Cellular vehicular networks constitute an important part of future vehicular communication systems. However, they pose challenges to fulfill vehicles with demands for the transmission rates of various network services while achieving satisfactory costs and energy consumption. The cloud radio access network architecture is considered as a green wireless access network framework that reduces the deployment costs of base stations while achieving resource sharing and dynamic scheduling to lower energy consumption, and thus will greatly improve spectrum efficiency. in this article, we first propose a cloud vehicular radio access network (C-VRAN) architecture to enable rapid network innovation for green vehicular communications. Specifically, we propose a vehicular network framework consisting of centralized processing, collaborative radio, real-time cloud computing, and data compression functions. Then, the design and the potential benefits of C-VRAN are presented in detail. Moreover, an effective data compression approach for the proposed architecture is proposed to meet low-distortion compression for cellular vehicular network data, thereby improving fiber resource utilization. Finally, we briefly discuss key challenges and solutions for future green vehicular communications.

中文翻译：

---

未来车辆网络的绿色通信：数据压缩方法、机遇和挑战


蜂窝车载网络构成了未来车载通信系统的重要组成部分。然而，它们对满足车辆对各种网络服务的传输速率的需求，同时实现令人满意的成本和能耗提出了挑战。云无线接入网架构被认为是一种绿色无线接入网架构，可以降低基站的部署成本，同时实现资源共享和动态调度，降低能耗，从而大幅提高频谱效率。在本文中，我们首先提出了一种云车载无线接入网络（C-VRAN）架构，以实现绿色车载通信的快速网络创新。具体来说，我们提出了一个由集中处理、协作无线电、实时云计算和数据压缩功能组成的车载网络框架。然后，详细介绍了 C-VRAN 的设计和潜在优势。此外，针对所提出的架构提出了一种有效的数据压缩方法，以满足蜂窝车载网络数据的低失真压缩，从而提高光纤资源利用率。最后，我们简要讨论了未来绿色车辆通信的主要挑战和解决方案。