Abstract
Wireless Sensor Networks (WSNs) are autonomous and structure-less dynamic networks which consist of spatially distributed sensor nodes to support real-time applications. However, due to limited resource availability these networks face certain challenges. Many researchers address bandwidth and delay using different approaches to increase the quality of service (QoS). Almost all researchers address loss calculation using sliding window flow control protocol, which may not always give an optimum solution. So, accurate loss calculation is necessary to increase the packet delivery ratio (PDR) which in turn increases QoS. In this paper, a mathematical model is proposed to enhance the loss calculation in WSNs using Poisson theory.