A Survey on Resourceful Estimation of Wireless Sensor Networks
Mahendrakar Yashoda Bai, R Venkata Krishnaiah · 2013
The manufacturing of small and low cost sensors became technically and economically feasible due to recent technological advances. The sensing electronics measure ambient conditions related to the environment surrounding the sensor and convert them into an electric signal. To considerately pass their data through the network to a main location a wireless sensor network (WSN) consists of spatially dispersed autonomous sensors to supervise physical or environmental circumstances. Some or more important data’s may be dropped if congestion occurs in the Wireless Network. By addressing differentiated delivery requirements we handle this problem in our paper. Based on the congested areas of a network and data priority a class of algorithms is proposed in our paper to enforce differentiated routing. Using simple forwarding rules a basic protocol, called Congestion-Aware Routing (CAR) discovers the congested zone of the network that exists between high-priority data sources and the data sink and dedicates this part of the network to forwarding mainly high-priority traffic. It is unsuitable for highly mobile data sources since CAR requires some overhead for establishing the high-priority routing zone. For forming high priority paths on the fly for each burst of data, we define Mac-Enhanced Congestion Aware Routing (MCAR), which includes medium-access control (MAC) -layer enhancements and a protocol. MCAR efficiently handles the mobility of high-priority data sources, at the outflow of debasing the performance of lowpriority traffic.