J4 ›› 2013, Vol. 40 ›› Issue (6): 162-167+179.doi: 10.3969/j.issn.1001-2400.2013.06.027

• 研究论文 • 上一篇    下一篇

自适应多维维分编码RFID防碰撞算法

李致金1;周杰1;乔杰1;吴文娟2   

  1. (1. 南京信息工程大学 电子与信息工程学院,江苏 南京  210044;
    2. 南京林业大学 数理学院,江苏 南京  210017)
  • 收稿日期:2012-08-02 出版日期:2013-12-20 发布日期:2014-01-10
  • 作者简介:李致金(1973-),男,讲师,南京信息工程大学博士研究生,E-mail: lizhijin@nuist.edu.cn.
  • 基金资助:

    江苏省行业专项基金资助项目(20110230);江苏高校优势学科建设工程资助项目;江苏省气象探测与信息处理重点实验室资助项目;江苏省气象传感网技术工程中心资助项目

Research on RFID anti-collision algorithms based on  adaptive multi-dimension division code

LI Zhijin1;ZHOU Jie1;QIAO Jie1;WU Wenjuan2   

  1. (1. College of Electronic & Information Engineering, Nanjing Univ. of Information Science & Technology, Nanjing  210044, China;
    2. College of Science, Nanjing Forestry Univ., Nanjing  210017, China)
  • Received:2012-08-02 Online:2013-12-20 Published:2014-01-10

摘要:

提出了多维维分编码(MDDC)的算法.该算法在阅读器范围内标签碰撞较多时,阅读器呼叫每个标签的平均次数趋近4/3,呼叫每个标签所传输的数据量趋近于常数.针对多维维分编码算法在碰撞次数少时平均呼叫次数、平均发送数据量相对较大的问题,又提出自适应多维维分编码(Adaptive-MDCC)降维算法.该算法中,阅读器根据范围内的标签数目,自适应地降低维分编码的维数,并对标签重新编码,大大降低搜索较少标签时的平均呼叫次数和平均数据量.因此,自适应多维维分编码算法无论在标签较多碰撞和较少碰撞时,都能很好地提高搜索的效率.

关键词: 自适应, 维分编码, 无线射频识别, 防碰撞

Abstract:

First, the Multi-Dimension Division Code algorithm is proposed. If there are many tags and many collisions, by using this algorithm, the number of times by which the reader calls each tag and the data used will be greatly decreased. With more and more collisions, the AVG number of TIMES by which the reader searches for one tag will tend to a limit: 4/3,and the data with which the reader searches for one tag will tend to a constant. Second, the adaptive Multi-Dimension Division Code algorithm is proposed. The adaptive Multi-Dimension Division Code algorithm can adaptively decrease the MDDC dimensions according to the numbers of the tags, and can encode the tags again. The adaptive Multi-Dimension Division Code algorithm will greatly improve the efficiency of searching for one tag, whether in many collisions or in few collisions. So the adaptive Multi-Dimension Division Code algorithm is a very good algorithm for searching for one tag in the RFID system.

Key words: adaptive, multi-dimension division code, RFID, anti-collision

中图分类号: 

  • TN92