A RFID Explicit Tag Estimation Scheme for Dynamic Framed-Slot ALOHA Anti-Collision

Radio Frequency Identification (RFID) systems consist of fast capturing radio frequency tags and networked electromagnetic readers. Despite the advances of the RFID technology, tag collision is a major problem and can be solved by using the anti-collision scheme. The current ALOHA-based approach suffers from tag starvation problem due to the inaccurate frame size. In this paper, we propose a "RFID Explicit Tag Estimation Scheme" (RETES) for a Dynamic Framed-Slot ALOHA (DFSA), which estimate precise number of tags around the reader and compatible with Electronic Product Code (EPC) Class 1 Generation 2. The preliminary findings indicated that our method achieves better outcome than existing techniques. We identified that the variations of specific RETES\´s parameters impact the DFSA\´s performance. Therefore, to achieve the best performance the parameters should be dynamically adjusted over the process of identification.