Linux Driver Final Project A Better Decision to APs Switch - sense the current APs signaling - evaluate the network performance - integrate both modules.

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Linux Driver Final Project A Better Decision to APs Switch - sense the current APs signaling - evaluate the network performance - integrate both modules 報告人：胡維峰

 當你坐在教室使用 WiFi 訊號上網，離開教室後上網的 裝置希望在不斷線的狀態下，自動切換到 3G 、或 WiMAX 不同的網路，該怎麼做 ? Multi-radio Silicon Seamless Networking Worldwide Standards

Application Mobile IPv6 Real-timeNon-Real-time Multi-interface Management WiFiWiMAX Application Layer Network Layer Data Link Layer 3G/GPRS … Session Mobility API Socket Library Network Interface Monitor SIP API

What to Do?  In environment, select a better access node from current_AP and candidate_AP.  Sense the current network status. iwlist module – signal strength management tool iperf kit - bandwidth measurement tool  User-oriented decision to which AP accessed.

iwlist /sbin/iwlist wlan0 scanning wlan0 Scan completed :c Cell 01 - Address: 00:0D:BD:6F:B4:48) ESSID:"" Protocol:IEEE b Mode:Master Channel:6 Encryption key:on Bit Rate:11 Mb/s Extra: Rates (Mb/s): Extra: Signal: -70 dBm Extra: Last beacon: 59ms ago Cell 02 - Address: 86:CF:C1:34:12:06W ESSID:"gnawux" Protocol:IEEE b Mode:Ad-Hoc Channel:11 Encryption key:off Bit Rate:11 Mb/s Extra: Rates (Mb/s): Extra: Signal: -37 dBm Extra: Last beacon: 2ms ago

iperf Client connecting to , TCP port 5001 TCP window size: 8.00 KByte (default) [1924] local (your IP) port 1500 connected with port 5001 [ ID] Interval Transfer Bandwidth [1924] sec 111 MBytes 92.9 Mbits/sec

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