1 Abstract-Caching content locally at the edge of the network and managing these caches by SDN/NFV based technologies are able to satisfy increasing data traffic demand in 5G. The virtualization of caching functionalities allows network operators to deploy caching services with advanced features like flexibility, dynamicity and auto-scalability, and provide caching services to service providers or virtualized network operators over the same common infrastructure. The caching management system provides two levels of operations: i) at the global level managed by the Infrastructure Provider applying to all the tenants or virtualized network operators; or ii) at the tenant-specific level managed by the specific tenants. Our caching solution opens an entirely new space of business opportunities for network operators, service providers and content providers.
5G networks aims to tackle the complex demands of emerging business paradigms, such as Smart Cities, eHealth, and Industry 4.0. In this paper, a hierarchical, distributed-intelligence 5G architecture is described, offering low latency, security, and open access as features intrinsic to its design. SDN and NFV principles are employed to create a networking solution applicable to a large number of high-specification 5G use case scenarios
CHARISMA aims to tackle low-latency and end-to-end security for converged fixed/wireless 5G networks in order to meet the complex demands of emerging business paradigms, such as Smart Cities, eHealth and Industry 4.0. In this paper, we present the key drivers and requirements towards a hierarchical, distributed-intelligence 5G architecture, supporting low latency, security and open access as features intrinsic to its design. We also investigate the business perspective of the proposed 5G solution and the changes that can be foreseen for the telecom ecosystem
We describe low end-to-end latencies of 6.69 ms in the 5G CHARISMA network, that has been optimised for both device and system technologies speed, as well as with its virtualised, hierarchical and distributed, edgecentric architecture, that processes data as near as possible to their source and destination. Such an ultra-high speed 5G network can be utilised in intelligent transport system (ITS) applications, and we describe a public transport bus-based use case that takes advantage of the CHARISMA capabilities. Keywords: 5G converged network, low latency, mobile edge computing, virtualised security, transportation. 1. INTRODUCTION One of the key drivers pushing forward the development of 5G technologies is the emergence of intelligent transportation systems (ITS) suitable for road and rail applications, which particularly rely on ultra-low latency, high-speed, ultra-high reliable and secure digital connectivity. 5G key performance indicators (KPIs) have been defined [1] targeting 5 ms end-to-end latency times, and 10 ms instantiation times. A key objective of the 5G-PPP CHARISMA [2] project is to create an ultra-low latency 5G technical solution suitable for future ITS applications, and here we report on the latest experimental and architecture embodiment. 2. ULTRA-LOW LATENCY ARCHITECTURE CHARISMA adopts a distributed control, management & orchestration (CMO) architecture, bringing intelligence as close to the edge as possible, to reduce latency times and provide a finer resolution control of the 5G network resources using SDN and NFV capabilities. CHARISMA features a hierarchical architecture, placing intelligence nodes at points where aggregation of access, backhaul and core networks occurs: Converged Aggregation Levels (CALs). Each CAL intelligence node contains an Intelligence Management Unit (IMU) containing computing, storage and networking resources, in which network functions can be deployed by the CMO to maintain efficient and low-latency operation. Virtual network functions (VNFs) can be chosen not to be instantiated at each CAL node of the CHARISMA hierarchy. Fig.1 indicates the Virtualization Plane above the PHY infrastructure layer, where the component elements of the IMU present at each CAL are realised. Each of the IMUs above the CAL2, CAL1, and CAL0 are cloudlets of the overall CHARISMA CMO, such that the CAL3 (central office) does not have to have an IMU cloudlet directly associated with it; rather, CAL3 may be associated with the main cloud infrastructure (e.g. data centre, DC) where the overall "centralised" M&O system
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