Description: Physical and virtual carrier-sense functions are used to determine the state of the medium. When either function indicates a busy medium, the medium shall be considered busy; otherwise, it shall be considered idle. This video is about the virtual carrier sensing mechanism. Virtual carrier sense mechanism is provided by the MAC layer and this mechanism is also called as Network Allocation Vector (NAV) mechanism. The NAV maintains the prediction of the traffic on the channel depending upon the value of duration field. The final decision of sending packet will depend upon the physical as well as virtual carrier sense mechanisms. <p> This video explains more about the working of NAV mechanism and talks about some rules needed to be followed to update the NAV field. Video also talks about the usage of the NAV field in hidden node problem. </p>This video series is a tutorial for IEEE 802.11 protocol suite, commonly knows as Wi-Fi. In this video series, you will find videos explaining the basic 802.11 standard and their other amendments like 802.11a, 802.11g, 80211h, 802.11i, 802.11w, 802.11n, 802.11e etc. There are videos dedicated to security in wifi protocols, the different packets and state machine of 802.11 protocol and many more such things. We have tried to make this video series more interactive than just informative. You will find lots of discussions over the issues in 802.11 and justification for many small features in 802.11. Feel free to pose your own problems in the comment section and we will try to capture them in next videos. This section is currently under construction, so keep watching for new content.
Tags: basics ,
Disclaimer: We are a infosec video aggregator and this video is linked from an external website. The original author may be different from the user re-posting/linking it here. Please do not assume the authors to be same without verifying.