Date Added: Nov 2012
Radio Frequency IDentification (RFID) is a ubiquitous wireless technology which allows objects to be identified automatically. An RFID tag is a small electronic device with an antenna and has a unique identification number. RFID tags can be categorized into passive and active tags. For passive tags, there exists a standard communication protocol called EPCglobal Generation-2, or briefly EPC Gen-2. In this paper, the authors investigate the EPC Gen-2 protocol and model it using an absorbing Markov chain. They formulate the proposed model and calculate the expected number of queries required to identify all tags in the system. Extensive simulations validate and confirm the accuracy of their proposed analytical model.