Dynamic error control scheme based on channel characteristics in wireless sensor networks

The application of wireless technology is increasingly influencing the deployment of sensor networks at low cost and maintainance. Poor channel conditions, severe power constraints, interference and low power communication requirements magnify the need for energy efficient and preferably cross layer error control schemes for Wireless Sensor Networks (WSNs). The main goal of error control mechanisms in WSNs is to reduce energy consumption while taking care of reliable and fast delivery of the sensed data. We propose a Dynamic Error Control Scheme based on Channel Characteristics in Wireless Sensor Networks (DECSCC) that estimates the channel errors and controls errors dynamically based on channel characteristics and noise power observed at the receiver. We have have come up with the models for both the error and channel estimation. Analysis of simulation results for various message sizes and error conditions show improvement in terms of throughput and the probability of retransmissions.