Infrastructure Control and Service Management architecture, initial requirements, and existing frameworks

This document details the Infrastructure Control and Service Management architecture to be implemented in the B5G-OPEN Control, Orchestration and Telemetry System (control plane for short), along with a set of initial requirements, and existing frameworks. The document comprises three main parts, each one containing multiple chapters. The key B5G-OPEN goals and major innovations, as outlined in the proposal, include the design of a network architecture featuring multi-band, optical continuum, integrated access, end-to-end network orchestration and autonomous operations. The first part includes Section 2 which overviews a set of initial requirements and use cases, carefully developed with WP2, and extended to the control plane. Section 3 further develops on the services that the control plane of B5G-OPEN must support, for instance, point-to-point optical connectivity, point-to-multipoint XR connectivity, IP link provisioning, telemetry and optical topology services, etc. In the second part of the document, Section 4 provides a thorough review of existing frameworks in the literature, some of them will participate in the design of the control plane architecture. Examples include an overview of most popular control plane frameworks and network operating systems, different tools for implementing network telemetry systems, main orchestration frameworks and Quality of Transmission (QoT) estimation tools. The third part of the document comprises multiple chapters devoted to the definition of different parts of the control plane architecture. In this sense, Section 5 overviews the major parts of the architecture, including service orchestration and planning, optical-packet integration systems and telemetry and intent-based networking. Section 6 introduces the SDN control of optical multi-band networks, while Section 7 explains the control of different access technologies (PON, LiFi, etc). Section 8 is devoted to the IT and network resource orchestration platform, and Section 9 to the packet-optical integration. Section 10 overviews the architecture of the telemetry system, in charge of monitoring the quality of network connectivity at the optical level and packet flow level. Section 11 overviews the requirements and architecture for autonomous network operations. Next, Section 12 provides further details on the interfaces and systems participating in the whole control plane architecture, described from Section 5 until Section 11. Finally, Section 13 concludes this document with a summary of its main contributions to the B5G-OPEN project and next steps