wireless LAN, qhov kev sib txuas yog roamed rov qab rau lub wireless WAN.
Tag nrho cov txheej txheem tag nrho yog cov pob tshab rau tus neeg siv, tsis muaj kev hu xov tooj tuaj lossis kev cuam tshuam kev xa mus.
Cov Neeg Uas Pab Tau Li Cas Los Ntawm UMA Li Cas?
- Cov neeg siv tau lawv lub xov tooj txawb hauv ntau qhov chaw thiab cov tes hauj lwm tab sis tseem muaj ib tus lej.
- Lawv muaj peev xwm teeb tsa lawv cov wireless LANs lawv tus kheej, li no daws qhov teeb meem uas tshwm sim los ntawm qhov hauv cov kev pab cuam ntawm lawv tus kws kho mob lub network.
- Them nyiaj qis tshaj tawm sab nraud ntawm qhov chaw muab kev pabcuam hauv lub xovtooj raug tshem tawm vim hais tias cov xovtooj tuaj yeem pib hauv cov tsis pub dawb wireless LANs.
- Txawb kev sib txuas lus ua tau ntau txhim khu kev pheej yig thiab pheej yig, incentivising qee leej neeg hloov PSTN tus nqi xov tooj .
Cov Neeg Muab Kev Pab Tau Li Cas Los Ntawm UMA?
- Muaj cov teebmeem Wi-Fi hotspots hauv qhov kev pabcuam hauv kev siv network tsis yog siv rau hauv wireless wireless WAN hardware.
- Congestion rau GSM thiab lwm lub vas nthiv WAN tes hauj lwm raug tshem tawm nrog ib feem ntawm cov tsheb khiav toggled mus rau unlicensed wireless LANs.
- Cov hauj lwm zoo li Wi-Fi yog qhov zoo dua rau nqa lwm hom xov xwm sib nrug ntawm lub suab, tsis yog GSM. Yog li, cov neeg zov me nyuam tuaj yeem tsim cov kab ntawv sib txuas lus nrog ntau tshaj suab. Qhov no muaj peev xwm tshwj xeeb tshaj yog rau cov neeg muab kev pabcuam hauv internet xav ua kom muaj kev pabcuam thiab txo nqi.
- UMA koom rau hauv IP txheej txheej nyob rau hauv cov txheej txheem pawg thiab yog vim li no qhib rau ntau cov kev cai nyob rau hauv cov txheej txheem txheej yooj yim, nws tsis yog txwv rau ib lub network, tab sis ua haujlwm ntawm Wi-nkaus, Bluetooth thiab lwm yam.
Disadvantages ntawm UMA
- Handsets yuav tsum tau UMA-tshaj. Cov no yog tsawg thiab kim heev. Qhov no yog ib qho teeb meem rau cov neeg zov me nyuam thiab cov neeg muaj npe.
- Thaum UMA cov chaw pabcuam kev khiav haujlwm, nws tuaj yeem tsis pub dawb losyog pheej yig hu ua SIP-based cov kev pabcuam thiab cov kev pabcuam xws li Skype. Vim li ntawd, tus nqi txiav tej zaum yuav tsis raug pov thawj ntau zaus.
UMA Yuav Tsum Tau Ua
Siv UMA, koj tsuas yog xav tau ib lub hom phiaj ua phiaj xwm wireless, wireless LAN-koj tus kheej lossis ib qhov chaw siv Wi-nkaus hotspot-thiab ib lub xov tooj txawb uas txhawb UMA. Ib co Wi-nkaus thiab 3G tes cia li tsis ua hauj lwm ntawm no.