I-srsLTE ivula ukukhishwa kwesitaki se-4G 19.09

kwenzeka ukukhululwa kwephrojekthi I-srsLTE 19.09, ethuthukisa isitaki esivulekile sokuthumela izingxenye zenethiwekhi yeselula ye-LTE / 4G ngaphandle kokuba khona kwemishini ekhethekile, kusetshenziswa kuphela ama-transceivers ahlelekayo jikelele, umumo wesiginali nokuguquguquka kwawo okusethwa isoftware (SDR, Software Defined Radio). Ikhodi yephrojekthi kuhlinzekiwe ilayisensi ngaphansi kwe-AGPLv3.

I-SrsLTE включает ukuqaliswa kwe-LTE UE (Izisetshenziswa Zomsebenzisi, izingxenye zeklayenti zokuxhuma obhalisele kunethiwekhi ye-LTE), isiteshi esiyisisekelo se-LTE (i-eNodeB, i-E-UTRAN Node B), kanye nezinto eziyinhloko zenethiwekhi ye-LTE (MME - Inhlangano Yokulawula Ukuhamba ukuze kusetshenziswe iziteshi eziyisisekelo, i-HSS - Iseva Yokubhalisa Ekhaya yokugcina isisekelo sababhalisile kanye nolwazi mayelana nezinsizakalo ezihlobene nababhalisile, i-SGW - Isango Lokusebenzela lokucubungula nokuthungatha amaphakethe eziteshi eziyisisekelo, i-PGW - I-Packet Data Network Gateway yokuxhuma obhalisile kumanethiwekhi angaphandle.

Enguqulweni entsha:

• Usekelo lokuqala lobuchwepheshe bokufinyelela kumsakazo lwenzelwe izendlalelo ze-LTE MAC, RLC kanye ne-PDCP NR (Umsakazo Omusha), owenzelwe amanethiwekhi eselula e-5G;
• Ekusetshenzisweni kwezinga I-NB-IoT (I-Narrowband Internet of Things), esetshenziselwa ukuxhuma amadivayisi azimele we-Inthanethi yezinto kunethiwekhi yeselula, ikhodi yokuvumelanisa yengeziwe;
• Ukwesekwa okwengeziwe kwama-algorithms we-cryptographic I-EIA3 kanye ne-EEA3, ngokusekelwe ku-cipher yokusakaza i-ZUC;
• I-srsENB (ukuqaliswa kwesiteshi esiyisisekelo) manje isekela ubuchwepheshe I-CSFB (I-Circuit Switched FallBack), ekuvumela ukuthi ubuyele emuva ku-3G lapho ushaya ucingo lwezwi uma inethiwekhi ye-LTE isekela kuphela imodi yokudlulisa idatha;
• Kwengezwe isendlalelo ukuze kuqhutshwe izivivinyo ze-TTCN-3 ukuhlola ukuthobelana kwezingxenye ezisetshenziselwa ukuxhuma obhalisile kunethiwekhi ye-LTE;
• Imodeli entsha yokulingisa ukuxhumana kwesitimela esinesivinini esiphezulu yengezwe kusifanisi sesiteshi;
• Izendlalelo ze-RRC kanye ne-NAS zikhululekile ezindleleni zokusebenza ezivinjiwe.

Izici ezibalulekile:

• Uhlelo lungasebenza nanoma yimaphi ama-transceiver ahlelekayo asekelwa i-Ettus UHD (Universal Hardware Driver) namashayeli e-bladeRF futhi ekwazi ukusebenza kumkhawulokudonsa ongu-30.72 MHz. I-srsLTE ihlolwe nge-USRP B210, USRP B205mini, USRP X300, i-limeSDR kanye namabhodi e-bladeRF;
• Idekhoda ethuthukisiwe enesivinini esiphezulu kusetshenziswa imiyalelo ye-Intel SSE4.1/AVX2 ukuze kuzuzwe ukusebenza okungaphezu kuka-100Mbps kuhadiwe evamile. Ukuqaliswa okujwayelekile kwedikhoda ngolimi C, okuhlinzeka ngokusebenza ezingeni lama-25 Mbps;
• Ukuhambisana ngokugcwele nenguqulo 8 yezinga le-LTE nokusekelwa ngokwengxenye kwezinye izici ezivela kunguqulo 9;
• Ukuba khona kokucushwa komsebenzi kumodi yokuhlukaniswa kwamashaneli (FDD);
• Umkhawulokudonsa uhloliwe: 1.4, 3, 5, 10, 15 kanye no-20 MHz;
• Ukusekelwa kwezindlela zokudlulisela 1 (i-antenna eyodwa), i-2 (ukudlulisa ukuhlukahluka), i-3 (CCD) ne-4 (i-multiplexing yendawo evaliwe);
• Isilinganisi esisekelwa i-ZF kanye ne-MMSE ikhodi yefrikhwensi;
• Ukusekelwa kokudala izinsiza zokuletha okuqukethwe kwe-multimedia kumamodi okusakaza nawokusakaza okuningi;
• Amandla okugcina amalogi anemininingwane ngokubhekisela kumazinga kanye nokulahlwa kokulungisa iphutha;
• Uhlelo lokuthwebula iphakethe lezinga le-MAC oluhambisana ne-Wireshark network analyzer;
• Ukutholakala kwamamethrikhi anedatha yokulandela umkhondo kumodi yomugqa womyalo;
• Amafayela okumisa anemininingwane;
• Ukuqaliswa kwe-LTE MAC, RLC, PDCP, RRC, NAS, S1AP kanye nezendlalelo ze-GW.

Source: opennet.ru