On Orchestration Interactions for Preparation of Slice Creation in Multi-domain 5G Networking Environment

摘要

Network slicing is a major concept in 5G networking technology, offering multi-tenant, multi-domain, multi-operator and end-to-end (E2E) capabilities. 5G slicing allows tenants to share resources while customizing their own services via slice isolation. Integrated management and control based on ETSI Management and Orchestration (MANO) is applied, but enriched, in order to cope with multi-domain slicing. Several architectures have been proposed in the literature, with different views on the complex orchestration functions. This paper is oriented to some open architectural issues. It presents a short analysis of the orchestration interactions, focusing to some aspects of initial slice design and preparation, in a multi-domain and multi-operator environment. A specific paper contribution is on inter-domain topology discovery and collection of information by a multi-domain capable slice orchestrator, especially on specifying the design and preparation phase of a slice construction.