Performance Analysis of a Device-to-Device Offloading Scheme in a Vehicular Network Environment

TL;DR

This paper analyzes a D2D offloading scheme in vehicular networks, deriving an analytical model to optimize energy efficiency by adjusting transmission range based on vehicle speed, content popularity, and delay constraints.

Contribution

It provides a novel analytical expression for D2D content offloading probability in vehicular networks and identifies the optimal transmission range for energy minimization.

Findings

Optimal transmission range minimizes total energy consumption.

Probability of D2D offloading depends on vehicle speed and content popularity.

Model enables efficient design of vehicular content delivery schemes.

Abstract

We consider a scheme for offloading the delivery of contents to mobile devices in a vehicular networking scenario. Each content can be delivered to the requesting device either by a neighboring device or, at the expiration of a maximum delay, by the network infrastructure nodes. We compute the analytical expression of the probability that the content delivery is offloaded through a Device-to-Device (D2D) communication as a function of the maximum transmission range allowed for D2D communications, the content popularity, and the vehicles speed. We show that, using the model, it is possible to identify the optimal maximum transmission range, which minimizes the total energy consumption (of the infrastructure plus mobile devices).