BT 5.2 Bluetooth LE AUDIO Musika
Sezvatinoziva tese, pamberi peBT5.2, Bluetooth odhiyo kutapurirana yakashandisa yakajairika Bluetooth A2DP modhi yekunongedzera-kune-point data kutapurirana. Ikozvino kubuda kweyepasi-simba odhiyo LE Audio yatyora iyo monopoly yeClassic Bluetooth mumusika wekuteerera. Pa2020 CES, SIG yakazivisa zviri pamutemo kuti iyo itsva BT5.2 chiyero inotsigira yekubatanidza-yakavakirwa-imwe-tenzi-akawanda-nhandaredhiyo yekutepfenyura maapplication, senge TWS mahedhifoni, akawanda-mukamuri redhiyo kuwiriranisa, uye kutepfenyura data stream-based transmission, iyo inogona. ichashandiswa zvakanyanya mumakamuri ekumirira, magymnasium, horo dzemisangano, mabhaisikopo nedzimwe nzvimbo dzine yeruzhinji screen audio reception.
BT 5.2 LE Audio kutapurirana musimboti
Iyo Bluetooth LE Isochronous Channels chimiro inzira nyowani yekufambisa data pakati pemidziyo uchishandisa Bluetooth LE, inonzi LE Isochronous Channels. Iyo inopa algorithmic maitiro ekuona kuti akawanda anogashira maturusi anogamuchira data kubva kuna tenzi synchronously. Protocol yayo inotaura kuti yega yega data inotumirwa neBluetooth transmitter ichave nenguva, uye iyo data inotambirwa kubva kumushini mushure menguva inoraswa. Izvi zvinoreva kuti iyo inogamuchira mudziyo inongogashira data mukati meiyo yakakodzera nguva hwindo, nekudaro ichivimbisa kuwiriranisa kwe data inogamuchirwa neakawanda evaranda zvishandiso.
Kuti uone basa idzva iri, BT5.2 inowedzera iyo ISOAL synchronization adaptation layer (Iyo Isochronous Adaptation Layer) pakati peprotocol stack Controller uye Host kupa data stream segmentation uye kuronga patsva masevhisi.
BT5.2 synchronous data kutenderera zvichibva pane LE kubatana
Iyo yekubatanidza-inotungamirwa isochronous chiteshi inoshandisa iyo LE-CIS (LE Yakabatanidzwa Isochronous Stream) nzira yekufambisa kutsigira bidirectional kutaurirana. Mukufambisa kweLE-CIS, chero mapaketi asina kutapurirana mukati menguva yakatarwa hwindo anoraswa. Yekubatanidza-inotungamirwa isochronous chiteshi dhata yekufambisa inopa yekunongedza-kune-kunanzva kutaurirana pakati pemidziyo.
Iyo Yakabatanidzwa Isochronous Mapoka (CIG) modhi inogona kutsigira yakawanda-yakabatana data kutenderera netenzi mumwe uye akawanda varanda. Boka rega rega rinogona kuve nezviitiko zvakawanda zveCIS. Mukati meboka, kune yega yega CIS, pane hurongwa hwekutumira uye kugamuchira nguva slots, inonzi zviitiko uye sub-zviitiko.
Nguva yekuitika kwechiitiko chega chega, inodaidzwa kuti ISO interval, inotsanangurwa mukati menguva ye5ms kusvika 4s. Chiitiko chega chega chakakamurwa kuita chimwe chete kana kupfuura chiitiko chidiki. Muchiitiko chidiki-chinoenderana neiyo synchronous data stream transmission mode, muenzi (M) anotumira kamwe chete nevaranda (s) vachipindura sezvakaratidzwa.
BT5.2 yakavakirwa pakufambiswa kwesynchronous yeasina kubatana kutepfenyura data rwizi
Kusabatana kunoenderana kutaurirana kunoshandisa iyo nhepfenyuro yekubatanidza (BIS Broadcast Isochronous Streams) nzira yekufambisa uye inongotsigira nzira imwe chete yekutaura. Kuwiriranisa kwemugamuchiri kunoda kutanga kuterera data rekutepfenyura AUX_SYNC_IND, nhepfenyuro ine ndima inonzi BIG Info, data iri mundima ino ichashandiswa kuwiriranisa neBIS inodiwa. Iyo itsva LEB-C nhepfenyuro yekudzora inonzwisisika link inoshandiswa kune LL layer link control, senge chiteshi chekuvandudza chiteshi, uye LE-S (STREAM) kana LE-F (FRAME) yekubatanidza chiteshi chinonzwisisika chinozoshandiswa mushandisi data kuyerera uye. data. Mukana mukuru weiyo BIS nzira ndeyekuti data rinogona kuendeswa kune akawanda anogashira synchronously.
Iyo Broadcast isochronous stream uye yeboka modhi inotsigira iyo synchronous kufambisa kweasina-akabatana akawanda-anogamuchira data hova. Zvinogona kuonekwa kuti musiyano mukuru pakati payo neCIG mode ndeyokuti iyi nzira inongotsigira nzira imwe chete yekukurukurirana.
Pfupiso yezvinhu zvitsva zveBT5.2 LE AUDIO:
BT5.2 ichangobva kuwedzerwa controller ISOAL synchronization adaptation layer kutsigira LE AUDIO data stream transmission.
BT5.2 inotsigira dhizaini nyowani yekufambisa kutsigira yekubatanidza-yakatarisana uye isingabatanidzwe kuwirirana kutaurirana.
Kune itsva LE Security Mode 3 iyo inotepfenyurwa yakavakirwa uye inobvumira encryption yedata kuti ishandiswe mumapoka ekutepfenyura sync.
Iyo HCI layer inowedzera huwandu hwemirairo mitsva uye zviitiko zvinobvumira kuwiriranisa kweinodiwa gadziriso uye kutaurirana.
Iyo yekubatanidza layer inowedzera maPDU matsva, kusanganisira akabatana akabatana maPDU uye kutepfenyura synchronization PDUs. LL_CIS_REQ uye LL_CIS_RSP anoshandiswa kugadzira zvinongedzo uye kutonga kuyerera kwekubatanidza.
LE AUDIO inotsigira 1M, 2M, CODED akawanda PHY mitengo.
