Telecommunication Systems and Computer Networks

Design and evaluation of a system of direct connections d2d with lte cellular assistance

A. V. Pyattaev^a, S. D. Andreev^a, E. A. Koucheryavy<sup>b

a</sup> Peoples' Friendship University of Russia, Moscow
^b Moscow Institute of Electronics and Mathematics — Higher School of Economics

Abstract: Due to the growing popularity of mobile user applications, cellular network operators are increasingly interested in offloading their scarce licensed spectrum resources. To this aim, using unlicensed-band radio technologies is attractive owing to its reduced costs. This work designs a system of direct D2D (device-to-device) connections to offload mobile traffic that is served by LTE (long-term evolution) cellular networks. In particular, a network assistance protocol over LTE architecture is proposed for D2D connections, and its system-level performance is evaluated to quantify the resulting traffic-steering efficiency. In addition, practical operation of D2D communication in a test LTE network is described, which allows making substantiated conclusions about the actual feasibility of the proposed solution in real-life conditions.

Keywords: mobile traffic, lte cellular communication, direct connections with network assistance, wifi direct radio technology, design and evaluation.

UDC: 004.77

DOI: 10.18721/JCSTCS.11202