Puas yog koj xav tsis thoob Bluetooth Versions Qhov txawv? Bluetooth yog lub npe ntawm lub tshuab hluav taws xob luv luv uas tshem tawm qhov xav tau ntawm kev sib txuas ntawm lub xov tooj. Bluetooth tau tsim nyob rau hauv 1994 los ntawm Ericsson lub tuam txhab los sib txuas lus wirelessly nrog cov xov tooj ntawm tes thiab lwm yam khoom siv mobile. Nws yog lub npe hu ua Harald Bluetooth (yav tas los tus huab tais Danish).
Dab tsi yog Bluetooth Version Qhov txawv
Qhov sib txawv ntawm Bluetooth versions tseem ceeb yog qhov tseeb Bluetooth versions txhawb cov ntaub ntawv hloov chaw siab dua, muaj kev sib txuas zoo dua thiab ruaj khov, muaj zog ntau dua, thiab muaj kev ruaj ntseg zoo dua li qub Bluetooth versions. Tau kawg bluetooth versions txawv tsis yog qhov ntawd.
Bluetooth 1.0
Thaum Bluetooth v1.0 tau tsim nyob rau xyoo 1998, nws yog qhov kev tshawb pom loj heev. Txawm li cas los xij, thev naus laus zis tseem tsis paub tab thiab raug kev txom nyem los ntawm ntau yam teeb meem xws li tsis muaj npe. Los ntawm cov qauv niaj hnub no, cov cuab yeej technology yog tam sim no obsolete.
Bluetooth v1.1 kho qee qhov teeb meem, tab sis qhov teeb meem loj tshaj plaws tau hais nrog kev taw qhia ntawm Bluetooth v1.2. Bluetooth versions sib txawv yog qhov kev txhim kho tseem ceeb suav nrog kev txhawb nqa rau kev hloov pauv zaus hopping (AFH) spectrum, uas txo cov kev cuam tshuam, kev sib kis ceev ceev txog li 721kbps, kev sib txuas sai dua thiab tshawb pom, Tus Tswv Tswj Kev Sib Tham (HCI) thiab Txuas Txuas Txuas Txuas (ESCO).
Bluetooth 2.0
Bluetooth v2.0 tau tso tawm ua ntej xyoo 2005. Qhov tseem ceeb ntawm tus qauv no yog kev txhawb nqa rau Kev Txhim Kho Cov Ntaub Ntawv (EDR), uas siv kev sib xyaw ua ke ntawm Phase Shift Keying Modulation (PSK) thiab GFSK rau pab kom zoo dua cov ntaub ntawv hloov ceev.
Cov thev naus laus zis tau txhim kho ntxiv nrog kev tso tawm ntawm Bluetooth v2.1. Nws tam sim no txhawb kev ruaj ntseg khub yooj yim (SSP), uas txhim kho kev ruaj ntseg thiab kev sib koom ua ke, thiab txhim kho cov lus nug teb (EIR), uas tso cai rau kev lim dej zoo dua ua ntej tsim kev sib txuas.
Ntawm tag nrho cov classic Bluetooth versions, v2.1 yog qhov nrov tshaj plaws thiab dav siv. Qhov no yog vim nws simplicity, Ntev ntau ntawm 33 m hloov 10 m, thiab ceev cov ntaub ntawv hloov ceev ntawm 3 Mbit / s hloov 0.7 Mbit / s.
Bluetooth 3.0
Bluetooth v3.0 tau tso tawm hauv xyoo 2009 thiab nthuav tawm hom kev kub ceev (HS), uas tso cai rau cov ntaub ntawv theoretical Hloov ceev mus txog 24 Mbps dhau qhov sib txuas 802.11 txuas. Cov thev naus laus zis no tau qhia ntau yam tshiab, xws li Kev Tswjhwm Zoo, Ultra Wideband, L2CAP Enhanced Modes, Hloov MAC / PHY, Unicast Connectionless Data, thiab lwm yam. Txawm li cas los xij, nws raug kev txom nyem los ntawm ib qho teeb meem loj - kev siv hluav taws xob siab.Vim qhov tsis zoo no, cov khoom siv. siv Bluetooth 3.0 siv ntau lub zog ntau dua li lawv cov neeg ua ntej, ua rau Lub roj teeb luv luv rau cov khoom siv Bluetooth. Raws li qhov tshwm sim, Bluetooth v2.1 tseem nrov nrog cov khoom siv tshiab uas txhawb nqa Bluetooth v3.0.
Bluetooth 4.0
Bluetooth v4.0 tau tso tawm nyob rau hauv 2010 thiab featured bluetooth versions txawv yog qhia kev txhawb nqa rau Bluetooth Tsawg Zog. Thaum lub sij hawm, nws tau ua lag luam li Wibree thiab Bluetooth Smart. Bluetooth 4.0 txhawb nqa tag nrho cov yam ntxwv ntawm cov qauv dhau los, tab sis qhov kev hloov pauv tseem ceeb tshaj plaws yog kev siv hluav taws xob. Namely, BLE cov cuab yeej tuaj yeem siv los ntawm lub xov tooj ntawm tes roj teeb. Yog li tam sim no nws muaj peev xwm los tsim cov khoom siv compact thiab portable uas tuaj yeem khiav tau rau hnub ntawm Bluetooth thev naus laus zis.
Bluetooth v4.1 tau qhia hauv 2013 los txhim kho cov neeg siv kev paub ntxiv. Tam sim no nws tuaj yeem koom ua ke nrog LTE, cov cuab yeej siv tau los txhawb ntau lub zog ib txhij, thiab txhawb kev hloov pauv ntawm cov ntaub ntawv loj.
Cov haujlwm tshiab txhawb nqa los ntawm qhov tshwj xeeb no suav nrog:
- Tsawg Lub Luag Haujlwm Cycle Qhia Tshaj Tawm 802.11n PAL
- Lub sij hawm nrhiav tau txwv
- LE Link Layer Topology
- L2CAP Link-oriented thiab mob siab rau raws nrog credit-based flow control
- Tsheb ciav hlau Nudging thiab Generalized Interlaced Scanning
- Lub sijhawm nrawm rau cov ntaub ntawv tshaj tawm
- Coexistence signaling ntawm mobile wireless kev pab cuam
- Dual hom thiab topology
- Hloov kho suab architecture rau wideband suab kis tau tus mob
Bluetooth v4.2 tau tso tawm xyoo 2014 thiab ua rau Internet ntawm Yam (IoT) ua tau. Cov kev txhim kho tseem ceeb suav nrog:
- Kev ruaj ntseg qis zog txuas nrog cov ntaub ntawv pob ntawv ntev nthuav dav.
- Internet Protocol Support Profile (IPSP) version 6 npaj rau Bluetooth Smart Yam los txhawb lub tsev txuas nrog
- Txuas Layer Privacy nrog txhim kho Scanner Lim Txoj Cai
Bluetooth 5.0
Bluetooth v5.0 tau qhia hauv 2016 los ntawm Bluetooth SIG, tab sis kev txhawb nqa rau cov thev naus laus zis no yog thawj zaug siv los ntawm Sony hauv nws cov khoom siv Xperia XZ Premium. Qhov loj dua bluetooth versions sib txawv yog tus qauv tsom rau kev txhim kho kev sib txuas thiab Internet ntawm Yam (IoT) kev paub los ntawm muab seamless cov ntaub ntawv ntws.
Rau BLE, ob npaug ntawm qhov ceev hauv qhov tawg mus txog 2 Mbps tam sim no tau txais kev txhawb nqa nyob rau hauv ib qho kev txwv uas muaj txog li plaub npaug ntawm qhov ntau ntawm cov tiam dhau los, uas txhais tau hais tias kev lag luam tawm hauv cov ntaub ntawv hloov pauv ceev.
Cov cheeb tsam ntawm kev txhim kho yog:
- Slot Availability Mask (SAM)
- LE Advertising Extensions 2 Mbps PHY rau LE
- LE Long Range
- High Duty Cycle Non-Connectable Advertising
- LE Channel Xaiv Algorithm
Tsis tas li ntawd, muaj qhov txias bluetooth versions sib txawv hu ua 'Dual Audio' tau tshaj tawm uas tso cai rau ob lub Bluetooth sib txawv xws li wireless headphones lossis hais lus mus ua si ib txhij ua suab los ntawm ib tug tib Bluetooth suab streaming ntaus ntawv uas txhawb no version. Nws kuj tseem tuaj yeem tso ob lub suab sib txawv los ntawm tib lub streaming ntaus ntawv mus rau ob yam sib txawv Bluetooth.
Bluetooth v5.3 yog qhov tseeb version, tso tawm xyoo 2022, uas qhia kev txhawb nqa rau cov qauv mesh hierarchy. Txawm hais tias qhov version no tseem tsis tau siv dav, nws yog undoubtedly lub neej yav tom ntej ntawm Bluetooth technology, uas yuav txuas ntxiv txhim kho.
Redmi K50 series los khav theeb kev lag luam thawj Bluetooth V5.3
Cov kev txhim kho tseem ceeb yog:
- Lub kaum sab xis tuaj txog (AoA) thiab lub kaum sab xis ntawm kev tawm mus (AoD) siv rau qhov chaw ntaus ntawv thiab taug qab.
- Tsis tu ncua sync kis ntawm kev tshaj tawm
- GATT caching
- Kev tshaj tawm channel index
Cov kev txhim kho me me muaj xws li:
- Qhia tus cwj pwm rau kev ua txhaum cai
- Kev sib cuam tshuam ntawm QoS thiab flow specification
- ADI teb hauv scan teb cov ntaub ntawv
- Host channel kev faib tawm rau kev tshaj tawm theem nrab
- HCI kev txhawb nqa rau cov yuam sij debug hauv LE Secure Connections
- Hloov tshiab mechanism rau so moos raug
- Tso cai tso saib ntawm SID hauv scan teb cov lus ceeb toom
