Date Added: Aug 2009
In this paper, the authors propose an analytic model to analyze a Wireless Sensor Network (WSN) operating the IEEE 802.15.4 slotted CSMA/CA protocol with ACK mode. Based on the renewal approximation, they first develop an analytic model for a homogeneous WSN where all nodes in the network have the same traffic characteristic. Using their analytical model, they obtain performance metrics such as network throughput, average service time for successful transmissions, the transmission success probability, the frame dropping probability due to transmission failures, and the frame dropping probability due to CCA failures. Through numerical studies and simulations, they validate their analytic model.