WeD3 – Network Slicing

Wednesday, 19 June 2019, 16:00-17:30, Room 3


Session Chair:Oscar Carrasco (Casa Systems, Spain)

Network Slice Instantiation for 5G Micro-Operator Deployment Scenarios

Idris Badmus (Centre for Wireless Commmunications, University of Oulu, Finland); Marja Matinmikko-Blue (University of Oulu, Centre for Wireless Communications, Finland); Jaspreet Singh Walia and Tarik Taleb (Aalto University, Finland)
The concept of network slicing is considered as a key part in the development of 5G. Network slicing is the means to logically isolate network capabilities in order to make each slice responsible for specific network requirement. In the same light, the micro-operator concept has emerged for local deployment of 5G for vertical specific service delivery. Even though micro-operator networks are expected to be deployed using 5G, most research on network slicing has been directed towards the description on the traditional Mobile Network Operator’s (MNO) networks with little emphasis on slicing in local 5G networks deployed by different stakeholders. In order to achieve slicing in a micro-operator network, it is of vital importance to understand the different deployment scenarios that can exist and how slicing can be realized for each of these deployments. In this paper, the micro-operator networks described include closed, open and mixed network, and for each of these network, different deployment scenarios are established. The paper further proposes approaches for the configuration of Network Slice Instances (NSIs) using the Network Slice Subnet Instances (NSSIs) and other Network Functions (NFs) in a micro-operator network while considering the different deployments. The results highlight the possible deployment scenarios that can be established in a micro-operator network and how network slicing can be efficiently realized for the various local deployments.


Towards Closed Loop 5G Service Assurance Architecture for Network Slices as a Service

Min Xie (Telenor Research & Telenor Group, Norway); Wint Yi Poe (Huawei Technologies – European Research Center, Germany); Yue Wang (Samsung Electronics, USA); Andres J Gonzalez (Telenor Research, Norway); Ahmed Mustafa Elmokashfi (Simula Research Laboratory, Norway); Joao Antonio Pereira Rodrigues (Nokia, Portugal); Foivos Michelinakis (Simula Metropolitan, Norway)
5G intends to use network slicing to support multiple vertical industries. The dynamic resource sharing and diverse customer requirements bring new challenges towards service assurance (SA), such as automation and customer-centric. As a response to these challenges, this paper proposes a hierarchical, modular, distributed, and scalable SA architecture. This paper highlights an important key feature SA coordination which is facilitated by three new SA functions, SA interpretation, SA policy management, and data fabric. Three closed-loops are introduced to coordinate and realize automation of service management. Challenges associated with realizing SA are briefly discussed and will be addressed by leveraging the 5G infrastructure developed within the H2020-ICT-17 project 5G-VINNI.


Defining a Communication Service Management Function for 5G Network Slices

Luis Suarez (IRT bcom & Université de Bretagne Occidentale (UBO), France); David Espes (University of Brest & LabSTICC, France); Philippe Le Parc (University of Brest, France); Frédéric Cuppens (IMT Atlantique, France)
Network slicing is an important concept for telecommunication companies for optimizing their infrastructure and providing customized services. In order to deploy them, it is necessary to fully understand the customer requirements. The Communication Service Management Function (CSMF) is an entity that has this task, acting as a gateway to translate these requirements towards the network slicing ecosystem. Even though we know the tasks for the CSMF, we find there is no complete definition of its internal elements and interactions. Our contribution is twofold: (i) we provide a comparison with current implementations and their weaknesses; and (ii) we propose a complete model of the CSMF, its internal structure and its interaction with other elements of the network slicing infrastructure.


Deploying Smart City Components for 5G Network Slicing

Bogdan Rusti (Orange Romania, Romania)
The integration requirements between digital systems acting as enablers for vertical industries services and network layers represents a big challenge for multitenant vertical slice deployment initiatives over 5G infrastructure. Several concepts were developed, among them Smart City 5G-ready application based on cloud-native/microservice principles that proposes a separation between the orchestration of the 5G applications and the network services that support them. In this paper we are presenting the deployment phases of Smart City demonstrator focusing mainly on its first phase which covers the test bed deployment and the on-boarding process of application components. It is an advanced stage in the evolution of the project from the theoretical concept proposal [1], followed by the design and development phase as a collaboration between two 5G-PPP EU projects MATILDA and SliceNet [2] toward its completion as an automated solution for development, deployment and management of a Smart City 5G cloud-native application slice over the virtualized infrastructure. The target is to create and implement an end-to-end operational service framework starting from design and development to end to end orchestration over a 5G infrastructure through a One-Stop API assuring the end-to-end management, control and orchestration of the slice.


Management of Mission Critical Public Safety Applications: The 5G ESSENCE Project

Maria Spada (Wind Tre SpA, Italy); Jordi Pérez-Romero (Universitat Politècnica de Catalunya (UPC), Spain); Vincenzo Riccobene (Intel, Ireland); Aitor Sanchoyerto (University of the Basque Country, Spain); Ruben Solozabal (EHU, Spain); Michail Alexandros Kourtis (NCSR Demokritos, Greece)
To address the limitations of legacy PS solutions, as narrow bandwidth, high deployment cost and poor flexibility, the 5G cellular systems have been proposed. 5G ESSENCE project builds on the reference 5G PPP architecture and enhance it with a cloud-enabled small cell infrastructure, proposing a fully distributed orchestration architecture leveraging multi-access technologies. Furthermore, SDN and NFV are exploited to create flexible slices for dedicated mission critical public safety applications. This is shown by describing as the mission critical push-to-talk and group communications services have been implemented in a real testbed.