全國電信研討會

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  • 1. 利用合作式通訊提昇搜尋使用者的成功率 報告者:吳柏毅 國立中正大學 電機工程研究所
  • 2. Outline
    • 前言
    • 背景
    • User discovery 架構
    • 解決問題
    • Evaluation
    • 結論
  • 3. 前言
  • 4. 背景
    • UPnP (Universal Plug and Play)
    • IEEE 802.11
      • Infrastructure mode
      • Ad hoc mode
    • Bluetooth
      • NAP (Network Access Point)
  • 5. User discovery 架構
    • NIBS (Name to ID Binding Server )
    • User discovery protocol
  • 6. User Discovery Protocol
    • User Discovery Protocol 是工作於 UDP port 7500
    • TYPE 1 (0x11) 是代表此 message 是用來做 WiFi discovery
    • TYPE 2 (0x22) 則是找到目標時所發出的回應 message
    • TPYE 3 (0x33) 是用在 Bluetooth discovery 的情境下,告知目標使用者誰要找他
  • 7. User Discovery Scenarios
    • Bluetooth mode discovery
  • 8. Infrastructure mode discovery
  • 9. Ad hoc mode discovery (1)
  • 10. Ad hoc mode discovery (2)
  • 11. 問題解決 ( Ad Hoc ARP ) 問題: ICMP Redirect for Host 解決:將三台 IP Address 改成不同的 subnet
  • 12. Evaluation Bluetooth mode discovery message 1
  • 13. Evaluation Bluetooth mode discovery message 2
  • 14. Infrastructure mode message 1
  • 15. Infrastructure mode message 2
  • 16. 結論
    • 實作 user discovery protocol ,訂定各種搜尋環境,以 Bluetooth 與 802.11 的 infrastructure mode 及 ad hoc mode 串起整個架構,讓使用者可以透過各種方式管道,盡其所能的去尋找他的好友,將資訊傳遞分享給他,並透過 Bluetooth PAN profile 連結 Bluetooth 與 802.11 ,使其能與通訊能力較不足的 device 互通