The increasing demand for industrial automation and intelligence has put forward higher requirements for the reliability of industrial wireless communication technology.As an international standard based on 802.11,Wir...The increasing demand for industrial automation and intelligence has put forward higher requirements for the reliability of industrial wireless communication technology.As an international standard based on 802.11,Wireless networks for Industrial Automation-Factory Automation(WIA-FA)greatly improves the reliability in factory automation scenarios by Time Division Multiple Access(TDMA).However,in ultra-dense WIA-FA networks with mobile users,the basic connection management mechanism is inefficient.Most of the handover and resource management algorithms are all based on frequency division multiplexing,not suitable for the TDMA in the WIA-FA network.Therefore,we propose Load-aware Connection Management(LACM)algorithm to adjust the linkage and balance the load of access devices to avoid blocking and improve the reliability of the system.And then we simulate the algorithm to find the optimal settings of the parameters.After comparing with other existing algorithms,the result of the simulation proves that LACM is more efficient in reliability and maintains high reliability of more than 99.8%even in the ultra-dense moving scenario with 1500 field devices.Besides,this algorithm ensures that only a few signaling exchanges are required to ensure load bal-ancing,which is no more than 5 times,and less than half of the best state-of-the-art algorithm.展开更多
Bank＇s business has taken many changes with the development of computer technology and economic globalization, and has faced fierce competition. Effectively countering such challenge and making profit has been the ma...Bank＇s business has taken many changes with the development of computer technology and economic globalization, and has faced fierce competition. Effectively countering such challenge and making profit has been the main task for the bank to survive and develop. Online bank as a new business entity, compared with the entity bank, has its own character and virtual effect that causes online bank＇s business activity totally different from common sense, which produces many new risks which never encounter in real condition. Based on the analysis of the risks online bank facing when doing business on the net, this paper brings forward to some advice on how to perfect online bank＇s business activity and improve transaction efficiency.展开更多
Technologies such as Advanced Driving Assistance System(ADAS)and Vehicle-to-Everything(V2X)in Connected and Automated Vehicles(CAVs)have greatly enhanced the comfort and convenience of driving.However,the increasing l...Technologies such as Advanced Driving Assistance System(ADAS)and Vehicle-to-Everything(V2X)in Connected and Automated Vehicles(CAVs)have greatly enhanced the comfort and convenience of driving.However,the increasing levels of intelligence and connectivity also expose CAVs to severe cybersecurity risks.The vehicles,Internet of Vehicles(IoV)and the cloud servers for CAVs are vulnerable to cyberattacks.Furthermore,many standards and regulations require Original Equipment Manufacturers(OEMs)to consider potential cybersecurity threats when designing and developing CAV products.Consequently,ensuring the cybersecurity for vehicles,networks,and the cloud has become a critical issue that OEMs must address.However,the vast number of CAVs and the variety of the vehicular network make it difficult for the existing cybersecurity assessment and protection methods to satisfy the requirements of the entire vehicle,IoV and cloud.This paper reviews the cybersecurity requirements and potential vulnerabilities of CAVs,the IoV,and cloud servers.Existing cybersecurity assessment,protection and operation methods are summarized.A novel resilient cybersecurity management system is proposed to address the cybersecurity challenges of CAVs.This proposed system can orchestrate management policies and allocate resources based on the urgency of cybersecurity tasks across the vehicle,IoV and cloud,which is suitable for the rapidly evolving CAVs and the continuously expanding services.展开更多
基金supported by NSFC project(grant No.61971359)Chongqing Municipal Key Laboratory of Institutions of Higher Education(grant No.cquptmct-202104)+1 种基金Fundamental Research Funds for the Central Universities,Sichuan Science and Technology Project(grant no.2021YFQ0053)State Key Laboratory of Rail Transit Engineering Informatization(FSDI).
文摘The increasing demand for industrial automation and intelligence has put forward higher requirements for the reliability of industrial wireless communication technology.As an international standard based on 802.11,Wireless networks for Industrial Automation-Factory Automation(WIA-FA)greatly improves the reliability in factory automation scenarios by Time Division Multiple Access(TDMA).However,in ultra-dense WIA-FA networks with mobile users,the basic connection management mechanism is inefficient.Most of the handover and resource management algorithms are all based on frequency division multiplexing,not suitable for the TDMA in the WIA-FA network.Therefore,we propose Load-aware Connection Management(LACM)algorithm to adjust the linkage and balance the load of access devices to avoid blocking and improve the reliability of the system.And then we simulate the algorithm to find the optimal settings of the parameters.After comparing with other existing algorithms,the result of the simulation proves that LACM is more efficient in reliability and maintains high reliability of more than 99.8%even in the ultra-dense moving scenario with 1500 field devices.Besides,this algorithm ensures that only a few signaling exchanges are required to ensure load bal-ancing,which is no more than 5 times,and less than half of the best state-of-the-art algorithm.
文摘Bank＇s business has taken many changes with the development of computer technology and economic globalization, and has faced fierce competition. Effectively countering such challenge and making profit has been the main task for the bank to survive and develop. Online bank as a new business entity, compared with the entity bank, has its own character and virtual effect that causes online bank＇s business activity totally different from common sense, which produces many new risks which never encounter in real condition. Based on the analysis of the risks online bank facing when doing business on the net, this paper brings forward to some advice on how to perfect online bank＇s business activity and improve transaction efficiency.
基金supported in part by the National Key Research and Development Program of China under Grant Number 2022YFB3104900the National Natural Science Foundation of China(U22A2042).
文摘Technologies such as Advanced Driving Assistance System(ADAS)and Vehicle-to-Everything(V2X)in Connected and Automated Vehicles(CAVs)have greatly enhanced the comfort and convenience of driving.However,the increasing levels of intelligence and connectivity also expose CAVs to severe cybersecurity risks.The vehicles,Internet of Vehicles(IoV)and the cloud servers for CAVs are vulnerable to cyberattacks.Furthermore,many standards and regulations require Original Equipment Manufacturers(OEMs)to consider potential cybersecurity threats when designing and developing CAV products.Consequently,ensuring the cybersecurity for vehicles,networks,and the cloud has become a critical issue that OEMs must address.However,the vast number of CAVs and the variety of the vehicular network make it difficult for the existing cybersecurity assessment and protection methods to satisfy the requirements of the entire vehicle,IoV and cloud.This paper reviews the cybersecurity requirements and potential vulnerabilities of CAVs,the IoV,and cloud servers.Existing cybersecurity assessment,protection and operation methods are summarized.A novel resilient cybersecurity management system is proposed to address the cybersecurity challenges of CAVs.This proposed system can orchestrate management policies and allocate resources based on the urgency of cybersecurity tasks across the vehicle,IoV and cloud,which is suitable for the rapidly evolving CAVs and the continuously expanding services.
