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The overall research infrastructure that was built in the context of SmartFIRE was validated through some real life scenarios that will demonstrate the full potential of the interconnection of European and South Korean testbeds. The scenarios have been designed by taking into account the current trend in research experimentation, which involves large scale intercontinental facilities with distributed resources, prone to communication errors and bottlenecks, where novel and efficient schemes using emerging technologies have to be conceived in order to overcome such barriers in communication.

The architecture and overall efficiency of the platform were verified by means of the following two real life scenarios, based on the current research trends of IoT and Video Streaming applications over various heterogeneous platforms:

  • Identify-based communication: According to this experiment, distributed measurements are gathered by sensors located in UMU and streamed to ETRI. Since sensors are mobile (e.g. portable sensors attached to moving hosts), their identification cannot be based on the IP addressing scheme. As follows, the communication inside the UMU and ETRI domains is achieved with use of Host Identifiers (HID), while IP addresses are used only in the inter-domain area. When a host moves to the range of a new Access Router (AR), the sensors data are forwarded to this AR by the location management function operated by an OpenFlow controller, named Local Controller. Each host is able to start a sensors data streaming service with every host either located in UMU or ETRI, where the sensors data can be forwarded constantly and seamlessly. This service is orchestrated by another OpenFlow controller, named Global Controller.
  • Content-based communication: In this scenario, a content-based architecture is utilized, that is implemented using SDN technology (leveraging OpenFlow resources) on top of the UTH and SNU testbeds. The utilized resources are interconnected including Layer 2 intercontinental virtual links, based on the GEANT-GLORIAD-KREONET services. Wireless devices laying on UTH testbed will be connected to a Content-based network on SNU, where the IP addressing scheme will be replaced by a novel one based on content identifiers. The goal of this innovation is to use identifiers that specify only the content and not the location of this content, as the IP addresses do. Each content is placed on multiple sides on the SNU testbed. The target of the Content-based architecture is the forwarding of the content from the most appropriate side to the requesting wireless device, while the streaming over the UTH wireless mesh is based on a Backpressure routing scheme.