基于空闲时隙探测机制的分组帧时隙标签防碰撞算法

Tag Anti-collision Algorithm for Grouped Frame Time Slots Based on Idle Time Slot Detection Mechanism

多标签碰撞是射频识别系统中无法避免的问题,大量的标签碰撞会增加系统的能量消耗和时间开销,严重影响系统的识别效率。为此提出一种新型的标签防碰撞算法,该算法结合了传统帧时隙算法简单易实施的优点,同时引入了分组和空闲时隙探测机制,以极小的探测时隙开销,消除了识别过程中的空闲时隙,同时减低了标签冲突概率。仿真结果显示,相对于FuzzyQ算法和帧时隙ALOHA算法,本算法平均吞吐率提高了22.64%和61.74%,系统通信传输量平均节省了16.73%和30.41%。

Multi tag collision is an unavoidable problem in radio frequency identification systems.A large number of tag collisions can increase the energy consumption and time cost of the system,seriously affecting the recognition efficiency of the system.To this end,a new tag anti-collision algorithm is proposed,which combines the advantages of traditional frame slot algorithms that are simple and easy to implement.At the same time,grouping and idle slot detection mechanisms are introduced to minimize detection slot overhead,eliminate idle slots in the recognition process,and reduce the probability of tag conflicts.The simulation results show that compared to the FuzzyQ algorithm and the frame slot ALOHA algorithm,the average throughput of this algorithm has been improved by 22.64%and 61.74%,and the system communication transmission has been saved by 16.73%and 30.41%on average.