유비쿼터스 네트워크 시대가 도래함에 따라 위치인식 기반 응용 서비스 요구 증대에 따른 위치인식 무선 개인영역 네트워크(WPAN) 시스템이 주목을 받고 있다. 특히 초광대역(UWB) 기술은 저비용, 저소비전력으로 통신뿐만 아니라 실내나 음영지역에서 수십 cm급 이내의 정밀한 위치인식/추적 기능을 줄 수 있어, 유비쿼터스 홈을 구축하기 위한 핵심 기술로 인식되고 있으며, 저속 위치인식 WPAN 표준인 IEEE 802.15.4a의 물리계층(PHY)으로 채택되었다. 본 원고에서는 위치인식 UWB 기술과 관련한 IEEE 802.15.4a 표준화 현황과 기술 동향에 대해서 살펴보고자 한다.
KSP Keywords
IEEE 802.15.4a
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