Modeling and Performance Analysis of Full-Duplex Communications in Cache-Enabled D2D Networks

Naslcheraghi, Mansour; Afshang, Mehrnaz; Dhillon, Harpreet S.

doi:10.1109/icc.2018.8422592

Cited by 22 publications

(33 citation statements)

References 11 publications

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“…• Firstly, we investigate the delivery time performance of FD-MEC systems by considering a realistic model of the self-interference cancellation. Our work is fundamentally different from [19][20][21][22] in terms of performance metric and analysis method. Compared with [23], which understands the cache-aided FD system from the informationtheoretic asymptotic aspect and relies on the perfect assumption of self-interference cancellation, we consider the practical interference cancellation model and focus on precoding vectors design.…”

Section: B Our Contributionsmentioning

confidence: 95%

“…The role of caching in FD D2D networks is investigated in [19], [20] via stochastic geometry analysis. By considering all possible operating modes of an arbitrary device, the success probability is derived in [19] as a function of the caching capacity and interference distribution. It is shown in [20] that allowing a hybrid deployment of FD and HD modes can potentially further improve the coverage probability in cluster-based FD networks.…”

Section: A Related Workmentioning

confidence: 99%

“…Hence, standard methods can be used to solve this problem effectively. We note that the approximated problem (20) gives a suboptimal solution of problem (19) because e x 0k (x k − x 0k + 1) ≤ e x k , ∀x 0k .…”

Section: For Ease Of Presentation Let Us Define Parametersmentioning

confidence: 99%

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Full-Duplex Enabled Mobile Edge Caching: From Distributed to Cooperative Caching

Chatzinotas

Ottersten

et al. 2020

IEEE Trans. Wireless Commun.

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Mobile edge caching (MEC) has received much attention as a promising technique to overcome the stringent latency and data hungry requirements in future generation wireless networks. Meanwhile, full-duplex (FD) transmission can potentially double the spectral efficiency by allowing a node to receive and transmit in the same time/frequency block simultaneously. In this paper, we investigate the delivery time performance of full-duplex enabled MEC (FD-MEC) systems, in which the users are served by distributed edge nodes (ENs), which operate in FD mode and are equipped with a limited storage memory. Firstly, we analyse the FD-MEC with different levels of cooperation among the ENs and take into account a realistic model of self-interference cancellation. Secondly, we propose a framework to minimize the system delivery time of FD-MEC under both linear and optimal precoding designs. Thirdly, to deal with the non-convexity of the formulated problems, two iterative optimization algorithms are proposed based on the inner approximation method, whose convergence is analytically guaranteed. Finally, the effectiveness of the proposed designs are demonstrated via extensive numerical results. It is shown that the cooperative scheme mitigates inter-user and self interference significantly better than the distributed scheme at an expense of inter-EN cooperation. In addition, we show that minimum mean square error (MMSE)-based precoding design achieves the best performance-complexity trade-off, compared with the zeroforcing and optimal designs.

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Section: B Our Contributionsmentioning

confidence: 95%

Section: A Related Workmentioning

confidence: 99%

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Full-Duplex Enabled Mobile Edge Caching: From Distributed to Cooperative Caching

Chatzinotas

Ottersten

et al. 2020

IEEE Trans. Wireless Commun.

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“…First, we need to get the probability of successful transmission by using Eq. (7). Then we put the final result of Eq.…”

Section: A Local Delay Definitionmentioning

confidence: 99%

Delay Analysis in Full-Duplex Heterogeneous Cellular Networks

Marandi

Naslcheraghi

Ghorashi

et al. 2019

IEEE Trans. Veh. Technol.

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Heterogeneous networks (HetNets) as a combination of macro cells and small cells are used to increase the cellular network's capacity, and present a perfect solution for highspeed communications. Increasing area spectrum efficiency and capacity of HetNets largely depends on the high speed of backhaul links. One effective way which is currently utilized in HetNets is the use of full-duplex (FD) technology that potentially doubles the spectral efficiency without the need for additional spectrum. On the other hand, one of the most critical network design requirements is delay, which is a key representation of the quality of service (QoS) in modern cellular networks. In this paper, by utilizing tools from the stochastic geometry, we analyze the local delay for downlink (DL) channel, which is typically defined as the mean number of required time slots for a successful communication. Given imperfect self-interference (SI) cancellation in practical FD communications, we utilize duplex mode (half-duplex (HD) or FD) for each user based on the distance from its serving base station (BS). Further, we aim to investigate the energy efficiency (EE) for both duplexing modes, i.e., HD and FD, by considering local delay. We conduct extensive simulations to validate system performance in terms of local delay versus different system key parameters.

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“…Not only different design goals, but also different techniques and scenarios were considered for cache-aided D2D. Stochastic geometry was exploited to analyze networks and propose caching policy designs in [20], [21]. Considering MIMO systems, scaling laws of throughput were discussed in [22] and [23].…”

Section: A Literature Review and Motivationsmentioning

confidence: 99%

Individual Preference Aware Caching Policy Design for Energy-Efficient Wireless D2D Communications

Lee

Molisch

2017

GLOBECOM 2017 - 2017 IEEE Global Communications Conference

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Cache-aided wireless device-to-device (D2D) networks allow significant throughput increase, depending on the concentration of the popularity distribution of files. While many previous investigations assumed that all users have the same preference, this may not be true in practice. This work investigates whether and how the information about individual preferences can benefit such cache-aided D2D networks. Considering a clustered network, we derive a network utility that considers both the user distribution and channel fading effects, and formulate a utility optimization problem. This formulation can be used to optimize several important quantities, including throughput, energy efficiency (EE), and hit-rate, and solve different tradeoff problems. We provide designs of caching policies that solve the utility maximization problem with and without coordination between the devices, and prove that the coordinated design can obtain the stationary point under a mild assumption. Using simulations of practical setups, we show that by properly exploiting the diversity entailed by the individual preferences, performance can be improved significantly. Besides, different types of tradeoffs exist between different performance metrics, and they can be managed by means of proper caching policy and cooperation distance design.

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Modeling and Performance Analysis of Full-Duplex Communications in Cache-Enabled D2D Networks

Cited by 22 publications

References 11 publications

Full-Duplex Enabled Mobile Edge Caching: From Distributed to Cooperative Caching

Full-Duplex Enabled Mobile Edge Caching: From Distributed to Cooperative Caching

Delay Analysis in Full-Duplex Heterogeneous Cellular Networks

Individual Preference Aware Caching Policy Design for Energy-Efficient Wireless D2D Communications

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