Abstract: In order to better meet user’s personalized demand and support the context-aware service, this paper proposes an Event-based Context-aware Framework(EBCF). This framework consists of sensor layer, event bus and application service layer. EBCF adopts triggered mechanism based on event to get context information and communicate with users. Besides, rule-based filtering mechanism is discussed to screen invalid event. Application results show that the framework can reduce the burden and improve the aware efficiency of system.

Key words: ubiquitous computing, context-aware, Event-based Context-aware Framework(EBCF), event bus, event-driven, filtering mechanism

摘要： 为更好地满足用户的个性化需求、支持情境感知服务，提出一种基于事件的情境感知框架。该框架包括传感器层、事件总线和应用服务层，采用事件触发的方式调用应用服务与用户交互，并建立基于规则的事件过滤机制，对无效事件进行屏蔽。应用结果表明，该框架可提高系统的感知性能和重用性。

关键词: 普适计算, 情境感知, 基于事件的情境感知框架, 事件总线, 事件驱动, 过滤机制

CLC Number: 

• TP315