Radio access network virtualization for future mobile carrier networks

Costa‐Pérez, Xavier; Swetina, Joerg; Guo, Tao; Mahindra, Rajesh; Rangarajan, Sampath

doi:10.1109/mcom.2013.6553675

Cited by 252 publications

(173 citation statements)

References 4 publications

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“…In order to point out the main differences between traditional Het-Nets and the proposed model for Virtual RANs and to explain the functionalities of the involved parties in the RRM model, a software-based hierarchical network architecture is shown in Figure 1, which is a conceptual architecture consistent with the suggested 3GPP business model for wholesaleonly network sharing, in which Infrastructure Providers (InPs) do not offer service to end users, rather selling capacity to businesses that do not own the infrastructure [14] (details on physical implementations as well as on different interface protocol features can be found in [21]). The service connectivity request in typical Het-Nets is directed to CRRM, as the usual entity for network management, and processed centrally to be assigned to a suitable RAT according to a decision criterion.…”

Section: Network Architecture and Main Assumptionsmentioning

confidence: 99%

“…Among the available mechanisms, proportional fairness has proved to be an effective approach when the objective is to maximise the average long-term users' data rate [12,13]. In this regard, it is suggested that, by employing a logarithmic utility function in the slice scheduler of Virtual RAN, an effective mechanism of fairness based on the concept of proportional fairness can be achieved among virtual slices [14]. A model of RRM is proposed in [15] for 5G wireless infrastructures, which aggregates users' traffic across a Wi-Fi/LTE network, by considering an -fair mechanism in the objective function, including proportional fairness as its special case; however, there is no effort to address the specifications of different services.…”

Section: Introductionmentioning

confidence: 99%

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A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Rouzbehani

Correia

Caeiro

2018

Wireless Communications and Mobile Computing

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Virtualisation, as a key role player of future mobile communications, promotes the idea of service-oriented architectures. This paper proposes a model of Radio Resource Management (RRM) for emerging Virtual Radio Access Networks, based on the interaction between two separated management entities: Common-RRM (CRRM) to coordinate the radio resources among the Radio Access Technologies (RATs) and a centralised virtualisation platform on top of it, called Virtual-RRM (VRRM), which is responsible for service orchestration among Virtual Network Operators, enabling the definition of various services and policies, separately from vendors and underlying RATs. The main objective of VRRM is to satisfy the Service Level Agreements associated with different service classes to the highest possible level, within the framework of proportional fairness. On the other hand, CRRM is in charge of mapping the demanded capacity of each service onto the most suitable RATs. The model is further extended to deal with extreme situations of resource shortage, resulting from high traffic loads, by introducing delay to lower priority services. The performance of the proposed model is evaluated in a practical multi-RAT scenario. Results confirm that the isolation of service classes is consistent with the introduced serving weights, while all the demanded capacities from different services are responded by the most suitable RATs. Finally, independent of the variation of traffic load, 100% of the aggregated capacity is used.

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Section: Network Architecture and Main Assumptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Rouzbehani

Correia

Caeiro

2018

Wireless Communications and Mobile Computing

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“…Resource sharing in RAN 1) Static sharing based on fixed contractual sharing agreements [6] 1) Enable feedback on spectrum usage from basestations and user equipment towards control layer 2) Dynamic sharing [7]: software defined RANs like SoftRAN [8] and CloudRAN [5] 2) Ensuring that the delay caused by this feedback and the response to it is not significant Slice isolation and security NGMN recommendations [9] on security tackle the main issues by adding several levels of isolation between slices Translate these recommendations into design patterns for slices in a multi-slice environment…”

Section: Access Networkmentioning

confidence: 99%

Demystifying network slicing: From theory to practice

Soenen

Banerjee

Tavernier

et al. 2017

2017 IFIP/IEEE Symposium on Integrated Network and Service Management (IM)

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Abstract-Network slicing is the emerging paradigm in which operators use their resources to provide multiple logical networks and associated resources, with varying configurations and at the same time. More and more vertical industries need their machines and devices connected in networks with specific requirements. In order to provide networks fitted to these usecases, and not require that they adapt to the one-size-fits-all network as is currently the case with the mobile Internet, the telecom community vowed to include network slicing functionality within its next generation of mobile networking, 5G, as an end-to-end network solution. As the concept is new and still not fully grasped, we develop and refine the concept of a network slice both from a business and a technological point of view. We investigate how network slicing in the context of a vehicular network could be implemented and how it advances the state of the art. This involves a detailed study of the involved technologies across a range of infrastructures and network segments, as well as the resulting gaps in the existing technology landscape. Based on the lessons learned in this concrete usecase, network slicing is considered in a broader 5G landscape. We capture the main challenges and potential directions in order to make network slicing a true enabler of 5G-driven vertical industries.

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“…Actors in the European telecom scene are at a major turning point, that is: mobile network traffic is rising and subscribers' revenue is declining [39]. In this context, 5G ESSENCE will explore the means to deliver its achievements to the market, with emphasis in the quantification of benefits, especially in terms of total cost of ownership, revenues and profits.…”

Section: Fig 5 the 5g Essence High-level Architecturementioning

confidence: 99%

A Novel Architectural Concept for Enhanced 5G Network Facilities

et al. 2017

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Abstract. The 5G ESSENCE project's context is based on the concept of Edge Cloud Computing and Small Cell-as-a-Service (SCaaS) -as both have been previously identified in the SESAME 5G-PPP project of phase 1-and further "promotes" their role and/or influences within the related 5G vertical markets. 5G ESSENCE's core innovation is focused upon the development/provision of a highly flexible and scalable platform, offering benefits to the involved market actors. The present work identifies a variety of challenges to be fulfilled by the 5G ESSENCE, in the scope of an enhanced architectural framework. The proposed technical approach exploits the profits of the centralization of Small Cell functions as scale grows through an edge cloud environment, based on a two-tier architecture with the first distributed tier being for offering low latency services and the second centralized tier being for the provision of high processing power for computing-intensive network applications. This permits decoupling the control and user planes of the Radio Access Network (RAN) and achieving the advantages of Cloud-RAN without the enormous fronthaul latency restrictions. The use of end-to-end network slicing mechanisms allows for sharing the related infrastructure among multiple operators/vertical industries and customizing its capabilities on a per-tenant basis, creating a neutral host market and reducing operational costs.

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Radio access network virtualization for future mobile carrier networks

Cited by 252 publications

References 4 publications

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

A Service-Oriented Approach for Radio Resource Management in Virtual RANs

Demystifying network slicing: From theory to practice

A Novel Architectural Concept for Enhanced 5G Network Facilities

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