Kunamakhithi amaningi asuselwa ku-SBC Ukusajingijolo Pi, noma ebhodini lentuthuko I-Arduino. Kusuka kokunye okumiselwe ukudala okwakho ama-retro consoles, ngisho nabanye yama-laptops, imishini ukugqekezwa, njll. Uma kwenzeka kuba Iphrojekthi yeLibreCellular bafuna ukuqhubeka nokujoyina inkathi yamadivayisi eselula namanethiwekhi angenazintambo asheshayo asebenzisa i-hardware yamahhala nesoftware.
ILibreCellular ihlose ukwenza lula ukuxhumana kwezingcingo eziphathwayo kususelwa ku- Ubuchwepheshe be-4G LTE, usebenzisa isoftware yomthombo ovulekile ne-hardware. Ngalokhu zisuselwa ku-SDR (Isoftware Echazwe Ngomsakazo), uhlelo lwe-radiocommunication lapho izingxenye ezahlukahlukene ezenziwa ngokomzimba zithathelwa indawo yisoftware.
Umgomo weLibreCellular
ILibreCellular inenye inhloso, hhayi nje ukuthi ukusetshenziswa kwe- inethiwekhi yakho yedatha yeselula iyasebenza, kepha futhi nokuthi ungayakha ngezindleko eziphansi. Ngakolunye uhlangothi, baphinde bafaka lolu hlelo ezivivinyweni ezinzima kakhulu ukuqinisekisa ukuthi lusebenza kahle, futhi balunikeze amathuluzi nemibhalo yabathuthukisi abazobadinga.
Zonke izakhi okuzokwakhiwa ngazo lo msebenzi zizoba ngaphansi kwamalayisense womthombo ovulekile, futhi amanye amamojula kulindeleke ukuthi afike ukuze aqhubeke nokuqedela lo msebenzi. Okuthile okugxila kuyo yonke imizamo ekuhlanganisweni, ekuhlolweni, ekupakisheni nasekubhalweni kwemibhalo ukuyenza ibe yiphrojekthi evuselelekayo nokwenza izixazululo ezahlukahlukene ngendlela eguqukayo.
Umsebenzi wokuqala weLibreCellular kuzoba ukwethula i- ipulatifomu yokuhlanganisa okuqhubekayo (CI). Lokho wukuthi, dala ipulatifomu yentuthuko lapho abathuthukisi bangahlanganisa ushintsho lwekhodi yomthombo endaweni yokugcina emaphakathi kanye / noma ekubuyekezweni kwehadiwe.
Kuzokwenziwa nemizamo yokuqedela isiteshi esiyisisekelo se-SDR semvamisa yomsakazo kanye nokuxhumana ngocingo kwalawa manethiwekhi, kanye nokwakha imishini edingekayo yokuhlola, inethiwekhi yokusabalalisa i-RF, namabhange Amamodemu we-LTE wokuxhuma. Lapho ingqalasizinda yonke isisebenza, ukugxila kuzodlulela kokungenhla: ukuhlanganiswa kwesitaki samaselula, ukupakisha, kanye nemibhalo.
Izici zeProjekthi
Iphrojekthi yeLibreCellular yakhiwe izingxenye zezingxenyekazi zekhompiyutha nezesoftware, njengoba ngishilo ekuqaleni. Konke okudingayo ukunikela nge- insizakalo yedatha eyisisekelo ye-LTE nokusekelwa nakho kwezingcingo zezwi. Ukuze lokhu kwenzeke, izingxenye ezilandelayo zidinga ukuhlanganiswa:
- Ipulatifomu ye-Hardware CI- Esiteshini sesisekelo esinamabhange emodemu we-LTE ngenethiwekhi ye-RF enentambo, ngesilinganiso se-RF, ukulawula nokusabalalisa iwashi okuyireferensi.
- Ukucushwa nokuhlolwa: izokwenziwa ngokusebenzisa isoftware I-OsmoGMTester, futhi ukufakwa kuzonwetshwa njengoba intuthuko iguquka. Ngamanye amagama, izosuka kusevisi eyisisekelo lapho amanye amadivayisi eselula abhalisile angaxhunyaniswa khona nesevisi ephelele nge-VoLTE yokushaya amandla wezwi ngenxa yohlelo lwe-IP multimedia (IMS).
- Ukufakwa kwesoftware: yonke le hardware izohambisana nesoftware evumela ukuxhumana.
- Ipulatifomu yesithenjwa sehadiwe- Lokhu kuzoba inhloso ebalulekile njengoba kuzokonga isikhathi esiningi ukuthola abasebenzisi abasha futhi kuzokwenza kube lula ukuxazulula izinkinga zehadiwe.
- Ukusebenza kwe-baseband: kusetshenziswa i-SBC I-Intel NUC7i7DNBE ukusebenzisa i-baseband nezendlalelo ezingaphezulu zesitaki esihambayo.
- Izingxenyekazi zekhompyutha ze-SDR: lapho kukhethelwe ipuleti I-LimeSDR-USB.
- Isibonisi se-RF: kumvamisa womsakazo iphrojekthi izosetshenziswa I-LimeRFE ezohlinzeka nge-multiband RF ephelele-phambili ne-LNA, PA kanye ne-duplexers. Ngaphezu kwalokho, inikezela ngokukhishwa okulungisiwe ku-24 dBm kumabhendi ahambayo 1, 2, 3, 4 no-5.
- Bheka inkomba: iwashi lesethenjwa elizosetshenziswa yiLimeSDR, a I-GPS Leo Bodnar Mini Precision ukwenza ngcono ukuzinza nokunemba kwesiginali.
Imininingwane engaphezulu - Iwebhu Esemthethweni