Dynamic Frame Slotted ALOHA Algorithm Based on Improved Tag Estimation

In the RFID system, to solve the problem of tag collision has always been the need to study.Dynamic frame slotted algorithm is one of the more mature algorithms, In this paper, based on the research of the dynamic frame slotted algorithm analysis, put forward key points for the improvement of the algorithm:Improve the accuracy of the tag estimation and the determination of the optimal frame length, as for the large number of tags, group them first, and then adjust the frame length dynamically within the group to make the system more efficient.Experiment shows that compared with the traditional dynamic frame slotted algorithm, the throughput of this algorithm can neglect the number of tags maintaining at the system extremum of 36.8%, the number of used slots is lower than the traditional algorithm and the improved dynamic frame slotted algorithm.