Exploiting flexible functional split in converged software defined access networks

Marotta, Andrea; Cassioli, Dajana; Kondepu, Koteswararao; Antonelli, Cristian; Valcarenghi, L.

doi:10.1364/jocn.11.000536

Cited by 29 publications

(11 citation statements)

References 31 publications

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“…In addition, some works have studied the implementation of split selection over optical fiber networks [28]- [32]. For instance, the authors of [31] depict an architecture, called F-RAN, able to dynamically choose the best split selection, based on radio performance and optic transport capacity.…”

Section: Related Workmentioning

confidence: 99%

Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model

Díez

Hervella

Agüero

2021

IEEE Trans. Netw. Serv. Manage.

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We study Flexible Functional Split functionality of 5G vRAN controllers in 5G networks. We propose an innovative model, based on a Markov Chain, which can be used to characterize their performance. We consider both infinite and finite-buffer controllers. In the former, frames would not be lost (provided the system works in a stable regime), and we thus focus on the time frames stay at the controller. For the finite-buffer controller, there might be losses, and we analyze the trade-off between time at the controller (which might hinder the stringent delay requirements of 5G services), and loss probability. Matrix-geometric techniques are used to resolve the corresponding Quasi-Birth-Death process. The validity of the proposed model is assessed by means of an extensive experiment campaign carried out over an ad-hoc eventdriven simulator, which is also used to broaden the analysis, considering different service rate distributions, as well as the variability of the studied performance indicators. The results show that the proposed model can be effectively exploited to tackle the dimensioning of these systems, as it sheds light on how their configuration impacts the expected delay and loss rate.

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Section: Related Workmentioning

confidence: 99%

Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model

Díez

Hervella

Agüero

2021

IEEE Trans. Netw. Serv. Manage.

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“…Traditionally, forecasting techniques resorted to time series methods, such as Error, Trend, Seasonality (ETS), Auto Regressive Integrated Moving Average (ARIMA) [4], and Triple Exponential Smoothing (TES) (i.e., Holt-Winters) [3]. These methods usually require a limited number of computational resources and low-energy because they are mainly based on simple analytical formulas [5].…”

Section: A Forecasting Techniquesmentioning

confidence: 99%

Dimensioning of V2X Services in 5G Networks through Forecast-based Scaling

Martín-Pérez,

Kondepu,

De Vleeschauwer

et al. 2021

Preprint

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With the increasing adoption of intelligent transportation systems and the upcoming era of autonomous vehicles, vehicular services (such as, remote driving, cooperative awareness, and hazard warning) will face an ever changing and dynamic environment. Traffic flows on the roads is a critical condition for these services and, therefore, it is of paramount importance to forecast how they will evolve over time. By knowing future events (such as, traffic jams), vehicular services can be dimensioned in an on-demand fashion in order to minimize Service Level Agreements (SLAs) violations, thus reducing the chances of car accidents. This research departs from an evaluation of traditional time-series techniques with recent Machine Learning (ML)-based solutions to forecast traffic flows in the roads of Torino (Italy). Given the accuracy of the selected forecasting techniques, a forecast-based scaling algorithm is proposed and evaluated over a set of dimensioning experiments of three distinct vehicular services with strict latency requirements. Results show that the proposed scaling algorithm enables resource savings of up to a 5% at the cost of incurring in an increase of less than 0.4% of latency violations.

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“…For software-defined optical networks (SDON) subdomain access, the networks provide an overview of the access network challenges that SDN can address [23] and comprehensively survey studies that examine the SDN paradigm in optical networks are described as [32]. Furthermore, the adaptive flexible functional split of 5G networks and the resource availability in the optical access network and the accurate forecasting of the available bandwidth of the real-time functional split techniques are studied [33]. The author H. Yang et al [34] investigate the software-defined ubiquitous datacenter optical interconnection (SUDOI) architecture and operations.…”

Section: Related Workmentioning

confidence: 99%

5G-Enabled Tactile Internet Resource Provision via Software-Defined Optical Access Networks (SDOANs)

et al. 2021

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Emerging research trends in smart healthcare, smart manufacturing, and Industrial Internet-of-Things (IIoT) applications are based on 5G services, which can achieve ultra-reliable and low-latency communication networks. In such fields of application, haptic applications have gained importance. The invention of 5G wireless communication networks and advances in Tactile Internet (TI) technology, which provides controlled communications through the transmission of touch and actuation in real-time, have been envisioned as promising enablers of TI services. This study introduces TI-based smart hospital healthcare applications to enhance the alignment of services provided to patients. The existing telesurgery system has high communication delay and overhead, which limit its applicability. To alleviate these problems, we analyze and provide insights into the communication architecture for 5G-enabled low-latency telesurgery in a smart hospital. We then propose a new TI-software-defined optical access networking (TI-SDOANs) framework in Next-Generation Passive Optical Network 2, which includes cloud-based human-to-machine steering servers and supports multiple cloud-based applications. We further propose the implementation of an effective TI-dynamic wavelength and bandwidth allocation (TI-DWBA) resource provisioning scheme that meets the quality of service requirements of TI services. Simulation results show that the proposed scheduling schemes can significantly improve the Quality of Service (QoS) performance in terms of the packet delay, jitter, throughput and packet drop.

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Exploiting flexible functional split in converged software defined access networks

Cited by 29 publications

References 31 publications

Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model

Understanding the Performance of Flexible Functional Split in 5G vRAN Controllers: A Markov Chain-Based Model

Dimensioning of V2X Services in 5G Networks through Forecast-based Scaling

5G-Enabled Tactile Internet Resource Provision via Software-Defined Optical Access Networks (SDOANs)

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