实时嵌入式环境中面向构件系统的QoS模型研究

Research of QoS model for component system in real-time embedded environments

将基于构件技术的开发引入到实时嵌入式软件平台能够很好地适应嵌入式领域多样性的特点,满足对软件开发效率和软件质量的要求。为保证实时嵌入式环境对资源动态变化的需求,考虑到系统资源的全局管理特性,仅从应用中增加QoS适应机制是不够的,还需在现有的构件框架中增加QoS管理机制。为此,提出了一种面向CCM构件系统的QoS模型,能够主动适应动态变化的资源状态,模型中层次式的QoS转换器的设计简化了用户对服务的QoS参数配置。

The introduction of component-based development into real-time embedded platforms is desirable to adapt themselves to the heterogeneity of embedded applications, and it is necessary to satisfy the requirement of software development efficiency. Due to the dynamic resource requesting of real-time embedded platforms and the overall administrative features of system resources, the adaptation mechanism in application level is not the final solution, furthermore the additional QoS managing policy plugged into the current component framework is requisite. Thus, a CCM component-oriented QoS model was proposed, which could adapt itself to the fluctuating component states proactively. At the same time, hierarchy QoS transformer in this QoS Model can simplify the configuration of service QoS parameters greatly.