基于主动感知辅助的车联网波束赋形

基于主动感知辅助的车联网波束赋形

孟骁¹，刘凡¹，夏树强^2,3

（1. 南方科技大学，中国 深圳 518055；2. 中兴通讯股份有限公司，中国 深圳 518057；3. 移动网络和移动多媒体技术国家重点实验室，中国 深圳 518055）

摘要：毫米波大规模多入多出系统具有提升车联网系统服务质量的潜力，但现有的系统设计无法充分发挥该潜力。针对该问题，通过分析毫米波频段通信信道与感知信道的相似特性，论证了在车联网系统中使用感知功能对通信功能进行辅助可行性。在此基础上，以波束管理为核心，阐述了具有更低导频开销的帧结构方案和使用感知功能辅助通信功能的信号处理一般流程。最后，总结并讨论了基于感知辅助的车联网通信系统中的若干开放问题。

关键词：通信感知一体化；车辆基础设施互联系统；大规模多入多出系统

Beam Management in Vehicular Communications Assisted by Active Sensing

MENG Xiao¹, LIU Fan¹, XIA Shuqiang^{2, 3}

(1. South University of Science and Technology of China, Shenzhen 518055, China; 2. ZTE Corporation, Shenzhen 518057, China; 3. State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen 518055, China)

Abstract: The millimeter-wave massive multiple-input multiple-output systems have the potential to improve the service quality of vehicle-to-infrastructure (V2I) networks, but existing system designs cannot fully exploit this potential. In response to this problem, the feasibility of using the sensing function to assist the communication function in the V2I networks is demonstrated by analyzing the similar characteristics of the communication channel and the sensing channel in the millimeter wave system. On this basis, a general design framework, the physical layer data-frame structure, and the signal processing pipeline are elaborated. Finally, Several open problems in sensing-assisted V2I networks are summarized and discussed.

Keyword：integrated sensing and communication; V2I; massive multi-input-multi-output