{"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\/cs\/blog\/news\/vypusk-otkrytogo-4g-steka-srslte-19-03","title":{"rendered":"Vyd\u00e1n\u00ed otev\u0159en\u00e9ho 4G stacku 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\">Prob\u011bhlo<\/a><\/noindex> uvoln\u011bn\u00ed projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/\">srsLTE 19.03<\/a><\/noindex>, vyv\u00edjej\u00edc\u00ed otev\u0159enou platformu pro nasazen\u00ed komponent\u016f mobiln\u00edch s\u00edt\u00ed LTE\/4G bez pot\u0159eby speci\u00e1ln\u00edho hardwaru, vyu\u017e\u00edvaj\u00edc\u00ed pouze univerz\u00e1ln\u00ed programovateln\u00e9 transceivery, jejich\u017e sign\u00e1lov\u00e1 forma a modulace jsou definov\u00e1ny softwarov\u011b (SDR, Software Defined Radio). K\u00f3d projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\">dod\u00e1v\u00e1 se<\/a><\/noindex> pod licenc\u00ed AGPLv3.<\/p>\n<p>SrsLTE <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48923\">obsahuje<\/a><\/noindex> realizaci LTE UE (User Equipment, klientsk\u00e9 komponenty pro p\u0159ipojen\u00ed u\u017eivatel\u016f k s\u00edti LTE), z\u00e1kladn\u00ed stanice LTE (eNodeB, E-UTRAN Node B), stejn\u011b jako prvky p\u00e1te\u0159n\u00ed s\u00edt\u011b LTE (MME \u2014 Mobility Management Entity pro interakci se z\u00e1kladn\u00edmi stanicemi, HSS \u2014 Home Subscriber Server pro uchov\u00e1v\u00e1n\u00ed datab\u00e1ze p\u0159edplatitel\u016f a informac\u00ed o slu\u017eb\u00e1ch spojen\u00fdch s p\u0159edplatiteli, SGW \u2014 Serving Gateway pro zpracov\u00e1n\u00ed a sm\u011brov\u00e1n\u00ed paket\u016f pro z\u00e1kladn\u00ed stanice, PGW \u2014 Packet Data Network Gateway pro p\u0159ipojen\u00ed u\u017eivatele k extern\u00edm s\u00edt\u00edm. <\/p>\n<p>V nov\u00e9 verzi:<\/p>\n<ul>\n<li class=\"l\"> P\u0159epracov\u00e1na knihovna s implementac\u00ed fyzick\u00e9 vrstvy z\u00e1sobn\u00edku (<noindex>PHY<\/noindex>);\n<li class=\"l\"> Do srsUE (LTE UE, u\u017eivatelsk\u00e1 za\u0159\u00edzen\u00ed, komponenty na stran\u011b u\u017eivatele nutn\u00e9 pro p\u0159ipojen\u00ed \u00fa\u010dastn\u00edka k s\u00edti LTE) byla p\u0159id\u00e1na podpora form\u00e1tu <noindex><a rel=\"nofollow\" href=\"http:\/\/www.gtigroup.org\/faqs\/lte\/2013-11-04\/18.html\">TDD<\/a><\/noindex>  (Time Division Duplex) jako dopln\u011bk k d\u0159\u00edve podporovan\u00e9mu a b\u011b\u017en\u011bj\u0161\u00edmu form\u00e1tu distribuce frekvenc\u00ed v kan\u00e1lu FDD (Frequency Division Duplex);\n<li class=\"l\"> Do srsUE byla p\u0159id\u00e1na podpora techniky agregace nosn\u00fdch frekvenc\u00ed (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Carrier_aggregation\">Carrier Aggregation<\/a><\/noindex>) pro zv\u00fd\u0161en\u00ed propustnosti pro koncov\u00e9ho u\u017eivatele;\n<li class=\"l\"> Do srsENB (implementace z\u00e1kladnov\u00e9 stanice) a srsEPC (komponenty j\u00e1drov\u00e9 s\u00edt\u011b) byla p\u0159id\u00e1na podpora pro \u0161irokop\u00e1smov\u00e1 <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Cellular_network#Broadcast_messages_and_paging\">Pagingov\u00e1 zpr\u00e1vy<\/a><\/noindex>, obvykle pou\u017e\u00edvan\u00e9 k nastaven\u00ed p\u0159\u00edm\u00e9ho komunika\u010dn\u00edho kan\u00e1lu mezi \u00fa\u010dastn\u00edkem a z\u00e1kladnovou stanic\u00ed;\n<li class=\"l\"> Do srsENB byla p\u0159id\u00e1na podpora \u0161ifrov\u00e1n\u00ed dat \u00fa\u010dastn\u00edka (\u0161ifrov\u00e1n\u00ed u\u017eivatelsk\u00e9ho toku). Podpora pro sign\u00e1ln\u00ed provoz (\u0161ifrov\u00e1n\u00ed NAS-plane) byla implementov\u00e1na d\u0159\u00edve;\n<li class=\"l\"> Byl implementov\u00e1n simul\u00e1tor kan\u00e1l\u016f pro 3GPP kan\u00e1ly EPA, EVA a ETU;\n<li class=\"l\"> Na z\u00e1klad\u011b ZeroMQ byl implementov\u00e1n virtu\u00e1ln\u00ed RF ovlada\u010d, kter\u00fd zaji\u0161\u0165uje p\u0159enos sign\u00e1l\u016f I\/Q p\u0159es IPC\/s\u00ed\u0165.\n<\/ul>\n<\/p>\n<p>Hlavn\u00ed funkce:\n<\/p>\n<ul>\n<li class=\"l\"> Syst\u00e9m m\u016f\u017ee pracovat s jak\u00fdmikoli programovateln\u00fdmi transceivery podporovan\u00fdmi ovlada\u010di Ettus UHD (Universal Hardware Driver) a bladeRF, kter\u00e9 jsou schopny pracovat s \u0161\u00ed\u0159kou p\u00e1sma 30,72 MHz. Pr\u00e1ce srsLTE byla testov\u00e1na s deskami USRP B210, USRP B205mini, USRP X300, limeSDR a bladeRF;\n<\/li>\n<li class=\"l\"> Vysokorychlostn\u00ed optimalizovan\u00fd dekod\u00e9r, vyu\u017e\u00edvaj\u00edc\u00ed instrukce Intel SSE4.1\/AVX2 k dosa\u017een\u00ed v\u00fdkonu nad 100 Mbit\/s na b\u011b\u017en\u00e9m hardwaru. Standardn\u00ed implementace dekod\u00e9ru v jazyce C, zaji\u0161\u0165uj\u00edc\u00ed v\u00fdkon na \u00farovni 25 Mbit\/s;\n<\/li>\n<li class=\"l\"> Pln\u00e1 kompatibilita s 8. verz\u00ed LTE standardu a \u010d\u00e1ste\u010dn\u00e1 podpora n\u011bkter\u00fdch funkc\u00ed z 9. verze;\n<\/li>\n<li class=\"l\"> Dostupnost konfigurace pro pr\u00e1ci v re\u017eimu frekven\u010dn\u00edho d\u011blen\u00ed (FDD);\n<\/li>\n<li class=\"l\"> Testovan\u00e9 \u0161\u00ed\u0159ky p\u00e1sma: 1.4, 3, 5, 10, 15 a 20 MHz;\n<\/li>\n<li class=\"l\"> Podpora re\u017eim\u016f p\u0159enosu 1 (single antenna), 2 (transmit diversity), 3 (CCD) a 4 (closed-loop spatial multiplexing);\n<\/li>\n<li class=\"l\"> Ekvaliz\u00e9r s podporou frekven\u010dn\u00edho k\u00f3dov\u00e1n\u00ed ZF a MMSE;\n<\/li>\n<li class=\"l\"> Podpora vytv\u00e1\u0159en\u00ed slu\u017eeb pro doru\u010dov\u00e1n\u00ed multimedi\u00e1ln\u00edho obsahu v re\u017eimu broadcast a multicast;\n<\/li>\n<li class=\"l\"> Mo\u017enost veden\u00ed podrobn\u00fdch log\u016f s vazbou na \u00farovn\u011b a lad\u00edc\u00edmi dumpy;\n<\/li>\n<li class=\"l\"> Syst\u00e9m zachycen\u00ed paket\u016f na \u00farovni MAC, kompatibiln\u00ed se s\u00ed\u0165ov\u00fdm analyz\u00e1torem Wireshark;\n<\/li>\n<li class=\"l\"> Dostupnost metrik s daty pro sledov\u00e1n\u00ed v re\u017eimu p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku;\n<\/li>\n<li class=\"l\"> Podrobn\u00e9 konfigura\u010dn\u00ed soubory;\n<\/li>\n<li class=\"l\"> Implementace \u00farovn\u00ed LTE MAC, RLC, PDCP, RRC, NAS, S1AP a GW.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <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 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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