유비쿼터스 환경이 발전하면서 센서를 활용한 응용 서비스 개발 요구가 확대되고 있다. 다양한 센서 기반의 응용 서비스 구축을 지원하기 위해 센서와 서비스를 연계시킬 수 있는 센서 데이터 스트림 처리 미들웨어가 개발되고 있다. UbiCore 시스템은 XML 기반의 센서 데이터 스트림 처리 미들웨어이며, 본 논문에서는 UbiCore 시스템에 적용한 데이터 스트림 및 로깅 데이터에 대한 권한 관리 및 접근 제어 방법을 제안한다. 제안한 방법을 사용하면 XML 기반의 실시간 연속 데이터 스트림에 대하여 XML 구조 기반의 접근 제어뿐만 아니라 값의 범위에 대한 접근 제어가 가능하다.
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