Capacity sharing approaches in multi-tenant, multi-service PONs for low-latency fronthaul applications based on cooperative-DBA (original) (raw)

Virtual Dynamic Bandwidth Allocation Enabling True PON Multi-Tenancy

Optical Fiber Communication Conference, 2017

We propose a virtual-DBA architecture enabling true PON multi-tenancy, giving Virtual Network Operators full control over capacity assignment algorithms. We achieve virtualization enabling efficient capacity sharing without increasing scheduling delay compared to traditional (non-virtualized) PONs.

Frame Level Sharing for DBA virtualization in multi-tenant PONs

2017 International Conference on Optical Network Design and Modeling (ONDM), 2017

The worldwide installation of Fiber-to-the-premises (FTTP) access network solutions is hindered by the high upfront cost of deploying ubiquitous fiber infrastructure. While passive optical networks can provide lower cost compared to point-topoint solutions, their total cost of ownership is still high for most operators to justify a mass scale deployment. Sharing passive optical network (PON) infrastructure has thus been proposed as a solution for network operators to reduce the cost of running FTTP services. In addition, the ability for operators to offer business services (including for example mobile backhaul) in addition to residential services, is crucial to increase the overall PON network revenue. However running services with highly diverse requirements over a physical infrastructure shared among multiple operators (which we now refer to as virtual network operators-VNOs) requires VNOs to have a tight control over PON capacity scheduling. In this paper, we introduce a novel upstream PON capacity sharing algorithm called Frame Level Sharing (FLS). FLS is based on the idea of virtual Dynamic Bandwidth Assignment (vDBA), and allows sharing the upstream frame among multiple VNOs to maximize bandwidth utilization, minimize latency, and provide a high level of service isolation among the VNOs sharing the PON. Our simulation results show that FLS outperforms other benchmark algorithms proposed in the literature.

A hybrid dynamic bandwidth allocation scheme operating with IACG and cooperative DBA for converged fronthaul networks

Optical Fiber Technology, 2023

The time-division multiplexed passive optical network is seen as a candidate for converged fronthaul networks in 5G, which requires low latency and high capacity. In this paper, a hybrid dynamic bandwidth allocation (DBA) scheme for converged fronthaul that combines a status reporting DBA and a cooperative DBA is proposed. Different deployment scenarios and operating conditions in a 10-Gigabit-capable PON (XGS-PON) system are investigated using the OMNeT++ network simulator. The performance of the proposed hybrid DBA is evaluated in terms of average upstream delay and percentage of frame loss meeting a 140 µs queuing delay requirement for fronthaul traffic. Simulation results show a zero-frame loss for fronthaul traffic in all scenarios using the proposed hybrid DBA which is not achievable using only the status reporting DBA, confirming the advantages of the proposed hybrid DBA.

Low-Latency Upstream Scheduling in Multi-Tenant, SLA Compliant TWDM PON

arXiv (Cornell University), 2024

We present a multi-tenant multi-wavelength upstream transmission scheme for virtualised PONs, enabling compliance with latency-oriented Service Level Agreements (SLAs). Our analysis highlights an important trade-off between single-channel vs. multichannel PONs, depending on ONUs tuning time.

The Virtual DBA: Virtualizing Passive Optical Networks to Enable Multi-Service Operation in True Multi-Tenant Environments

Journal of Optical Communications and Networking, 2020

This paper presents the concept of virtual DBA, a method we propose to virtualize upstream capacity scheduling in PONs, which provides multiple independent virtual network operators with the ability to precisely schedule their upstream traffic allocation. After a brief introduction on the evolution of access network sharing, we present our virtual DBA architecture, detailing its main components. We then provide a summary of the work done in this area both from theoretical and practical implementation perspectives. In this paper, we propose a novel stateless algorithm for merging multiple independent virtual bandwidth maps based on priority classes and analyze its performance in terms of efficiency of capacity allocation and latency. Through our results we discuss the existence of a trade-off between traffic load and grant size distribution vs. efficiency and latency. We find that, differently from residential single-tenant application, when PONs are used for low latency and multi-tenant applications, the system has better overall performance if grants are allocated in small size. In addition, our analysis shows that for high priority, strict latency services, our proposed merging algorithm presents delay performance that is independent of the traffic distribution considered.

A Sharing Platform for Multi-Tenant PONs

Journal of Lightwave Technology

In this paper we address the sharing incentive issue in multi-tenant passive optical networks (PONs). We propose an economic-robust and efficient sharing platform for new emerging multi-tenant PON networks. This platform is capable of accommodating a diverse range of service providers and enhancing the network utilization. We propose a sharing platform that provides sharing incentives for the incumbent network operators through monetization of inter-operator network sharing. Meanwhile, the platform allows the incumbent operators to operate a virtual instance of the bandwidth scheduling algorithm which enables them to meet their quality of service and latency requirements. Therefore, the proposed sharing platform grants a high degree of control to the operators cooperating the same network while, thanks to the higher resource efficiency, reduces the initial investment. We first model the multi-tenant PON as a market and define the roles of the virtual network operators (VNOs) and the infrastructure provider (InP) along with their utility functions. We propose a double auction mechanism to facilitate the trading of excess resources. The proposed double auction satisfies the crucial economic properties of a market while it achieves more efficient resource allocation among the market players. We have theoretically proven the economic robustness of the mechanism including incentive compatibility, individual rationality and weak budget balance. Through extensive market simulations, we confirmed that the proposed mechanism achieves superior allocative efficiency compared to a reference baseline mechanism.

Low Latency 5G/LTE Mobile Fronthaul Traffic in Tdmpon/XGS-Pon Networks

2021

Ensuring low latency in a passive optical network (PON) environment for a mobile fronthaul use case is critical and raises a number of challenges. To address those types of challenges, techniques are presented herein that support, among other things, the coordination between a PON scheduler and a Long-Term Evolution (LTE) or Third 10 Anand et al.: LOW LATENCY 5G/LTE MOBILE FRONTHAUL TRAFFIC IN TDMPON/XGS-PON NET

Virtual DBA: virtualizing passive optical networks to enable multi-service operation in true multi-tenant environments

Journal of Optical Communications and Networking, 2020

This paper presents the concept of virtual dynamic bandwidth allocation (DBA), a method we propose to virtualize upstream capacity scheduling in passive optical networks (PONs), which provides multiple independent virtual network operators with the ability to precisely schedule their upstream traffic allocation. After a brief introduction on the evolution of access network sharing, we present our virtual DBA architecture, detailing its main components. We then provide a summary of the work done in this area from both theoretical and practical implementation perspectives. In this paper, we propose a novel stateless algorithm for merging multiple independent virtual bandwidth maps based on priority classes and analyze its performance in terms of efficiency of capacity allocation and latency. Through our results, we discuss the existence of a trade-off between traffic load and grant size distribution versus efficiency and latency. We find that, different from a residential single-tenan...