{"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\/ro\/blog\/news\/vypusk-otkrytogo-4g-steka-srslte-19-03","title":{"rendered":"Lansarea versiunii deschise a stivei 4G 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\">A avut loc<\/a><\/noindex> lansarea proiectului <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/\">srsLTE 19.03<\/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\"> Biblioteca cu implementarea nivelului fizic al stivei a fost revizuit\u0103 (<noindex>PHY<\/noindex>);\n<li class=\"l\"> \u00cen srsUE (LTE UE, echipamente utilizator, componentele de pe partea utilizatorului necesare pentru conectarea abonatului la re\u021beaua LTE) a fost ad\u0103ugat\u0103 suportul pentru formatul <noindex><a rel=\"nofollow\" href=\"http:\/\/www.gtigroup.org\/faqs\/lte\/2013-11-04\/18.html\">TDD<\/a><\/noindex>  (Time Division Duplex) \u00een plus fa\u021b\u0103 de formatul de distribu\u021bie a frecven\u021belor \u00een canalul FDD (Frequency Division Duplex) deja suportat \u0219i mai frecvent utilizat;\n<li class=\"l\"> \u00cen srsUE a fost ad\u0103ugat\u0103 suportul pentru tehnica de agregare a canalelor de frecven\u021b\u0103 (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Carrier_aggregation\">Carrier Aggregation<\/a><\/noindex>) pentru a cre\u0219te l\u0103\u021bimea de band\u0103 p\u00e2n\u0103 la utilizatorul final;\n<li class=\"l\"> \u00cen srsENB (implementarea sta\u021biei de baz\u0103) \u0219i srsEPC (componentele re\u021belei de baz\u0103) a fost ad\u0103ugat\u0103 suportul pentru mesaje de <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Cellular_network#Broadcast_messages_and_paging\">Paging<\/a><\/noindex>, utilizate \u00een mod obi\u0219nuit pentru stabilirea unui canal de comunicare direct \u00eentre abonat \u0219i sta\u021bia de baz\u0103;\n<li class=\"l\"> \u00cen srsENB a fost ad\u0103ugat\u0103 suportul pentru criptarea traficului abonatului (User-plane encryption). Suportul pentru criptarea traficului de semnal (NAS-plane encryption) a fost implementat anterior;\n<li class=\"l\"> A fost implementat un simulator de canale pentru canalele 3GPP EPA, EVA \u0219i ETU;\n<li class=\"l\"> Pe baza ZeroMQ a fost implementat un driver RF virtual, care asigur\u0103 transmiterea semnalelor I\/Q peste IPC\/re\u021bea.\n<\/ul>\n<\/p>\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 con\u021binutului multimedia \u00een modul 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=50680\">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 19.03, \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 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" 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