Abstract:

In order to further improve the identification speed of the tag, we propose a new anti-collision algorithm, called double idle factors parameter (DIFP) based on several typical dynamic frame slot aloha (DFSA) algorithms. The idea of the algorithm, the process of operation and determination of key parameters are elaborated in this paper. In this algorithm, the idle slots cannot only be detected but largely reduced through slot scanning. Meanwhile the collided tags can be immediately processed based on idle ratio as well to avoid multiple operations for tag collision. Simulation results show that compared with the standard QA algorithm, the proposed algorithm can decrease identification delay by 19% and increase identification speed by 10%.