The overall work to be conducted as part of SESAME has been organised in eight WPs. Project Coordination activities have been concentrated into a separate workpackage, WP1 (Project Management, Risk & Quality Management and Technical Coordination), which will run throughout the entire duration of the project. The dissemination and communication, and exploitation activities also constitute a distinct workpackage, WP8 (Dissemination, Standardisation, Exploitation and Training Activities), which will also be active throughout the project. It can be assumed that WP1 and WP8 run in parallel and interact with the technical activities at every stage of the project.
The categorisation of the work into WPs follows the natural progress of the project. The first phase will be a requirements analysis, use case definition, high-level and detailed specifications, technical characteristics of the system, as well as Proof-of-Concept integration inputs preparation. This work is concentrated in WP2 (Requirements, Specifications and Architecture). Following the definition and specification phase, the implementation of SESAME components architecture is carried out in four workpackages running in parallel. WP3 (Small Cell Design and Implementation) and WP4 (Light DC-Data Center Design and Implementation) are dedicated in prototyping and implementing the CESC (Cloud Enabled Small Cell Management) main components. WP5 (Infrastructure Virtualisation and Management) studies virtualisation strategies and develops the management plane components, including CESC Abstraction Model and VIM (Virtual Infrastructure Manager ) implementation. WP6 (Orchestration and Service Level Management) realises the orchestration components, optimises the VNFs (Virtual Network Function) to be evaluated within SESAME and provides the service management framework. The outputs of WP3, WP4, WP5 and WP6 are integrated, in-lab tested, and validated within WP7 (Integration, Proof o Concept and Evaluation). In WP7, the entire SESAME platform is integrated, deployed and validated as a complete system and also as separate components in the participants’ labs. To that end, the realisation of several use case scenarios is also envisaged as part of WP7.
Work Breakdown Structure (WBS) for the Project.
WP1 - Project Management
In WP1 the overall support for both management and administration of the entire project and for all partners-members of SESAME consortium are provided. The overall objectives of this WP are the implementation of a sound project and financial management plan including reporting to the EC, ensuring delivery of SESAME results on time and within budget, and maintaining a high level of quality of the deliverables.
WP2 - Requirements, Specifications and Architecture
WP2 will define the overall SESAME system architecture, as well as specifications for individual subsystems (i.e., Virtual Small Cell, Light DC, VIM and CESCM). It will also specify the evaluation campaign.
WP3 - Small Cell Design and Implementation
WP3 focuses on the Small Cell devices and the enablers of the CESC concept. The management of the Radio Access Network (RAN) in the CESCM through the combination of CESC Radio Access Manager and the CESC EMS Virtualisation in the CESCM will be one of the key innovations carried out. Also, WP3 will rely on extending the concept of MOCN (Multi-Operator Core Network), hosted in the Light DC as a VNF, to enable RAN sharing amongst different tenants. Hence, WP3 will harness MOCN with virtualisation principles to leverage a novel Small Cell network management paradigm and to allow the CESC provider to monetise the RAN. WP3 will design interfaces and tools that are necessary to manage Small Cells and will provide a prototype design as an output. WP3 will enable features ranging from Local Offload, Edge-Caching, coverage, and network resources provision, up to leveraging new services and applications. Self-X features (self-organizing, self-optimizing, self-healing etc.) of the Small Cells will also be studied within WP3 and they are a key objective of SESAME.
WP4 - Light DC Design and Implementation
The objective of this WP4 is to design and implement a micro scale virtualised execution infrastructure in the form of a Light DC, providing support for edge cloud capabilities. The Light DC will be designed for minimizing space, infrastructure costs and energy consumption. To achieve high performance computing capabilities, combined with big reduction in power consumption and infrastructure cost, the Light DC will heavily rely on heterogeneous parallel architecture based on ARMv8 64-bit processors, GPUs, DSPs, FPGAs, etc. The Light DC HW resources will be implemented with the use of networking and computing virtualization extensions that will be developed so that they can be seamlessly integrated into open source software frameworks, such as Open Platform for NFV (OPNFV). All virtualised resources will be made available through the VIM that will guide the VNF deployment. The combination of the proposed Light DC architecture with NFV and SDN (Software Defined Networking)) will allow achieving an adequate level of flexibility and scalability. The WP4 outcome will be the HW and SW integration into a working prototype, defined as a set of interconnected servers which can provide high performance, high-density, low-power, low-cost, secure, reliable and scalable resources.
WP5 - Infrastructure Virtualisation and Management
The main objective of WP5 is to provide ways for coherent management of the CESCs, which can be seen as light computational clusters distributed across the network infrastructure. This workpackage will also propose the description model, the placement of virtual functions and resources, the CESCM and the Virtual Infrastructure Manager (VIM). Therefore WP5 will implement both the fundamental Network Functions Virtualization (NFV) and the Cloud computing concepts that will allow the establishment of the virtualised execution environment.
WP6 - Orchestration and Service Level Management
WP6 is responsible for the orchestration of the VNFs, as well as for the different chaining mechanisms and the major service provisioning, monitoring, and execution procedures. WP6 will design and implement the orchestration platform capable of creating, deploying, and managing the network functions required to cope with the corresponding service requirements. Accordingly, WP6 will design and implement the specific service function chaining mechanisms, required to ensure the control and operation of the virtualised Small Cells. Service definition and provisioning workflows (and its automation) will be also investigated. Moreover, SLA (Service Level Agreement) metrics will be specified and integrated within the orchestrator core management functionalities.
WP7 - Integration, PoC and Evaluation
The aim of WP7 is to integrate tightly the multi-tenant Small Cell prototype (developed in WP3) with the Light DC (developed in WP4) and also to demonstrate a full-featured prototype, including both virtual infrastructure management (WP5) and orchestration functionalities (WP6). Additionally, WP7 will validate the concept of the CESC at its entirety and will assess the suitable KPIs, with the help of the involved partners. All use case scenarios will follow the specifications laid out in WP2. Taking as input the assessment of the Small Cell and the Light DC as separate parts, the platform encompassing both these components in combination with the management modules will be evaluated and fine-tuned, in a recursive manner.
WP8 – Dissemination, Communication and Standardization
WP8 will focus on the development and execution of viable plans (that are reviewed and updated regularly) for the SESAME communication, dissemination and exploitation activities, with the aim to achieve high measurable impact of the project results, ultimately leading to successful adoption of the SESAME technological components and innovative features into the 5G Small Cells evolution ecosystem. Towards this direction, the business perspectives of the proposed solution will also be investigated.