BT 5.2 Bluetooth LE AUDIO Market
Njengoko sonke siyazi, ngaphambi kwe-BT5.2, ukuhanjiswa komsindo weBluetooth kusetyenziswa imowudi yeBluetooth ye-A2DP yakudala yokuhanjiswa kwedatha. Ngoku ukuvela komsindo ophantsi wamandla we-LE Audio uye waphula imonopoly yeBluetooth yakudala kwimarike yomsindo. Kwi-CES ka-2020, i-SIG yabhengeza ngokusemthethweni ukuba umgangatho omtsha we-BT5.2 uxhasa unxibelelwano olusekelwe kwi-master-multi-slave audio streaming applications, njengee-headphones ze-TWS, ungqamaniso lweaudio enamagumbi amaninzi, kunye nosasazo olusekwe kumjelo wedatha. zisetyenziswe ngokubanzi kumagumbi okulinda, iindawo zokuzilolonga, iiholo zenkomfa, iicinema kunye nezinye iindawo ezinolwamkelo lomsindo wesikrini sikawonke-wonke.
BT 5.2 LE Umgaqo wokuhanjiswa kweAudio
I-Bluetooth LE Isochronous Channels isici yindlela entsha yokudlulisa idatha phakathi kwezixhobo usebenzisa i-Bluetooth LE, ebizwa ngokuba yi-LE Isochronous Channels. Ibonelela ngendlela ye-algorithmic yokuqinisekisa ukuba izixhobo ezininzi zabamkeli zifumana idatha kwi-master synchronously. Iprothokholi yayo imisela ukuba isakhelo ngasinye sedatha esithunyelwe yiBluetooth transmitter siya kuba nexesha, kwaye idatha efunyenwe kwisixhobo emva kwexesha iya kulahlwa. Oku kuthetha ukuba isixhobo somamkeli sifumana kuphela idatha ngaphakathi kwexesha elisebenzayo lefestile, ngaloo ndlela iqinisekisa ungqamaniso lwedatha efunyenwe ngamakhoboka amaninzi.
Ukuze uqonde lo msebenzi mtsha, i-BT5.2 yongeza i-ISOAL yokuvumelanisa ulungelelwaniso umaleko (I-Isochronous Adaptation Layer) phakathi koMlawuli we-protocol stack kunye ne-Host ukubonelela ngecandelo le-data stream kunye neenkonzo zokuhlengahlengiswa.
I-BT5.2 i-synchronous data streaming esekelwe kuqhagamshelo lwe-LE
Ijelo le-isochronous elijoliswe ekudibaneni lisebenzisa i-LE-CIS (LE Connected Isochronous Stream) indlela yokuhambisa ukuxhasa unxibelelwano lwe-bidirectional. Kuthumelo lwe-LE-CIS, naziphi na iipakethi ezingathunyelwanga ngexesha elichaziweyo lefestile ziya kulahlwa. Ukuhanjiswa kwedatha yeshaneli ye-isochronous ejolise kunxibelelwano ibonelela ngonxibelelwano oluhambelanayo phakathi kwezixhobo.
Imodi ye-Connected Isochronous Groups (CIG) inokuxhasa ukuhanjiswa kwedatha eninzi edibeneyo kunye nenkosi enye kunye namakhoboka amaninzi. Iqela ngalinye linokuqulatha iimeko ezininzi zeCIS. Ngaphakathi kweqela, kwi-CIS nganye, kukho ishedyuli yokuhambisa kunye nokufumana ixesha lokubeka, elibizwa ngokuba yiziganeko kunye neziganeko ezingaphantsi.
Ithuba lokwenzeka kwesiganeko ngasinye, elibizwa ngokuba lithuba le-ISO, lichazwa kuluhlu lwexesha lwe-5ms ukuya kwi-4s. Isiganeko ngasinye sahlulwe saba sisiganeko esinye okanye ngaphezulu. Kwi-sub-event esekelwe kwi-synchronous data stream transmission mode, inginginya (M) ithumela kanye kunye nekhoboka (s) ukuphendula njengoko kubonisiwe.
I-BT5.2 esekwe kwi-synchronous transmission yokusasazwa konxibelelwano lwedatha
Unxibelelwano olungenalunxibelelwano lwe-synchronous lusebenzisa ulungelelwaniso losasazo (i-BIS Broadcast Isochronous Streams) indlela yokuhambisa kwaye ixhasa kuphela unxibelelwano lwendlela enye. Umamkeli ungqamaniso kufuneka baqale baphulaphule umamkeli AUX_SYNC_IND data yosasazo, usasazo luqulathe indawo ebizwa BIG Ulwazi, idatha equlethwe kulo mmandla iya kusetyenziselwa ungqamaniso kunye neBIS efunekayo. Ikhonkco elitsha lolawulo losasazo lwe-LEB-C lisetyenziselwa ulawulo lwekhonkco lwe-LL, njengohlaziyo lwetshaneli, kunye ne-LE-S (STREAM) okanye i-LE-F (iFRAME) ungqamaniso lwesiqhagamshelanisi esinengqiqo siya kusetyenziselwa ukuhamba kwedatha yomsebenzisi kunye idatha. Inzuzo enkulu yendlela ye-BIS kukuba idatha inokudluliselwa kubamkeli abaninzi ngokulandelelana.
I-Broadcast isochronous stream kunye nemodi yeqela ixhasa ukuhanjiswa kwe-synchronous ye-multi-receiver data streams engadityaniswanga. Ingabonwa ukuba umahluko omkhulu phakathi kwayo kunye nemodi yeCIG kukuba le ndlela ixhasa kuphela unxibelelwano lwendlela enye.
Isishwankathelo sezinto ezintsha ze-BT5.2 LE AUDIO:
I-BT5.2 isilawuli esandula ukongeza ISOAL ulungelelwaniso ulungelelwaniso umaleko ukuxhasa LE AUDIO ukuhanjiswa kwedatha.
I-BT5.2 ixhasa ulwakhiwo olutsha lwezothutho ukuxhasa unxibelelwano olujoliswe ekudibaneni kunye nonxibelelwano oluhambelanayo.
Kukho iNdlela yoKhuseleko ye-LE entsha ye-LE esasazwa ngokusekwe kwaye ivumela ukufihlwa kwedatha ukuba isetyenziswe kumaqela okuvumelanisa usasazo.
Umaleko weHCI wongeza inani lemiyalelo emitsha kunye neziganeko ezivumela ulungelelwaniso loqwalaselo olufunekayo kunye nonxibelelwano.
Uluhlu lwekhonkco longeza ii-PDU ezintsha, kubandakanywa ii-PDU ezidityanisiweyo ezidityanisiweyo kunye nee-PDU zokuvumelanisa usasazo. I-LL_CIS_REQ kunye ne-LL_CIS_RSP zisetyenziselwa ukudala imidibaniso kunye nokulawula ukuhamba kongqamaniso.
I-LE AUDIO ixhasa i-1M, 2M, CODED amaxabiso amaninzi e-PHY.
