802.11e testbed

  • 20 nodes, Atheros chipset, modified Linux MADWiFi driver
    • Voice & TCP traffic generators
    • Instrumented to measure throughout & loss
  • Also MAC delay instrumentation. Measurement of one-way delay known to be tricky - clock synchronisation issues mitigate against sub-millisecond timing needed to measure MAC performance.We catch device interrupt on completion of packet transmission - no synch issues, microsecond accuracy.
  • Validated against simulation & analytic models
Hamilton Institute - National University of Ireland Maynooth - Co. Kildare - Ireland Tel. + 353 (0) 17086100 - Fax. +353 (0) 17086269 - email hamilton@nuim.ie