Research on Multi-Tag Transmission Control Algorithm Based on Channel Division Dynamic Frame Slot

Research on Multi-Tag Transmission Control Algorithm Based on Channel Division Dynamic Frame Slot

The current anti-collision algorithm in multi-tag radio frequency identification systems relies on statistical estimation of the number distribution of labels, but because the range of objects arriving and leaving the reader depends on the application scenario and is dynamically changing and therefore the number distribution of labels does not follow a particular distribution. In this paper, a transmission control mechanism CDDFSA (Channel Division Dynamic Frame Slot ALOHA Algorithm) in a multi-label environment is proposed, which combines the capture effect and the moving speed of the object, and supports the dynamic adjustment of frame length, even if there is no prior knowledge on the number of labels it can also get a higher throughput. We designed experiments to evaluate four important indicators, such as tag estimates, tag actual values, frame length, and throughput. The experimental results show that CDDFSA has been greatly improved compared with the existing methods.