Interference Avoidance Based on Shared Relay Nodes for Device-to-Device Radio Underlying Cellular Networks

Mochan YANG
Shannai WU
Hak-Seong KIM
Kyong-Bin SONG
Won Cheol LEE
Oh-Soon SHIN

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E97-A    No.2    pp.704-707
Publication Date: 2014/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E97.A.704
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
3GPP LTE-Advanced,  device-to-device,  shared relay node,  resource allocation,  interference avoidance,  

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A D2D (Device-to-Device) communication system needs to cope with inter-cell interference and other types of interferences between cellular network and D2D links. As a result, macro user equipments, particularly those located near a cell edge, will suffer from serious link performance degradation. We propose a novel interference avoidance mechanism assisted by the SRN (Shared Relay Node) in this letter. The SRN not only performs data re-transmission as a typical type-II relay, but has several newly defined features to avoid interference between cellular network and D2D links. The superb performance by the proposed scheme is evaluated through extensive system level simulations.