Radio Access Network sharing in cellular networks

Mahindra, Rajesh; Khojastepour, Mohammad A.; Zhang, Honghai; Rangarajan, Sampath

doi:10.1109/icnp.2013.6733595

Cited by 79 publications

(62 citation statements)

References 5 publications

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“…Furthermore, as cellular traffic changes from voice-dominated to data-dominated the revenue per bit transferred is decreasing at a fast rate [1]. This motivates designing new mechanisms to save and reduce the operational cost of cellular networks [5], [6]. Among these mechanisms, sharing the network infrastructure is particularly interesting [3], [6] as it allows to statistically multiplex multiple isolated and customized services or operators on the same This work is supported in part by the Smart Applications on Virtual Infrastructure (SAVI) project funded under the National Sciences and Engineering Research Council of Canada (NSERC) Strategic Networks grant number NETGP394424- 10. physical infrastructure which results in better utilization of resources and hence reduced capital and operational expenditure.…”

Section: Introductionmentioning

confidence: 99%

Robust resource reservation in virtual wireless networks

Abbasi¹,

Ghaderi²

2015

2015 IEEE 23rd International Symposium on Quality of Service (IWQoS)

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Abstract-In this paper, we study resource reservation in virtual wireless networks with the aim of minimizing the operational cost. With this regard, the main constraint facing the operator is that only limited information about future traffic demand is typically available to the operator. To address this issue, we investigate reservation policies that are robust to the worstcase traffic demand which fits the available information i.e., the policies that minimize the worst-case expected operational cost.The problem is formulated for several resource reservation options that are commonly offered in practice. For each case, convexity of the problem is discussed and the its dual form is presented as a semidefinite program. While, semidefinite programs can be solved in polynomial time, the optimal closedform reservation policies are obtained for several practical cases. Moreover, the worst-case cost of these policies are analytically compared to the expected cost of the algorithm that has full knowledge of the future demand.The theoretical analysis is supplemented with numerical results to demonstrate the behavior of our algorithms in terms of cost in some example traffic scenarios.

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Section: Introductionmentioning

confidence: 99%

Robust resource reservation in virtual wireless networks

Abbasi¹,

Ghaderi²

2015

2015 IEEE 23rd International Symposium on Quality of Service (IWQoS)

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“…Although the cost items in multi-core network are identical to multi-operator RAN, radio resources pooling leads to further savings in extremely low-traffic areas over equipment-related costs. Moreover, a network-wide radio resource management framework is proposed [16], in order to achieve isolation in addition to the optimal distribution of resources across the network.…”

Section: Background and Related Workmentioning

confidence: 99%

Modelling virtual radio resource management in full heterogeneous networks

Khatibi

Correia

2017

J Wireless Com Network

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Virtual radio access networks (RANs) is the candidate solution for 5G access networks, the concept of virtualised radio resources completing the virtual RAN paradigm. This paper proposes a new analytical model for the management of virtual radio resources in full heterogeneous networks. The estimation of network capacity and data rate allocation are the model's two main components. Based on the probability distribution of the signal-tointerference-plus-noise-ratio observed at the user terminal, the model leads to the probability distribution for the total network data rate. It considers different approaches for the estimation of the total network data rate, based on different channel qualities, i.e., optimistic, realistic and pessimistic. The second component uses the outcome of the first one in order to maximise the weighted data rate subject to the total network capacity, the SLAs (service level agreements) of Virtual Network Operators (VNOs), and fairness. The weights for services in the objective function of the resource allocation component enable the model to have prioritisation among services. The performance of the proposed model is evaluated in a practical heterogeneous access network. Results show an increase of 2.5 times in network capacity by implementing an access point at the centre of each cell of a cellular network. It is shown that the cellular network capacity itself can vary from 0.9 Gbps in the pessimistic approach up to 5.5 Gbps in the optimistic one. Finally, the isolation of service classes and VNOs by means of virtualisation of radio resources is clearly demonstrated.

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“…RAN sharing has also been proposed and practiced in 3GPP systems. The most comprehensive framework is developed by NEC [10], which is based on minimum guaranteed reservation of resources for each operator. In our on-going work, we are developing the idea of opportunistic RAN sharing with our proposed architecture.…”

Section: B Virtualization and Ran Sharingmentioning

confidence: 99%

Future RAN Architecture: SD-RAN Through a General-Purpose Processing Platform

Zaidi

Friderikos

Imran

2015

IEEE Veh. Technol. Mag.

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Abstract-In this article, we identify and study the potential of an integrated deployment solution for energy efficient cellular networks combining the strengths of two very active currently research themes: software defined radio access networks (SD-RAN) and decoupled signaling and data transmissions, or beyond cellular green generation (BCG2) architecture, for enhanced energy efficiency. While SD-RAN envisions a decoupled centralized control plane and data forwarding plane for flexible control, the BCG2 architecture calls for decoupling coverage from capacity and coverage is provided through always-on low-power signaling node for a larger geographical area; capacity is catered by various on-demand data nodes for maximum energy efficiency. In this paper, we identify that a combined approach bringing in both specifications together can, not only achieve greater benefits, but also facilitates the faster realization of both technologies. We propose the idea and design of a signaling controller which acts as a signaling node to provide always-on coverage, consuming low power, and at the same time also hosts the control plane functions for the SD-RAN through a general purpose processing platform. Phantom cell concept is also a similar idea where a normal macro cell provides interference control to densely deployed small cells, although, our initial results show that the integrated architecture has much greater potential of energy savings in comparison to phantom cells.

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Radio Access Network sharing in cellular networks

Cited by 79 publications

References 5 publications

Robust resource reservation in virtual wireless networks

Robust resource reservation in virtual wireless networks

Modelling virtual radio resource management in full heterogeneous networks

Future RAN Architecture: SD-RAN Through a General-Purpose Processing Platform

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