Congestion detection for video traffic in wireless sensor networks

Congestion control mechanisms include three phases: congestion detection, congestion notification and rate adjustment. So far diverse congestion detection methods for sensor networks are proposed. In this paper we introduce numerous congestion detection parameters and examine them in various respects; finally we choose one of them as the best parameter for video traffic in wireless sensor networks. Some of intended criteria for comparing the parameters are cost, relation to quality of video, locality or being global in the network, accuracy and speed of congestion detection. We simulated and concluded that average delay is the most suitable parameter for congestion detection in these networks.