• Tuesday, 13 June, 16:30-18:00, Room Radisson Blu Kiikeli
• Session Chair: Emilio Calvanese Strinati (CEA-LETI, France)

16:30 Experimental RF-Signal Based Wireless Energy Transmission

Janne Janhunen, Konstantin Mikhaylov and Juha Petäjäjärvi (University of Oulu, Finland)

The distributed measurement and control systems employing wireless connectivity are commonly seen as the key enablers for many novel industry, retail and consumer applications. Even though, the fast spread of large wireless sensor networks today is obstructed by the absence of solutions, which are at the same time dependable, and can minimize both capital and operational expenditures. In this respect the devices, which are powered with the energy collected from their environment, look very attractive. Among all of them, the systems collecting the energy from a designated wireless (i.e., radio frequency (RF)) channel can often enjoy a more stable energy income, which makes them more dependable than their counterparts. Due to this reason, in the current paper we focus on and discuss the key techniques and design aspects enabling development of a real-life RF-powered wireless sensor device. Namely, we address the problems of designing an antenna and the energy harvesting circuit with feasible efficiency. In addition, we detail particular aspects related to the design of a sensor node and optimizing its computing and communication. The developed device is tested in harsh environment as a part of a fast rotating mechanical structure, showing the feasibility of the proposed solutions. The technology discussed in the paper is an important part of the upcoming 5G and IoT development and deployment.

16:48 5G Case Study of Internet of Skills: Slicing the Human Senses

Maria Lema, Konstantinos Antonakoglou, Fragkiskos Sardis, Nantachai Sornkarn, Massimo Condoluci, Toktam Mahmoodi and Mischa Dohler (King's College London, United Kingdom (Great Britain))

5G is all about integrating new industries in the design of this whole new generation, where the mobile broadband connection is not the one and only use case being focused. This article focuses on a practical implementation of a healthcare oriented Internet of Skills application, where the doctor is able to perform remote diagnosis and palpation with the use of cutting edge haptic technology. We present an examination of the main medical socio-economic drivers, as well as the description of specific technologies used in this practical demonstration. All this, with the main objective of delivering a proof of concept for the design and planning of multi-modal communications within 5G.

17:06 An Experimental Investigation of SDN Controller Live Migration in Virtual Data Centers

Sajad Khorsandroo and Ali Saman Tosun (University of Texas at San Antonio, USA)

Virtual data centers (VDCs) are among competitive advantages offered to businesses and enterprises by cloud computing. Through VDCs, organizations can use a pool of on-demand virtual infrastructures in the form of a data center without paying the up-front costs of an actual data center. With the advent of software-defined networks (SDNs), it is now possible to provide the VDC's tenants with an overlay SDN to cover their diverse networking needs. However, live virtual machine (VM) migration, which is a technique in data centers to address issues such as load balancing, imminent server failure, and host maintenance can require parts of or an entire overlay SDN to be migrated to a different host. This introduces challenges which need to be addressed. Otherwise, the services running on the overlay SDNs will get interrupted which may lead to a low quality of end user experience (QoE) as well as a violation of service level agreements (SLAs) by the cloud service providers. Investigating SDN controller live migration in a virtual data center needs a testbed which brings into account cloud, SDN, VM migration, and overlay networks, to name a few. This paper introduces such a testbed and investigates SDN controller live migration in a virtual data center. It identifies container size, traffic volume, traffic pattern and transport layer protocol throughput as contributing factors of a successful SDN controller live migration. It then clarifies how these factors may affect a live migration process in terms of migration time and down time through conducting experiments on a state-of-the-art cloud data center testbed.

17:24 5G E-band Backhaul System Evaluations: Focus on Moving Objects and Outdoor to Indoor Transmission

Zhou Du (Nokia Bell Labs); Eckhard Ohlmer (National Instruments, Germany); Kimmo Aronkytö (Nokia Bell Labs, Finland); Jyri Putkonen and Jouko Kapanen (Nokia Bell Labs); Daniel Daniel Swist (National Instruments, Germany)

It is expected that small cells will carry more than half of the total traffic in 5G, resulting in a huge increase of wireless backhaul traffic. To successfully design and deploy the mmW backhaul system, it is essential to evaluate the performance in different scenarios, also links installed in low human height-level elevations. We report a recent 5G E-band backhaul system measurement campaign focusing on the effects of vehicles passing across and pedestrian walking along the line-of-sight, and outdoor to indoor penetration loss. With the car roofs and humans moving in the same height or a bit lower than the radio LOS, their impact on the radio signal is clearly seen but is not detrimental. By introducing small changes in height, the impact can be reduced from 12 dB to 3.4 dB. The range of penetration losses of modern glass is from 5 dB to 39 dB.

17:42 A Reference Architecture for Federating IoT Infrastructures Supporting Semantic Interoperability

Francois Carrez (University of Surrey, United Kingdom (Great Britain)); David Gómez (Universidad de Cantabria, Spain); Tarek Elsaleh (University of Surrey, United Kingdom (Great Britain)); Luis Sanchez and Jorge Lanza (University of Cantabria, Spain); Paul Grace (IT Innovation & University of Southampton, United Kingdom (Great Britain))

The Internet-of-Things (IoT) is unanimously identified as one of the main pillars of future smart scenarios. However, despite the growing number of IoT deployments, the majority of IoT applications tend to be self-contained, thereby forming vertical silos. Indeed, the ability to combine and synthesize data streams and services from diverse IoT platforms and testbeds, holds the promise to increase the potential of smart applications in terms of size, scope and targeted business context. This paper describes the system architecture for the FIESTA-IoT platform, whose main aim is to federate a large number of testbeds across the planet, in order to offer experimenters the unique experience of dealing with a large number of semantically interoperable data sources. This system architecture was developed by following the Architectural Reference Model (ARM) methodology promoted by the IoT-A project (FP7 "light house" project on Architecture for the Internet of Things). By following this process, the FIESTA-IoT architecture is composed of a set of Views that deal with the "logical" functional decomposition (Functional View - FV) and data structuring and annotation, data flows and inter-functional component interactions (Information View - IV).