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Mwepụta nke oghere 4G mepere emepe srsLTE 19.09

mere ntọhapụ oru ngo srsLTE 19.09, nke na-emepe oghere mepere emepe maka ibuga akụrụngwa nke netwọkụ cellular LTE/4G na-enweghị akụrụngwa pụrụ iche, na-eji naanị transceivers programmable zuru ụwa ọnụ, ụdị mgbaàmà na modulation nke sọftụwia setịpụrụ (SDR, Software Defined Radio). Koodu oru ngo ọnọ ikike n'okpuru AGPLv3.

SrsLTE ike mmejuputa LTE UE ( Akụrụngwa onye ọrụ, ihe ndị ahịa maka ijikọ onye debanyere aha na netwọkụ LTE), ọdụ ọdụ LTE (eNodeB, E-UTRAN Node B), yana ihe nke netwọkụ LTE isi (MME - Mobility Management Entity for interaction). ya na ọdụ ọdụ, HSS - Home Subscriber Server maka ịchekwa nchekwa data ndị debanyere aha na ozi gbasara ọrụ metụtara ndị debanyere aha, SGW - Ọnụ ụzọ na-eje ozi maka nhazi na ngwugwu ụzọ maka ọdụ ọdụ, PGW - Packet Data Network Gateway maka ijikọ onye debanyere aha na netwọkụ mpụga.

Na ụdị ọhụrụ:

  • Nkwado nka na ụzụ nweta redio mbụ maka ọkwa LTE MAC, RLC na PDCP NR (Redio ọhụrụ), emepụtara maka netwọk mkpanaka 5G;
  • Iji mejuputa ọkọlọtọ NB-IoT (Internet nke Ihe Narrowband), eji jikọọ ngwaọrụ ịntanetị kwụụrụ onwe ya na netwọk mkpanaka, agbakwunyela koodu mmekọrịta;
  • Nkwado agbakwunyere maka algọridim nke cryptographic EIA3 na EEA3, dabere na cipher iyi iyi ZUC;
  • srsENB (mmejuputa ọdụ ọdụ ntọala) na-akwado teknụzụ ugbu a CSFB (Circuit Switched FallBack), nke na-enye gị ohere ịlaghachi na 3G mgbe ị na-akpọ oku olu ma ọ bụrụ na netwọk LTE na-akwado naanị ọnọdụ ịnyefe data;
  • Agbakwụnyela oyi akwa iji mee ule TTCN-3 iji nyochaa nnabata na ụkpụrụ nke akụrụngwa eji jikọọ onye debanyere aha na netwọk LTE;
  • Ụdị ọhụrụ maka ịmegharị nkwukọrịta n'ime ụgbọ oloko dị elu ka agbakwunyere na simulator ọwa;
  • A tọhapụrụ ọkwa RRC na NAS site na igbochi ụdị ọrụ.

Njirimara igodo:

  • Usoro ahụ nwere ike ịrụ ọrụ na transceivers ọ bụla nwere ike ime nke Ettus UHD (Onye ọkwọ ụgbọ ala zuru ụwa ọnụ) na ndị ọkwọ ụgbọ ala bladeRF ma nwee ike ịrụ ọrụ na bandwidth 30.72 MHz. srsLTE ejirila bọọdụ USRP B210, USRP B205mini, USRP X300, limeSDR na bladeRF nwalee ọrụ;
  • Ihe ngbanwe kachasị ọsọ ọsọ na-eji Intel SSE4.1/AVX2 ntuziaka iji nweta arụmọrụ karịrị 100 Mbps na ngwa ngwa ngwa ahịa. Ụkpụrụ mmejuputa iwu nke decoder na asụsụ C, na-enye arụmọrụ na ọkwa 25 Mbit / s;
  • Ndakọrịta zuru oke na ụdị 8 nke ọkọlọtọ LTE yana nkwado akụkụ maka ụfọdụ atụmatụ sitere na ụdị 9;
  • Nnweta nhazi maka ịrụ ọrụ na nkewa nkewa ugboro (FDD);
  • Ogologo bandwidth nwalere: 1.4, 3, 5, 10, 15 na 20 MHz;
  • Na-akwado ụdị nnyefe 1 (otu antenna otu), 2 (na-ebufe ụdị dị iche iche), 3 (CCD) na 4 (mechie-loop spatial multiplexing);
  • Equalizer nwere nkwado maka koodu ntinye ugboro ugboro ZF na MMSE;
  • Nkwado maka ịmepụta ọrụ maka ịnyefe ọdịnaya mgbasa ozi na mgbasa ozi na ụdị multicast;
  • Ikike idebe ndekọ zuru ezu na-ezo aka na ọkwa na nkwụsị nke nkwụsị;
  • Sistemụ njide ọkwa ọkwa MAC, dakọtara na nyocha netwọkụ Wireshark;
  • Nnweta metrik nwere data trace na ọnọdụ ahịrị iwu;
  • Faịlụ nhazi zuru ezu;
  • Mmejuputa LTE MAC, RLC, PDCP, RRC, NAS, S1AP na GW n'ígwé.

    • isi: opennet.ru

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