一种普适计算环境下自适应中间件  

Self-adaptive Middleware in Ubiquitous Computing Environments

作　　者：贺建立 陈榕[1] 康钦马[2] 

机构地区：[1]同济大学基础软件工程中心,上海200092 [2]同济大学电子信息与工程学院,上海200092

出　　处：《计算机科学》2009年第7期103-106,共4页Computer Science

基　　金：国家"863"计划项目(2001AA113400)资助

摘　　要：普适计算环境固有的内在复杂性对当前的基础软件提出了新的挑战,迫切需要一种具有感知和自适应能力的中间件。提出了一个由接口、框架和情境元模型组成的自适应中间件,给出了在CAR构件平台上的设计与实现。为获取构件信息和对外提供服务,接口元模型支持同步和异步接口。情境元模型在构件对象内建模情境信息,计算实体间以基于异步事件通知方式交互。框架元模型分类和管理构件,随着运行时计算环境的变化动态改变中间件的结构和行为。软件实体感知环境的变化,实体间以松耦合的方式交互,动态改变自身的结构和行为,满足普适计算环境下的动态自适应需求。The inherent complexity of ubiquitous computing poses many new challenges for software infrastructure, which needs urgently the adaptive middleware. This paper proposed a self-adaptive middleware in ubiquitous computing environments,which is composed of the three meta-models,namely the interface,framework and context recta-models. The design and implementation on CAR component platform were presented. The interface meta-model provides access to the services and the internal information and state of a component in terms of asynchronous and synchronous interfaces. The context meta-model represents context information in component object and mask distribution problems in ubiquitous computing environment based asynchronous event notification. The framework meta-model classifies and manages component,makes changes to middleware structures and behaviors according to the changing runtime environments. At last, the software system meets the dynamic self-adaptive requirement in ubiquitous computing environments.

关 键 词：普适计算 自适应中间件 接口元模型 情境元模型 框架元模型 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术] TS103.223[自动化与计算机技术—计算机科学与技术]