Evolution of Access Network Sharing and its Role in 5G Networks

Afraz, Nima; Slyne, Frank; Gill, Harleen; Ruffini, Marco

doi:10.20944/preprints201909.0165.v2

Cited by 7 publications

(5 citation statements)

References 45 publications

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“…The principles of fixed access network sharing and its enabling technologies have been extensively explored in [48]. For instance, multi-wavelength systems, such as NG-PON2, can provide both high capacity, isolation, and flexibility of operation in shared networks.…”

Section: Network Sharingmentioning

confidence: 99%

“…Conventional telecommunications infrastructure ownership models are being challenged as new market players are rising through the 5G evolution. This evolution involves the need for higher capacity and, therefore, higher network infrastructure investment and, in particular, the access network which provides the last-mile connectivity to the end-users [48]. In the fixed access network domain, PONs are at the core of this ownership evolution, as PON sharing (across services and tenants) is a main enabler of high-density, high-capacity datatransport in 5G networks [118].…”

Section: Distributed Verification Model For Pon Sharing Marketmentioning

confidence: 99%

“…This vision, in addition to many technical and standardization challenges that need to be addressed, demands a new approach to business and ownership models of network infrastructure [48], where automated resource orchestration and provisioning mechanisms handle on-demand resource needs of the operators. The most prominent model of resource alloca-92 5.…”

Section: Distributed 5g Network Slicing Marketplacementioning

confidence: 99%

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Techno-economics of Optical Access Network Sharing

Afraz¹

2021

Preprint

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Several parallel trends, including the growing number of Internet reliant devices/services, increasing Internet penetration rates, and the continuing popularity of bandwidth-hungry multimedia content contribute to the exponential surge of Internet traffic. The combination of these trends could imply a considerable increase in network infrastructure investment for the telecom and broadband operators. In addition, the high cost of initial investment could escalate the market barriers to entry for the innovative service providers incapable of deploying their own network infrastructure. In this dissertation, we explore if and how enabling optical access network sharing could cultivate new network ownership and business models that simultaneously keep the end-user subscription fees low and facilitate the market entry for the smaller service providers. We aim to identify and address the technological and economic barriers of optical access network sharing. The broad scope of this dissertation concerns the inter-operator sharing of optical access networks which connect the end-users to the operators' network in the last-mile. The access segment of the communications network is recognized to be the most costly due to its deployment scale. Therefore, a reduction in cost in the access will have a multi-fold impact on the overall capital expenditure for network deployments. The dissertation focuses in particular on PONs as the most widespread type of optical access networks. The central argument of the present research is that network infrastructure/resource sharing has the potential to reduce the capital and operational expenditure of the network operators. This will allow for more competition as the market entrance cost decreases. We first address the lack of tenant operators' adequate control over the shared resources in a multi-tenant PON as a technological barrier. We provide a solution to strengthen the network operators' control over their share of the network in a multi-tenant PON. This is made possible by allowing the operators to schedule the transmission over the network using tailored algorithms to meet their requirements (e.g., latency and throughput). The dissertation argues that providing a virtual (software) instance of the DBA algorithm as opposed to the inflexible hardware implementation first enables the coexistence of various services on the PON and second, improves the overall utilization of the network capacity. While the virtualization of the DBA removes the technical barrier for the inter-operator resource sharing, it does not come with a natural incentive for the operators to share their resources with competitors. Therefore we tackle the lack of incentive for sharing excess network capacity in PON by providing monetary compensation in return for sharing. We model the multi-tenant optical access network with multiple coexisting operators as a market where they can exchange their excess capacity. We propose a sealed-bid multi-item double auction to enable capacity trading between the network operators. Through mathematical proof and market simulation/visualization, we prove that the proposed auction mechanism meets the essential requirements for an economic robust market mechanism (e.g., incentive compatibility, individual rationality, and budget balance). This provides trusted market conduct in the presence of a central authority (e.g., the public infrastructure provider) that all the operators trust.

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Section: Network Sharingmentioning

confidence: 99%

Section: Distributed Verification Model For Pon Sharing Marketmentioning

confidence: 99%

Section: Distributed 5g Network Slicing Marketplacementioning

confidence: 99%

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Techno-economics of Optical Access Network Sharing

Afraz¹

2021

Preprint

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“…Since then, several techniques have been proposed and deployed to give different operators the ability to access their customers through a third party access network (typically belonging to the main incumbent operator). These spanned from physical link unbundling, where an Other Licensed Operator (OLO) can physically transmit its Digital Subscriber Line (DSL) signal over the copper line linking the end-user to the Central Office (CO), to bitstream services, where the incumbent runs the access network and handles an aggregate of the customers' data to the OLO at a number of national access points [1], [2]. Such techniques have evolved over time and are characterized by a different trade-off between the ability of the OLO to control Quality of Service (QoS) versus the amount of equipment it needs to deploy at the CO.…”

Section: Introductionmentioning

confidence: 99%

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

Ruffini

Ahmad

Zeb

et al. 2020

J. Opt. Commun. Netw.

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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.

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“…VULA and NGA bitstream have tried to provide some level of mitigation, by providing additional QoS differentiation. The work in [1] provides a survey of the evolution of such sharing mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Evolution of access network sharing towards software based passive optical network: can virtual OLTs run at full line rate?

Ruffini¹,

Coyle

Singh

et al. 2020

2020 International Conference on Optical Network Design and Modeling (ONDM)

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This paper summarises how access network sharing has evolved from physical layer unbundling to fully virtualised architectures. We address one of the crucial question in access network virtualisation: whether fully virtualised PONs can run at line rate over general purpose processing units. This paper provides an experimental insight into this query, showing that it is possible to run XGS-PON at line rate, if additional hardware acceleration is provided, e.g., for cryptographic functions.

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Evolution of Access Network Sharing and its Role in 5G Networks

Cited by 7 publications

References 45 publications

Techno-economics of Optical Access Network Sharing

Techno-economics of Optical Access Network Sharing

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

Evolution of access network sharing towards software based passive optical network: can virtual OLTs run at full line rate?

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