Priority-aware congestion control schemes in wireless sensor networks

Congestion is an important issue in wireless sensor networks (WSNs). Congestion renders loss rate rise, channel quality degradation, unfair traffic flow, increased delay and wasted energy. It also affects throughput, number of retransmissions, network life time and link utilization. So, it is necessary to mitigate congestion in WSNs. Due to the dominant role of WSNs, more efficient congestion control algorithms are needed. In this paper, a comprehensive review of priority-based congestion control schemes in WSNs is presented. Also, different performance metrics are used to compare priority-based congestion control algorithms.

Keywords:

Wireless sensor networks (WSNs) , Congestion control , Congestion detection , Congestion notification , Priority-aware congestion control.