{"id":39175,"date":"2019-10-31T22:28:16","date_gmt":"2019-10-31T19:28:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-otkrytogo-4g-steka-srslte-19-09\/"},"modified":"2019-10-31T22:28:16","modified_gmt":"2019-10-31T19:28:16","slug":"vypusk-otkrytogo-4g-steka-srslte-19-09","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/vypusk-otkrytogo-4g-steka-srslte-19-09","title":{"rendered":"Lansarea stivei 4G deschise srsLTE 19.09","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\/releases\/tag\/release_19_09\">A avut loc<\/a><\/noindex> lansarea proiectului <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/\">srsLTE 19.09<\/a><\/noindex>, dezvolt\u00e2nd un stack deschis pentru desf\u0103\u0219urarea componentelor re\u021belelor mobile LTE\/4G f\u0103r\u0103 echipamente speciale, folosind doar receptoare \u0219i emi\u021b\u0103toare programabile universale, ale c\u0103ror form\u0103 de semnal \u0219i modulare sunt definite software (SDR, Software Defined Radio). Codul proiectului <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\">este livrat<\/a><\/noindex> sub licen\u021ba AGPLv3.<\/p>\n<p>SrsLTE <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48923\">include<\/a><\/noindex> implementarea LTE UE (Echipamente de Utilizator, componente de client pentru conectarea abona\u021bilor la re\u021beaua LTE), sta\u021biile de baz\u0103 LTE (eNodeB, E-UTRAN Node B), precum \u0219i elementele re\u021belei de baz\u0103 LTE (MME \u2014 Entitatea de Management al Mobilit\u0103\u021bii pentru interac\u021biunea cu sta\u021biile de baz\u0103, HSS \u2014 Serverul Abona\u021bilor de Acas\u0103 pentru stocarea bazei de date a abona\u021bilor \u0219i informa\u021biile despre serviciile asociate abona\u021bilor, SGW \u2014 Gateway-ul de Servire pentru procesarea \u0219i rutarea pachetelor pentru sta\u021biile de baz\u0103, PGW \u2014 Gateway-ul de Date Pachet pentru conectarea abona\u021bilor la re\u021bele externe. <\/p>\n<p>\u00cen noua versiune:<\/p>\n<ul>\n<li class=\"l\"> Pentru nivelurile LTE MAC, RLC \u0219i PDCP a fost implementat un suport ini\u021bial pentru tehnologia de acces radio <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/5G_NR\">NR<\/a><\/noindex> (New Radio), dezvoltat\u0103 pentru re\u021belele mobile 5G;\n<li class=\"l\"> \u00cen implementarea standardului <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/NB_IoT\">NB-IoT<\/a><\/noindex> (Narrowband Internet of Things), utilizat pentru conectarea de dispozitive autonome la re\u021beaua mobil\u0103 de internet a lucrurilor, a fost ad\u0103ugat cod pentru sincronizare;\n<li class=\"l\"> A fost ad\u0103ugat suport pentru algoritmi criptografici  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.semanticscholar.org\/paper\/The-New-LTE-Cryptographic-Algorithms-EEA3-and-EIA3-Orhanou-Elhajji\/601127d28c86cc45377ad3902a35ff1de7016e6c\">EIA3 \u0219i EEA3<\/a><\/noindex>, bazat pe cifra de flux ZUC;\n<li class=\"l\"> \u00cen srsENB (implementarea sta\u021biei de baz\u0103) a ap\u0103rut suport pentru tehnologia <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/long-term-evolution\/lte-to-3g-circuit-switched-fallback-csfb-74dc5a322d53\">CSFB<\/a><\/noindex> (Circuit Switched FallBack), care permite revenirea la 3G \u00een timpul unui apel vocal, dac\u0103 re\u021beaua LTE suport\u0103 doar modul de transmitere a datelor;\n<li class=\"l\"> A fost ad\u0103ugat un strat pentru rularea testelor TTCN-3 pentru verificarea conformit\u0103\u021bii standardului componentelor utilizate pentru conectarea utilizatorului la re\u021beaua LTE;\n<li class=\"l\"> \u00cen simulatorul de canale a fost ad\u0103ugat\u0103 un nou model de simulare a conexiunii \u00een trenurile de mare vitez\u0103;\n<li class=\"l\"> Straturile RRC \u0219i NAS au fost eliberate de modurile de operare blocante.\n<\/ul>\n<p>Func\u021bionalit\u0103\u021bi principale:\n<\/p>\n<ul>\n<li class=\"l\"> Sistemul poate func\u021biona cu orice receptoare \u0219i emi\u021b\u0103toare programabile, suportate de driverele Ettus UHD (Universal Hardware Driver) \u0219i bladeRF \u0219i capabile s\u0103 func\u021bioneze cu o l\u0103\u021bime de band\u0103 de 30.72 MHz. Func\u021bionarea srsLTE a fost testat\u0103 cu pl\u0103ci USRP B210, USRP B205mini, USRP X300, limeSDR \u0219i bladeRF;\n<\/li>\n<li class=\"l\"> Decodor optimizat de mare vitez\u0103, utiliz\u00e2nd instruc\u021biuni Intel SSE4.1\/AVX2 pentru a ob\u021bine o performan\u021b\u0103 de peste 100 Mbit\/s pe echipamente standard. Implementarea standard a decodorului \u00een limbajul C asigur\u0103 o performan\u021b\u0103 de 25 Mbit\/s;\n<\/li>\n<li class=\"l\"> Compatibilitate complet\u0103 cu versiunea 8 a standardului LTE \u0219i suport par\u021bial pentru unele caracteristici din versiunea 9;\n<\/li>\n<li class=\"l\"> Disponibilitatea configura\u021biei pentru operarea \u00een modul de \u00eemp\u0103r\u021bire de frecven\u021b\u0103 (FDD);\n<\/li>\n<li class=\"l\"> Bande de l\u0103\u021bime de band\u0103 testate: 1.4, 3, 5, 10, 15 \u0219i 20 MHz;\n<\/li>\n<li class=\"l\"> Suport pentru modurile de transmisie 1 (antena unic\u0103), 2 (diversitate de transmisie), 3 (CCD) \u0219i 4 (multiplexare spa\u021bial\u0103 \u00een bucl\u0103 \u00eenchis\u0103);\n<\/li>\n<li class=\"l\"> Equalizator cu suport pentru codificarea frecven\u021bei ZF \u0219i MMSE;\n<\/li>\n<li class=\"l\"> Suport pentru crearea de servicii pentru livrarea de con\u021binut multimedia \u00een modurile broadcast \u0219i multicast;\n<\/li>\n<li class=\"l\"> Posibilitatea de a men\u021bine jurnaluri detaliate cu asociere la niveluri \u0219i dump-uri de depanare;\n<\/li>\n<li class=\"l\"> Sistem de captur\u0103 a pachetelor la nivel MAC, compatibil cu analizorul de re\u021bea Wireshark;\n<\/li>\n<li class=\"l\"> Disponibilitatea metricilor cu date de urm\u0103rire \u00een modul linie de comand\u0103;\n<\/li>\n<li class=\"l\"> Fi\u0219iere de configurare detaliate;\n<\/li>\n<li class=\"l\"> Implementarea nivelurilor LTE MAC, RLC, PDCP, RRC, NAS, S1AP \u0219i GW.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Sursa: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51720\">opennet.ro<\/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 19.09, \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-39175","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" 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