Learning-Based Orchestration for Dynamic Functional Split and Resource Allocation in vRANs

Fahri Wisnu Murti, Samad Ali, George Iosifidis, Matti Latva-aho

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

11 Downloads (Pure)

Abstract

One of the key benefits of virtualized radio access networks (vRANs) is network management flexibility. However, this versatility raises previously-unseen network management challenges. In this paper, a learning-based zero-touch vRAN orchestration framework (LOFV) is proposed to jointly select the functional splits and allocate the virtualized resources to minimize the long-term management cost. First, testbed measurements of the behaviour between the users’ demand and the virtualized resource utilization are collected using a centralized RAN system. The collected data reveals that there are non-linear and non-monotonic relationships between demand and resource utilization. Then, a comprehensive cost model is proposed that takes resource overprovisioning, declined demand, instantiation and reconfiguration into account. Moreover, the proposed cost model also captures different routing and computing costs for each split. Motivated by our measurement insights and cost model, LOFV is developed using a model-free reinforcement learning paradigm. The proposed solution is constructed from a combination of deep Q-learning and a regression-based neural network that maps the network state and users’ demand into split and resource control decisions. Our numerical evaluations show that LOFV can offer cost savings by up to 69% of the optimal static policy and 45% of the optimal fully dynamic policy.
Original languageEnglish
Title of host publicationProceedings of the 2022 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
Place of PublicationDanvers
PublisherIEEE
Pages243-248
Number of pages6
ISBN (Electronic)978-1-6654-9871-5
ISBN (Print)978-1-6654-9872-2
DOIs
Publication statusPublished - 2022
Event 2022 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit) - Grenoble, France
Duration: 7 Jun 202210 Jun 2022

Conference

Conference 2022 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
Country/TerritoryFrance
CityGrenoble
Period7/06/2210/06/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Fingerprint

Dive into the research topics of 'Learning-Based Orchestration for Dynamic Functional Split and Resource Allocation in vRANs'. Together they form a unique fingerprint.

Cite this