Browsing by Author "Afolabi, Ibrahim"
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- Dynamic Resource Provisioning of a Scalable E2E Network Slicing Orchestration System
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2020-11-01) Afolabi, Ibrahim; Prados Garzon, Johnny; Bagaa, Miloud; Taleb, Tarik; Ameigeiras, PabloNetwork slicing allows different applications and network services to be deployed on virtualized resources running on a common underlying physical infrastructure. Developing a scalable system for the orchestration of end-to-end (E2E) mobile network slices requires careful planning and very reliable algorithms. In this paper, we propose a novel E2E Network Slicing Orchestration System (NSOS) and a Dynamic Auto-Scaling Algorithm (DASA) for it. Our NSOS relies strongly on the foundation of a hierarchical architecture that incorporates dedicated entities per domain to manage every segment of the mobile network from the access, to the transport and core network part for a scalable orchestration of federated network slices. The DASA enables the NSOS to autonomously adapt its resources to changes in the demand for slice orchestration requests (SORs) while enforcing a given mean overall time taken by the NSOS to process any SOR. The proposed DASA includes both proactive and reactive resource provisioning techniques). The proposed resource dimensioning heuristic algorithm of the DASA is based on a queuing model for the NSOS, which consists of an open network of G/G/m queues. Finally, we validate the proper operation and evaluate the performance of our DASA solution for the NSOS by means of system-level simulations. - End-to-end Mobile Network Slicing
Sähkötekniikan korkeakoulu | Master's thesis(2017-08-28) Afolabi, IbrahimWireless networks have gone through several years of evolution until now and will continue to do so in order to cater for the varying needs of its users. These demands are expected to continue to grow even more in the future, both in size and variability. Hence, the 5G technology needs to consider these variabilities in service demands and potential data explosion which could accompany users’ demands at the core of its architecture. For 5G mobile network to handle these foreseen challenges, network slicing \cite{c13} is seen as a potential path to tread as its standardization is progressing. In light of the proposed 5G network architecture and to support and end-to-end mobile network slicing, we implemented radio access network (RAN) slicing over a virtualized evolved Node B (eNodeB) and ensured multiple core network slices could communicate through it successfully. Our results, challenges and further research path are presented in this thesis report. - End-to-end network slicing enabled through network function virtualization
A4 Artikkeli konferenssijulkaisussa(2017-09) Afolabi, Ibrahim; Bagaa, Miloud; Taleb, Tarik; Flinck, HannuWireless networks have gone through several years of evolution until now and will continue to do so in order to cater for the varying needs of users. These demands are expected to grow in the future, both in size and variability. Hence, the 5G technology considers these variabilities in service demands and potential data explosion which could accompany users' demands at the core of its architecture. To enable 5G mobile handle these foreseen challenges, network slicing [24] is seen as a way forward as its standardization is progressing. In light of the proposed 5G network architecture base on network slicing, it is essential to be able to determine the correct virtual machine (VM) flavours in which to host the right type of network function based on the slice service requirements. In order to determine this, we carried out series of experiments involving the deployment of different VM flavours which may be suitable for different slices. - mMTC Deployment over Sliceable Infrastructure: The Megasense Scenario
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2021) Motlagh, Naser Hossein; Afolabi, Ibrahim; Pozza, Matteo; Bagaa, Miloud; Taleb, Tarik; Tarkoma, Sasu; Flinck, HannuMassive Machine Type Communication (mMTC) has long been identified as a major vertical sector and enabler of the industry 4.0 technological evolution that will seamlessly ease the dynamics of machine-to-machine communications while leveraging 5G technology. To advance this concept, we have developed and tested an mMTC network slice called Megasense. Megasense is a complete framework that consists of multiple software modules, which is used for collecting and analyzing air pollution data that emanates from a massive amount of air pollution sensors. Taking advantage of 5G networks, Megasense will significantly benefit from an underlying communication network that is traditionally elastic and can accommodate the on-demand changes in requirements of such a use case. As a result, deploying the sensor nodes over a sliceable 5G system is deemed the most appropriate in satisfying the resource requirements of such a use case scenario. In this light, in order to verify how 5G-ready our Megasense solution is, we deployed it over a network slice that is totally composed of virtual resources. We have also evaluated the impact of the network slicing platform on Megasense in terms of bandwidth and resource utilization. We further tested the performances of the Megasense system and come up with different deployment recommendations based on which the Megasense system would function optimally. - Network Slicing & Softwarization: A Survey on Principles, Enabling Technologies & Solutions
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2018) Afolabi, Ibrahim; Taleb, Tarik; Samdanis, Konstantinos; Ksentini, Adlen; Flinck, HannuNetwork slicing has been identified as the backbone of the rapidly evolving 5G technology. However, as its consolidation and standardization progress, there are no literatures that comprehensively discuss its key principles, enablers and research challenges. This paper elaborates network slicing from an end-to-end perspective detailing its historical heritage, principal concepts, enabling technologies and solutions as well as the current standardization efforts. In particular, it overviews the diverse use cases and network requirements of network slicing, the pre-slicing era, considering RAN sharing as well as the end-to-end orchestration and management, encompassing the radio access, transport network and the core network. This paper also provides details of specific slicing solutions for each part of the 5G system. Finally, this paper identifies a number of open research challenges and provides recommendations towards potential solutions. - Network Slicing-Based Customization of 5G Mobile Services
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2019-09-01) Afolabi, Ibrahim; Taleb, Tarik; Frangoudis, Pantelis A.; Bagaa, Miloud; Ksentini, AdlenThrough network slicing, different requirements of different applications and services can be met. These requirements can be in terms of latency, bandwidth, mobility support, defining service area, and security. Through fine and dynamic tuning of network slices, services can have their delivery platforms constantly customized according to their changing needs. In this article, we present our implementation of an E2E network slice orchestration platform, evaluate its performance in terms of dynamic deployment of network slices in an E2E fashion, and discuss how its functionality can be enhanced to better customize the network slices according to the needs of their respective services. - On multi-domain network slicing orchestration architecture and federated resource control
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2019-09-01) Taleb, Tarik; Afolabi, Ibrahim; Samdanis, Konstantinos; Yousaf, Faqir ZarrarA sophisticated and efficient network slicing architecture is needed to support the orchestration of network slices across multiple administrative domains. Such multi-domain architecture shall be agnostic of the underlying virtualization and network infrastructure technologies. Its objective is to extend the traditional orchestration, management and control capabilities by means of models and constructs in order to form a well-stitched composition of network slices. To facilitate such a composition of networking and compute/storage resources, this article introduces a management and orchestration architecture that incorporates Software Defined Networking (SDN) and Network Function Virtualization (NFV) components to the basic 3GPP network slice management. The proposed architecture is broadly divided into four major strata, namely the Multi-domain Service Conductor Stratum, Domain-specific Fully- Fledged Orchestration Stratum, Sub-Domain MANO and Connectivity Stratum, and Logical Multi-domain Slice Instance stratum. Each of these strata is described in detail, providing the fundamental operational specifics for instantiating and managing the resulting federated network slices. - Orchestrating 5G Network Slices to Support Industrial Internet and to Shape Next-Generation Smart Factories
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2019-07) Taleb, Tarik; Afolabi, Ibrahim; Bagaa, MiloudIndustry 4.0 aims at shaking the current manufacturing landscape by leveraging the adoption of smart industrial equipment with increased connectivity, sensing, and actuation capabilities. By exploring access to real-time production information and advanced remote control features, servitization of manufacturing firms promise novel added value services for industrial operators and customers. On the other hand, industrial networks would face a transformation process in order to support the flexibility expected by the next-generation manufacturing processes and enable inter-factory cooperation. In this scenario, 5G systems can play a key role in enabling Industry 4.0 by extending the network slicing paradigm to specifically support the requirements of industrial use cases over heterogeneous domains. We present a novel 5G-based network slicing framework that aims at accommodating the requirements of Industry 4.0. To interconnect different industrial sites up to the extreme edge, different slices of logical resources can be instantiated on-demand to provide the required end-to-end connectivity and processing features. We validate our proposed framework in three realistic use cases that enabled us to highlight the envisioned benefits for industrial stakeholders. - Toward a Real Deployment of Network Services Orchestration and Configuration Convergence Framework for 5G Network Slices
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2021-03) Afolabi, Ibrahim; Bagaa, Miloud; Boumezer, Walid; Taleb, TarikA seamless interworking between network function virtualization (NFV) and software defined networking (SDN) to orchestrate network services for the 5G systems is very fundamental for network slice creation. The orchestration of large scale network slices across multiple administrative as well as technological domains with heterogeneous resources and a distributed form of slice management can benefit from harnessing existing NFV orchestration (NFVO) solutions. In this regard, this article presents a network service orchestration and configuration convergence framework that is capable of providing a large scale network slicing solution for 5G network operators. Using this framework, 5G network operators can orchestrate and configure network slices directly from their infrastructure and that of credible registered slice providers who have resources for the orchestration of only a subset of the overall network slice. The framework is equipped with mechanisms that allow a distributed form of slice configuration and management. - Towards 5G network slicing over multiple-domains
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2017-11-01) Afolabi, Ibrahim; Ksentini, Adlen; Bagaa, Miloud; Taleb, Tarik; Corici, Marius; Nakao, AkihiroOne of the key objectives of 5G is to evolve the current mobile network architecture from "one-fit-all" design model to a more customized and dynamically scaling one that enables the deployment of parallel systems, tailored to the service requirements on top of a shared infrastructure. Indeed, the envisioned 5G services may require different needs in terms of capacity, latency, bandwidth, reliability and security, which cannot be efficiently sustained by the same network infrastructure. Coming to address these customization challenges, network softwarization expressed through Software Defined Networking (SDN) programmable network infrastructures, Network Function Virtualization (NFV) running network functions as software and cloud computing flexibility paradigms, is seen as a possible panacea to addressing the variations in the network requirements posed by the 5G use cases. This will enable network flexibility and programmability, allow the creation and lifecycle management of virtual network slices tailored to the needs of 5G verticals expressed in the form of Mobile Virtual Network Operators (MVNOs) for automotive, eHealth, massive IoT, massive multimedia broadband. In this vein, this paper introduces a potential 5G architecture that enables the orchestration, instantiation and management of end-to-end network slices over multiple administrative and technological domains. The architecture is described from both the management and the service perspective, underlining the common functionality as well as how the response to the diversified service requirements can be achieved through proper software network components development. - Towards a Service-aware E2E Network Slice Orchestration and Resource Provisioning across Multiple Domains
School of Electrical Engineering | Doctoral dissertation (article-based)(2022) Afolabi, IbrahimThe 5th generation mobile network will rely fundamentally on network slicing to provide the required support to enable different vertical industry use cases, such as Ultra Reliable Low Latency Communication (uRLLC), Enhanced/extreme Mobile BroadBand (e/xMBB) and Massive Machine Type Communication (mMTC). In order to deliver these variant 5G use cases to end users from the same physical infrastructure, slice providers have to ensure the customization and optimization of End-to-end (E2E) mobile network slices to truly reflect the type of services that will be running on them. This dissertation is a compilation of research outcomes from our investigations into the practical implementations of various infrastructures and theoretical architectural designs. We also propose a set of algorithms to support the orchestration of service-aware network slices to enable different 5G and beyond use cases. Network function virtualization and software-defined networking are fundamental enabling principles in network slice orchestration. The orchestration of network slices that cuts across the different technological domains of the mobile network (i.e., RAN, Transport, and Core network) as well as the administrative domains (i.e., different cloud providers, MNO clouds and other private/public clouds) is called E2E network slicing. Orchestrating E2E network slices to deliver different 5G services involves a number of requirements and constraints at different technological domains of the mobile network. Fulfilling these divergent but distinctive network requirements for each slice type while provisioning virtual resources from multiple administrative domains will require a holistic framework and intricate architecture capable of considering all of the possible slicing ramifications and the necessary system support. Traffic isolation, dynamic resource provisioning, and dynamic re/configuration are among the most notable challenges of network slicing. The aim of the studies presented in this dissertation is to make advances towards overcoming the specific challenges of network slicing. These challenges have been approached from the perspectives of a sound theoretical analysis, the implementation of a practical framework, the design and development of novel architecture, and the development of efficient schemes. We started by conducting a comprehensive survey to provide a holistic understanding of the concept of network slicing, its design principles, and enabling technologies. Then, we implemented a framework for the E2E slicing of the mobile network and 5G services. We then proposed a novel architecture for facilitating the orchestration of network slices from multiple administrative domains. Finally, we developed a scheme with an enabling architecture for the dynamic provisioning of virtual resources for slice orchestration systems.