Distributed Cross Layer Congestion Control for Real-Time Video Over WLAN

The authors propose a distributed cross-layer congestion control algorithm that provides enhanced QoS and reliable operation for real-time uplink video over Wi-Fi applications. Such applications are characterized by many wireless devices transmitting video at various PHY rates over a relatively congested channel. Unfortunately, today's off-the-shelf 802.11 equipment can be easily demonstrated to suffer catastrophic failure when subject to these conditions - let alone provide acceptable perceptual quality to the user. They show that in order to remedy these issues, it is preferred to use a cross-layer approach rather than a single-layer approach.