Radio Environment Maps for Dynamic Frequency Selection in V2X Communications

TL;DR

This paper explores the use of radio environment maps to enable dynamic spectrum sharing for vehicular communications, aiming to alleviate congestion in dedicated transportation frequency bands.

Contribution

It introduces a database-supported VDSA framework with measurement data and three algorithms for spectrum access in vehicular platooning.

Findings

Radio environment maps can effectively support VDSA.

The proposed algorithms improve spectrum utilization.

Measurement data validates the approach.

Abstract

In this paper, we investigate the concept of database supported Vehicular Dynamic Spectrum Access (VDSA) for platooning. As various researchers show that the 5.9 GHz band, devoted for Intelligent Transportation Systems, may suffer from congestion of the channel, we propose to offload part of this traffic to white-spaces with the guidance of the active database system. In our work, we describe our measurement campaign which delivered data for population of the dedicated radio environment map. Once the map is created, it was used in three proposed algorithms for VDSA: an optimal and two pragmatic approaches.