Performance Analysis of Uplink/Downlink Decoupled Access in Cellular-V2X Networks
Luofang Jiao, Kai Yu, Jiacheng Chen, Tingting Liu, Haibo Zhou, Lin Cai
备注：
15 pages, 10 figures
发表信息：
Jiao L, Yu K, Chen J, et al. Performance Analysis of Uplink/Downlink Decoupled Access in Cellular-V2X Networks[J]. IEEE Transactions on Mobile Computing, 2023
This paper firstly develops an analytical framework to investigate the performance of uplink (UL) / downlink (DL) decoupled access in cellular vehicle-to-everything (C-V2X) networks, in which a vehicle's UL/DL can be connected to different macro/small base stations (MBSs/SBSs) separately. Using the stochastic geometry analytical tool, the UL/DL decoupled access C-V2X is modeled as a Cox process, and we obtain the following theoretical results, i.e., 1) the probability of different UL/DL joint association cases i.e., both the UL and DL are associated with the different MBSs or SBSs, or they are associated with different types of BSs; 2) the distance distribution of a vehicle to its serving BSs in each case; 3) the spectral efficiency of UL/DL in each case; and 4) the UL/DL coverage probability of MBS/SBS. The analyses reveal the insights and performance gain of UL/DL decoupled access. Through extensive simulations, \textcolor{black}{the accuracy of the proposed analytical framework is validated.} Both the analytical and simulation results show that UL/DL decoupled access can improve spectral efficiency. The theoretical results can be directly used for estimating the statistical performance of a UL/DL decoupled access C-V2X network.
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Princeton University（普林斯顿大学）；Imperial College London（帝国理工学院）
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Amirkabir University of Technology（阿米尔卡比尔理工大学）；California State University, Long Beach（加州州立大学长滩分校）
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