Shirkii ugu dambeeyay ee FOSDEM 2020
Qaybta hardware ee tusaalaha shaqada ee la soo bandhigay waxay ku salaysan tahay Xilinx Zynq FPGA iyo AD9361 transceiver caalamiga ah (RF). OpenWifi waxay isticmaashaa qaab dhismeedka SoftMAC, taas oo tusinaysa hirgalinta 802.11 xidhmo-wayne wireless (sare-MAC) dhinaca darawalka iyo joogitaanka lakabka MAC-hoose ee dhinaca FPGA. Xirmada bilaa-waayirka ah waxay isticmaashaa nidaamka hoosaadka mac80211 ee ay bixiso Linux kernel. Isdhexgalka SDR waxaa lagu fuliyaa darawal gaar ah.
Tilmaamaha muhiimka ah:
- Taageerada buuxda ee 802.11a/g iyo taageero qayb ah 802.11n MCS 0~7 (PHY rx kaliya hadda). Waxaa jira qorshayaal lagu taageerayo 802.11ax;
- Bandwidth 20MHz iyo inta jeer ee kala duwan laga bilaabo 70 MHz ilaa 6 GHz;
- Hababka hawlgalka:
Ad hoc (shabakadda aaladaha macmiilka), barta gelitaanka, saldhigga iyo la socodka; - Hirgelinta borotokoolka lakabka isku xirka ee dhinaca FPGA
DCF (Shaqada Isku-dubbarid Qaybsan), iyadoo la adeegsanayo habka CSMA/CA. Waxay bixisaa wakhtiga habayntaSIFS ) heerka 10us; - Halbeegyada mudnaanta leh ee marinka kanaalka la hagaajin karo: Muddada RTS/CTS, CTS-ka-laftirka, SIFS, DIFS, xIFS, wakhtiga booska, iwm.
- Waqti goyn (
Waqti goyn ) ku salaysan cinwaanka MAC; - Xaddiga iyo inta jeer ee si fudud loo beddeli karo:
2MHz ee 802.11ah iyo 10MHz ee 802.11p;
Hadda, OpenWifi ayaa bixisa
Xilinx ZC706 leh Analog Devices FMCOMMS2/3/4 transceivers, iyo sidoo kale xidhmooyinka (FPGA + RF) ADRV9361Z7035 SOM + ADRV1CRR-BOB iyo ADRV9361Z7035 SOM + ADRV1CRR-FMC. Loo sameeyay rarista
Xilinx ZCU102 + ADRV9371.
Π’Π΅ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΠ΄ΠΊΠ»ΡΡΠ΅Π½ΠΈΡ ΠΊΠ»ΠΈΠ΅Π½ΡΠ° Ρ USB-Π°Π΄Π°ΠΏΡΠ΅ΡΠΎΠΌ TL-WDN4200 N900 ΠΊ ΡΠΎΡΠΊΠ΅ Π΄ΠΎΡΡΡΠΏΠ° Π½Π° Π±Π°Π·Π΅ openwifi ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ Π΄ΠΎΠ±ΠΈΡΡΡΡ ΠΏΡΠΎΠΏΡΡΠΊΠ½ΠΎΠΉ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ 30.6Mbps (TCP) ΠΈ 38.8Mbps (UDP) ΠΏΡΠΈ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΠ΅ Π΄Π°Π½Π½ΡΡ ΠΎΡ ΡΠΎΡΠΊΠΈ Π΄ΠΎΡΡΡΠΏΠ° ΠΊ ΠΊΠ»ΠΈΠ΅Π½ΡΡ ΠΈ 17.0Mbps (TCP) ΠΈ 21.5Mbps (UDP) ΠΏΡΠΈ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΠ΅ ΠΎΡ ΠΊΠ»ΠΈΠ΅Π½ΡΠ° ΠΊ ΡΠΎΡΠΊΠ΅ Π΄ΠΎΡΡΡΠΏΠ°. ΠΠ»Ρ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΌΠΎΠ³ΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡΡΡ ΡΡΠ°ΡΠ½ΡΠ΅ ΡΡΠΈΠ»ΠΈΡΡ Linux, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ ifconfig ΠΈ iwconfig, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½Π°Ρ ΡΡΠΈΠ»ΠΈΡΠ° sdrctl, ΡΠ°Π±ΠΎΡΠ°ΡΡΠ°Ρ ΡΠ΅ΡΠ΅Π· netlink ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠ°Ρ ΡΠΏΡΠ°Π²Π»ΡΡΡ ΡΠ°Π±ΠΎΡΠΎΠΉ SDR Π½Π° Π½ΠΈΠ·ΠΊΠΎΠΌ ΡΡΠΎΠ²Π½Π΅ (ΠΌΠ°Π½ΠΈΠΏΡΠ»ΠΈΡΠΎΠ²Π°ΡΡ ΡΠ΅Π³ΠΈΡΡΡΠ°ΠΌΠΈ, ΠΌΠ΅Π½ΡΡΡ Π½Π°ΡΡΠΎΠΉΠΊΠΈ ΠΊΠ²Π°Π½ΡΠΎΠ²Π°Π½ΠΈΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΈ Ρ.ΠΏ.).
ΠΠ· Π΄ΡΡΠ³ΠΈΡ
ΠΎΡΠΊΡΡΡΡΡ
ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ², ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠΈΡΡΡΡΠΈΡ
Ρ Wi-Fi ΡΡΠ΅ΠΊΠΎΠΌ ΠΌΠΎΠΆΠ½ΠΎ ΠΎΡΠΌΠ΅ΡΠΈΡΡ ΠΏΡΠΎΠ΅ΠΊΡ
Source: opennet.ru