NetDNA: A middleware for seamless integration of devices, networks, and applications

将移动设备集成到分布式系统需要允许这些设备与远程资源交互并允许远程服务访问设备导出的资源的功能。作为一种应用方案，考虑在家庭中使用技术，使个人能够通过与几个旨在帮助他们完成日常生活任务以及监测和控制他们的医疗条件的技术设备相互作用来照顾自己的健康。作为另一种应用场景，考虑无线传感器网络中需要协作而不是竞争网络资源的组件，以实现诸如监控网桥之类的共同目标。在这两种情况下，我们都面临着一个具有挑战性的环境，其中的应用程序必须设计成灵活、可互操作和可靠的，并且它们必须无缝地协调设备以以所需的可靠性和服务质量来完成所需的任务。这类应用程序有一个独特的特性：它们必须是主动的，即它们将在环境变化时主动影响网络，而不是被动地简单地响应不断变化的环境。使用现有的软件技术创建这样的应用程序是复杂的。

Integrating mobile devices into distributed systems requires functionality that allows these devices to interact with remote resources and allows remote services access the resources that devices export. As an application scenario consider the utilization of technology in homes to enable individuals to take care of their own health simply by interacting with several technological devices designed to assist them in daily living tasks as well as monitor and control their medical conditions. As another application scenario, consider the components in a wireless sensor network that need to cooperate, rather than compete for network resources, to accomplish a common goal such as monitoring a bridge. In both of these scenarios, we have a challenging environment in which applications must be designed to be flexible, interoperable, and dependable and they must seamlessly coordinate the devices to accomplish the required task with the required reliability and quality of service. Such applications have a unique property: they must be proactive in the sense that they would be actively affecting the network when the environment changes, rather than reactive, simply responding to the changing environment. Creating such applications is complex using existing software technologies.