Analysis of V2X Sidelink Positioning in sub-6 GHz

TL;DR

This paper explores V2X sidelink positioning in sub-6 GHz bands, proposing a new performance bound that predicts accuracy amid multipath effects, supported by ray-tracing simulations.

Contribution

It introduces a novel performance bound for sub-6 GHz V2X sidelink positioning, addressing multipath challenges and demonstrating its effectiveness through simulations.

Findings

Sidelink positioning is feasible in sub-6 GHz bands.

The new performance bound accurately predicts positioning performance.

Multipath complexity significantly impacts positioning accuracy.

Abstract

Radio positioning is an important part of joint communication and sensing in beyond 5G communication systems. Existing works mainly focus on the mmWave bands and under-utilize the sub-6 GHz bands, even though it is promising for accurate positioning, especially when the multipath is uncomplicated, and meaningful in several important use cases. In this paper, we analyze V2X sidelink positioning and propose a new performance bound that can predict the positioning performance in the presence of severe multipath. Simulation results using ray-tracing data demonstrate the possibility of sidelink positioning, and the efficacy of the new performance bound and its relation with the complexity of the multipath.