Virtual Radios, Real Services: Enabling RANaaS Through Radio Virtualisation
| Autor: | Maicon Kist, Juergen Rochol, Luiz A. DaSilva, Joao F. Santos |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Radio access network
Service (systems architecture) Computer Networks and Communications business.industry Computer science 020206 networking & telecommunications Hypervisor 02 engineering and technology Virtualization computer.software_genre 0202 electrical engineering electronic engineering information engineering Cellular network Key (cryptography) Resource management Electrical and Electronic Engineering business computer 5G Computer network |
| Zdroj: | IEEE Transactions on Network and Service Management. 17:2610-2619 |
| ISSN: | 2373-7379 |
| DOI: | 10.1109/tnsm.2020.3009863 |
| Popis: | Network slicing is one of the key enabling techniques for 5G, allowing Mobile Network Operators (MNOs) to support services with diverging requirements on top of their physical network infrastructure. The MNOs should be able to offer Network Slices (NSs) as a Service (NSaaS) and provide customisable and independent virtual networks to tenants. In this paper, we address the functionality and challenges for enabling Radio Access Network (RAN) as a Service (RANaaS) through radio virtualisation. We analyse the requirements for using radio hypervisors to support RANaaS, and we evaluate how the current state-of-the-art on radio virtualisation meets such requirements. We identify, formalise and address the key resource management functionality missing from existing radio hypervisors. Then, we present eXtensible Virtualisation Layer (XVL), a software layer that provides the missing resource management functionality for enabling RANaaS and can be added on top of existing radio hypervisors. We integrated XVL with a radio hypervisor, forming a RANaaS platform that can provision heterogeneous RAN slices as a service. We outline XVL’s architecture and design choices, as well as evaluate its performance in terms of the computational overhead, the delay to provision virtual radios, the delay introduced to forward IQ samples, and the signal degradation. Our results show that XVL enables leveraging existing radio hypervisors for supporting the RANaaS paradigm. |
| Databáze: | OpenAIRE |
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