{"id":56088,"date":"2020-02-04T00:00:00","date_gmt":"2020-02-03T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/proekt-openwifi-razvivaet-otkrytyj-wi-fi-chip-na-baze-fpga-i-sdr"},"modified":"2020-02-18T14:04:17","modified_gmt":"2020-02-18T11:04:17","slug":"proekt-openwifi-razvivaet-otkrytyj-wi-fi-chip-na-baze-fpga-i-sdr","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/proekt-openwifi-razvivaet-otkrytyj-wi-fi-chip-na-baze-fpga-i-sdr","title":{"rendered":"Das Projekt OpenWifi entwickelt einen offenen Wi-Fi-Chip auf der Basis von FPGA und SDR","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Auf der vergangenen FOSDEM 2020-Konferenz <noindex><a rel=\"nofollow\" href=\"https:\/\/fosdem.org\/2020\/schedule\/event\/fsr_openwifi\/\">wurde vorgestellt<\/a><\/noindex> Projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi\">OpenWifi<\/a><\/noindex>, das die erste Open-Source-Implementierung des vollst\u00e4ndigen Wi-Fi 802.11a\/g\/n-Stacks entwickelt, wobei die Signalform und Modulation softwareseitig (SDR, Software Defined Radio) definiert wird. OpenWifi erm\u00f6glicht die Erstellung einer vollst\u00e4ndig kontrollierbaren Implementierung aller Komponenten eines drahtlosen Ger\u00e4ts, einschlie\u00dflich der niedrigen Ebenen, die in herk\u00f6mmlichen drahtlosen Adaptern auf Chips realisiert werden, die nicht auditiert werden k\u00f6nnen. Der Code <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi\">der Softwarekomponenten<\/a><\/noindex>, sowie <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi-hw\">Schaltungen<\/a><\/noindex> (Verilog) der Hardwareeinheiten auf Basis von FPGA wird unter der Lizenz AGPLv3 verbreitet.<\/p>\n<p>Die Hardware des demonstrierten funktionierenden Prototyps basiert auf dem FPGA Xilinx Zynq und dem universellen Sender\/Empf\u00e4nger (RF) AD9361. In OpenWifi wird die SoftMAC-Architektur verwendet, die die Implementierung des Haupt-Drahtlosstapels 802.11 (high-MAC) auf der Treiberseite und eine low-MAC-Schicht auf der FPGA-Seite umfasst. Als drahtloser Stapel wird das mac80211-Subsystem des Linux-Kernels verwendet. Die Interaktion mit dem SDR erfolgt \u00fcber einen speziellen Treiber.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/raw.githubusercontent.com\/open-sdr\/openwifi\/master\/openwifi-arch.jpg\"><img decoding=\"async\" alt=\"Das Projekt OpenWifi entwickelt einen offenen Wi-Fi-Chip auf der Basis von FPGA und SDR\" src=\"\/wp-content\/uploads\/2020\/02\/fadc2762899cba1349ec245ced7e8ba0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Hauptfunktionen:<\/p>\n<ul>\n<li class=\"l\"> Vollst\u00e4ndige Unterst\u00fctzung f\u00fcr 802.11a\/g und teilweise Unterst\u00fctzung f\u00fcr 802.11n MCS 0~7 (derzeit nur PHY rx). Geplant ist die Unterst\u00fctzung von 802.11ax;\n<li class=\"l\"> Bandbreite von 20 MHz und Frequenzbereich von 70 MHz bis 6 GHz;\n<li class=\"l\"> Betriebsmodi: <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%91%D0%B5%D1%81%D0%BF%D1%80%D0%BE%D0%B2%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F_ad-hoc-%D1%81%D0%B5%D1%82%D1%8C\">Ad-hoc<\/a><\/noindex> (Netzwerk aus Client-Ger\u00e4ten), Zugangspunkt, Station und Monitoring;\n<li class=\"l\"> Implementierung des Protokolls auf Kanalebene auf FPGA-Seite <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Distributed_coordination_function\">DCF<\/a><\/noindex> (Distributed Coordination Function), verwendet die CSMA\/CA-Methode. Die Frame-Verarbeitungszeit wird gew\u00e4hrleistet (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Short_Interframe_Space\">SIFS<\/a><\/noindex>) auf Ebene von 10 us;\n<li class=\"l\"> Konfigurierbare Zugriffspriorit\u00e4ten: Dauer von RTS\/CTS, CTS-to-self, SIFS, DIFS, xIFS, Slot-Zeit usw.;\n<li class=\"l\">  Zeitquantisierung (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Time_slicing_(digital_broadcasting)\">Time Slicing<\/a><\/noindex>) basierend auf MAC-Adresse;\n<li class=\"l\"> Leicht anpassbare Bandbreite und Frequenz:<br \/>\n        2 MHz f\u00fcr 802.11ah und 10 MHz f\u00fcr 802.11p;<\/p>\n<\/ul>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/pics_base\/0_1580822257.png\"><img decoding=\"async\" alt=\"Das Projekt OpenWifi entwickelt einen offenen Wi-Fi-Chip auf der Basis von FPGA und SDR\" src=\"\/wp-content\/uploads\/2020\/02\/cda1122ebd4c40ca22bb54e4211687d1.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Derzeit bieten OpenWifi <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi-hw\">Unterst\u00fctzung f\u00fcr<\/a><\/noindex> SDR-Plattformen basierend auf FPGA<br \/>\nXilinx ZC706 mit Analog Devices FMCOMMS2\/3\/4-Transceivern sowie den Kombinationen (FPGA + RF) ADRV9361Z7035 SOM + ADRV1CRR-BOB und ADRV9361Z7035 SOM + ADRV1CRR-FMC an. F\u00fcr das Hochladen wurde ein <noindex><a rel=\"nofollow\" href=\"https:\/\/users.ugent.be\/~xjiao\/\">fertiges Image<\/a><\/noindex> f\u00fcr SD-Karten auf ARM Linux-Basis erstellt. Zuk\u00fcnftige Pl\u00e4ne umfassen die Unterst\u00fctzung der Kombinationen ADRV9364Z7020 SOM + ADRV1CRR-BOB, Xilinx zed + FMCOMMS2\/3\/4, Xilinx ZCU102 + FMCOMMS2\/3\/4 und<br \/>\nXilinx ZCU102 + ADRV9371.<\/p>\n<p>Die Leistungsbewertung der Verbindung des Kunden mit dem USB-Adapter TL-WDN4200 N900 zu einem OpenWiFi-Zugangspunkt ergab eine Durchsatzrate von 30,6 Mbps (TCP) und 38,8 Mbps (UDP) f\u00fcr Daten\u00fcbertragungen vom Zugangspunkt zum Client sowie 17,0 Mbps (TCP) und 21,5 Mbps (UDP) f\u00fcr \u00dcbertragungen vom Client zum Zugangspunkt. Zur Verwaltung k\u00f6nnen die integrierten Linux-Dienstprogramme wie ifconfig und iwconfig sowie das spezialisierte Tool sdrctl, das \u00fcber Netlink arbeitet, verwendet werden, um SDR-Funktionalit\u00e4ten auf niedriger Ebene zu steuern (Registermanipulation, \u00c4nderungen der Zeitquantisierungseinstellungen usw.).<\/p>\n<p><center><video  controls=\"\" style=\"width: 640px; height: 400px; max-width:100%\"><source src=\"https:\/\/video.fosdem.org\/2020\/AW1.120\/fsr_openwifi.mp4\" type=\"video\/mp4\"><\/video><\/center><\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"NpjEaszd5u4\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/NpjEaszd5u4\/hqdefault.jpg\" alt=\"Video abspielen\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><\/p>\n<p>Unter anderen Open-Source-Projekten, die mit dem Wi-Fi-Stack experimentieren, hebt sich das Projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/www.wime-project.net\/\">Wime<\/a><\/noindex>, das einen mit IEEE 802.11 a\/g\/p kompatiblen <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/bastibl\/gr-ieee802-11\">Sender<\/a><\/noindex> auf Basis von GNU Radio und einem Standard-PC entwickelt. Auch die Software-Open-Source-Wireless-Stacks 802.11 f\u00f6rdern Projekte wie <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/dimitriv\/Ziria\">Ziria<\/a><\/noindex> und <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/microsoft\/Sora\">und<\/a><\/noindex> (Microsoft Research Software Radio).<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/pics_base\/0_1580821775.png\"><img decoding=\"async\" alt=\"Das Projekt OpenWifi entwickelt einen offenen Wi-Fi-Chip auf der Basis von FPGA und SDR\" src=\"\/wp-content\/uploads\/2020\/02\/df58241fae83d035326f09bd463c998c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52309\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 \u043f\u0440\u043e\u0448\u0435\u0434\u0448\u0435\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 FOSDEM 2020 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0435\u043a\u0442 OpenWifi, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0441\u0442\u0435\u043a\u0430 Wi-Fi 802.11a\/g\/n, \u0444\u043e\u0440\u043c\u0430 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0438 \u043c\u043e\u0434\u0443\u043b\u044f\u0446\u0438\u044f \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0437\u0430\u0434\u0430\u0451\u0442\u0441\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e (SDR, Software Defined Radio). OpenWifi \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043f\u043e\u0434\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0432\u0441\u0435\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0435 \u0441\u043b\u043e\u0438, \u0432 \u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u0430\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u043c\u044b\u0435 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u043d\u0435\u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0445 \u0434\u043b\u044f \u0430\u0443\u0434\u0438\u0442\u0430 \u0447\u0438\u043f\u043e\u0432. \u041a\u043e\u0434 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432, [&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-56088","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0430 \u043f\u0440\u043e\u0448\u0435\u0434\u0448\u0435\u0439 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 FOSDEM 2020 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0435\u043a\u0442 OpenWifi, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0441\u0442\u0435\u043a\u0430 Wi-Fi 802.11a\/g\/n, \u0444\u043e\u0440\u043c\u0430 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0438 \u043c\u043e\u0434\u0443\u043b\u044f\u0446\u0438\u044f \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0437\u0430\u0434\u0430\u0451\u0442\u0441\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e (SDR, Software Defined Radio). 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