RFID系统标签防碰撞的研究与改进  

Research and improvement on RFID system tags anti-collision

作　　者：孙文胜[1] 刘先宝[1] 

机构地区：[1]杭州电子科技大学通信工程学院,杭州310018

出　　处：《计算机工程与应用》2012年第16期103-106,共4页Computer Engineering and Applications

摘　　要：RFID系统中标签碰撞是一个常见问题。为解决该问题,基于Gen-2协议提出了一种改进算法,该算法考虑到阅读器对碰撞时隙和空闲时隙的响应时间不同,运用两个不同的C值动态调整Q值,并在碰撞的情况下对时隙进行局部调整,减少了标签的识别通信次数,提高了系统吞吐率,并通过仿真得到验证。In RFID systems, tag collision is a common problem. In order to solve this problem, an improved algorithm based on the Gen-2 protocol is proposed. This algorithm considers the different times of reader’s response to collision and idle slots, and uses two different C values to adjust Q value dynamically. When the tags collision, it will localize adjust slots. The algorithm will reduce the tags’communication frequency, and increase system throughput rate. It has been verified by the simulation.

关 键 词：防碰撞 Gen-2协议 无线电频率识别(RFID) Q值 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]