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RFID 시스템 인식속도 개선을 위한 충돌방지 알고리즘

Anti-Collision Algorithm for High-Speed Tags in Active RFID System

  • 김익순 (수원지방검찰청 정보통신팀) ;
  • 김천석 (전남대학교 전자통신공학과)
  • 투고 : 2013.09.23
  • 심사 : 2013.12.16
  • 발행 : 2013.12.31

초록

RFID 시스템에서 해결하여야 할 가장 큰 문제 중 하나는 태그간의 충돌로 인해 인식 효율이 떨어진다는 것이다. 기존의 충돌 방식 중 BS 충돌 방지 알고리즘 방식은 구현이 간단하다는 장점이 있으나, 태그 수가 많아짐에 따라서 태그간 충돌에 의해 전체 태그를 읽는데 요구되는 단계별 스케줄 횟수가 증가하는 단점을 가지고 있다. 본 논문에서는 이 문제를 해결하기 위해서 충돌 예상을 최소화하기 위해 사전에 '0'과 '1'의 결정 비트를 통한 복수 응답 프레임 방식을 제안하였다.

In RFID System, one of the problem that we must slove is to devise a good anti-collision algorithms to improve the efficiency of tag identification which is usually low because of tag collision. Among of the existing RFID anti-collision algorithm, BS (Binary Search) algorithm, though simple, has a disadvantage that the stage 0f times used to identify the tags increase exponentially as the number of tags does. In this Paper, I propose a new anti-collision algorithm called Multi-collision reflected frame which restricts the number of stages and decided bit. Since the proposal algorithm keep the length size of UID and density of total tag when have 100%.

키워드

참고문헌

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