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3GPP LTE-assisted Wi-Fi-direct: Trial implementation of live D2D technology

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)877-887
Number of pages11
JournalETRI Journal
Issue number5
Publication statusPublished - 1 Oct 2015
Publication typeA1 Journal article-refereed


This paper is a first-hand summary on our comprehensive live trial of cellular-assisted device-todevice (D2D) communications currently being ratified by the standards community for next-generation mobile broadband networks. In our test implementation, we employ a full-featured 3GPP LTE network deployment and augment it with all necessary support to provide realtime D2D connectivity over emerging Wi-Fi-Direct (WFD) technology. As a result, our LTE-assisted WFD D2D system enjoys the required flexibility while meeting the existing standards in every feasible detail. Further, this paper provides an account on the extensive measurement campaign conducted with our implementation. The resulting real-world measurements from this campaign quantify the numerical effects of D2D functionality on the resultant system performance. Consequently, they shed light on the general applicability of LTE-assisted WFD solutions and associated operational ranges.


  • 3GPP LTE, Cellular assistance, Commercial opportunities, Device-to-device, Live trial, Performance measurements, Standardization, Wi-Fi-Direct

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