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。
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.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第12期1937-1939,1986,共4页
Journal of Hefei University of Technology：Natural Science
关键词
射频识别
ALOHA算法
抗冲突
动态时隙
：radio frequency identification（RFID）
ALOHA algorithm
anti-collision
dynamic slot
