LibreCellular: aikin kyauta ne na kayan aiki da software don ƙirƙirar hanyar sadarwar ku ta hannu

Freerecellular

Akwai kaya da yawa dangane da SBC Rasberi Pi, ko a hukumar ci gaba Arduino. Daga wasu wadanda aka kaddara don kirkirar kanku retro consoles, har ma da wasu na kwamfyutocin cinya, kayan aiki hackable, da dai sauransu Game da LibreCellular aikin suna so su ci gaba da shiga zamanin na'urorin wayoyin hannu da hanyoyin sadarwar mara waya mai sauri da sauri ta amfani da kayan aikin kyauta da software.

LibreCellular yana nufin sauƙaƙe hanyoyin sadarwar wayoyin hannu bisa 4G LTE fasaha, ta amfani da software na budewa da kayan aiki. Saboda wannan suna dogara ne akan SDR (Rafaffen Rediyon Software), tsarin sadarwar rediyo inda aka maye gurbin abubuwa daban-daban waɗanda yawanci ana aiwatar dasu ta hanyar software.

Burin LibreCellular

LibreCellular yana da wata manufa, ba wai kawai aiwatar da shi ba cibiyar sadarwar wayarku yana aiki, amma kuma zaka iya ƙirƙirar shi da ƙarancin farashi. A gefe guda kuma, sun sanya wannan tsarin a cikin gwaji masu tsauri don tabbatar da cewa yana aiki yadda ya kamata, kuma sun samar masa da kayan aiki da takardu don masu ci gaban da za su buƙaci.

Duk abubuwanda wannan aikin zai kunsa zasu kasance ƙarƙashin lasisin buɗe tushen tushe, kuma ana sa ran wasu modan modulu su zo don ci gaba da kammala wannan aikin. Wani abu da ke mai da hankali ga dukkan ƙoƙari akan haɗuwa, gwaji, marufi da takaddara don mai da shi aikin sake amfani dashi da ƙirƙirar mafita daban-daban cikin sassauƙa

Aikin farko na LibreCellular shine zai ƙaddamar da ci gaba da hadewa (CI) dandamali. Wato, ƙirƙirar dandamali don ci gaba ta inda masu haɓaka zasu iya haɗa canje-canjen lambar tushe zuwa cikin babban ma'aji da / ko bita da kayan aiki.

Hakanan za a yi ƙoƙari don kammala tashar tushe ta SDR don mitar rediyo da sadarwa na waɗannan cibiyoyin sadarwar, tare da ƙirƙirar kayan gwajin da ake buƙata, cibiyar sadarwar RF, da bankunan LTE modem don haɗi. Da zarar dukkanin kayan aiki suna aiki, mayar da hankali zai koma zuwa sama: haɗakar tarin wayar hannu, marufi, da kuma bayanai.

Ayyukan aikin

Aikin LibreCellular ya kunshi kayan aiki da sassan software, kamar yadda na ambata a baya. Duk abin da kuke buƙatar bayarwa a asali LTE data sabis da tallafi kuma don kiran murya. Don wannan ya yiwu, sassa masu zuwa suna buƙatar haɗawa:

  • Tsarin kayan aikin CI: don tashar tushe tare da bankunan modem na LTE akan hanyar sadarwar RF mai waya, tare da auna RF, sarrafawa da rarraba agogo.
  • Kanfigareshan da gwaji: za a yi ta amfani da software OsmoGSMGwajin, kuma za a faɗaɗa ɗaukar hoto yayin da ci gaba ke ci gaba. A takaice dai, zai tafi ne daga sabis na asali inda wasu na'urorin hannu masu rajista za a iya haɗa su zuwa cikakken sabis tare da damar kiran murya na VoLTE albarkacin tsarin multimedia na IP (IMS).
  • Tsarin software: duk wannan kayan aikin zasu kasance tare da software wanda ke bada damar aiwatar da sadarwa.
    • ENodeB zai yi amfani dashi 4G tashar tushe wanda za'a aiwatar dashi tare da taimakon sRRAN.
    • EPC ainihin ta amfani Buɗe5G don cibiyar sadarwar.
    • Tsarin multimedia na IP ta amfani Kamailio don IMS.
  • Tunani kan kayan aiki- Wannan zai zama babban maƙasudi, saboda zai adana lokaci mai tsawo don haɓaka sabbin masu amfani da aiki kuma zai sauƙaƙa matsalolin matsalolin kayan aiki.
    • Aikin baseband: ana amfani da SBC Intel NUC7i7DNBE don gudanar da bandband da yadudduka na sama na tarin motsi.
    • Kayan aikin SDR: wanda aka zaɓi farantin LimeSDR-USB.
    • RF ke dubawa: don mitar rediyo za'a yi amfani da aikin LimeRFE wanda zai samar da cikakkiyar Multiband RF gaban-ent tare da LNA, PA da duplexers. Kari akan hakan, yana samarda kayan aikin zamani a 24 dBm a cikin makunnan masu motsi 1, 2, 3, 4 da 5.
    • Duba tunani: don agogon tunani wanda LimeSDR zai yi amfani da shi, a GPS Leo Bodnar Mini Daidaici don inganta kwanciyar hankali da daidaito na sigina.

Informationarin bayani - Yanar gizo


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