Athena Bài Giảng Mạng WLan

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    28-Nov-2014
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Transcript of Athena Bài Giảng Mạng WLan

  • 1. ATHENAWWW.ATHENA.EDU.VN
  • 2. M ng khng dy Wireless LANATHENA
  • 3. Gi i Thi u M ng WLANATHENA
  • 4. N i DungKhi ni m WLANCc chu n trong WLANCc k thu t truy n tn hi u trong WLAN DSSS Direct Sequence Spread SpectrumATHENA DSSS Direct Sequence Spread Spectrum WLAN Media Access Control- CSMA/CA (Carrier sense mutiple/collisionavoidance)- RTS/CTS (Request to send/Clear to send)Cc thi t b s d ng trong m ng WLANM t s m hnh m ng WLAN
  • 5. Khi Ni m WLANL m t h th ng cc thi t b c nhm l i v inhau, c kh nng giao ti p thng qua sngradio thay v cc ng truy n d n b ng dyATHENA
  • 6. Cc Chu n C a WLANT ch c IEEE (Institute of Electrical andElectronics Engineers) d a trn cng nghm ng c c b pht tri n chu n u tincho m ng c c b khng dy IEEE 802.11Chu n WLAN:ATHENA IEEE 802.11b IEEE 802.11a IEEE 802.11g IEEE 802.11i (WEP2) IEEE 802.11n (MIMO)
  • 7. Cc Chu n C a WLANIEEE 802.11b Speed: 1Mbps 11Mbps Frequency Band : 2,4 Ghz ISMBand(Insdustrial, Scientific, MedicalBand)ATHENABand)
  • 8. Cc Chu n C a WLANIEEE 802.11b Plus (IEEE 802.11b+) Speed: 1Mbps 22Mbps Frequency Band : 2,4 Ghz ISMBand(Insdustrial, Scientific, MedicalBand)ATHENABand) Improved from IEEE 802.11 b
  • 9. Cc Chu n C a WLANIEEE 802.11a Speed: 1Mbps 54Mbps Frequency Band : 5GHz or More Not compatible with 802.11b and802.11b PlusATHENA802.11b Plus
  • 10. Cc Chu n C a WLANIEEE 802.11g Speed: 1Mbps 54Mbps Frequency Band : 2,4 Ghz ISMBand(Insdustrial, Scientific, MedicalBand)ATHENABand) Compatible with 802.11b, 802.11b+
  • 11. Cc Chu n C a WLANIEEE 802.11n Speed: 54Mbps 300Mbps Frequency Band : 2,4 Ghz ISMBand(Insdustrial Scientific MedicalBand)ATHENABand) Compatible with 802.11b,b+ and802.11g MiMo (Multi-Input_Multi-Output)
  • 12. K Thu t Truy n Tn Hi u Trong WLANDSSS- Direct Sequence Spread Spectrum(K thu t tr i ph tu n t tr c ti p)DSSS l k thu t cho php tn hi u truy ni c tr i trn nhi u t n s ho t ng ng th i nh m gi m nhi u, m t mt dATHENA ng th i nh m gi m nhi u, m t mt dli uTn hi u c tr i trn 7 ho c 11 t nBng t n ho t ng c a DSSS l 900Mhz(902-928Mhz) v 2.4Ghz (2.4-2.483Ghz)
  • 13. K Thu t Truy n Tn Hi u Trong WLANWLAN Media Access Control: CSMA/CA - Carrier sense mutiple/collisionavoidance(K thu t c m sng a truy c p trnh ng )ATHENA
  • 14. K Thu t Truy n Tn Hi u Trong WLANWLAN Media Access Control: RTS/CTS - Request to send/Clear to sendATHENA
  • 15. Cc Thi t B Trong WLANWireless Access PointATHENA
  • 16. Cc Thi t B Trong WLANWireless LAN PCI CardATHENA
  • 17. Cc Thi t B Trong WLANWireless LAN PCMCIA Card/Card BusATHENA
  • 18. Cc Thi t B Trong WLANWireless LAN PCMCIA Card/PCIATHENA
  • 19. Cc Thi t B Trong WLANWireless USB CardATHENA
  • 20. Cc Thi t B Trong WLANWireless Printer ServerATHENA
  • 21. Cc Thi t B Trong WLANWireless Printer ServerATHENA
  • 22. Cc Thi t B Trong WLANWireless Printer ServerATHENA
  • 23. Cc Thi t B Trong WLANAnten: Chia thnh 2 lo i Anten nh h ng: Anten a h ng:ATHENA
  • 24. Cc M Hnh WLANM hnh Ad-HocM hnh Infrastructure 1M hnh Infrastructure 2M hnh RoamingATHENAM hnh RoamingCc m hnh khc: Khuy ch i tn hi u,HotSpot, Outdoor
  • 25. Cc M Hnh WLANM hnh Ad-HocATHENA
  • 26. Cc M Hnh WLANM hnh Infrastructure 1ATHENA
  • 27. Cc M Hnh WLANM hnh Infrastructure 2ATHENA
  • 28. Cc M Hnh WLANM hnh RoamingATHENA
  • 29. Cc M Hnh WLANKhuy ch i tn hi u (Repeater AccessPoint)ATHENA
  • 30. Cc M Hnh WLANM hnh HotSpot- IndoorATHENA
  • 31. Cc M Hnh WLANM hnh HotSpot- OutdoorATHENA
  • 32. Cc M Hnh WLANM hnh Point to PointATHENA
  • 33. Cc M Hnh WLANM hnh Point to MultiPointATHENA
  • 34. WiMaxATHENA
  • 35. WiMaxM hnhATHENA
  • 36. Th c HnhC u hnh Wireless Access-Point C u hnh WAN port C u hnh LAN portATHENA
  • 37. ATHENA