| 基于EPC-C1G2协议的多标签识别性能分析 |
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| 引用本文： | 穆兰,鞠苏明.基于EPC-C1G2协议的多标签识别性能分析[J].现代电子技术,2007,30(19):4-6. |
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| 作者姓名： | 穆兰 鞠苏明 |
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| 作者单位： | 1. 南京工程学院,江苏,南京,210013
2. 江苏瑞福智能科技有限公司,江苏,南京,210049 |
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| 摘 要： | EPC-C1G2协议属于EPCglobal组织发布的第二代超高频射频识别空中接口协议,该协议采用时槽ALOHA算法解决多标签识别时产生的碰撞问题.首先介绍了该协议多标签碰撞解决所需的参数和命令,协议中的Q值决定了解决碰撞时所用的时槽数.时槽数越多,标签越不容易碰撞,但识别时间却越长,因此,恰当地选择Q值可以在标签识别时间和识别标签数之间找到最佳平衡点.给出了两种碰撞解决流程,一种是固定Q值算法,另一种是递减Q值算法,并仿真分析了这两种多标签识别流程的性能.
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| 关 键 词： | 超高频 射频识别 电子产品码 标签 阅读器 |
| 文章编号： | 1004-373X（2007）19-004-03 |
| 收稿时间： | 2007-03-05 |
| 修稿时间： | 2007年3月5日 |
Performance of Multi-tag Inventory Based on EPC-C1G2 Protocol |
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| MU Lan,JU Suming.Performance of Multi-tag Inventory Based on EPC-C1G2 Protocol[J].Modern Electronic Technique,2007,30(19):4-6. |
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| Authors: | MU Lan JU Suming |
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| Affiliation: | 1, NanjJng Institute of Technology,Nanjing,210013,china;2. Jiangsu Ruifu Intelligent Technology Co. Ltd. ,Nanjing,210049,China |
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| Abstract: | EPC-C1G2 protocol is the secondary standard of UHF RFID air interface,which is published by EPCglobal.The slotted ALOHA algorithm is used to solve the collision problem in the multi-tag inventory.At first,the commands and parameters of multi-tag anti-collision of this protocol are introduced.The Q value of protocol decides the slot count of anti-collision algorithm.If the amount of slot is larger,the collision of tags becomes less happening,but the time of inventory all tags becomes longer.The Q value is properly selected so that the best point between the inventory time and the number of tags can be found.Then two processes of anti-collision,Q algorithm and degressive Q algorithm are described.Also the performance of these processes are simulated and analyzed. |
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| Keywords: | Ultra-High Frequency(UHF) Radio-Frequency Identification(RFID) electronic product code tag collision arithmetic |
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