期刊
IEEE TRANSACTIONS ON MOBILE COMPUTING
卷 22, 期 6, 页码 3665-3676出版社
IEEE COMPUTER SOC
DOI: 10.1109/TMC.2021.3138449
关键词
Analytical models; Closed-form solutions; Roads; Stochastic processes; Switches; Quality of service; Handover; Millimeter-wave communication; V2X; 5G NR; stochastic geometry
Mobility management in millimeter-wave (mmWave) cellular networks is complex due to the directional beamforming in mmWave devices. Stochastic modeling of mmWave vehicular communication can provide insight into coverage and rate behavior, beyond traditional analysis. This article focuses on beam management in mmWave vehicular networks, particularly in a multi-lane divided highway scenario.
Mobility management is a major challenge for millimeter-wave (mmWave) cellular networks. In particular, directional beamforming in mmWave devices renders high-speed mobility support very complex. This complexity, however, is not limited to system design but also the performance estimation and evaluation. Hence, some have turned their attention to stochastic modeling of mmWave vehicular communication to derive closed-form expressions that can characterize the coverage and rate behavior of the network. In this article, we model and analyze the beam management for mmWave vehicular networks. To the best of our knowledge, this is the first work that goes beyond coverage and rate analysis. Specifically, we focus on a multi-lane divided highway scenario in which base stations and vehicles are present on both sides of the highway. In addition to providing analytical expressions for the average number of beam switching and handover events, we provide design insights for the operators to fine-tune their network through more informed choice of system parameters, including the number of resources dedicated to channel feedback and beam alignment operations.
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