GeoBroker：利用地理环境进行IoT数据分发
GeoBroker: Leveraging Geo-Contexts for IoT Data Distribution
摘要：
在物联网中，数据的相关性通常取决于数据生产者和消费者的地理环境。然而，今天的数据分发服务主要关注数据内容，而不是地理环境，这有助于减少许多物联网场景中多余数据的传播。在本文中，我们建议使用与设备相关联的地理上下文信息来控制数据分发。我们定义了什么样的地理环境维度存在，并将我们的定义与相关工作的概念进行比较。此外，我们还设计了GeoBroker，这是一种数据分发服务，它使用事物的位置以及消息和订阅的地理围栏来控制数据分发。通过这种方式，我们实现了新的物联网应用场景，同时还通过仅传递相关消息来提高地理环境重要的场景的整体系统效率。我们评估我们的方法的基础上的概念验证原型和几个实验。
英文摘要：
In the Internet of Things, the relevance of data often depends on the geographic context of data producers and consumers. Today's data distribution services, however, mostly focus on data content and not on geo-context, which could help to reduce the dissemination of excess data in many IoT scenarios. In this paper, we propose to use the geo-context information associated with devices to control data distribution. We define what geo-context dimensions exist and compare our definition with concepts from related work. Furthermore, we designed GeoBroker, a data distribution service that uses the location of things, as well as geofences for messages and subscriptions, to control data distribution. This way, we enable new IoT application scenarios while also increasing overall system efficiency for scenarios where geo-contexts matter by delivering only relevant messages. We evaluate our approach based on a proof-of-concept prototype and several experiments.
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