Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication net...Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication network and become one of the elements in the network.Over recent decades,in the area of intelligent transportation,pedestrian and transport infrastructure are connected to the communication network to improve the driving safety and traffic efficiency which is known as the ICV(Intelligent Connected Vehicle).This paper summarizes the global ICV progresses in the past decades and the latest activities of ICV in China,and introduces various aspects regarding the recent development of the ICV,including industry development,spectrum and standard,at the same time.展开更多
With the rapid development of vehicular access network,three different communication modes have emerged as the fundamental technologies in cellular V2X,i.e.,cellular mode,reuse mode,and dedicated mode,through differen...With the rapid development of vehicular access network,three different communication modes have emerged as the fundamental technologies in cellular V2X,i.e.,cellular mode,reuse mode,and dedicated mode,through different spectrum sharing strategies.However,how to conduct the multi-mode access management for cellular V2X is challenging considering the heterogeneity of network resource and the diverse vehicular services demands.In this paper,we investigate a software defined multi-mode access management framework in cellular V2X,which is capable of providing flexibility and programmability for dynamic spectrum sharing in vehicular access.We first conduct the performance analysis of multi-mode communications in cellular V2X.Then,we design an analytic hierarchy process(AHP)based evolutionary game to optimize the multi-mode access management solution,in which four performance indicators are jointly considered,including transmission rate,interference,transmission delay,and energy consumption.Extensive experimental simulations have validated the superiority of the proposed algorithm,and illustrated the impact of different vehicle access schemes,signal-to-interference-plus-noise ratio(SINR)threshold and other parameters on the performance of cellular V2X.展开更多
The number of accidents in the campus of Suranaree University of Technology(SUT)has increased due to increasing number of personal vehicles.In this paper,we focus on the development of public transportation system usi...The number of accidents in the campus of Suranaree University of Technology(SUT)has increased due to increasing number of personal vehicles.In this paper,we focus on the development of public transportation system using Intelligent Transportation System(ITS)along with the limitation of personal vehicles using sharing economy model.The SUT Smart Transit is utilized as a major public transportation system,while MoreSai@SUT(electric motorcycle services)is a minor public transportation system in this work.They are called Multi-Mode Transportation system as a combination.Moreover,a Vehicle toNetwork(V2N)is used for developing theMulti-Mode Transportation system in the campus.Due to equipping vehicles with On Board Unit(OBU)and 4G LTE modules,the real time speed and locations are transmitted to the cloud.The data is then applied in the proposed mathematical model for the estimation of Estimated Time of Arrival(ETA).In terms of vehicle classifications and counts,we deployed CCTV cameras,and the recorded videos are analyzed by using You Only Look Once(YOLO)algorithm.The simulation and measurement results of SUT Smart Transit and MoreSai@SUT before the covid-19 pandemic are discussed.Contrary to the existing researches,the proposed system is implemented in the real environment.The final results unveil the attractiveness and satisfaction of users.Also,due to the proposed system,the CO_(2) gas gets reduced when Multi-Mode Transportation is implemented practically in the campus.展开更多
文摘Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication network and become one of the elements in the network.Over recent decades,in the area of intelligent transportation,pedestrian and transport infrastructure are connected to the communication network to improve the driving safety and traffic efficiency which is known as the ICV(Intelligent Connected Vehicle).This paper summarizes the global ICV progresses in the past decades and the latest activities of ICV in China,and introduces various aspects regarding the recent development of the ICV,including industry development,spectrum and standard,at the same time.
基金supported by the National Natural Science Foundation of China under Grant 61871211。
文摘With the rapid development of vehicular access network,three different communication modes have emerged as the fundamental technologies in cellular V2X,i.e.,cellular mode,reuse mode,and dedicated mode,through different spectrum sharing strategies.However,how to conduct the multi-mode access management for cellular V2X is challenging considering the heterogeneity of network resource and the diverse vehicular services demands.In this paper,we investigate a software defined multi-mode access management framework in cellular V2X,which is capable of providing flexibility and programmability for dynamic spectrum sharing in vehicular access.We first conduct the performance analysis of multi-mode communications in cellular V2X.Then,we design an analytic hierarchy process(AHP)based evolutionary game to optimize the multi-mode access management solution,in which four performance indicators are jointly considered,including transmission rate,interference,transmission delay,and energy consumption.Extensive experimental simulations have validated the superiority of the proposed algorithm,and illustrated the impact of different vehicle access schemes,signal-to-interference-plus-noise ratio(SINR)threshold and other parameters on the performance of cellular V2X.
基金This work was supported by Suranaree University of Technology(SUT).The authors would also like to thank SUT Smart Transit and Thai AI for supporting the experimental and datasets.
文摘The number of accidents in the campus of Suranaree University of Technology(SUT)has increased due to increasing number of personal vehicles.In this paper,we focus on the development of public transportation system using Intelligent Transportation System(ITS)along with the limitation of personal vehicles using sharing economy model.The SUT Smart Transit is utilized as a major public transportation system,while MoreSai@SUT(electric motorcycle services)is a minor public transportation system in this work.They are called Multi-Mode Transportation system as a combination.Moreover,a Vehicle toNetwork(V2N)is used for developing theMulti-Mode Transportation system in the campus.Due to equipping vehicles with On Board Unit(OBU)and 4G LTE modules,the real time speed and locations are transmitted to the cloud.The data is then applied in the proposed mathematical model for the estimation of Estimated Time of Arrival(ETA).In terms of vehicle classifications and counts,we deployed CCTV cameras,and the recorded videos are analyzed by using You Only Look Once(YOLO)algorithm.The simulation and measurement results of SUT Smart Transit and MoreSai@SUT before the covid-19 pandemic are discussed.Contrary to the existing researches,the proposed system is implemented in the real environment.The final results unveil the attractiveness and satisfaction of users.Also,due to the proposed system,the CO_(2) gas gets reduced when Multi-Mode Transportation is implemented practically in the campus.
