Energy savings in heterogeneous networks with clustered small cell deployments

Ternon, Emmanuel; Agyapong, Patrick; Hu, Liang; Dekorsy, Armin

doi:10.1109/iswcs.2014.6933333

Cited by 19 publications

(10 citation statements)

References 5 publications

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“…The authors in [8] investigate how different BS and antenna deployment strategies, for both indoor and outdoor UDNs, can impact EE. In [9], a power control and UE scheduling mechanism is proposed for UDN of clustered small cells which have access to a database consisting signal-to-noise ratio values of each BS-UE link. The work in [10] proposes an optimization framework which allows flexible UE association among densely deployed BSs by minimizing the signaling overhead.…”

mentioning

confidence: 99%

Ultra Dense Small Cell Networks: Turning Density Into Energy Efficiency

Samarakoon

Bennis

Saad

et al. 2016

IEEE J. Select. Areas Commun.

158

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In this paper, a novel approach for joint power control and user scheduling is proposed for optimizing energy efficiency (EE), in terms of bits per unit energy, in ultra dense small cell networks (UDNs). Due to severe coupling in interference, this problem is formulated as a dynamic stochastic game (DSG) between small cell base stations (SBSs). This game enables to capture the dynamics of both the queues and channel states of the system. To solve this game, assuming a large homogeneous UDN deployment, the problem is cast as a mean-field game (MFG) in which the MFG equilibrium is analyzed with the aid of lowcomplexity tractable partial differential equations. Exploiting the stochastic nature of the problem, user scheduling is formulated as a stochastic optimization problem and solved using the drift plus penalty (DPP) approach in the framework of Lyapunov optimization. Remarkably, it is shown that by weaving notions from Lyapunov optimization and mean-field theory, the proposed solution yields an equilibrium control policy per SBS which maximizes the network utility while ensuring users' qualityof-service. Simulation results show that the proposed approach achieves up to 70.7% gains in EE and 99.5% reductions in the network's outage probabilities compared to a baseline model which focuses on improving EE while attempting to satisfy the users' instantaneous quality-of-service requirements.

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mentioning

confidence: 99%

Ultra Dense Small Cell Networks: Turning Density Into Energy Efficiency

Samarakoon

Bennis

Saad

et al. 2016

IEEE J. Select. Areas Commun.

158

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“…The preliminary models in [92] and [93] exploit position information and measurement history to predict channel quality of switched off DBSs. This opens a research direction towards developing efficient, selforganising techniques for gathering and maintaining the contextual information as well as analysing the fingerprints' accuracy/overhead trade-off [116].…”

Section: Conclusion and Future Research Directionsmentioning

confidence: 99%

Control-Data Separation Architecture for Cellular Radio Access Networks: A Survey and Outlook

Mohamed

Onireti

Imran

et al. 2016

IEEE Commun. Surv. Tutorials

125

112

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Abstract-Conventional cellular systems are designed to ensure ubiquitous coverage with an always present wireless channel irrespective of the spatial and temporal demand of service. This approach raises several problems due to the tight coupling between network and data access points, as well as the paradigm shift towards data-oriented services, heterogeneous deployments and network densification. A logical separation between control and data planes is seen as a promising solution that could overcome these issues, by providing data services under the umbrella of a coverage layer. This article presents a holistic survey of existing literature on the control-data separation architecture (CDSA) for cellular radio access networks. As a starting point, we discuss the fundamentals, concept and general structure of the CDSA. Then, we point out limitations of the conventional architecture in futuristic deployment scenarios. In addition, we present and critically discuss the work that has been done to investigate potential benefits of the CDSA, as well as its technical challenges and enabling technologies. Finally, an overview of standardisation proposals related to this research vision is provided.

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“…The authors analyse the energy saving gains obtained by dynamically switching off those nomadic cells with no traffic demand. Similarly, the authors in [14] analyse a database-aided scheme that enables the use of deep sleep modes (i.e., completely switch off the transceiver HW) in clustered small cell deployments (e.g., train stations, shopping malls).…”

Section: Related Workmentioning

confidence: 99%

Design, implementation and experimental validation of a 5G energy-aware reconfigurable hotspot

Font-Bach

Bartzoudis

Miozzo

et al. 2018

Computer Communications

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Flexibility and energy efficiency are considered two principal requirements of future fifth generation (5G) systems. From an architectural point of view, centralized processing and a dense deployment of small cells will play a vital role in enabling the efficient and dynamic operation of 5G networks. In this context, reconfigurable hotspots will provide on-demand services and adapt their operation in accordance to traffic requirements, constituting a vital element of the heterogeneous 5G network infrastructure. In this paper we present a reconfigurable hotspot which is able to flexibly distribute its underlying communication functions across the network, as well as to adapt various parameters affecting the generation of the transmitted signal. The reconfiguration of the hotspot focuses

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Energy savings in heterogeneous networks with clustered small cell deployments

Cited by 19 publications

References 5 publications

Ultra Dense Small Cell Networks: Turning Density Into Energy Efficiency

Ultra Dense Small Cell Networks: Turning Density Into Energy Efficiency

Control-Data Separation Architecture for Cellular Radio Access Networks: A Survey and Outlook

Design, implementation and experimental validation of a 5G energy-aware reconfigurable hotspot

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