E2E Traffic Engineering Routing for Transport SDN

Iovanna, Paola; Ubaldi, Fabio; Michele, Francesco Di; Giménez, Juan Pedro Fernández-Palacios; López, Vı́ctor

doi:10.1364/ofc.2014.w1k.3

Cited by 11 publications

(4 citation statements)

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“…The best level of resources abstraction in SDN-controlled transport networks is currently subject of extensive research. The work in [5] proposes an abstraction model for a packetover-optical network able to achieve low blocking probability as well as high scalability. The work in [6] proposes and compares three abstraction models for optical networks in terms of maintenance complexity and optimization potential.…”

Section: Entralized Radio Access Network (C-ran)mentioning

confidence: 99%

Transport Abstraction Models for an SDN-Controlled Centralized RAN

et al. 2015

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In a centralized radio access network (C-RAN) scenario the joint coordination of radio (e.g., remote radio units, baseband units) and transport (e.g., optical cross connects) resources can be achieved via software defined networking (SDN) control plane, where a global orchestrator harmonizes the use of resources across all network segments. The more accurate the information about each domain (i.e., the abstraction of wireless and transport resources) is, the better will be the outcome of the orchestration work. This letter presents three transport resources abstraction models along with their corresponding orchestration policies. Their performance are compared showing that there is not a single best abstraction strategy that fits all the cases. If radio resources are scarce compared to transport resources, complex transport abstraction models are not needed. Contrariwise, if enough radio resources are widely available, more detailed abstraction models are required for achieving good network performance, but at the expense of an increased implementation complexity.Index Terms-Software defined networking (SDN), centralized RAN (C-RAN), transport abstraction, fronthaul, backhaul, wavelength division multiplexing (WDM). 1558-2558

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Section: Entralized Radio Access Network (C-ran)mentioning

confidence: 99%

Transport Abstraction Models for an SDN-Controlled Centralized RAN

et al. 2015

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“…Specifically, we study the optimal level of abstraction for optical transport networks, which will play a major role in 5G networks, thanks to their capability of providing high capacity in a cost-and energy-efficient way. Several abstraction models for optical transport networks have been recently proposed [8], [9], [10], [11]. In [8], [9] an abstraction model for optical transport networks is presented which offers low blocking probability for connection requests, while guaranteeing high scalability for the control infrastructure.…”

mentioning

confidence: 99%

“…Several abstraction models for optical transport networks have been recently proposed [8], [9], [10], [11]. In [8], [9] an abstraction model for optical transport networks is presented which offers low blocking probability for connection requests, while guaranteeing high scalability for the control infrastructure. The authors in [10] propose three abstraction models for optical transport networks and compare them in terms of potential for efficient management of network resources and implementation complexity.…”

mentioning

confidence: 99%

Abstraction Models for Optical 5G Transport Networks

Fiorani

Rostami

Wosinska

et al. 2016

J. Opt. Commun. Netw.

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The orchestration of radio, transport, and cloud resources is a key enabler for efficient service delivery in 5G networks. Orchestration can be achieved with a hierarchical software-defined networking (SDN) control architecture in which a global orchestrator operates above the domain controllers. In such an architecture, the abstraction of resources between the controllers and the orchestrator plays a fundamental role for the system performance. In order to reduce the orchestrator complexity, the controllers should hide as much detail as possible from the orchestrator. On the other hand, the more details are available to the orchestrator the more optimal resource orchestration strategy can be obtained. In order to assess this trade-off, we recently proposed two transport abstraction models, namely big switch (BiS) and virtual link (VL), for centralized radio access networks (C-RANs) with orchestration of radio and transport resources. We observed that VL can provide a more efficient resource orchestration than BiS at the expense of an increased implementation complexity. The contribution of this paper is twofold. We extend the BiS and VL models to make them applicable to any orchestration scenario. Then, we propose a new transport abstraction model, referred to as optical transport transformation (OTT), that aims at achieving efficient resource orchestration with a reduced implementation complexity. We compare the performance of these new abstraction models in a C-RAN use case in which backhaul and fronthaul traffic are carried over a dense wavelength division multiplexing (DWDM) network. Our results prove that in a C-RAN the best choice for the transport abstraction model depends on the availability and the reachability of the radio resources. If radio resources are scarce compared to transport resources, complex transport abstraction models are not needed and a BiS abstraction is the best choice. On the other hand, if radio resources are widely available and reachable, an OTT model guarantees the best overall performance.

QC 20160829

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“…Introduction: Transport software-defined networking (T-SDN) aims at satisfying the requirements for scalability, flexibility and reliability of the network of the future [1]. Although T-SDN provides a flexible and programmable networking platform with the control plane detached from the data plane (which leaves the management intelligence in a centralised controller) [2], its impact on power consumption cannot be neglected on equipment implementation.…”

mentioning

confidence: 99%