{"id":41277,"date":"2020-02-07T09:28:08","date_gmt":"2020-02-07T06:28:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/proekt-openwifi-s-realizacziej-otkrytogo-wi-fi-chipa-na-baze-fpga-i-sdr"},"modified":"2020-02-07T09:28:08","modified_gmt":"2020-02-07T06:28:08","slug":"proekt-openwifi-s-realizacziej-otkrytogo-wi-fi-chipa-na-baze-fpga-i-sdr","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/proekt-openwifi-s-realizacziej-otkrytogo-wi-fi-chipa-na-baze-fpga-i-sdr","title":{"rendered":"Az OpenWifi projekt c\u00e9lja egy ny\u00edlt Wi-Fi chip megval\u00f3s\u00edt\u00e1sa FPGA \u00e9s SDR alapokon.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A 2020-as FOSDEM konferenci\u00e1n <noindex><a rel=\"nofollow\" href=\"https:\/\/fosdem.org\/2020\/schedule\/event\/fsr_openwifi\/\">bemutatva<\/a><\/noindex> projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi\">OpenWifi<\/a><\/noindex>, amely fejleszti az els\u0151 ny\u00edlt teljes Wi-Fi 802.11a\/g\/n stack megval\u00f3s\u00edt\u00e1st, ahol a jelform\u00e1tum \u00e9s a modul\u00e1ci\u00f3 szoftveresen (SDR, Software Defined Radio) van meghat\u00e1rozva. Az OpenWifi lehet\u0151v\u00e9 teszi egy teljes m\u00e9rt\u00e9kben ellen\u0151rizhet\u0151 megval\u00f3s\u00edt\u00e1s l\u00e9trehoz\u00e1s\u00e1t az \u00f6sszes vezet\u00e9k n\u00e9lk\u00fcli eszk\u00f6z komponens\u00e9r\u0151l, bele\u00e9rtve az alacsony szint\u0171 r\u00e9tegeket, amelyeket a szok\u00e1sos vezet\u00e9k n\u00e9lk\u00fcli adapterekben audit\u00e1lhatatlan chipek szintj\u00e9n val\u00f3s\u00edtanak meg. A k\u00f3d <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi\">programk\u00f6zpont\u00fa komponensek<\/a><\/noindex>, valamint <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi-hw\">s\u00e9m\u00e1k \u00e9s le\u00edr\u00e1sok<\/a><\/noindex>  hardverblokkok Verilog nyelven FPGA-hoz, AGPLv3 licenc alatt terjesztik.<\/p>\n<p>A bemutatott m\u0171k\u00f6d\u0151 protot\u00edpus hardveres \u00f6sszetev\u0151i Xilinx Zynq FPGA-n \u00e9s az Analog Devices AD9361 univerz\u00e1lis vev\u0151-ad\u00f3n alapulnak. Az OpenWifi SoftMAC architekt\u00far\u00e1t haszn\u00e1l, amely a f\u0151 vezet\u00e9k n\u00e9lk\u00fcli 802.11 stack (high-MAC) megval\u00f3s\u00edt\u00e1s\u00e1t a meghajt\u00f3 oldal\u00e1n, valamint low-MAC r\u00e9teget az FPGA oldalon vonja be. A vezet\u00e9k n\u00e9lk\u00fcli stack a Linux kernel \u00e1ltal biztos\u00edtott mac80211 alrendszert haszn\u00e1lja. Az SDR-rel val\u00f3 interakci\u00f3 egy speci\u00e1lis meghajt\u00f3n kereszt\u00fcl val\u00f3sul meg.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/raw.githubusercontent.com\/open-sdr\/openwifi\/master\/openwifi-arch.jpg\"><img decoding=\"async\" alt=\"Az OpenWifi projekt c\u00e9lja egy ny\u00edlt Wi-Fi chip megval\u00f3s\u00edt\u00e1sa FPGA \u00e9s SDR alapokon.\" src=\"\/wp-content\/uploads\/2020\/02\/e3604cad3b6d4e0d0c2491fa1e6969fe.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>F\u0151bb funkci\u00f3k:<\/p>\n<ul>\n<li class=\"l\"> Teljes k\u00f6r\u0171 802.11a\/g t\u00e1mogat\u00e1s \u00e9s r\u00e9szleges 802.11n MCS 0~7 t\u00e1mogat\u00e1s (jelenleg csak PHY rx). A j\u00f6v\u0151beli terveink k\u00f6z\u00f6tt szerepel az 802.11ax t\u00e1mogat\u00e1s;\n<li class=\"l\"> 20MHz s\u00e1vsz\u00e9less\u00e9g \u00e9s 70 MHz-t\u0151l 6 GHz-ig terjed\u0151 frekvenciatartom\u00e1ny;\n<li class=\"l\"> M\u0171k\u00f6d\u00e9si m\u00f3dok: <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> (klienst eszk\u00f6z\u00f6k h\u00e1l\u00f3zata), hozz\u00e1f\u00e9r\u00e9si pont, \u00e1llom\u00e1s \u00e9s monitoroz\u00e1s;\n<li class=\"l\"> A csatorna szint\u0171 protokoll FPGA oldal\u00e1n t\u00f6rt\u00e9n\u0151 megval\u00f3s\u00edt\u00e1sa <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Distributed_coordination_function\">DCF<\/a><\/noindex> (Distributed Coordination Function), amely a CSMA\/CA m\u00f3dszert haszn\u00e1lja. A keretek feldolgoz\u00e1si idej\u00e9t (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Short_Interframe_Space\">SIFS<\/a><\/noindex>) 10us szinten biztos\u00edtja;\n<li class=\"l\"> \u00c1ll\u00edthat\u00f3 hozz\u00e1f\u00e9r\u00e9si priorit\u00e1si param\u00e9terek: RTS\/CTS id\u0151tartama, CTS-to-self, SIFS, DIFS, xIFS, slot-time stb.\n<li class=\"l\">  Id\u0151 kvant\u00e1l\u00e1s (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Time_slicing_(digital_broadcasting)\">Time slicing<\/a><\/noindex>) MAC-c\u00edm alapj\u00e1n;\n<li class=\"l\"> K\u00f6nnyen m\u00f3dos\u00edthat\u00f3 s\u00e1vsz\u00e9less\u00e9g \u00e9s frekvencia:<br \/>\n        2MHz az 802.11ah-hoz \u00e9s 10MHz az 802.11p-hez;<\/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=\"Az OpenWifi projekt c\u00e9lja egy ny\u00edlt Wi-Fi chip megval\u00f3s\u00edt\u00e1sa FPGA \u00e9s SDR alapokon.\" src=\"\/wp-content\/uploads\/2020\/02\/32260d0341871b1d4b7ba65c5a42ab6c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Jelenleg az OpenWifi biztos\u00edtja <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/open-sdr\/openwifi-hw\">Passkey<\/a><\/noindex> SDR platformok FPGA-n<br \/>\nXilinx ZC706 az Analog Devices FMCOMMS2\/3\/4 vev\u0151-ad\u00f3kkal, valamint (FPGA + RF) ADRV9361Z7035 SOM + ADRV1CRR-BOB \u00e9s ADRV9361Z7035 SOM + ADRV1CRR-FMC. A bet\u00f6lt\u00e9shez egy <noindex><a rel=\"nofollow\" href=\"https:\/\/users.ugent.be\/~xjiao\/\">elk\u00e9sz\u00edtett k\u00e9p<\/a><\/noindex> ARM Linux alap\u00fa SD-k\u00e1rty\u00e1hoz. A terveink k\u00f6z\u00f6tt szerepel az ADRV9364Z7020 SOM + ADRV1CRR-BOB, Xilinx zed + FMCOMMS2\/3\/4, Xilinx ZCU102 + FMCOMMS2\/3\/4 \u00e9s<br \/>\nXilinx ZCU102 + ADRV9371. Az OpenWifi els\u0151 protot\u00edpus\u00e1nak megval\u00f3s\u00edt\u00e1s\u00e1ra ford\u00edtott alkatr\u00e9szek k\u00f6lts\u00e9ge k\u00f6r\u00fclbel\u00fcl 1300 eur\u00f3ra r\u00fagott, de a c\u00e9l egy olcs\u00f3bb alaplapra val\u00f3 portol\u00e1s. P\u00e9ld\u00e1ul egy <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.analog.com\/resources\/eval\/user-guides\/adrv9364-z7020\">Analog Devices ADRV9364-Z7020 alap\u00fa megold\u00e1s k\u00f6lts\u00e9ge.<\/a><\/noindex> 700 eur\u00f3t fog kitenni, \u00e9s <noindex><a rel=\"nofollow\" href=\"https:\/\/aliexpress.ru\/item\/4000498157487.html\">ZYNQ NH7020<\/a><\/noindex> \u2014 400 eur\u00f3.<\/p>\n<p>A TL-WDN4200 N900 USB adapterrel rendelkez\u0151 kliens csatlakoz\u00e1s teljes\u00edtm\u00e9nytesztel\u00e9se az OpenWifi alap\u00fa hozz\u00e1f\u00e9r\u00e9si pontra 30,6 Mbps (TCP) \u00e9s 38,8 Mbps (UDP) adat\u00e1tviteli sebess\u00e9get eredm\u00e9nyezett a hozz\u00e1f\u00e9r\u00e9si pontt\u00f3l a kliens fel\u00e9, \u00e9s 17,0 Mbps (TCP) \u00e9s 21,5 Mbps (UDP) sebess\u00e9get a klienst\u0151l a hozz\u00e1f\u00e9r\u00e9si pontra. A Linux be\u00e9p\u00edtett seg\u00e9dprogramjai, mint az ifconfig \u00e9s iwconfig, valamint a sdrctl nev\u0171 speci\u00e1lis eszk\u00f6z, amely netlinken kereszt\u00fcl m\u0171k\u00f6dik, szint\u00e9n haszn\u00e1lhat\u00f3k az SDR alacsony szint\u0171 m\u0171k\u00f6d\u00e9s\u00e9nek ir\u00e1ny\u00edt\u00e1s\u00e1ra (regiszterek manipul\u00e1l\u00e1sa, id\u0151 kvant\u00e1l\u00e1si be\u00e1ll\u00edt\u00e1sok m\u00f3dos\u00edt\u00e1sa stb.).<\/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=\"Vide\u00f3 lej\u00e1tsz\u00e1sa\" 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>M\u00e1s ny\u00edlt projekteket is megeml\u00edthet\u00fcnk, amelyek a Wi-Fi veremmelt k\u00eds\u00e9rleteznek, p\u00e9ld\u00e1ul a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.wime-project.net\/\">Wime<\/a><\/noindex>, amely az IEEE 802.11 a\/g\/p <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/bastibl\/gr-ieee802-11\">ad\u00f3egys\u00e9g<\/a><\/noindex> GNU Radio alap\u00fa \u00e9s hagyom\u00e1nyos PC-ken. A ny\u00edlt szoftveres 802.11 vezet\u00e9k n\u00e9lk\u00fcli veremmelt is fejlesztenek <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/dimitriv\/Ziria\">Ziria<\/a><\/noindex> \u00e9s <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/microsoft\/Sora\">Sora<\/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=\"Az OpenWifi projekt c\u00e9lja egy ny\u00edlt Wi-Fi chip megval\u00f3s\u00edt\u00e1sa FPGA \u00e9s SDR alapokon.\" src=\"\/wp-content\/uploads\/2020\/02\/2c53b93159920132a1cdce064871024c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <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":41278,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-41277","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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 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