Cooperative intelligent transport systems rely on a set of Vehicle-to-Everything (V2X) applications to enhance road safety. Emerging new V2X applications like Advanced Driver Assistance Systems (ADASs) and Connected Autonomous Driving (CAD) applications depend on a significant amount of shared data and require high reliability, low end-to-end (E2E) latency, and high throughput. However, present V2X communication technologies such as ITS-G5 and C-V2X (Cellular V2X) cannot satisfy these requirements alone. In this paper, we propose an intelligent, scalable hybrid vehicular communication architecture that leverages the performance of multiple Radio Access Technologies (RATs) to meet the needs of these applications. Then, we propose a communication mode selection algorithm based on Deep Reinforcement Learning (DRL) to maximize the network's reliability while limiting resource consumption. Finally, we assess our work using the platooning scenario that requires high reliability. Numerical results reveal that the hybrid vehicular communication architecture has the potential to enhance the packet reception rate (PRR) by up to 30% compared to both the static RAT selection strategy and the multi-criteria decision-making (MCDM) selection algorithm. Additionally, it improves the efficiency of the redundant communication mode by 20% regarding resource consumption
A Multi-Agent DRL-Based Framework for Optimal Resource Allocation and Twin Migration in the Multi-Tier Vehicular Metaverse
Hamad Bin Khalifa University(哈马德·本·哈利法大学);Qatar University(卡塔尔大学);École de Technologie Supérieure (ÉTS)(高等技术学院);Mohamed Bin Zayed University of Artificial Intelligence (MBZUAI)(穆罕默德·本·扎耶德人工智能大学)
Deep Reinforcement Learning for Adaptive Network Slicing in 5G for Intelligent Vehicular Systems and Smart Cities
University of South Florida(南佛罗里达大学);Electrical Engineering Department, University of South Florida(南佛罗里达大学电气工程系);University of South Florida, Tampa, FL 33620, USA(南佛罗里达大学,美国佛罗里达州坦帕市,邮编33620)
Synesthesia of Machines (SoM)-Enhanced ISAC Precoding for Vehicular Networks with Double Dynamics
Peking University(北京大学);The Hong Kong University of Science and Technology (Guangzhou)(香港科技大学(广州));Hong Kong University of Science and Technology(香港科技大学)
Lightweight Authenticated Task Offloading in 6G-Cloud Vehicular Twin Networks
The Ohio State University(俄亥俄州立大学);BTS Group(BTS集团);Istanbul Technical University(伊斯坦布尔理工大学);Memorial University of Newfoundland(纽芬兰纪念大学);Edinburgh Napier University(爱丁堡龙比亚大学)
Multi-Agent Deep Reinforcement Learning for Dynamic Avatar Migration in AIoT-enabled Vehicular Metaverses with Trajectory Prediction
Guangdong University of Technology(广东工业大学);Nanyang Technological University(南洋理工大学);Singapore University of Technology and Design(新加坡科技设计大学);Sun Yat-sen University(中山大学);University of Sydney(悉尼大学)
Reducing Learning Difficulties: One-Step Two-Critic Deep Reinforcement Learning for Inverter-based Volt-Var Control
Tsinghua-Berkeley Shenzhen Institute, Tsinghua University(清华大学清华-伯克利深圳学院);Shanghai University of Electric Power(上海电力大学);Tsinghua University(清华大学);Beihang University(北京航空航天大学);Digital Grid Research Institute, China Southern Power Grid(中国南方电网数字电网研究院)
Reducing Action Space: Reference-Model-Assisted Deep Reinforcement Learning for Inverter-based Volt-Var Control
Tsinghua-Berkeley Shenzhen Institute, Tsinghua University(清华大学清华-伯克利深圳学院);Shanghai University of Electric Power(上海电力大学);Tsinghua University(清华大学);Beihang University(北京航空航天大学)
VoI-Driven Joint Optimization of Control and Communication in Vehicular Digital Twin Network
School of Engineering, University of Guelph(圭尔夫大学工程学院);College of Electrical Engineering and Computer Sciences, Ningbo University(宁波大学电气与计算机科学学院);Department of Electrical and Computer Engineering, University of Waterloo(滑铁卢大学电气与计算机工程系)
Reconfigurable Intelligent Surface Aided Vehicular Edge Computing: Joint Phase-shift Optimization and Multi-User Power Allocation
School of Internet of Things Engineering, Jiangnan University(江南大学物联网工程学院);Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Tsinghua University(清华大学电子工程系,北京信息科学与技术国家研究中心);State Key Lab. of ISN and School of Telecommunications Engineering, Xidian University(西安电子科技大学信息与通信工程学院);Department of Electrical and Computer Engineering, Hong Kong University of Science and Technology (HKUST)(香港科学与技术大学电气与计算机工程系)
An Optimal ODAM-Based Broadcast Algorithm for Vehicular Ad-Hoc Networks
广播路由是近年来车载自组织网络的一个重要研究领域。然而,在现有的VANET广播路由协议中,分组递送速率通常较低。因此,根据车载自组网的特点设计合适的广播协议成为车载自组网发展的关键。本文分析了现有的VAN广播路由协议的不足,提出了一种基于ODAM(Optimized Dissemination of Alarm Messages)协议的改进算法(ODAM-C)。ODAM-C算法根据ODAM的转发特性,通过两种机制提高了数据包的投递率。第一种基于距离的机制通过考虑源节点、转发节点和接收节点之间的角度来降低分组丢失的可能性。第二种机制通过增加转发节点的冗余度来保证数据包的成功投递率。通过分析和仿真,我们表明,与两种广泛使用的现有协议相比,所提出的算法可以提高车载网络的分组传输速率。
DRL-Based Optimization for AoI and Energy Consumption in C-V2X Enabled IoV
School of Internet of Things Engineering, Jiangnan University(江南大学物联网工程学院);Department of Electronic Engineering, State Key laboratory of Space Network and Communications, Tsinghua University(清华大学电子工程系、空间网络与通信国家重点实验室);Department of Electronic Engineering, Shanghai JiaoTong University(上海交通大学电子工程系)
Congestion Aware Spray And Wait Protocol: A Congestion Control Mechanism For The Vehicular Delay Tolerant Network
在过去的几年里,车载自组织网络(VANET)已经成为一个重要的研究领域。为提高车辆网络排放系统的性能进行了大量研究。对VANET进行的进一步研究的一个结果是车辆延迟容忍网络(VDTN)。它是移动DTN的一种应用,其中节点使用存储-携带-转发方法在网络中中继消息。由于它的高移动性,它遭受频繁的断开连接,也在节点处,这导致消息丢弃的拥塞。为了最大限度地减少消息的下降率,从而优化消息传递的概率,使司机越来越多地了解道路的情况,我们提出了一种拥塞控制机制:拥塞感知喷射和等待(CASaW)协议在这项工作中,以优化消息传递到其目的地的速率,从而提高司机在车辆环境中的意识,从而提高道路安全。结果表明,我们的命题表现优于其他经典的VDTN协议的消息传递概率和丢包率的性能指标。我们使用虚拟网络环境(ONE)模拟器实现了经典的VDTN协议:PROPHET协议,Epidemic协议,MaxProp协议和Spray and Wait协议。仿真结果表明,我们提出的拥塞控制机制具有更好的性能,因为它保持了良好的消息传递率,以及最小化数据包丢失率,从而优化了消息到达目的地的机会,从而提高道路安全。