Fixed and Mobile Convergence: Which Role for Optical Networks?

Gosselin, Stéphane; Pizzinat, A.; Grall, Xavier; Breuer, D.; Bogenfeld, Eckard; Krauss, Sandro; Gijon, Jose Alfonso Torrijos; Hamidian, Ali; Fonseca, Neiva; Skubic, Björn

doi:10.1364/jocn.7.001075

Cited by 26 publications

(16 citation statements)

References 3 publications

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“…C-RAN backhaul topologies can also be planned considering capacity [23] and energy consumption [24]. Moreover, in scenarios where CAPEX and OPEX can be decreased, the backhaul is planned considering the possibility of sharing links through the usage of already installed metropolitan optical networks and other underused fiber in a city [25]. In this case, our main novelty is to improve reliability and survivability of the network by optimizing link selection according to intrinsic topology properties, instead of optimizing capacity or energy consumption.…”

Section: A Resilience-oriented Approach Using Graph Invariants For C-mentioning

confidence: 99%

“…This example shows how the analysis of node invariants can be used as an incremental and informed method for increasing network resilience in an existing network that does not support disruptive changes. On the other hand, if the goal is to design a new topology from scratch that focuses on resilience, we could fix the original number of nodes (25) and edges (38) and try to minimize the maximum Wiener impact. With this objective function and these constraints in AGX, we were able to find the topology shown in Figure 6b that presents a maximum Wiener impact value of 34 (against the original 181 value of the original topology).…”

Section: From Survivable To Resilient Topologies: a Real-world Networkmentioning

confidence: 99%

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Optimizing C-RAN Backhaul Topologies: A Resilience-Oriented Approach Using Graph Invariants

et al. 2019

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At the verge of the launch of the first commercial fifth generation (5G) system, trends in wireless and optical networks are proceeding toward increasingly dense deployments, supporting resilient interconnection for applications that carry higher and higher capacity and tighter latency requirements. These developments put increasing pressure on network backhaul and drive the need for a re-examination of traditional backhaul topologies. Challenges of impending networks cannot be tackled by star and ring approaches due to their lack of intrinsic survivability and resilience properties, respectively. In support of this re-examination, we propose a backhaul topology design method that formulates the topology optimization as a graph optimization problem by capturing both the objective and constraints of optimization in graph invariants. Our graph theoretic approach leverages well studied mathematical techniques to provide a more systematic alternative to traditional approaches to backhaul design. Specifically, herein, we optimize over some known graph invariants, such as maximum node degree, topology diameter, average distance, and edge betweenness, as well as over a new invariant called node Wiener impact, to achieve baseline backhaul topologies that match the needs for resilient future wireless and optical networks.

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Section: A Resilience-oriented Approach Using Graph Invariants For C-mentioning

confidence: 99%

Section: From Survivable To Resilient Topologies: a Real-world Networkmentioning

confidence: 99%

Optimizing C-RAN Backhaul Topologies: A Resilience-Oriented Approach Using Graph Invariants

et al. 2019

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“…As a result, a global trend can be seen to fiber or hybrid-fiber networks [4]. It is expected that in the future, fiber will be the most relevant cabled data communication network which will also connect 5G networks to the Internet forming so called converged fiber networks [5], [6]. The cost of rolling out a new cabled network should not be underestimated, the cost per home passed ranges from approximately 500 euro (dense urban) up to and above 2000 (rural) [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Joint-Rollout of FTTH and Smart City Fiber Networks as a Way to Reduce Rollout Cost

Spruytte

Vannieuwenborg

Marlein³

et al. 2019

2019 CTTE-FITCE: Smart Cities &Amp; Information and Communication Technology (CTTE-FITCE)

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Making cities smarter is the future. By bringing more technology into existing city infrastructure, smart city applications can arise. Whether these applications track devices e.g. public lightning, environmental measurements e.g. temperature or air quality, or analyze video streams e.g. for people density, it is expected that these will require a (near-) real time data connection. Upcoming 5G networks will be able to handle large amounts of connections at high speeds and low latencies and will therefor outperform current technologies such as 4G and low-power wide-area networks. In order to do so, these 5G networks fall back to numerous fiber connected small cells for up & downlink to the Internet. In this publication, we are looking into the additional fiber equipment and deployment cost to connect the required smart city network infrastructure, taking into account a Fiber-to-the-Home (FTTH) network is already available or will be installed as part of the smart city network rollout. More concretely, we are proposing a methodology comparing an anticipated and incremental planning approach for a number of different extensions upon the FTTH-network: connecting all electrical cabinets, connecting public lightning, and the connection of 5G using small cells. From this, we want to learn how much the total rollout cost can be reduced using a future-oriented smart city approach taking into account all future extensions, compared to an incremental short-time planning only planning additional fiber when required. In the meantime, we want to show the additional cost of creating a smart city network is limited when it is being combined with a FTTH rollout. Results of the proposed methodology and use case will be modeled planning and design software Comsof Fiber and will be published in a future work.

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“…Thereby, the most economically-viable solution is to lower the Total Cost of Ownership (TCO) to keep operator's competiveness. Integrating all 5G, and especially broadband mobile and fixed services is essential and this is referred to as Fixed Mobile Convergence (FMC) [1] [2]. FMC embraces two convergence types: i) unifying their equipment and technologies in the different network segments (i.e., access, aggregation and core) and, ii) integrating the management as well as operations and business systems [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental SDN control solutions for automatic operations and management of 5G services in a fixed mobile converged packet-optical network

Martínez

Requena

Casellas

et al. 2018

2018 International Conference on Optical Network Design and Modeling (ONDM)

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Abstract-5G networks will impose network operators to accommodate services demanding heterogeneous and stringent requirements in terms of increased bandwidth, reduced latency, higher availability, etc. as well as enabling emerging capabilities such as slicing. Operators will be then forced to make notable investments in their infrastructure but the revenue is not envisaged to be proportional. Thereby, operators are seeking for more cost-effective solutions to keep their competitiveness. An appealing solution is to integrate all (broadband) services including both fixed and mobile in a convergent way. This is referred to as Fixed Mobile Convergence (FMC). FMC allows seamlessly serving any kind of access service over the same network infrastructure (access, aggregation and core) and relying on common set of control and operation functions. To this end, FMC leverages the benefits provided by Software Defined Networking (SDN) and Network Function Virtualization (NFV). First, we discuss some of the explored FMC solutions and technologies, from both structural and functional perspectives Next, focusing on a Multi-Layer (Packet and Optical) Aggregation Network, we report two implemented and experimentally validated SDN/NFV orchestration architectures providing feasible FMC to address upcoming 5G challenges.

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Fixed and Mobile Convergence: Which Role for Optical Networks?

Cited by 26 publications

References 3 publications

Optimizing C-RAN Backhaul Topologies: A Resilience-Oriented Approach Using Graph Invariants

Optimizing C-RAN Backhaul Topologies: A Resilience-Oriented Approach Using Graph Invariants

Joint-Rollout of FTTH and Smart City Fiber Networks as a Way to Reduce Rollout Cost

Experimental SDN control solutions for automatic operations and management of 5G services in a fixed mobile converged packet-optical network

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