Physical layer security has attracted lots of attention with the expansion of wireless devices to the edge networks in recent years.Due to limited authentication mechanisms,MAC spoofing attack,also known as the identi...Physical layer security has attracted lots of attention with the expansion of wireless devices to the edge networks in recent years.Due to limited authentication mechanisms,MAC spoofing attack,also known as the identity attack,threatens wireless systems.In this paper,we study a new type of MAC spoofing attack,the virtual MAC spoofing attack,in a tight environment with strong spatial similarities,which can create multiple counterfeits entities powered by the virtualization technologies to interrupt regular services.We develop a system to effectively detect such virtual MAC spoofing attacks via the deep learning method as a countermeasure.A deep convolutional neural network is constructed to analyze signal level information extracted from Channel State Information(CSI)between the communication peers to provide additional authentication protection at the physical layer.A significant merit of the proposed detection system is that this system can distinguish two different devices even at the same location,which was not well addressed by the existing approaches.Our extensive experimental results demonstrate the effectiveness of the system with an average detection accuracy of 95%,even when devices are co-located.展开更多
传感器节点沿树状多跳路径逐级向Sink转发数据是无线传感器网络的主要业务模式之一。针对此类业务,该文的EBRI-MAC(Energy-efficient MAC protocol Based on Routing Information)协议提出一种对应树状路由转发关系,由父节点与子节点构...传感器节点沿树状多跳路径逐级向Sink转发数据是无线传感器网络的主要业务模式之一。针对此类业务,该文的EBRI-MAC(Energy-efficient MAC protocol Based on Routing Information)协议提出一种对应树状路由转发关系,由父节点与子节点构成虚拟群的思想;并设计了连锁邀请与CSMA/CA结合的信道接入机制以及基于虚拟群同步的周期休眠机制,以达到节能的目的。结合节点能耗因素,定义了能量有效性的性能参数,并对EBRI-MAC的能量有效性进行理论分析。通过ns-2仿真结果表明网络业务时间相关性较强时,EBRI-MAC的能量有效性优于IEEE802.11DCF和S-MAC。展开更多
随着医院信息化的飞速发展,如何保障网络系统的安全性和防止隐私数据泄露成为当前面临的重大挑战。本文针对MAC地址泛洪攻击深入研究,提出医院恶意MAC地址防洪攻击防范方案以提高医院网络的可靠性,并基于MNSS(Medical Network System Si...随着医院信息化的飞速发展,如何保障网络系统的安全性和防止隐私数据泄露成为当前面临的重大挑战。本文针对MAC地址泛洪攻击深入研究,提出医院恶意MAC地址防洪攻击防范方案以提高医院网络的可靠性,并基于MNSS(Medical Network System Simulator)仿真软件搭建实验平台进行虚拟仿真。结果证明该方案能够有效预防MAC地址防洪攻击,保证医院网络的安全性。展开更多
针对组网导航系统(networked navigation systems,NNSs)中节点高速移动、能量受限及通信时滞的问题,融合了基于移动汇聚节点的交叉路由树构建及链式分簇相结合的路由协议(cross routing tree construction based on mobile sink and cha...针对组网导航系统(networked navigation systems,NNSs)中节点高速移动、能量受限及通信时滞的问题,融合了基于移动汇聚节点的交叉路由树构建及链式分簇相结合的路由协议(cross routing tree construction based on mobile sink and chain clustering,CRTCC),设计了一种基于节点分级的跨层媒介访问控制协议(medium access control protocol based on graded nodes,GN-MAC)。GN-MAC采取了基于竞争的媒介访问方式,结合CRTCC协议特点定义GN-MAC包格式并完成具有多级别节点的自适应虚拟分簇,同时设计了改进型节点移动性检测算法,作出了最优簇间切换决策,提出了基于优先级的竞争机制以及多信道通信机制。最后通过算例仿真,验证了GN-MAC在节点高速移动和多移动节点情况下,时滞和能耗得到了有效的控制。展开更多
The Mac-Millan's equation for the non-linear non-holongmic system in one order is derived by using only principle of differential variation of Jourdain. Therefore definition of Niu Qinping for the virtual displace...The Mac-Millan's equation for the non-linear non-holongmic system in one order is derived by using only principle of differential variation of Jourdain. Therefore definition of Niu Qinping for the virtual displacentent is unnecessary. This is the natural deduetion of the method in this paper and so with the non-linear and non holonomic system in high order.展开更多
文摘Physical layer security has attracted lots of attention with the expansion of wireless devices to the edge networks in recent years.Due to limited authentication mechanisms,MAC spoofing attack,also known as the identity attack,threatens wireless systems.In this paper,we study a new type of MAC spoofing attack,the virtual MAC spoofing attack,in a tight environment with strong spatial similarities,which can create multiple counterfeits entities powered by the virtualization technologies to interrupt regular services.We develop a system to effectively detect such virtual MAC spoofing attacks via the deep learning method as a countermeasure.A deep convolutional neural network is constructed to analyze signal level information extracted from Channel State Information(CSI)between the communication peers to provide additional authentication protection at the physical layer.A significant merit of the proposed detection system is that this system can distinguish two different devices even at the same location,which was not well addressed by the existing approaches.Our extensive experimental results demonstrate the effectiveness of the system with an average detection accuracy of 95%,even when devices are co-located.
文摘传感器节点沿树状多跳路径逐级向Sink转发数据是无线传感器网络的主要业务模式之一。针对此类业务,该文的EBRI-MAC(Energy-efficient MAC protocol Based on Routing Information)协议提出一种对应树状路由转发关系,由父节点与子节点构成虚拟群的思想;并设计了连锁邀请与CSMA/CA结合的信道接入机制以及基于虚拟群同步的周期休眠机制,以达到节能的目的。结合节点能耗因素,定义了能量有效性的性能参数,并对EBRI-MAC的能量有效性进行理论分析。通过ns-2仿真结果表明网络业务时间相关性较强时,EBRI-MAC的能量有效性优于IEEE802.11DCF和S-MAC。
文摘随着医院信息化的飞速发展,如何保障网络系统的安全性和防止隐私数据泄露成为当前面临的重大挑战。本文针对MAC地址泛洪攻击深入研究,提出医院恶意MAC地址防洪攻击防范方案以提高医院网络的可靠性,并基于MNSS(Medical Network System Simulator)仿真软件搭建实验平台进行虚拟仿真。结果证明该方案能够有效预防MAC地址防洪攻击,保证医院网络的安全性。
文摘针对组网导航系统(networked navigation systems,NNSs)中节点高速移动、能量受限及通信时滞的问题,融合了基于移动汇聚节点的交叉路由树构建及链式分簇相结合的路由协议(cross routing tree construction based on mobile sink and chain clustering,CRTCC),设计了一种基于节点分级的跨层媒介访问控制协议(medium access control protocol based on graded nodes,GN-MAC)。GN-MAC采取了基于竞争的媒介访问方式,结合CRTCC协议特点定义GN-MAC包格式并完成具有多级别节点的自适应虚拟分簇,同时设计了改进型节点移动性检测算法,作出了最优簇间切换决策,提出了基于优先级的竞争机制以及多信道通信机制。最后通过算例仿真,验证了GN-MAC在节点高速移动和多移动节点情况下,时滞和能耗得到了有效的控制。
文摘The Mac-Millan's equation for the non-linear non-holongmic system in one order is derived by using only principle of differential variation of Jourdain. Therefore definition of Niu Qinping for the virtual displacentent is unnecessary. This is the natural deduetion of the method in this paper and so with the non-linear and non holonomic system in high order.
