摘要
动态射频识别系统中标签沿着固定的轨道移动,在阅读器有效识别范围内存在新进标签、成功识别标签以及离开有效区未识别标签。传统的增强型动态帧时隙ALOHA及其改进算法大多基于静态标签场景,没有考虑移动标签带来的影响,无法对动态射频识别系统中的待识别标签数量进行准确的估计。本文基于动态射频识别场景提出一种改进的EDFSA标签防碰撞算法,对系统有效识别区内的标签进行更为准确的估计。算法仿真结果表明,本文提出的防碰撞算法可以有效地提高标签识别率并减少标签的丢失率。
Tags in dynamic RFID systems move along fixed track. There are new tags, successfully identified tags and unrecognized tags leaving the effective recognition range of the reader. The traditional EDFSA and its modified algorithm are mostly based on the static tag scene. Without considering the impact of moving tags, it is impossible to precisely estimate the number of unrecognized tags in the dynamic RFID systems. In terms of dynamic RFID scene, a modified algorithm for anti-collision based on EDFSA is proposed to estimate the tags in the effective identification zone of the system more accurately. The simulation results show that the anti-collision algorithm proposed in this paper can effectively improve the tag recognition rate and reduce the tag loss rate.
作者
许守成
胡静
宋铁成
Xu Shoucheng;Hu Jing;Song Tiecheng(School of Information Science and Engineering, Southeast University, Nanjing 210096, China)
出处
《信息化研究》
2019年第2期44-49,共6页
INFORMATIZATION RESEARCH
基金
国家自然科学基金项目(61372104)
