Local Buffer Management Algorithm in Wireless Sensor Networks with Mobile Collectors

In wireless Sensor Networks(WSNs), the energy for the sensor nodes that are close to the base station will be quickly depleted due to their high data transmission activities. To address the problem, the concept of Mobile Collectors(MC) is introduced, but in spite of it, local buffer management algorithm is needed, which is our main concern in this paper. At first, each sensor only transmits its gathered data with a MC. If a raw data shows regularity two consecutive periods according to criterion(theta) , the value will be stored in a different form. To do so, local buffer is divided into two parts : Correct Data(CD) and Differential Data(DD). In this way, the data needs less storage without the loss of data accuracy. We have implemented a simulator to evaluate the efficiency of the proposed algorithm. From the results, we come to know our algorithm is fairly efficient compared with the normal form.