WiFi通讯技术在煤矿井下的应用

WiFi,(,400034):WiFi,,,WiFi,,WiFi,:;;WiFi:TD65+5.3:B:1003-496X(2008)02-0049-03,,,,,,WiFi1WiFiWiFi(WirelessFidlity)802.11b,2.4GHz,54bit/s,5.5bit/s2bit/s1bit/s,2.4GHz5GHz,,AP,,HubWiFi,WiFi,,,,2WiFi,(30m),,;,,,;WiFi,(500m),,,+,,3,,412,A6A5,A3(),,A6A53A5A61412(3),,,20071412(3),,,,,:(1982-),,,(:2007-02-31;:)94(2008-02)3WiFi(1)(2)(3)(4)(5)(6)4WiFiTCP/IP,,,,IP,,,,,,1155.1,IPIPIP,,,IP225.2,WiFiIEEE802.3IEEE802.3u,CS2MA/CACSMA/CDTCP/IPDHCPICMPNATWiFi(WLAN)(MAC)IEEE802.11g,2.4GHz,54bit/sMAC,/(CSMA/CA)(MAC)IEEE802.3,,802.3802.3MAC,CSMA/CD,IEEE802.3u100bit/s5.3,GSMCDMA,,,,,,5.43,MOSFET(V1V2)IC(N1)05(Total399)IC,MOSFET,MOSFET,,C3,36J2EE(JDK5.0),Java,SIP,UDP,RTP,RTCP,TCP/IPSQL5.0,WINDOWS2000/2003,7(1),,(2),,54M(3)TCP/IP,(4)WiFi,WiFi,(5),(6),(7)(8)(9):(10):(11):,,,(12)::(13):,,(14):,(15)::,:1.J.,1999(4).2,.WIFIJ.,2005(3).:(1979-),,,(:2007-08-31;:)15(2008-02)