Tus txheej txheem ua haujlwm ntawm Bluetooth hauv cov ntaub ntawv kis tau yog raws li hauv qab no:
1. Cov qhab nia ua haujlwm thiab cov channel
Bluetooth ua haujlwm nyob rau ntawm 2.4GHz Ism Band. Cov Bluetooth classic muaj 79 raws (nrog 1mHz bandwidth), thaum tsawg {} Lub hwj chim Bluetooth muaj 40 raws (nrog 2MHz bandwidth). Los ntawm kev yoog cov ntxeem tau muaj zog, ob qho kev sib txuas lus ob tog dhia 1,600 zaug ib ob ntawm cov kev cuam tshuam kom tsis txhob cuam tshuam.
2. Qauv Qauv
Gausussian zaus ua haujlwm hloov cov yuam sij (GFSK) thev naus laus zis tau saws los hloov cov cim qhia hauv xov tooj cua. Classic Bluetooth sawv cev "0" thiab "1 los ntawm cov cab kuj ua pa tawm, thaum tsawg} lub hwj chim Bluetooth muaj kev tawm tsam ± 185khz.
3. Cov ntaub ntawv pob ntawv hom
Cov pob ntawv Bluetooth muaj cov chaw nyob muaj npe, cov khoom lag luam, cov ntaub ntawv me me thiab CRC daim tshev, nrog ntau tshaj ntawm 357 bytes. Qhov qes - Lub Hwj Chim Bluetooth Cov Pob Ntawv Cov Ntaub Ntawv muaj ua ntej {3} qhov chaw nyob ua ntej, cov ntaub ntawv me me thiab CRC qhov siab tshaj plaws ntawm 261 bytes.
4. Networking hom
Kev tau txais Bluetooth Adops tus tswv - Cov khoom siv qhev, nrog cov cuab yeej ua kom sib txuas tau sib txuas rau xya tus qhev ua haujlwm feem ntau. Low-power Bluetooth supports point-to-point, broadcast and Mesh networking. Mesh kev sib koom tes tuaj yeem ua tiav ntau - rau - Ntau yam sib txuas lus.
5. Hloov cov txheej txheem
- Ntaus Tshawb Nrhiav:Lub cuab yeej tsis ua haujlwm hauv xov tooj yog cov ntaub ntawv qhia txog cov ntaub ntawv, uas yog scanned thiab sau los ntawm lwm cov khoom siv.
- Tsim kom muaj kev sib txuas:Ob tog sib tham tsis xws li cov channel, raws tu qauv, thiab tus yuam sij.
- Cov ntaub ntawv kis tau:Cov ntaub ntawv yog encapsulated los ntawm kev sib txuas ntawm kev sib txuas thiab kev yoog raws li kev cai (l2cap), txhawb nqa ntu ntu thiab qos tswj.
- Disconnect:Tso cov peev txheej thiab xaus kev sib tham.
Bluetooth ua tiav luv luv - ntau thiab qis {{{1} {} siv cov txheej txheem sib faib los ntawm cov suab, hauv internet.
