Abstract: Aiming at the problem of low recognition efficiency of existing algorithms, we proposed a radio frequency identification (RFID) anticollision algorithm based on equal area division. Firstly, a novel grouping structure was established by dividing the tags in the range of reader recognition into equal area. Secondly, dynamic prediction weights were used to estimate the number of tags in each group. Finally, it was combined with the optimal number of time slot adjustment scheme to identify the tags, which solved the problems of poor system stability and low throughput caused by the increase of tags in largescale tag application scenarios. Simulation results show that the algorithm can effectively improve the throughput rate of system and reduce the number of time slots in the communication process.

Key words: anticollision, equal area division, dynamic prediction weight, optimal number of time slot