{"id":33603,"date":"2019-10-31T21:53:42","date_gmt":"2019-10-31T18:53:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-otkrytogo-4g-steka-srslte-19-03\/"},"modified":"2019-10-31T21:53:42","modified_gmt":"2019-10-31T18:53:42","slug":"vypusk-otkrytogo-4g-steka-srslte-19-03","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-otkrytogo-4g-steka-srslte-19-03","title":{"rendered":"Rilascio del stack 4G open source srsLTE 19.03","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\/releases\/tag\/release_19_03\">Si \u00e8 tenuto<\/a><\/noindex> rilascio del progetto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/\">srsLTE 19.03<\/a><\/noindex>, in fase di sviluppo di un stack open per l'implementazione di componenti di reti cellulare LTE\/4G senza la necessit\u00e0 di attrezzature speciali, utilizzando solo trasmettitori e ricevitori programmabili universali, il cui formato del segnale e modulazione sono definiti tramite software (SDR, Software Defined Radio). Codice del progetto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\">fornito<\/a><\/noindex> \u00e8 sotto licenza AGPLv3.<\/p>\n<p>SrsLTE <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48923\">include<\/a><\/noindex> l'implementazione di LTE UE (User Equipment, componenti client per connettere l'utente alla rete LTE), della stazione base LTE (eNodeB, E-UTRAN Node B), nonch\u00e9 degli elementi della rete di supporto LTE (MME \u2014 Mobility Management Entity per l'interazione con le stazioni base, HSS \u2014 Home Subscriber Server per la conservazione del database degli abbonati e delle informazioni sui servizi associati agli abbonati, SGW \u2014 Serving Gateway per l'elaborazione e il routing dei pacchetti verso le stazioni base, PGW \u2014 Packet Data Network Gateway per connettere l'utente a reti esterne. <\/p>\n<p>Nella nuova versione:<\/p>\n<ul>\n<li class=\"l\"> Rivisitata la libreria con l'implementazione del livello fisico dello stack (<noindex>PHY<\/noindex>);\n<li class=\"l\"> In srsUE (LTE UE, User Equipment, componenti lato utente necessari per connettere l'utente alla rete LTE) \u00e8 stata aggiunta la supporto per il formato <noindex><a rel=\"nofollow\" href=\"http:\/\/www.gtigroup.org\/faqs\/lte\/2013-11-04\/18.html\">TDD<\/a><\/noindex>  (Time Division Duplex) in aggiunta al formato di distribuzione delle frequenze pi\u00f9 comunemente supportato nel canale FDD (Frequency Division Duplex);\n<li class=\"l\"> In srsUE \u00e8 stata aggiunta la supporto per la tecnologia di aggregazione dei canali di frequenza (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Carrier_aggregation\">Carrier Aggregation<\/a><\/noindex>) per aumentare la larghezza di banda fino all'utente finale;\n<li class=\"l\"> In srsENB (implementazione della stazione base) e srsEPC (componenti della rete core) \u00e8 stata aggiunta la supporto per i messaggi di broadcast <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Cellular_network#Broadcast_messages_and_paging\">Paging-messaggi<\/a><\/noindex>, normalmente utilizzati per stabilire un canale di comunicazione diretto tra l'utente e la stazione base;\n<li class=\"l\"> In srsENB \u00e8 stata aggiunta la supporto per la crittografia del traffico dell'utente (crittografia del piano utente). Il supporto per il traffico di segnalazione (crittografia del piano NAS) \u00e8 stato implementato in precedenza;\n<li class=\"l\"> Realizzato un simulatore di canali per i canali 3GPP EPA, EVA e ETU;\n<li class=\"l\"> Basato su ZeroMQ, \u00e8 stato implementato un driver RF virtuale che consente la trasmissione di segnali I\/Q su IPC\/rete.\n<\/ul>\n<\/p>\n<p>Caratteristiche principali:\n<\/p>\n<ul>\n<li class=\"l\"> Il sistema pu\u00f2 funzionare con qualsiasi trasmettitore e ricevitore programmabile supportato dai driver Ettus UHD (Universal Hardware Driver) e bladeRF, in grado di operare con una larghezza di banda di 30.72 MHz. Il funzionamento di srsLTE \u00e8 stato testato su schede USRP B210, USRP B205mini, USRP X300, limeSDR e bladeRF;\n<\/li>\n<li class=\"l\"> Un decodificatore ottimizzato ad alta velocit\u00e0 che utilizza le istruzioni Intel SSE4.1\/AVX2 per ottenere prestazioni superiori a 100 Mbit\/s su hardware comune. Implementazione standard del decodificatore in linguaggio C, che offre prestazioni di 25 Mbit\/s;\n<\/li>\n<li class=\"l\"> Compatibilit\u00e0 totale con la versione 8 dello standard LTE e supporto parziale per alcune funzionalit\u00e0 della versione 9;\n<\/li>\n<li class=\"l\"> Configurazione disponibile per operare in modalit\u00e0 di divisione di frequenza (FDD);\n<\/li>\n<li class=\"l\"> Bande di frequenza testate: 1.4, 3, 5, 10, 15 e 20 MHz;\n<\/li>\n<li class=\"l\"> Supporto per modalit\u00e0 di trasmissione 1 (antenna singola), 2 (diversit\u00e0 di trasmissione), 3 (CCD) e 4 (multiplexing spaziale a loop chiuso);\n<\/li>\n<li class=\"l\"> Equalizzatore con supporto per codificazione della frequenza ZF e MMSE;\n<\/li>\n<li class=\"l\"> Supporto per la creazione di servizi per la consegna di contenuti multimediali in modalit\u00e0 broadcast e multicast;\n<\/li>\n<li class=\"l\"> Possibilit\u00e0 di registrare log dettagliati con collegamenti a livelli e dump di debug;\n<\/li>\n<li class=\"l\"> Sistema di acquisizione pacchetti a livello MAC, compatibile con l'analizzatore di rete Wireshark;\n<\/li>\n<li class=\"l\"> Disponibilit\u00e0 di metriche con dati di tracciamento in modalit\u00e0 riga di comando;\n<\/li>\n<li class=\"l\"> File di configurazione dettagliati;\n<\/li>\n<li class=\"l\"> Implementazione dei livelli LTE MAC, RLC, PDCP, RRC, NAS, S1AP e GW.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50680\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 srsLTE 19.03, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u0441\u0442\u0435\u043a \u0434\u043b\u044f \u0440\u0430\u0437\u0432\u0451\u0440\u0442\u044b\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0441\u043e\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0442\u0435\u0439 LTE\/4G \u0431\u0435\u0437 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0441\u043f\u0435\u0446\u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u044b\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u0443\u0435\u043c\u044b\u0435 \u043f\u0440\u0438\u0435\u043c\u043e\u043f\u0435\u0440\u0435\u0434\u0430\u0442\u0447\u0438\u043a\u0438, \u0444\u043e\u0440\u043c\u0430 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0438 \u043c\u043e\u0434\u0443\u043b\u044f\u0446\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0437\u0430\u0434\u0430\u0451\u0442\u0441\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e (SDR, Software Defined Radio). \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 AGPLv3. SrsLTE \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e LTE UE (User Equipment, \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0430\u0431\u043e\u043d\u0435\u043d\u0442\u0430 \u043a \u0441\u0435\u0442\u0438 LTE), \u0431\u0430\u0437\u043e\u0432\u043e\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-33603","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" 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