VANET inherent capability for D2D discovery -

Abstract

Device-to-Device (D2D) communication has gained a lot of interest in the last years. Recently, it has been accepted as a promising concept as part of the third generation partnership project (3GPP) standard in the LTE-A release 12 and release 13 under the name of Proximity-Based Services (ProSe). However, the proposed solutions to integrate the D2D in the cellular network require added functionalities on the network resources, mainly in the discovery process. In this thesis, we mitigate the requirement of additional resources in the LTE-A network by proposing a novel D2D discovery protocol. Specifically, we propose to offload the D2D discovery onto the Vehicular Ad-hoc Networks (VANETs) by using the inherent knowledge of the Road Side Unit (RSU) about the users in its coverage area. In addition, we propose a framework to model and analyze the duration of our discovery protocol in sparse highway network through mathematical derivations. Then, all the results are validated through extensive simulations on both Network Simulator 3 (NS3) and Matlab. The analytical and numerical results demonstrate the effectiveness of the proposed protocol and show that low discovery latency can be reached without using additional cellular resources.