Flexible Mobile Network Service Chaining in an NFV Environment: IMS Use Case

Seraoui, Youssef; Belmekki, Mostafa; Bellafkih, Mostafa; Raouyane, Brahim

doi:10.1007/978-3-319-91337-7_27

Cited by 2 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this article, we present our contribution in two constituent parts. These two parts represent enhancements of our earlier work published in [13] and [14] respectively. Effectively, the new enhancements do not affect the simulation results made in the previous publications [13,14] and which are also reported in this study, because of the fact that all those enhancements have no relationship with the implemented parts of our approachwe implement part of our eTOM to NFV mapping approach, and then we validate part of our SFC proposal for static signaling service chaining -, except for two improvementsthe inclusion of the Resource Trouble Management (RTM) process and the inclusion of the VNF Manager (VNFM)which were implicitly included in the previous publications and are explicitly included in the current work, as will be shown later.…”

Section: Introductionmentioning

confidence: 66%

“…In effect, compared to our previous publication [14], this second part of our contribution includes five main improvements: First, correlating network slicing and SFC for the delivery of E2E services within 5G in an automated fashion; secondly, enhancing the NFV orchestration layer of the proposed SFC centered mobile network design for the 5G network by splitting it up into two NFV orchestration sublayersa multi-domain NFV Management and Orchestration (MANO) sublayer and a domain-specific NFV MANO sublayer; thirdly, improving the suggested IMS based dynamic and static SFC designs; fourthly, highlighting the role of the VNFM during the simulations in managing the lifecycle of the IMS VNFs composing the signaling service chain allowing for the signaling session establishment conforming to virtualized signaling resource performance thresholds while providing VoD services through the IMS network; and finally, detailing in the Benchmark Results subsection the signaling service chain delivery context, including signaling service chainsone signaling service chain and then two signaling service chains.…”

Section: Introductionmentioning

confidence: 68%

“…As opposed to our previous work [14], this second part of our contribution included five main enhancements. Initially, we correlated network slicing with SFC for the effective automated provision of E2E services within the 5G network.…”

Section: Related Workmentioning

confidence: 99%

“…These interactions between the domainspecific NFV MANO entities and the service chain controller functions are Figure 6. Suggested SFC centered mobile network design for the 5G network [14].…”

Section: Description Of the Solution Relative To Sfcmentioning

confidence: 99%

“…Figure 14. Throughput measurements corresponding to the vI-CSCF1-related virtualized resource (before & after)[13,14].…”

mentioning

confidence: 99%

See 4 more Smart Citations

eTOM to NFV mapping for flexible mobile service chaining in 5G networks: IMS use case

Seraoui

Raouyane

Belmekki

et al. 2020

Heliyon

Self Cite

View full text Add to dashboard Cite

Mobile network operators (MNOs) continually look to improve their business and become more agile and competitive within the quickly developing telecommunications industry. In turn, telecommunication professionals put forward and adapt advanced models and frameworks to assist MNOs to achieve their goals. In this context, the Business Process Framework (eTOM) was established by the TeleManagement Forum and on which we base this work to suggest a mapping of this eTOM business process model upon the network functions virtualization (NFV) framework. Thereby, the main purpose is to design a hybrid architecture by the combination of the aforementioned frameworks for dynamic service delivery with improved resource performance and quality of service so as to fulfill some of the purposes of the 5 generation (5G) technology with regard to a telecommunication system managed and orchestrated in a virtualized environment. Indeed, MNOs will be in a position to scale mobile services up and down fast and reduce costs to better align them with network usage. These procedures are performed based on flexible service chaining through implemented NFV management and orchestration modules along with SDN controller functions. In this article, we outline possible designs and analyses of flexible mobile service chaining to support end-to-end network slicing for dynamic service provisioning in order to provide a novel approach in the framework of the 5G technology, more especially from data and signaling based network perspectives. We project our proposal onto the IP Multimedia Subsystem (IMS) core network to discuss both dynamic and static signaling service provisioning approaches. In this situation, we set up a testbed platform with the goal of assessing the behavior of a virtualized IMS system, in a static signaling service provisioning environment through two signaling service chains to validate part of our proposed approaches. Experiment results confirm that virtualized IMS signaling resource performance indicators could be enhanced in the case of unpredicted performance degradation of one of the virtualized signaling resources assigned to the IMS virtual network functions composing the main signaling service chain by instantiating a second signaling service chain. Finally, IMS application performance indicators are improved regarding registration delay and session setup time.

show abstract