Journal ArticleDOI
On Relay Selection Schemes for Relay-Assisted D2D Communications in LTE-A Systems
TLDR
This work proposes a cross-layer relay selection scheme that considers several criteria jointly, including end-to-end data rate, relay-capable UE (RUE) remaining battery time, and end- to-end transmission delay on relay-assisted D2D path, and shows how to leverage these criteria at an eNB performing relay selection in D1D communications.Abstract:
Device-to-device (D2D) communication is a promising technique for traffic offloading in next-generation cellular systems. However, the use of only direct D2D communications limits the advantages of D2D communications due to relatively long separation distances or poor link quality between source and destination user equipments (UEs). Relay-assisted D2D communication was proposed as a supplement to direct D2D communications for enhancing traffic offloading capacity in long-term evolution–advanced (LTE-A) systems. This work aims to design a relay UE selection strategy for D2D communications, which improves D2D communication performance significantly. We propose a cross-layer relay selection scheme that considers several criteria jointly, including end-to-end data rate, relay-capable UE (RUE) remaining battery time, and end-to-end transmission delay on relay-assisted D2D path. We show how to leverage these criteria at an eNB performing relay selection in D2D communications. In particular, an end-to-end delay estimation model is established based on queuing theory. Simulation results validate the performance of the proposed scheme in terms of total amount of data transmitted under RUE remaining battery and end-to-end transmission delay.read more
Citations
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Journal ArticleDOI
Multi-Hop Relay-Aided Underlay D2D Communications for Improving Cellular Coverage Quality
Jinsong Gui,Jian Deng +1 more
TL;DR: The theoretical analysis proves the existence of Nash equilibrium, and the simulation results show that the proposed game decision algorithm accelerates convergence and the proposed whole scheme improves cellular coverage quality.
Journal ArticleDOI
Multicarrier Relay Selection for Full-Duplex Relay-Assisted OFDM D2D Systems
TL;DR: In this paper, the outage performance of the DF relay-assisted OFDM D2D system in two-hop networks is analyzed, and the exact expressions of outage probabilities when bulk and per-subcarrier relay selection criteria are applied.
Journal ArticleDOI
Resource-Optimized Multiarmed Bandit-Based Offload Path Selection in Edge UAV Swarms
TL;DR: A multiarmed bandit-based offload path selection scheme, which selects the most energy and processing optimized multihop path between a source and a target UAV, and results in significant savings of collective network energies, even for long operational durations.
Journal ArticleDOI
Joint Optimization of Energy-Harvesting-Powered Two-Way Relaying D2D Communication for IoT: A Rate–Energy Efficiency Tradeoff
TL;DR: The numerical results investigate the performance of the REET-EH algorithm and show its consistency over several parameters, and illustrate that the proposed algorithm improves the system performance compared with other state-of-the-art algorithms with regard to the D2D link rate and EE.
Journal ArticleDOI
Optimal Resource and Power Allocation With Relay Selection for RF/RE Energy Harvesting Relay-Aided D2D Communication
TL;DR: A low complexity algorithm, namely the resource and power allocation with relay selection EH-aided algorithm (RPRS-EH), which determines the reuse partners, the PS factor sub-optimal value with optimal links power allocation, and provides two different strategies for optimal relay selection is proposed.
References
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Book
Queueing Systems. Volume 1: Theory
TL;DR: The purpose of this document is to summarize the main points of the book written by Leonard Kleinrock, titled, ‘Queueing Systems’, which is about queueing systems.
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
Device-to-Device Communications Underlaying Cellular Networks
TL;DR: Numerical results show that the proposed scheme can significantly improve the performance of the hybrid system in terms of D2D access rate and the overall network throughput.
Journal ArticleDOI
Device-to-Device Communication in LTE-Advanced Networks: A Survey
TL;DR: A comprehensive survey of available D2D related research works ranging from technical papers to experimental prototypes to standard activities is provided, and some open research problems which deserve further studies are outlined.