Evaluating the Energy Consumption of RFID Tag Collision Resolution Protocols

RFID technology is regarded as a bridge between the physical object world and the virtual digital space. In recent years, RFID system is pervading our daily life. In the RFID system, energy consumed by the reader and tags during tag identifier collection is becoming a key issue that affects the performance of the system, especially for the mobile RFID systems. In this paper, the energy consumed by both the reader and tag in resolving the collisions caused by that multiple tags try to transmit their identifiers simultaneously through the air interface is examined. The commonly used RFID tag collision resolution protocols include the frame slotted ALOHA based class 0 and 1 protocols, the binary query tree based protocols, are evaluated regarding to the performance metrics of energy consumption, and some usefully conclusion are drawn based on the evaluation.