NET3 – Network slicing management

Wednesday, 20 June 2018, 11:00-12:30, E2 hall
Session chairPanagiotis Demestichas (University of Piraeus, Greece)


11:00 – 5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures

Sevil Dräxler, Holger Karl and Hadi Razzaghi Kouchaksaraei (Paderborn University, Germany); Azahar Machwe and Crispin Dent-Young (Zeetta, United Kingdom (Great Britain)); Kostas Katsalis (HUAWEI, Germany & University of Thessaly, Greece); Konstantinos Samdanis (Huawei, Germany)
A heterogeneous 5G infrastructure includes physical and virtual computation, storage, and networking resources, exploiting different technologies and spanning across several administrative domains. These resources can be combined into end-to-end slices that can host different services. Services consist of virtual or physical elements and have different requirements, e.g., in terms of resource demands, latency, performance guarantees. The underlying resources need to be efficiently allocated to the slices and their corresponding services. To abstract away the complexities of the underlying 5G infrastructure and to provide the common functionalities required for efficient and flexible service and slice management and orchestration, we propose 5G Operating System (5G OS). We describe the requirements of such a system, present the high-level architecture of 5G OS, and describe the design challenges for different interfaces within 5G OS. Our proposed architecture includes scalable hierarchies of multi-domain and domain-specific slice and service orchestrators, software-defined network controllers, and network function virtualization management and orchestration frameworks.



11:18 – Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments

Manuel Peuster (Paderborn University, Germany); Michael Marchetti (Sandvine, Canada); Gerardo García de Blas (Telefónica I+D, Spain); Holger Karl (Paderborn University, Germany)
Management and orchestration (MANO) systems are the key components of future large-scale NFV environments. They will manage resources of hundreds or even thousands of NFV infrastructure installations, so called points of presence (PoP). Such scenarios need to be automatically tested during the development phase of a MANO system. This task becomes very challenging because large-scale NFV testbeds are hard to maintain, too expensive, or simply not available. In this paper, we present a multi-PoP NFV infrastructure emulation platform that enables automated, large-scale testing of MANO stacks. We show that our platform can easily emulate hundreds of PoPs on a single physical machine and reduces the setup time of a test PoP by a factor of 232x compared to a DevStack-based test PoP installation. Further, we present a case study in which we test ETSI’s Open Source MANO (OSM) against our proposed system to gain insights about OSM’s behaviour in large-scale NFV deployments.



11:36 – The Vertical Slicer: Verticals’ Entry Point to 5G Networks

Claudio E. Casetti and Carla Fabiana Chiasserini (Politecnico di Torino, Italy); Thomas Deiss (Nokia, Germany); Jose Enrique González Blázquez (ATOS, Spain); Giada Landi (Nextworks, Italy); Josep Mangues-Bafalluy (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Spain); Jorge Martín-Pérez and Nuria Molner (IMDEA Networks Institute & Universidad Carlos III de Madrid, Spain); Cao-Thanh Phan (BCOM, France); Farouk Messaoudi (bcom Institute of Research and Technology, France); Nicolás Serrano (Telefónica I+D, Spain); Charles Turyagyenda (InterDigital, United Kingdom (Great Britain))
Network slicing is the emerging framework for the support of services offered by vertical industries in 5G networks. In order to ensure that the service characteristics required by a vertical are met, it is of paramount importance to adequately interpret the vertical’s requirements and map them onto specifications that the system orchestrator can use to deploy the service. In this paper, we take this challenge and present a new entity, called Vertical Slicer, to be incorporated within the OSS/BSS of 5G networks. We describe the architecture of the Vertical Slicer, as well as its main functional blocks and the algorithms therein.



11:54 – Transactional Network Updates in SDN

Maja Curic (Huawei Technologies Duesseldorf GmbH & Technische Universität München, Germany); Zoran Despotovic (Huawei Technologies, Germany); Artur Hecker (Huawei, Germany); Georg Carle (Technische Universität München, Germany)
Software-defined networks (SDN) do not guarantee coherent network operations, when uncoordinated SDN applications concurrently update the network forwarding state. As this problem has not so far received considerable attention, in this paper, we introduce transactional network-wide update support in SDN. We notably design and implement a new SDN service complementing state of the art proposals to achieve atomicity, isolation and durability of network updates in any typical SDN setup. The experiments with our implementation of the ACID service in FloodLight and OpenVSwitch demonstrate the practical feasibility of our proposal and good scalability to dierent network loads and sizes.


12:12 – Cross-domain Network Slicing for Industrial Applications

Vasileios Theodorou and Konstantinos V. Katsaros (Intracom S.A. Telecom Solutions, Greece); Andreas Roos (Deutsche Telekom AG, Germany); Ermin Sakic and Vivek Kulkarni (Siemens AG, Germany)
Building on virtualization and programmability 5G networks aim at the concurrent support of application domains with different functional and/or QoS requirements, both across and within vertical domains. Towards these requirements, network slicing mechanisms allow the management and orchestration of the underlying pool of resources, typically within a single administrative domain. However, in several occasions, verticals are expected to have a large geographical footprint, often crossing the administrative boarders of multiple network domains, placing a subsequent functional requirement for cross-domain orchestration. In this paper we describe our approach on cross-domain slicing operations for the case of Industrial Applications with strict and differentiating QoS requirements, with a particular focus on Wind Power plants. We describe the design of our SDN-based orchestration TRL-7 prototype and further provide a detailed look on our testbed prepared for measurements in a Wind Power plant in Brande, Denmark.