无线多媒体感知反应网络广泛应用于人类的生产生活中。有效的信息质量保障是无线多媒体感知反应网络上层服务的重要基础。在传统传感器网络中，信息质量的保障主要通过网络域的数据质量保障机制来体现。对于面向信息服务的无线多媒体感知反应网络，单纯的网络域数据质量保障不足以体现无线多媒体感知反应网络中信息的可用程度。此外，随着信息世界与物理世界融合愈加密切，单向的感知数据无法有效支持多样化的应用需求，我们不仅需要能够感知来自物理世界的环境信息，还希望能够对物理世界产生一定的影响。在感知-反应的双向传输中，多源信息的引入对信息质量保障机制提出了新的挑战。本课题以无线多媒体感知反应网络信息质量保障体系为研究对象，结合网络域与信息域信息质量保障策略，研究适合于无线多媒体感知反应网络特性的信息质量检测、信息质量评估与异常信息处理、信息质量保障验证技术。

Wireless multimedia sensor-actuator networks have been employed extensively in the human life. The effective quality of information (QoI) assurance provides a foundation for various services and applications. In the traditional sensor network, the information quality is often guaranteed by the network relibility. However, for the wireless multimedia sensor-actuator networks with the information service, the network relibility can not represent the usability of the information. the requirement becomes more complex. In addition, in many application, we want not only the samplling and sensing from the physical world, but also performing action to the world. The multi-source information introduces more difficulies for the QoI assurance. In this project, for the wireless multimedia sensor-actuator network, we combine the QoI assurance mechanisms in network and information area, mainly focus on the information quality estimation, error processing scheme and QoI assurance verification.