UML 상태 기계를 이용한 임베디드 소프트웨어의 소모 전력 분석
Analysis of Power Consumption for Embedded Software using UML State Machine Diagram
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초록
스마트 폰과 같은 모바일 기기에서 동작하는 응용 소프트웨어는 제한된 배터리 용량으로 인하여 안정적인 서비스를 지속적으로 제공하는데어려움을 갖는다. 과거에는 배터리의 수명을 연장 시키거나 소모전력이 적은 하드웨어 장치들을 개발하는 것으로 모바일 기기의 소모전력을 관리하였다. 그러나 시스템에 탑재되는 소프트웨어가 복잡해짐에 따라 소프트웨어에 대한 소모전력 분석 연구도 관심을 갖게 되었다. 이러한 연구들 중에서 모델 기반의 소모전력 분석은 코드가 개발되기 이전에 미리 소모전력을 분석하고, 분석 결과를 기반으로 소프트웨어를 개발한다는측면에서 소모전력 감소를 위한 하나의 중요한 전략으로 인식되어 오고 있다. 따라서 본 논문에서는 소프트웨어의 행위 모델인 UML의 상태기계(State Machine) 다이어그램을 이용하는 소모전력 분석 기법을 제안한다. 제안하는 분석기법은 상태기계 다이어그램을 페트리 넷으로 변환하고, 이의 시뮬레이션을 통해 소모전력을 예측하게 된다.
Abstract
A wide variety of smartphone applications is increasing the usage time of smartphone. Due to the increased time, it becomes difficult to providing stable services to users with limited battery capacity. The past works have been performed the power management of mobile device toward long-lasting battery development or low-power electric devices. However as the complexity of software embedded into system are increased, the research interests of the software power analysis is also increased. Among these studies on the software power analysis, model-based analysis technique is one of major interests because it can be able to analyze the power consumption before the development of source codes, then the analysis result can be used in the development of the software system, This paper suggests a model-based power analysis technique using UML state machine diagram. Our proposed technique estimates the power consumption by the simulation of Perti-net which is transformed from the state machine diagram.
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