A SURVEY ON CONGESTION CONTROL SYSTEM IN WIRELESS SENSOR NETWORKS

Abstract

Wireless Sensor Networks are occasion based system that comprises of an accumulation of autonomous sensor nodes that arespatially disseminated and helpfully monitor physical and ecological conditions. At the point when an occasion has been distinguished these sensor nodes become active in transmitting the data what's more, the heap turns out to be overwhelming, expanding the information activity and this might prompt congestion that outcomes in packet drops, throughput reduction and degradation of channel quality which in turndiminish network execution. Congestion is a major problem in almost all kinds of wireless networks such as mobile ad-hoc networks; wireless sensor networks (WSNs). There are variety of applications of WSN such as defense, temperature monitoring, health monitoring. Congestion occurs in the sensor network because of limited resources such as low processing power of the sensor node. As all the sensor nodes are battery powered. Hence, congestion in the sensor network results in waste of energy of sensor nodes. All the layers of protocol suite of the network can be involved in the congestion control process. A congestion control scheme is important to monitor and manage the traffic levels at an satisfactory value. This paper survey different existing works utilized for recognizing and controlling congestion. Diverse execution metrics that are utilized for estimating congestion was moreover surveyed. Finally a comparison of various performancemeasures was presented.