IEEE 802.15.4 센서 네트워크에서의 신뢰성 및 보안성 향상 기법
Improving Reliability and Security in IEEE 802.15.4 Wireless Sensor Networks
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초록
최근 무선 센서 네트워크에 적용되는 응용 서비스들은 점점 증가하며 다양화 되는 추세이고, 이에 센서 데이터에 대한 전송 신뢰성이나 보안 기능 제공이 핵심적인 이슈로 대두되고 있다. 본 논문에서는 IEEE 802.15.4 기반 센서 네트워크 환경에서 전송 신뢰성을 제공하기 위해 링크 특성과 패킷 타입을 고려하는 ALC(Adaptive Link Control)와 Hop-cache와 Hop-ack를 지원하는 EHHR(Enhanced Hop-by-Hop Reliability)이 적용된 IMHRS(IEEE 802.15.4 MAC-based Hybrid hop-by-hop Reliability Scheme) 기법을 제안하였으며, 또한 네트워크와 애플리케이션 특성을 고려하여 보안 슈트를 결정함으로써 에너지 효율성을 고려하는 HAS(Hybrid Adaptive Security) 프레임워크를 통해 보안성을 제공한다. 본 논문에서 제안된 방식들은 시뮬레이션과 실험을 통하여 검증 하였으며, 또한 H/W 프로토타입을 제작하여 실제 응용 서비스에 적용함으로써 본 방안의 효용성을 입증하였다.
Abstract
Recently, various application services in wireless sensor networks are more considered than before, and thus reliable and secure communication of sensor network is turning out as one of essential issues. This paper studies such communication in IEEE 802.15.4 based sensor network. We present IMHRS (IEEE 802.15.4 MAC-based Hybrid hop-by-hop Reliability Scheme) employing EHHR (Enhanced Hop-by-Hop Reliability), which uses Hop-cache and Hop-ack and ALC (Adaptive Link Control), which considers link status and packet type. Also, by selecting security suite depending on network and application type, energy efficiency is considered based on HAS (Hybrid Adaptive Security) Framework. The presented schemes are evaluated by simulations and experiments. Besides, the prototype system is developed and tested to show the potential efficiency.
참고문헌 (18)
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