| 基于改进ALOHA算法的RFID抗冲突问题 |
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| 引用本文： | 丁晓静,昂志敏,王楠.基于改进ALOHA算法的RFID抗冲突问题[J].合肥工业大学学报(自然科学版),2008,31(12). |
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| 作者姓名： | 丁晓静 昂志敏 王楠 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 摘 要： | 由标签引起的冲突一直是影响RFID系统性能的重要因素。文章介绍了经典的防冲突算法——ALOHA算法,根据冲突情况,从数学角度对动态时隙ALOHA算法的标签数作出实时估计,动态地改变帧长;提出一种基于分组的ALOHA算法,分析和仿真均证明该算法在标签数量巨大时能提高系统效率。
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| 关 键 词： | 射频识别 ALOHA算法 抗冲突 动态时隙 |
Anti-collision problem in RFID based on improved ALOHA algorithm |
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| DING Xiao-jing,ANG Zhi-min,WANG Nan.Anti-collision problem in RFID based on improved ALOHA algorithm[J].Journal of Hefei University of Technology(Natural Science),2008,31(12). |
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| Authors: | DING Xiao-jing ANG Zhi-min WANG Nan |
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| Abstract: | The collision caused by tags is one of the most important problems which affect the efficiency of the RFID system.This paper presents the classical ALOHA algorithm in detail and estimates the real-time number of tags according to the collision so as to change the length of the frame dynamically.Then a new algorithm based on grouping is proposed.Analysis and simulation both show that the presented EDFSA algorithm is very effective when the number of tags is huge. |
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| Keywords: | radio frequency identification(RFID) ALOHA algorithm anti-collision dynamic slot |
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