Journal ArticleDOI
Energy Efficiency and Spectrum Efficiency of Multihop Device-to-Device Communications Underlaying Cellular Networks
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TLDR
The average energy efficiency and spectral efficiency of multihop D2D communications under Rayleigh fading channels are analyzed and close analytical approximations based on Taylor series expansion are provided.Abstract:
Device-to-device (D2D) communications are usually considered to be two user equipment units (UEs) communicating directly without going through the central base station (BS). In fact, they can be further broadened to multihop D2D communications in which a UE may help other UEs communicate with each other or assist other UEs to communicate with the BS. In this paper, the authors investigate a scenario of multihop D2D communications where one UE may help other two UEs to exchange information with a two-time-slot physical-layer network coding scheme. The authors analyze the average energy efficiency and spectral efficiency of multihop D2D communications under Rayleigh fading channels and get close analytical approximations based on Taylor series expansion. Comparisons with direct D2D communications and traditional cellular communications through BS are provided. The optimal UE transmission powers of these three different modes to maximize the energy efficiency are also derived.read more
Citations
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Journal ArticleDOI
A Survey of Device-to-Device Communications: Research Issues and Challenges
TL;DR: This work reviews recently proposed solutions in over explored and under explored areas in D2D, and provides new insights on open issues in these areas and discusses potential future research directions.
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Green Communication in Next Generation Cellular Networks: A Survey
TL;DR: For enhancing the battery life of the user terminals, a proposal is given in this paper, with spectrum sharing as its basis, to overcome the energy crunch.
Journal ArticleDOI
Energy-Efficient Matching for Resource Allocation in D2D Enabled Cellular Networks
TL;DR: This paper employs the Gale–Shapley algorithm to match D2D pairs with cellular UEs, which is proved to be stable and weak Pareto optimal, and extends the algorithm to address scalability issues in large-scale networks by developing tie-breaking and preference-deletion-based matching rules.
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Security for 5G Mobile Wireless Networks
TL;DR: A new 5G wireless security architecture is proposed, based on which the analysis of identity management and flexible authentication is provided, and a handover procedure as well as a signaling load scheme are explored to show the advantages of the proposed security architecture.
Journal ArticleDOI
An overview of device-to-device communication in cellular networks
TL;DR: The main characteristics of D2D communication including its usage scenarios, architecture, technical features, and areas of active research are discussed.
References
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Journal ArticleDOI
Device-to-device communication as an underlay to LTE-advanced networks
TL;DR: Device-to-device (D2D) communication underlaying a 3GPP LTE-Advanced cellular network is studied as an enabler of local services with limited interference impact on the primary cellular network.
Journal ArticleDOI
Design aspects of network assisted device-to-device communications
Gabor Fodor,Erik Dahlman,Gunnar Mildh,Stefan Parkvall,Norbert Reider,György Miklós,Zoltán Richárd Turányi +6 more
TL;DR: The 3GPP Long Term Evolution system is used as a baseline for D2D design, some of the key design challenges are reviewed, and solution approaches that allow cellular devices and D1D pairs to share spectrum resources and thereby increase the spectrum and energy efficiency of traditional cellular networks are proposed.
Journal ArticleDOI
Green Cellular Networks: A Survey, Some Research Issues and Challenges
TL;DR: A brief survey of methods to improve the power efficiency of cellular networks, explore some research issues and challenges and suggest some techniques to enable an energy efficient or "green" cellular network.
Journal ArticleDOI
Resource Sharing Optimization for Device-to-Device Communication Underlaying Cellular Networks
TL;DR: The results show that by proper resource management, D2D communication can effectively improve the total throughput without generating harmful interference to cellular networks.
Journal ArticleDOI
Fundamental trade-offs on green wireless networks
TL;DR: In this paper, the authors propose a framework for green radio research and integrate the fundamental issues that are currently scattered, which consists of four fundamental tradeoffs: deployment efficiency, energy efficiency, spectrum efficiency and delay power.