Shoorangiz Shams Shamsabad Farahani
Narges Masoomabadi
Mahdi Ghasemi Naraghi

ABSTRACT Congestion is an important problem in wireless sensor networks (WSNs). It ends in loss rate rise, increased delay, unfair traffic flow, channel quality degradation, and wasted energy. It also badly affects throughput, network life time, number of retransmissions, and link utilization. So, it is necessary to mitigate congestion in WSNs. Due to the important role of WSNs, more efficient congestion control algorithms are required. In this paper, a comprehensive review of traffic-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, traffic control schemes.