Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Design of Spatio-temporal Indexing for searching location of RFID Objects

RFID 객체의 위치 검색을 위한 시공간 색인 설계

  • Jun, Bong-Gi (Dept. of Computer Engineering, Silla University)
  • 전봉기 (신라대학교 컴퓨터공학과)
  • Received : 2014.05.03
  • Accepted : 2014.05.16
  • Published : 2014.05.31
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Abstract

The RFID-tag objects can be recognized by a distinct reader where it is installed. The RFID-tag objects are likely described as storages rather than the mobiles in the use of GPS. As RFID tags are large in number compared to moving objects, so the storing and retrieval costs are highly expensive. Here, two solutions for spatio-temporal model taking account of the feature in the tagged objects are proposed. First, the moving-tag objects are expressed by the terms "now" as well as "path location". Second, the size of storing index was noticeably reduced by not saving the tag information of palletizing products but mapping the tagged objects.

RFID 태그 객체는 리더기가 설치된 곳에서만 인식할 수 있다. GPS를 사용하는 기존의 이동체와 달리 RFID태그 객체는 이동의 개념보다 보관의 개념으로 이해된다. RFID 태그 객체의 수는 이동체에 비해 매우 많기 때문에, 태그 객체의 이동을 저장 및 검색 비용이 크다. 이 논문에서는 태그 객체의 특징을 고려한 시공간 데이터 모델을 위해 두 가지 해결 방법을 제안한다. 첫째, 태그 객체의 이동을 경로(PATH) 위치와 'NOW' 개념을 사용하여 표현하였다. 둘째, 파렛타이징된 상품의 태그 정보는 저장하지 않음으로써 태그 객체를 묶음으로 표현하여 색인의 크기를 줄였다.

Keywords

References

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