Visions Towards 5G: Technical Requirements and Potential Enablers

Gavrilovska, Liljana; Rakovic, Valentin; Atanasovski, Vladimir

doi:10.1007/s11277-015-2632-7

Cited by 64 publications

(35 citation statements)

References 74 publications

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“…It enables the operators a larger capability to leverage the network and the applications that will provide valuable services for end‐users in short‐term period. As a direct result, the hardware provider market has exploded, the software solutions are no more dependent to hardware, and an unprecedented number of new software providers has emerged …”

Section: Nfv and Sdnmentioning

confidence: 99%

“…Two modes are depicted, namely, underlay and overlay. The first ensures the transmission over the same spectrum band as the cellular transmission, while in the second, a part of the spectrum is dedicated . This mechanism helps to reduce the traffic congestion and energy consumption and improves spectral reuse .…”

Section: Introductionmentioning

confidence: 99%

“…The first ensures the transmission over the same spectrum band as the cellular transmission, while in the second, a part of the spectrum is dedicated. 14 This mechanism helps to reduce the traffic congestion and energy consumption and improves spectral reuse. 6 Moreover, recent advances highlight the use of D2D as a cooperative communication scheme wherein a device acts as a relay for cellular communication.…”

Section: Introductionmentioning

confidence: 99%

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CRAN, H‐CRAN, and F‐RAN for 5G systems: Key capabilities and recent advances

Guizani

Hamdi

2017

Int J Network Mgmt

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Summary The world of telecommunication is witnessing a swift metamorphosis towards fifth generation cellular networks. Particularly, the rapid shift from a user centric to a device centric communication has created a tremendous impact on service complexity and network requirements. The future networks present requisite needs in ubiquitous throughput, low latency, and high reliability. They are also envisioned to provide energy efficiency, spectrum reuse, network scalability, and robustness as well as improved quality of user experience, which proves to be of ultimate importance. Accordingly, government, academic, and industrial institutions are working together to fulfill these challenging goals. Their research efforts have been extensively reported in various topics and directions, such as heterogeneous small cell networks, millimeter wave communication, massive multiple input multiple output, network function virtualization, software‐defined network, and device‐to‐device communication. More interestingly, a revolutionary network architecture based on cloud computing and centralized processing is adopted as one of the best candidates for fifth generation. It is denoted Cloud Radio Access Network (CRAN) and (H‐CRAN) in heterogeneous networks. An upgraded version, namely, Fog RAN (F‐RAN), with caching and fog computing capabilities is also presented. Environmental friendly, it ensures flexibility and scalability with reduced expenditures. This paper presents the aforementioned key technological functionalities and surveys the benefits and challenges of CRAN, H‐CRAN, and F‐RAN.

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Section: Nfv and Sdnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CRAN, H‐CRAN, and F‐RAN for 5G systems: Key capabilities and recent advances

Guizani

Hamdi

2017

Int J Network Mgmt

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“…Among the three technological solutions that are defined by 5G core network, which has network function virtualization (NFV), SDN and cloud RAN (C-RAN) [9].We adopt the SDN-NFV integration one due to its provision of dynamic, prompt interaction chances and its ability to vary network service mode. The SDN decouples the network control and forwarding functions enabling the network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services.…”

Section: The Sdn-based Integration Scheme Towards Ip Architecturementioning

confidence: 99%

Architecture of LTE-WIFI integration for SDN towards IP systems

Chen¹,

Zhang²,

Gen-yuan³

et al. 2016

IJFGCN

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“…Ever increasing data, mobility, and fairness demands of users have transformed conventional homogeneous cellular networks (HCN) into highly dense HetNets [1,2]. This heterogeneity is expected to be a key feature for improving network performance for forthcoming 5G networks [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A novel and realistic hybrid downlink-uplink coupled/decoupled access scheme for 5G HetNets

Sial¹,

Ahmed²

2017

Turk J Elec Eng & Comp Sci

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Abstract:Cell association in present day heterogeneous networks (HetNets) is still based on the technique used by homogeneous cellular networks despite power and coverage area disparities of network nodes. In ongoing policy, both uplink (UL) and downlink (DL) associations are coupled based on DL characteristics, which introduces UL-DL asymmetry and cell load imbalances. Recently, decoupled cell association, also known as downlink-uplink decoupling (DUDe), has been introduced in 3rd Generation Partnership Project (3GPP) Release 12 to improve uplink performance, load balancing, and cell capacity. In DUDe, characteristics of both DL and UL channels can be considered. By using this concept, various theoretical UL or DL analytical decoupled access models have been proposed without giving their practical realization.In these frameworks, all network users are assumed to use DL-UL decoupled access without considering its practical utility. Existing solutions also ignore noise, which may lead to practical inaccuracies. This paper proposes a novel and realistic hybrid scheme in which coupled or decoupled cell associations can be selected depending upon user location and its advantages. Building upon this innovative approach, it has been established that decoupled access is chosen by few users and accordingly a two-tier analysis framework for these devices has been formulated. Simple closed-form solutions for user performance metrics without ignoring noise have been precisely derived, which relate user performance with HetNet densities. Devised distributions are employed to compare the performance of the decoupled case with the ongoing procedure of coupled access. A practical network design has been proposed, which requires minimum changes to the existing network. Results show that decoupling is viable in the 5G HetNet to achieve fairness, cell load balancing, and performance improvements.

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Visions Towards 5G: Technical Requirements and Potential Enablers

Cited by 64 publications

References 74 publications

CRAN, H‐CRAN, and F‐RAN for 5G systems: Key capabilities and recent advances

CRAN, H‐CRAN, and F‐RAN for 5G systems: Key capabilities and recent advances

Architecture of LTE-WIFI integration for SDN towards IP systems

A novel and realistic hybrid downlink-uplink coupled/decoupled access scheme for 5G HetNets

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