C-V2X模式3调度方案的系统级仿真
System Level Simulation of Scheduling Schemes for C-V2X Mode-3
摘要：
第三代合作伙伴计划（3GPP）引入了蜂窝车联网（C-V2X）作为用于实现侧链路车辆通信的新颖技术。而分布式调度方案（即，C-V2X模式-4）已经由3GPP标准化，以便支持覆盖范围外的场景，集中式基于基础设施的方案（即，C-V2X模式-3）开放实施。在本文中，我们提出了两个C-V2X模式3方案的基础上二分图匹配（BGM），称为BGM-Pow和BGM-Dist。具体地，BGM-Pow基于车辆感知的总功率的最小化来分配子信道，而BGM-Dist基于子信道重用距离的最大化。通过仿真，我们表明，所提出的集中式方案优于C-V2X模式4，因为可以更有效地分配子信道，减少干扰。
英文摘要：
The 3rd Generation Partnership Project (3GPP) introduced Cellular Vehicle-to-Everything (C-V2X) as a novel technology for enabling sidelink vehicular communications. While a distributed scheduling scheme (i.e., C-V2X mode-4) has been standardized by 3GPP in order to support out-of-coverage scenarios, the design of centralized infrastructure-based schemes (i.e., C-V2X mode-3) is open to implementation. In this paper, we propose two C-V2X mode-3 schemes based on bipartite graph matching (BGM), called BGM - Pow and BGM - Dist. Specifically, BGM - Pow allocates subchannels based on the minimization of the overall power perceived by the vehicles whereas BGM - Dist is based on the maximization of the subchannels reusage distance. Through simulations we show that the proposed centralized schemes outperform C-V2X mode-4 as the subchannels can be assigned more efficiently with reduced interference.
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