Distributed Resource Allocation for Device-to-Device Communication in LTE/LTE-A Networks

Abstract

Currently, 3GPP is working on device-to-device (D2D) communica- tions, which is regarded as a part of 5G mobile communication systems. This thesis focuses on allocation of radio resources, based on a scenario where out-of-coverage user equipments (UEs) communicate with a base station (BS), through an user equipment relay (UE-R) located within the cell coverage. Two algorithms have been developed, one focusing on adjusting di erent parameters to achieve higher performance in the de- veloped system. Whilst the other algorithm targets at battery depended resource allocation including four battery control allocation schemes. The outcome from the rst algorithm indicates that the performance is not highly depending on parameter con guration, but leaning towards how spectrum is shared by di erent users. The results from the second al- gorithm show that the performance of the studied network relies highly on the battery level of the UE-Rs and therefore they need to have strict battery control policies to exhibit show the bene t for in-band D2D com- munications.