Early Frame Restart in RFID Systems

Abstract. Throughput of inventoried tags is one the most important performance parameters for RFID systems. This paper presents an en-hancement for the anti collision protocol for frame slotted ALOHA in RFID systems. It is especially designed for application with known size of the tag population such as in assembly lines or conveyer belts. It ex-ploits the fact of low probability regions of the event space and is based on restarting a frame after the observation of a part of the whole frame. The performance of this algorithm is evaluated on different tag popula-tions.