基于分组的动态帧时隙ALOHA防碰撞算法

On RFID Anti-collision Algorithm Based on Grouping Dynamic Frame Slotted ALOHA

为了解决多标签防碰撞问题,对目前最常用的帧时隙ALOHA防碰撞算法进行详细的分析后,通过比较指出各种防碰撞算法的优缺点.提出了一种通过分组限制响应标签数量并调整帧长的防碰撞改进算法.仿真表明,该算法优于现有的动态帧时隙ALOHA算法,无论标签数目多少,均可获得最佳系统效率.

In order to find a solution for the multi-tab anti-collision problem,an in-depth analysis is made of the most commonly-used framed slotted ALOHA anti-collision algorithm.A comparison is made and finds the algorithm has its advantages and disadvantages.An improved algorithm,by means of grouping the response tags and restricting the number of them and dynamically adjusting the frame length,is proposed.The simulation result shows that the system efficiency of the improved algorithm outperforms that of the framed slotted ALOHA.No matter how many tags there are in the field,it can achieve the optimal system efficiency.