Resource orchestration strategies with retrials for latency-sensitive network slicing over distributed telco clouds

Gharbaoui, M.; Martini, Barbara; Cecchetti, G.; Castoldi, P.

Publication:
Resource orchestration strategies with retrials for latency-sensitive network slicing over distributed telco clouds

dc.contributor.author	Gharbaoui, M.
dc.contributor.author	Martini, Barbara
dc.contributor.author	Cecchetti, G.
dc.contributor.author	Castoldi, P.
dc.contributor.funder	European Commission	en
dc.date.accessioned	2022-02-10T11:56:09Z
dc.date.available	2022-02-10T11:56:09Z
dc.date.issued	2021-09-23
dc.description.abstract	The new radio technologies (i.e. 5G and beyond) will allow a new generation of innovative services operated by vertical industries (e.g. robotic cloud, autonomous vehicles, etc.) with more stringent QoS requirements, especially in terms of end-to-end latency. Other technological changes, such as Network Function Virtualization (NFV) and Software-Defined Networking (SDN), will bring unique service capabilities to networks by enabling flexible network slicing that can be tailored to the needs of vertical services. However, effective orchestration strategies need to be put in place to offer latency minimization while also maximizing resource utilization for telco providers to address vertical requirements and increase their revenue. Looking at this objective, this paper addresses a latency-sensitive orchestration problem by proposing different strategies for the coordinated selection of virtual resources (network, computational, and storage resources) in distributed DCs while meeting vertical requirements (e.g., bandwidth demand) for network slicing. Three orchestration strategies are presented to minimize latency or the blocking probability through effective resource utilization. To further reduce the slice request blocking, orchestration strategies also encompass a retrial mechanism applied to rejected slice requests. Regarding latency, two components were considered, namely processing and network latency. An extensive set of simulations was carried out over a wide and composite telco cloud infrastructure in which different types of data centers coexist characterized by a different network location, size, and processing capacity. The results compare the behavior of the strategies in addressing latency minimization and service request fulfillment, also considering the impact of the retrial mechanism.	en
dc.description.sponsorship	This work was supported in part by the Department of Excellence in Robotics and Artificial Intelligence by Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR) to Scuola Superiore Sant’Anna, and in part by the Project 5GROWTH under Agreement 856709.	en
dc.format.extent	17
dc.identifier.bibliographicCitation	Gharbaoui, M., Martini, B., Cecchetti, G. & Castoldi, P. (2021). Resource Orchestration Strategies With Retrials for Latency-Sensitive Network Slicing Over Distributed Telco Clouds. IEEE Access, 9, 132801–132817.	en
dc.identifier.doi	https://doi.org/10.1109/ACCESS.2021.3115173
dc.identifier.issn	2169-3536
dc.identifier.publicationfirstpage	132801
dc.identifier.publicationlastpage	132817
dc.identifier.publicationtitle	IEEE Access	en
dc.identifier.publicationvolume	9
dc.identifier.uri	https://hdl.handle.net/10016/34094
dc.language.iso	eng	en
dc.publisher	IEEE	en
dc.relation.projectID	info:eu-repo/grantAgreement/EC/856709
dc.rights	© The authors, 2021. This work is licensed under a Creative Commons Attribution 4.0 License.	en
dc.rights	Atribución 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/es/	*
dc.subject.eciencia	Telecomunicaciones	es
dc.subject.other	Cloud	en
dc.subject.other	Distributed data centers	en
dc.subject.other	NFV	en
dc.subject.other	Retrial	en
dc.subject.other	SDN	en
dc.subject.other	Virtual network function	en
dc.title	Resource orchestration strategies with retrials for latency-sensitive network slicing over distributed telco clouds	en
dc.type	research article	*
dc.type.hasVersion	VoR	*
dspace.entity.type	Publication