무선센서망을 위한 저전력 통신기술
Low Power Communication Method for Sensor Networks in Remote Medical System
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초록
IT기술의 급격한 발전을 통해서 과거 병원에서만 받을 수 있었던 전통적 의료 서비스가 원격 의료 시스템으로 확장되고 있다. 원격 의료 시스템은 환자가 언제 어디서나 신체의 건강 상태를 모니터링 하고, 진단 서비스를 제공 받는 것으로, 이러한 시스템이 가능하게 된 것은 무선통신 기술 발전의 공로가 크다. 본 논문에서는 의료 센서의 구성과 주요 동작을 분석하여 원격 의료 시스템에서 저전력 기술의 중요성을 도출하였다. 그리고, 시뮬레이션 결과를 통해서, 무선 통신 모듈의 전력 특성, 전송 능력과 간섭의 정도에 따라 최적 프로토콜은 달라질 수 있으며, 이를 능동적으로 적용할 수 있을 때, 에너지 소모를 최소화 할 수 있음을 확인하였다.
Abstract
Remote medical systems combining information technology (IT) and medical technology are capable of early diagnosis and health monitoring in everyday life. An important requirement for developing such remote medical system is to enhance the accuracy of bio information and maximize the life time of the medical sensor. In this paper, we analyze structures and tasks of a medical sensor and derive why low power communication technologies are important. Simulation results show that the optimum protocol can be changed by the performance and power consumption of a wireless communication module and interference ratio. Hence, the MAC protocol has to use the adaptive frame transmission scheme according to the interference ratio to reduce the energy consumption.
참고문헌 (13)
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