基于博弈论的车联网通信中继选择算法研究

Research on Game Theory Based Relay Selection Algorithm for V2X

车联网技术通过在道路的两旁部署路边单元,可为车辆提供高质量的实时服务。然而,由于车辆高度动态的特性,车辆与路边单元通信的过程中,车辆可能会跨越不同的路边单元覆盖范围,从而导致下行链路发生中断,此时需要选择其他车辆作为中继节点协作传输。针对以上问题,建立了车联网中继辅助通信动态模型,利用联盟博弈策略和信道状态信息对临近同向移动车辆进行中继选择,设计基于中继辅助通信的车载动态网络容量提升方法。最后,通过仿真验证了该方法的有效性。

Vehicles to everything(V2X)can provide high-quality real-time services to vehicles,by deploying roadside units along the road.However,due to the highly dynamic nature of vehicles,during the process of communication between vehicles and roadside units,vehicles may cross the coverage areas of different roadside units,resulting in downlink outage events.In this case,other vehicles need to be selected as relay nodes for cooperative transmissions.In view of the above problems,a dynamic model is established for relay-assisted communications in vehicle networks,coalitional game strategy and channel state information are utilized to select relays for adjacent same-direction mobile vehicles,and a capacity enhancement method is designed based on relay-assisted communications for vehicle dynamic networks.Finally,the effectiveness of the proposed method is verified by the simulation results.