一种基于冲突调解的大规模RFID系统未知标签识别协议研究

Research on an Unknown Tag Identification Protocol for Large-scale RFID System Based on Collision Reconciliation

未知标签识别是实际RFID系统中的一种重要识别方法,其目的是判断未知标签对象是否出现在询问区域并对其进行识别。但现有的未知标签识别协议存在时隙浪费和假正率高的问题,针对这些问题,提出了一种高效的基于冲突调解的未知标签识别(UTIBCR)协议,该协议采用布谷滤波器将冲突时隙调解为单时隙,以提高时隙利用率;并通过每个标签生成的指纹来标记标签本身,将未知标签与已知标签分开,以降低假正率。理论分析和仿真实验结果表明:UTIBCR协议在识别效率和准确性方面都优于当前已存在的协议。

Unknown tag identification is an important identification method in the actual RFID system to judge whether the unknown tag object appears in the query area and is identified.But the existing unknown tag identification protocols have the problems of time slot waste and high false positive rate.To solve these problems,an efficient unknown tag identification protocol based on collision reconciliation(UTIBCR)is proposed.The protocol uses a Cuckoo filter to mediate the conflict time slot into a single time slot and improves the time slot utilization.The protocol marks label through the fingerprint generated by each tag and separates the unknown tag from the known tag to reduce the false positive rate.Theoretical analysis and simulation results show that UTIBCR protocol is superior to the existing protocols in recognition efficiency and accuracy.