Yintoni iTekhnoloji ye-NB-IoT?

I-NarrowBand-Intanethi yezinto (i-NB-IoT) iteknoloji entsha engenazingcingo ekhula ngokukhawuleza i-3GPP umgangatho wobugcisa beselula owenziwe kwi-Release 13 ejongene ne-LPWAN (i-Low Power Wide Area Network) iimfuno ze-IoT. Ichazwe njengeteknoloji ye-5G, esemgangathweni yi-3GPP ngo-2016. Yimigangatho-based low power wide area (LPWA) ubuchwepheshe obuphuhliswe ukwenza uluhlu olubanzi lwezixhobo ezintsha ze-IoT kunye neenkonzo. I-NB-IoT iphucula kakhulu ukusetyenziswa kwamandla kwezixhobo zomsebenzisi, umthamo wenkqubo kunye nokusebenza kakuhle kwe-spectrum, ngakumbi kwi-coverage enzulu. Ubomi bebhetri obungaphezulu kweminyaka eyi-10 bunokuxhaswa kuluhlu olubanzi lweemeko zokusetyenziswa.

Iimpawu zomaleko omtsha womzimba kunye neetshaneli ziyilelwe ukuhlangabezana nemfuno efunekayo yokhuselo olwandisiweyo - emaphandleni nangaphakathi ngaphakathi - kunye ne-ultra-low device complexity. Iindleko zokuqala zeemodyuli ze-NB-IoT kulindeleke ukuba zithelekiswe ne-GSM/GPRS. Itekhnoloji esisiseko nangona kunjalo ilula kakhulu kune-GSM/GPRS yanamhlanje kwaye iindleko zayo kulindeleke ukuba zehle ngokukhawuleza njengoko imfuno isanda.

Ukuxhaswa zizo zonke izixhobo eziphambili zeselula, i-chipset kunye nabavelisi beemodyuli, i-NB-IoT inokusebenzisana kunye ne-2G, 3G, kunye ne-4G inethiwekhi yeselula. Ikwaxhamla kulo lonke ukhuseleko kunye neempawu zabucala zothungelwano oluphathwayo, olufana nenkxaso yemfihlo yomsebenzisi, uqinisekiso lwequmrhu, ubumfihlo, imfezeko yedatha, kunye nokuchongwa kwesixhobo esiphathwayo. I-NB-IoT yokuqala yokuqaliswa kwezorhwebo igqityiwe kwaye ukukhutshwa kwehlabathi jikelele kulindeleke kwi-2017/18.

Yintoni uluhlu lwe-NB-IoT?

I-NB-IoT yenza ukuthunyelwa kwezixhobo ezinobunzima obuphantsi ngamanani amakhulu (malunga nama-50 000 udibaniso ngeseli nganye). Uluhlu lweseli lunokuhamba ukusuka kwi-40km ukuya kwi-100km. Oku kuvumela amashishini afana nezinto eziluncedo, ulawulo lwempahla, ulungiselelo kunye nolawulo lwezithuthi ukudibanisa abenzi boluvo, iitraki kunye nezixhobo zokubala ngemitha ngexabiso eliphantsi ngelixa zigubungela indawo ebanzi.

I-NB-IoT ibonelela ngobunzulu (164dB) kunobuninzi beteknoloji yeLPWAN kunye ne-20dB ngaphezu kwe-GSM/GPRS eqhelekileyo.

Zeziphi iingxaki ezisonjululwa yi-NB-IoT?

Le teknoloji yenzelwe ukuhlangabezana nemfuno yokhuselo olwandisiweyo kunye nokusetyenziswa kwamandla aphantsi. Izixhobo zinokusetyenziswa ixesha elide kakhulu kwibhetri enye. I-NB-IoT inokuthunyelwa kusetyenziswa iziseko zoncedo ezikhoyo nezithembekileyo.

I-NB-IoT nayo ineempawu zokhuseleko ezikhoyo kwiinethiwekhi zeselula ze-LTE, ezifana nokukhuselwa komqondiso, ukuqinisekiswa okukhuselekileyo kunye nokubethelwa kwedatha. Isetyenziswe ngokubambisana ne-APN elawulwayo, yenza ulawulo loqhagamshelwano lwesixhobo lube lula kwaye lukhuselekile.