一种改进的动态帧时隙ALOHA算法  

An Improved Dynamic Frame Slotted ALOHA Algorithm

作　　者：邹东尧[1] 杨威[1] 陈鹏伟 ZOU Dongyao;YANG Wei;CHEN Pengwei(School of Computer and Communication Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业学院计算机与通信工程学院,郑州450001

出　　处：《湖北民族学院学报（自然科学版）》2018年第2期184-188,共5页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：河南省高等学校重点科研项目(15A520109);河南省科技厅科技攻关项目(112102210321)

摘　　要：动态帧时隙ALOHA(DFSA)已被广泛用于解决射频识别(RFID)系统中的防碰撞问题.在DFSA算法中,标签估计和帧长的调整是影响阅读器读取性能的关键因素.针对以上两点,提出了一种改进的动态帧时隙ALOHA算法.在改进的算法中,分析了标签估计误差对系统的影响,采用对帧长的早期调整的机制.通过实验表明,改进的算法不但降低系统的功耗,而且提高了系统的吞吐率.Dynamic Frame Slot ALOHA （DFSA） has been widely used to solve collision avoidance problems in radio frequency identification （RFID） systems. In the DFSA algorithm, tag estimation and frame length adjustment are the key factors affecting the reader performance.In view of the above two points, an improved ALOHA algorithm for dynamic frame time slot is proposed. In the improved algorithm, the influence of tag estimation error on the system is analyzed, and the mechanism of early adjustment of frame length is adopted.Experiments show that our improved algorithm not only reduces the system power consumption, but also improves the throughput of the system.

关 键 词：ALOHA算法 防碰撞 吞吐率 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]