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Active scanning (AS) is a mechanism provided by the 802.11 standard by which WiFi clients proactively search for access points (APs) in their vicinity. To do so, a client sends out a probe request, in response to which all APs that hear the request send a probe response. Prior works have reported severe degradation in performance of WiFi networks due to excessive AS. In practice, a client triggers...
IEEE 802.11 WLAN (Wireless or WiFi LAN) clients discover neighboring APs (Access Points) by active or passive scanning. Such an active scan of WLAN injects probe frames in the network. Network conditions like packet losses, roaming, etc. result in increased active scanning and hence, an excessive increase of the probe traffic. Of the several causes inherent to WLANs like interference, we find an excessive...
Guaranteed data delivery within certain time bounds and high probability of success is required by many continuous event monitoring applications. A low complexity protocol for network connectivity and data transfer to the base station from any location in the recognized area is proposed for designing a robust Wireless Sensor Network for such applications. A simulator is developed to study its effectiveness...
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