基于EPC Class-1 Gen-2标准的防冲突算法与改进  

Anti-collision Algorithm Based on EPC Class-1 Gen-2 Standard and Its Improvement

作　　者：张瑞子[1,2] 南琳[1] 胡琨元[1] 田景贺[1,2] 

机构地区：[1]中科院沈阳自动化研究所,沈阳110016 [2]中国科学院研究生院,北京100039

出　　处：《计算机工程》2009年第2期24-26,共3页Computer Engineering

基　　金：RFID系统集成应用关键技术研究基金资助项目(06F2060201);智能RFID中间件平台开发与关键技术攻关基金资助项目(07L2020201)

摘　　要：针对RFID读写器识别多标签过程中出现的冲突问题,研究并实现了EPC Class-1 Gen-2标准中的防冲突算法,即时隙随机算法(SR算法),同时针对SR算法的不足提出改进算法。改进算法采用不避让冲突时隙的处理方式,降低了由时隙的随机选取所导致的标签间冲突的概率。实验结果证明,改进后的算法在通信次数和吞吐率方面均优于原算法,有效提高标签识别效率。This paper analyzes and implements the anti-collision algorithm of EPC Class-1 Gen-2 protocol for the problem of signal collision. It presents an improved algorithm of it. The improved algorithm does not parry the collided slots, which can reduce the probability of collision caused by random slot choice. The results of the experiment show that the improved algorithm, compared with the original algorithm, has less communications and better throughout. So the improved algorithm is a feasible and efficient solution to identify EPC Class-1 Gen-2 tags.

关 键 词：防冲突 EPC Class-1 Gen-2标准 ALOHA算法 标签识别 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]