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

• Original Articles • Previous Articles     Next Articles

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
  • Contact: LI Zhijin E-mail:lizhijin@nuist.edu.cn

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

CLC Number: 

  • TN92