Background and Motivation · Previous studies: experiments in a small scale (< 20 tags) reading performance in a close to free space scenario didn,'t consider important factors(e.g, reader power, tag density) Previous work does not give a model for RFID reading process in a realistic and large scale setting it does not include the power and tag density.Background and Motivation • Previous studies: – experiments in a small scale (< 20 tags). – reading performance in a close to free space scenario. – didn't consider important factors (e.g., reader power, tag density) • Previous work does not give a model for RFID reading process in a realistic and large scale setting – it does not include the power and tag density