최근 들어 무선 센서네트워크는 온/습도 관리와 같은 단순한 기능의 저전력 모니터링 서비스에서 시의성과 무선 전송의 신뢰성을 요구하는 산업 자동화 서비스 및 스마트 그리드와 같이 통신 거리를 확장한 옥외 서비스를 위한 기술로 서비스 영역을 넓혀가고 있다. 무선 센서네트워크 기술은 자원의 제약에 기인한 고유의 특성을 갖는다. 특히 전송 계층 기술은 이러한 제약 사항을 고려하여 설계되어야 하며, 상위 계층 기술의 성능은 전송기술에 대한 성능적 의존성을 가질 수 밖에 없다. 본 고에서는 최근 무선센서네트워크 서비스 확대를 위한 시장의 요구사항을 반영하여 표준화가 진행되고 있는 시의성/신뢰성 향상을 위한 IEEE 802 WG15의 TG4e MAC 기술과 스마트 유틸리티 네트워크를 위한 TG4g SUN PHY 기술에 대한 표준화 활동을 중심으로 표준 기술 동향을 소개하고 이에 대한 표준 전략을 분석한다.
KSP Keywords
IEEE 802
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