Wireless Networks

, Volume 23, Issue 3, pp 787–804 | Cite as

Resource allocation for network-controlled device-to-device communications in LTE-Advanced

  • G. Nardini
  • G. Stea
  • A. Virdis
  • D. Sabella
  • M. Caretti
Article

Abstract

Network-controlled device-to-device (D2D) communication allows cellular users to communicate directly, i.e., without passing through the eNodeB, while the latter retains control over resource allocation. This allows the same time–frequency resources to be allocated to spatially separated D2D flows simultaneously, thus increasing the cell throughput. This paper presents a framework for: (1) selecting which communications should use the D2D mode, and when, and (2) allocating resources to D2D and non-D2D users, exploiting reuse for the former. We show that the two problems, although apparently similar, should be kept separate and solved at different timescales in order to avoid problems, such as excessive packet loss. We model both as optimization problems, and propose a heuristic solution to the second, which must be solved at millisecond timescales. Simulation results show that our framework is practically viable, it avoids the problem of packet losses, increases throughput and reduces delays.

Keywords

LTE-Advanced Device-to-device Resource allocation Optimization 

Notes

Acknowledgments

The subject matter of this paper includes description of results of a joint research project carried out by Telecom Italia and the University of Pisa. Telecom Italia reserves all proprietary rights in any process, procedure, algorithm, article of manufacture, or other result of said project herein described. The authors wish to thank Andrea Rossali, formerly MSc student at the University of Pisa, for his contributions to the code.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • G. Nardini
    • 1
  • G. Stea
    • 1
  • A. Virdis
    • 1
  • D. Sabella
    • 2
  • M. Caretti
    • 2
  1. 1.Dipartimento di Ingegneria dell’InformazioneUniversity of PisaPisaItaly
  2. 2.Telecom Italia LabTurinItaly

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