Qee lub sij hawm kuj hu ua wireless networking li "Wi-Fi" txawm tias thaum lub network siv hom kev tiv thaiv tsis tshua zoo sib xws ntawm wireless technology. Thaum nws yuav zoo li zoo tagnrho txhua lub ntiaj teb lub wireless kev pab yuav tsum siv ib qho kev sib txuas ntawm network xws li Wi-Nkaus, hnub no tus tes hauj lwm txhawb ntau txoj kev sib txawv. Yog vim li cas: Tsis muaj ib qho kev pov hwm hauv kev ua neej muab kev pom daws rau txhua qhov sib txawv wireless usages neeg xav tau. Ib txhia yog qhov zoo dua qub kom txuag tau roj teeb rau ntawm mobile pab kiag li, tab sis lwm tus muaj kev siab dua los yog kev sib txuas lus ntev thiab kev sib txuas ntev.
Cov kev cai lij choj hauv qab wireless no tau muab pov thawj tshwj xeeb tshaj yog pab rau cov neeg siv khoom siv thiab / lossis chaw lag luam.
LTE
Ua ntej tshiab nta smartphone pheej yig hu ua plaub-tiam ("4G") wireless networking, tes tau siv ntau yam kev qhia txog kev loj hlob ntawm cov neeg laus txuas nrog cov npe xws li HSDPA , GPRS , thiab EV-DO . Xov tooj nqa khoom thiab kev lag luam tau ntim nyiaj ntau ntau ntawm cov nyiaj los txhawb kev siv xov tooj ntawm tes thiab lwm yam khoom siv network los txhawb 4G, tus qauv hauv kev sib txuas lus hu ua Long Term Evolution (LTE) uas tau pib ua qhov nrov ua pib xyoo 2010.
LTE tshuab tau tsim los txhim kho cov ntaub ntawv qes tshaj thiab kev teeb meem ntawm kev teeb meem nrog cov laus xov tooj. Qhov kev cai lij choj muaj peev xwm nqa ntau tshaj 100 Mbps ntawm cov ntaub ntawv, tab sis qhov bandwidth network feem ntau yog tswj hwm rau theem 10 Mbps rau cov neeg siv. Vim yog qhov tseem ceeb ntawm cov cuab yeej siv, ntxiv rau qee cov kev tswj fwm hauv tsoom fwv, cov xov tooj nqa tsis tau tawm LTE hauv ntau qhov chaw. LTE kuj tsis haum rau hauv tsev thiab lwm qhov chaw sib tham , tsim los txhawb cov coob tus neeg muas zaub nyob ntev dua (thiab coj tus nqi siab dua). Ntau »
WI-nkaus
Wi-nkaus yog dav txuas nrog wireless networking raws li nws tau dhau los ua tus qauv tseeb tseeb rau cov tes hauj lwm hauv tsev thiab cov koom tes hauv tsoom hwv . WI-Fi pib ua nrov nrov nyob rau xyoo 1990 los ntawm kev sib txuas lus ntawm kev sib txuas lus ntawm PCs, cov tshuab luam ntawv, thiab lwm tus neeg siv khoom ua lag luam tau dav dav thiab cov ntaub ntawv txhawb kev txhawb zog tau zoo tuaj yeem ua tau ntau dua (los ntawm 11 Mbps txog 54 Mbps thiab siab dua).
Txawm tias Wi-nkaus tuaj yeem ua kom khiav mus ntev dua hauv cov chaw tswj kev nyab xeeb, qhov kev tiv thaiv no tsuas siv tau ua haujlwm hauv tib lub tsev lossis cov tuam tsev thiab cov chaw sab nrauv tsis pub khiav mus luv. Wi-nkaus speeds tseem qis tshaj rau lwm cov kev cai wireless. Txawb cov khoom siv txhawb nqa Wi-nkaus thiab LTE (ntxiv rau qee qhov kev lag luam loj dua cellular) los muab cov neeg siv yooj yim rau cov hom network uas lawv siv tau.
WI-Fi Protected Access ruaj ntseg sau ntxiv network authentication thiab cov ntaub ntawv encryption tuition rau Wi-nkaus tes hauj lwm. Tshwj xeeb tshaj yog, WPA2 raug nquahu kom siv nyob rau hauv tsev tes hauj lwm los tiv thaiv cov tog neeg uas tsis tau tso cai rau kev nkag mus rau hauv lub network lossis cuam tshuam cov ntaub ntawv ntawm tus kheej xa tuaj rau saum cua.
Bluetooth
Ib qho ntawm cov txheej txheem wireless tshaj plaws tseem muaj nyob hauv, Bluetooth yog tsim nyob rau hauv lub 1990s los ua synchronize cov ntaub ntawv ntawm cov xov tooj thiab lwm yam roj teeb powered pab kiag li lawm. Bluetooth yuav tsum tau qis dua tus nqi zog rau khiav lag luam dua Wi-nkaus thiab lwm cov kev sib txuas lus wireless. Ua ntej, Bluetooth sib txuas tsuas ua rau qis qis, feem ntau 30 feet (10 m) los yog tsawg dua thiab txhawb cov nqi qis dua, feem ntau 1-2 Mbps. Wi-nkaus tau hloov Bluetooth rau qee yam khoom siv tshiab, tiam sis muaj ntau lub xov tooj niaj hnub tseem txhawb ob qho ntawm cov kev cai no. Ntau »
60 GHz kev cai - WirelessHD thiab WiGig
Ib qho ntawm cov kev ua haujlwm zoo tshaj plaws nyob rau hauv computer networks yog streaming ntawm cov ntaub ntawv video, thiab ntau cov kev cai wireless uas khiav ntawm 60 Gigahertz (GHz) frequencies tau ua kom zoo dua qhov no thiab lwm yam kev siv uas yuav tsum tau siv nyiaj ntau ntawm cov kev siv network bandwidth. Ob qhov sib txawv ntawm kev lag luam hu ua WirelessHD thiab WiGig tau tsim nyob rau xyoo 2000s siv ob lub tshuab siv 60 GHz los txhawb kev sib txuas nrog high-bandwidth: WiGig muaj nruab nrab ntawm 1 thiab 7 Gbps ntawm bandwidth thaum WirelessHD txhawb zog ntawm 10 thiab 28 Gbps.
Txawm hais tias yooj yim video streaming yuav ua tau li Wi-nkaus tes hauj lwm, zoo tshaj plaws high-txhais video ntws xav cov ntaub ntawv ntau dua cov nqi no cov kev cai muab. Cov teeb meem loj tshaj ntawm WirelessHD thiab WiGig piv rau Wi-nkaus (60 GHz tiv thaiv 2.4 lossis 5 GHz) dhau heev lawm kev sib txuas, feem ntau yog luv dua Bluetooth, thiab feem ntau mus rau hauv ib chav tsev (raws li 60 GHz cov teeb meem tsis nkag mus rau phab ntsa zoo ). Ntau »
Wireless Home Automation Protocols - Z-Wave thiab Zigbee
Ntau qhov kev sib txuas lus hauv network tau raug tsim los txhawb nqa tsev automation systems uas cia kev tswj chaw taws teeb ntawm lub teeb, cov cuab yeej siv hauv tsev, thiab khoom siv cuab yeej. Ob lub koob npe nrov wireless rau tsev automation yog Z-Wave thiab Zigbee . Ua kom tsis muaj zog tsawg zog yuav tsum muaj nyob rau hauv tsev automation npuas, cov txheej txheem thiab lawv cov khoom siv kho mob tsuas yog qis cov ntaub ntawv qis - 0.25 Mbps rau Zigbee thiab tsuas yog 0.01 Mbps rau Z-Wave. Txawm tias cov ntaub ntawv muaj nuj nqis yog cov tsis pom zoo rau kev sib koom tes, cov technologies ua haujlwm zoo li kev sib txuas lus rau cov neeg siv khoom siv uas muaj kev sib txuas lus yooj yooj yim thiab tsis txwv. Ntau »