Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (6): 76-79.doi: 10.13190/jbupt.200806.76.gengshq

• Reports • Previous Articles     Next Articles

Realization of the Adaptive Anti-Collision Method used in
Radio Frequency Identification System

GENG Shu-qin, GAO Da-ming, WANG Jin-hui, ZUO Lei, WU Wu-chen   

  1. (VLSI and System Lab, Beijing University of Technology, Beijing 100022, China)
  • Received:2007-12-16 Revised:2008-08-14 Online:2008-12-31 Published:2008-12-31
  • Contact: GENG Shu-Qin

Abstract:

An improved dynamic framed slotted Aloha algorithm (IDFSA) based on the radio frequency identification system is presented. IDFSA divides the tags into different frequency channels in the design period and saves the communication time. In the meantime, and IDFSA optimizes the real-time slots accounts obtained after frequency division, reducing the colliding efficiency up to 2.67 times, and improves the system efficiency. IDFSA dissolves the problem that the slots amount increases exponentially with an increasing of the identified tags amount. IDFSA has been used in the 433/868/915MHz system, verifying this method easy and efficiency.

Key words: radio frequency identification, communication, active tag, anti-collision, identification efficiency

CLC Number: