UHF 대역 RFID 전파경로에서의 전파간섭 모델링 및 채널 운용 방안 제안

Modeling of Propagation Interference and Channel Application Solution Suggestion In the UHF Band RFID Propagation Path

  • 문영주 (국민대학교 전자공학과) ;
  • 여선미 (국민대학교 전자공학과) ;
  • 전부원 (국민대학교 전자공학과) ;
  • 노형환 (국민대학교 전자공학과) ;
  • 정명섭 (국민대학교 전자공학부 BK21) ;
  • 오하령 (국민대학교 전자정보통신공학부) ;
  • 성영락 (국민대학교 전자정보통신공학부) ;
  • 박준석 (국민대학교 전자정보통신공학부)
  • 발행 : 2008.11.01

초록

Auto-ID industries and their services have been improved since decades ago, and radio frequency identification (RFID) has been contributing in many applications. Product management can be the foremost example. In our industrial experiences, RFID in ultra high frequency (UHF) band provides much longer interrogation ranges than that of 13.56MHz; many more applications exist thereby. There should be several interesting and useful ideas on UHF RFID; however, those ideas can be limited due to the inevitable environmental circumstances that restrict the interrogation range in shorten value. This paper discusses the propagation interference among different types of readers (e.g, mobile RFID readers in stationary reader zone) in dense-reader environment. In most cases, UHF RFIDs in Korea will be dependent on the UHF mobile RFIDs. In this sense, the UHF mobile users accidently move into the stationary reader's interrogation zone. This is serious problem. In this paper, we analyze propagation loss and propose the effective channel allocation scheme that can contribute developing less-invasive UHF RFID networks. The simulation and practical measurement process using the commercial CAD tools and measurement equipments are presented.

키워드

참고문헌

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