A Comprehensive Survey on Applications of Wireless Sensor Networks and Approaches to Control Congestion

Wireless sensor networks are pushing ahead with drastic reforms of modern life for gathering information of different types from various fields. In real time the information gathered from sensor networks is used to increase the quality of services in daily life and various industries. This paper briefs about what is congestion, how it occurs, wireless sensor networks and different applications where the WSN works. One of the prime challenges of WSN is to achieve lossless data transmission. The nodes in WSN have limited resources so congestion causes critical damage to such network. Although sensor notes have enhanced capacities, due to unstable wireless links and less hardware resources, it is hard to assure lossless and end to end reliable data transmission to satisfy high quality of service (QOS). In this paper many approaches has been proposed to deal with this problem.