{"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\/da\/blog\/news\/vypusk-otkrytogo-4g-steka-srslte-19-09","title":{"rendered":"Utgivelsen av den \u00e5pne 4G-stakken 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\">Har fundet sted<\/a><\/noindex> projektudgivelse <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/\">srsLTE 19.09<\/a><\/noindex>, der udvikler en \u00e5ben stak til implementering af komponenter i LTE\/4G mobilnet uden specielt udstyr, udelukkende ved hj\u00e6lp af universelle, programmerbare modtagere, hvor signalform og modulering defineres programm\u00e6ssigt (SDR, Software Defined Radio). Projektkode <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/srsLTE\/srsLTE\">leveres<\/a><\/noindex> under AGPLv3-licensen.<\/p>\n<p>SrsLTE <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48923\">omfatter<\/a><\/noindex> implementeringen af LTE UE (User Equipment, klientkomponenter til at forbinde abonnenten til LTE-netv\u00e6rket), LTE-basenstationen (eNodeB, E-UTRAN Node B) samt elementerne i LTE-backbonen (MME - Mobility Management Entity til interaktion med basestationer, HSS - Home Subscriber Server til lagring af abonnentdata og information om tilknyttede tjenester, SGW - Serving Gateway til behandling og routing af pakker til basestationer, PGW - Packet Data Network Gateway til at forbinde abonnenten til eksterne netv\u00e6rk. <\/p>\n<p>I den nye version:<\/p>\n<ul>\n<li class=\"l\"> For LTE MAC, RLC og PDCP-niveauer er der implementeret f\u00f8rste st\u00f8tte til radiotilgangsteknologien <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/5G_NR\">NR<\/a><\/noindex> (New Radio), udviklet til mobile netv\u00e6rk 5G;\n<li class=\"l\"> I implementeringen af standarden <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/NB_IoT\">NB-IoT<\/a><\/noindex> (Narrowband Internet of Things), som bruges til tilslutning af autonome enheder til mobilnetv\u00e6rket, er der tilf\u00f8jet kode til synkronisering;\n<li class=\"l\"> Tilf\u00f8jet st\u00f8tte til kryptografiske algoritmer  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.semanticscholar.org\/paper\/The-New-LTE-Cryptographic-Algorithms-EEA3-and-EIA3-Orhanou-Elhajji\/601127d28c86cc45377ad3902a35ff1de7016e6c\">EIA3 og EEA3<\/a><\/noindex>, baseret p\u00e5 str\u00f8mkrypteringen ZUC;\n<li class=\"l\"> I srsENB (implementeringen af basestationen) er der tilf\u00f8jet st\u00f8tte til teknologien <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), der g\u00f8r det muligt at falde tilbage til 3G under et stemmeopkald, hvis LTE-netv\u00e6rket kun underst\u00f8tter datatilstand;\n<li class=\"l\"> Tilf\u00f8jet lag til k\u00f8rsel af TTCN-3 tests for at verificere overholdelse af standard for komponenter, der bruges til at forbinde abonnenter til LTE-netv\u00e6rket;\n<li class=\"l\"> I kanal simulatoren er der tilf\u00f8jet en ny model til at simulere forbindelse i h\u00f8jhastighedstog;\n<li class=\"l\"> De blokerende driftsformer for RRC- og NAS-lagene er blevet elimineret.\n<\/ul>\n<p>Hovedfunktioner:\n<\/p>\n<ul>\n<li class=\"l\"> Systemet kan arbejde med alle programmerbare modtagere, der underst\u00f8ttes af driverne fra Ettus UHD (Universal Hardware Driver) og bladeRF og som kan operere p\u00e5 en b\u00e5ndbredde p\u00e5 30,72 MHz. SrsLTE's drift er testet med kortene USRP B210, USRP B205mini, USRP X300, limeSDR og bladeRF;\n<\/li>\n<li class=\"l\"> En h\u00f8jhastighedsoptimeret dekoder, der bruger Intel SSE4.1\/AVX2 instruktioner for at opn\u00e5 en ydelse p\u00e5 over 100 Mbit\/s p\u00e5 standardudstyr. Den standardiserede implementering af dekoderen p\u00e5 C-sprog sikrer en ydelse p\u00e5 25 Mbit\/s;\n<\/li>\n<li class=\"l\"> Fuld kompatibilitet med LTE-standardens version 8 og delvis support for nogle funktioner fra version 9;\n<\/li>\n<li class=\"l\"> Konfiguration til at arbejde i frekvensdelingstilstand (FDD);\n<\/li>\n<li class=\"l\"> Testede b\u00e5ndbredder: 1.4, 3, 5, 10, 15 og 20 MHz;\n<\/li>\n<li class=\"l\"> Underst\u00f8ttelse af transmissionsmetoder 1 (single antenna), 2 (transmit diversity), 3 (CCD) og 4 (closed-loop spatial multiplexing);\n<\/li>\n<li class=\"l\"> Equalizer med st\u00f8tte til frekvenskodning ZF og MMSE;\n<\/li>\n<li class=\"l\"> Underst\u00f8ttelse af oprettelse af tjenester til levering af multimediainhold i broadcast- og multicast-tilstande;\n<\/li>\n<li class=\"l\"> Mulighed for at f\u00f8re detaljerede logfiler med tilknytning til niveauer og debug dumps;\n<\/li>\n<li class=\"l\"> Pakkeoptagelsessystem p\u00e5 MAC-niveau, kompatibelt med netv\u00e6rksanalysatoren Wireshark;\n<\/li>\n<li class=\"l\"> Tilg\u00e6ngelighed af metrikker med sporingsdata i kommandolinjetilstand;\n<\/li>\n<li class=\"l\"> Detaljerede konfigurationsfiler;\n<\/li>\n<li class=\"l\"> Implementering af niveauer LTE MAC, RLC, PDCP, RRC, NAS, S1AP og GW.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51720\">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 19.09, \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 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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