Energy-Aware Radio Resource Management in D2D-Enabled Multi-Tier HetNets

Naqvi, Syed Ahsan Raza; Pervaiz, Haris; Hassan, Syed Ali; Musavian, Leila; Ni, Qiang; Imran, Muhammad Ali; Ge, Xiaohu; Tafazolli, Rahim

doi:10.1109/access.2018.2817189

Cited by 36 publications

(24 citation statements)

References 32 publications

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“…e results were suboptimal and showed some improvement in EE maximization compared to the algorithms for sum rate maximization and consumed power minimization. A similar study, in [37], for EE maximization with a trade-off between energy efficiency, outage probability, sum rate at different QoS levels and variation of D2D pairs, and cellular users' density was carried out. e energy-aware radio resource management scheme was formulated for optimization of the achievable rate and energy efficiency of cellular users with minimal QoS requirement and maximum input power constraint.…”

Section: Mobile Information Systemsmentioning

confidence: 99%

“…e Lagrangian technique has been applied to determine solutions in mmwave D2D resource optimization problems for energy efficiency [28,36,37], sum rate [29,37], Jain's fairness index [28,29], minimization of transmit power [28], outage probability of D2D users [36,37], and network capacity [41]. However, the computational complexity of the nonlinear optimization techniques will increase due to network densification and mobility which make them unsuitable in future wireless networks which will be characterized by dense users and dense small cells.…”

Section: Nonlinear Optimization Techniquesmentioning

confidence: 99%

“…is network model was also used in [37] but with some modifications such as defining some multiple virtual reality users from the set of cellular users. In [38], a mmwave pico cell with a piconet controller at the center was considered.…”

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confidence: 99%

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Resource Allocation in Millimeter-Wave Device-to-Device Networks

Ombongi

Absaloms

Kibet

2019

Mobile Information Systems

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Recently, the mobile wireless communication has seen explosive growth in data traffic which might not be supported by the current Fourth Generation (4G) networks. The Fifth Generation (5G) networks will overcome this challenge by exploiting a higher spectrum available in millimeter-wave (mmwave) band to improve network throughput. The integration of the millimeter-wave communication with device-to-device communication can be an enabling 5G scheme in providing bandwidth-intensive proximity-based services such as video sharing, live streaming of data, and socially aware networking. Furthermore, the current cellular network traffic can also be offloaded by the D2D user devices thereby reducing loading at Base Stations (BSs), which would then increase the system capacity. However, the mmwave D2D communication is associated with numerous challenges, which include signal blockages, user mobility, high-computational complexity resource allocation algorithms, and increase in interuser interference for dense D2D user scenario. The paper presents review of existing channel and power allocation approaches and mathematical resource optimization solution techniques. In addition, the paper discusses the challenges hindering the realization of an effective allocation scheme in mmwave D2D communication and gives open research issues for further study.

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Section: Mobile Information Systemsmentioning

confidence: 99%

Section: Nonlinear Optimization Techniquesmentioning

confidence: 99%

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Resource Allocation in Millimeter-Wave Device-to-Device Networks

Ombongi

Absaloms

Kibet

2019

Mobile Information Systems

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“…[25][26][27][28] The D2D communication in cellular networks is defined as a direct communication between 2 mobile users without traversing the BS or core network. [25][26][27][28] The D2D communication in cellular networks is defined as a direct communication between 2 mobile users without traversing the BS or core network.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is meaningful and possible to further improve the spectral efficiency of such 2-tier HetNets by imbedding new techniques.It is well known, among the key techniques of 5G, that device-to-device (D2D) communication technique is also a promising candidate. [25][26][27][28] The D2D communication in cellular networks is defined as a direct communication between 2 mobile users without traversing the BS or core network. 29 The advantages of D2D communications are that they can not only enhance spectral efficiency but also potentially extend cellular coverage, improve energy efficiency, delay, and fairness.…”

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confidence: 99%

Energy‐spectrum‐efficient three‐tier heterogeneous networks with D2D harvesting energy and uplink coverage analysis

Jia

Fan

et al. 2018

Int J Communication

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To guard the communication quality of cell edge users (CEUs) and simultaneously improve the energy-spectrum efficiency, a novel 3-tier heterogeneous network (HetNet) model is proposed, which consists of macro cells, femtocells, and device-to-device (D2D) networks. Specially, with a predefined cell split factor R, the macro cell users are split into as cell center users (CCUs) and CEUs, respectively. Correspondingly, the total available spectrum band consisting of N channels is divided into CCU band and CEU band with a given coefficient p m . The CCU band containing p m N subchannels is shared by CCUs and femtocell users (FUs), and the CEU band containing(1 − p m ) N subchannels is shared by D2D users and CEUs. The perfect network synchronization is assumed, and a communication round consists of downlink transmission and uplink transmission phases. The battery-free D2D terminals harvest energy from the ambient radio frequency interference in the downlink transmission phase based on inverse power control scheme and communicate in the uplink transmission phase only when they harvest enough energy to perform channel inversion toward the receiver. For such 3-tier HetNets, by modeling the network elements as independent Poisson point processes (PPPs) and using stochastic geometry method, we first investigate the sufficiency probability that a D2D transmitter harvests enough energy to establish a communication link. Then, by combining sufficiency probability and channel access probability, the thinned independent PPPs for the locations of CCUs, CEUs, FUs, and D2D users are modeled. Based on these thinned PPP models, we perform a comprehensive investigation on the coverage probabilities of CCU, CEU, and FU uplinks as well as the D2D transmission. The simulated and numerical results show that using the presented cell split strategy enhances the performance of CCUs and CEUs because of the decrease of interference. The presented comparison analysis displays that the effect of D2D networks on the macro cell or the whole HetNets is limited and can be omitted. Therefore, the energy and spectrum efficiencies of networks are enhanced, simultaneously. At the same time, our results indicate that by using our derivations, we can perform the optimal design of the HetNets. KEYWORDScell center user, cell edge user, cell split, energy harvesting, heterogeneous networks 1 | INTRODUCTION Nowadays, with the proliferation of smart phones, tablets, and data-hungry multimedia applications, there has been exponential growth in mobile data and traffic. In recent report, 1 Cisco predicts that mobile data traffic will hit an annual run rate of 367.2 exabytes by 2020. More specifically, a compound annual growth rate to the data traffic from 2015 to 2020 is 53%. The fast and continuous growing mobile data traffic causes the deficiency of cellular network capacity. To mitigate this problem and meet the exponential growth of mobile traffic, the network operators have already started to devise new solutions. An advanced approach is strongly required ...

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