In this paper, we identify the unique quality of service (QoS) needs of emerging IoT applications and propose SDN-based Application-aware Dynamic Internet of things Quality of service (SADIQ), a software-defined network (SDN) framework that addresses these needs. SADIQ provides location-aware, context-driven QoS for IoT applications by allowing applications to express their requirements using a location-based abstraction and a high-level SQL-like policy language, and the network to support these requirements through recent advances in SDNs. We implement SADIQ using commodity OpenFlow-enabled switches and an open-source SDN controller and evaluate its effectiveness using traces from two real IoT applications. Our results show that SADIQ improves the percentage of regions with error in their reported temperature for the Weather Signal application up to 45×, and improves the percentage of incorrect parking statuses for regions with high occupancy for the Smart Parking application up to 30×, under the same network conditions and drop rates.

中文翻译：

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物联网应用的位置感知，上下文驱动的QoS

在本文中，我们确定了新兴物联网应用程序的独特服务质量（QoS）需求，并提出了基于SDN的基于应用程序的动态物联网服务质量（SADIQ），这是解决这些问题的软件定义网络（SDN）框架需要。SADIQ通过允许应用程序使用基于位置的抽象和类似SQL的高级策略语言来表达其需求，以及通过SDN的最新进展来支持这些需求的网络，从而为IoT应用程序提供了位置感知，上下文驱动的QoS。我们使用启用了OpenFlow的商用交换机和开源SDN控制器来实现SADIQ，并使用来自两个实际IoT应用程序的跟踪来评估其有效性。