Changes between Version 27 and Version 28 of 802.11/wlan_exp/app_notes/dcf_with_multiple_flows


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Timestamp:
Apr 17, 2014, 10:56:16 AM (10 years ago)
Author:
chunter
Comment:

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  • 802.11/wlan_exp/app_notes/dcf_with_multiple_flows

    v27 v28  
    179179== Conclusion ==
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    181 In this application note, we used the WLAN Experimental Framework to study behaviors of the DCF. We used the framework's event logs to dive deeply into this behaviors and describe transient effects -- we are not limited to coarse aggregate measures of performance. An extension to this experiment would be to remove the RF cabling altogether and investigate over-the-air performance. In this scenario, there is much more to deal with. For example, there will be interference from other ISM band transmitters and there will also be multipath fading. The WLAN Experimental Framework can help decipher the guiding forces behind the performance that is observed. For example, the [wiki:../../examples/chan_est_viewer Channel Estimate Viewer] shows how to extract channel estimates from the log. This can be viewed and analyzed alongside MAC events to help uncover the causes of performance changes.
     181In this application note, we used the WLAN Experimental Framework to study behaviors of the DCF. We used the framework's event logs to dive deeply into these behaviors and describe transient effects -- we are not limited to coarse aggregate measures of performance. An extension to this experiment would be to remove the RF cabling altogether and investigate over-the-air performance. In this scenario, there is much more to deal with. For example, there will be interference from other ISM band transmitters and there will also be multipath fading. The WLAN Experimental Framework can help uncover the guiding forces behind the performance that is observed. For example, the [wiki:../../examples/chan_est_viewer Channel Estimate Viewer] shows how to extract channel estimates from the log. This can be viewed and analyzed alongside MAC events to help uncover PHY reasons for the causes of performance changes.
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