The uplink (UL)/downlink (DL) decoupled access has been emerging as a novel access architecture to improve the performance gains in cellular networks. In this paper, we investigate the UL/DL decoupled access performance in cellular vehicle-to-everything (C-V2X). We propose a unified analytical framework for the UL/DL decoupled access in C-V2X from the perspective of spectral efficiency (SE). By modeling the UL/DL decoupled access C-V2X as a Cox process and leveraging the stochastic geometry, we obtain the joint association probability, the UL/DL distance distributions to serving base stations and the SE for the UL/DL decoupled access in C-V2X networks with different association cases. We conduct extensive Monte Carlo simulations to verify the accuracy of the proposed unified analytical framework, and the results show a better system average SE of UL/DL decoupled access in C-V2X.
@article{arxiv.2212.02164,
title = {Spectral Efficiency Analysis of Uplink-Downlink Decoupled Access in C-V2X Networks},
author = {Luofang Jiao and Kai Yu and Yunting Xu and Tianqi Zhang and Haibo Zhou and Xuemin and Shen},
journal= {arXiv preprint arXiv:2212.02164},
year = {2022}
}