摘要
针对现有车辆自组织网络（VANET）存在的安全隐患,提出一种多载波的跨层安全传输协议.该协议包括网络层的安全路由协议和物理层的安全频率分集接收两部分：一方面限制不相关节点对于信息传输路由的知情权;另一方面在物理层的分集接收过程中利用信道衰落特征的差异性使合法接收节点和窃听节点存在较大的信号解调性能差异,其所用的信道状态信息源于网络层向物理层的跨层透传.理论分析和系统仿真结果表明,提出的传输协议在车辆规模为1000～2000辆时,瞬时窃听节点数仅为3左右,相对于现有方法能有效地降低窃听节点数量.
To prevent eavesdropping in Orthogonal Frequency Division Multiplexing Vehicular Ad-Hoe Network （OFDM- VANET）, a cross-layer security routing protocol was presented in this paper, which includes two parts： secure routing protocol and secure frequency diversity. On the one hand, the eavesdropping of the unrelated node was prevented, by limiting its knowledge on information transmission routing. On the other hand, in the diversity of physical layer receiving, the fading difference among wireless channels, which was transparently transmitted from network layer, was utilized to identify the destination node and eavesdropping nodes. The theory analysis and simulation results illustrate that, when the vehicle on a scale of 1 000 to 2 000, the protocol makes instantaneous eavesdroppers only about 3. Compared to the conventional methods, it can effectively reduce the number of eavesdroppers.
出处
《计算机应用》
CSCD
北大核心
2014年第5期1232-1235,1250,共5页
journal of Computer Applications
基金
国家自然科学基金资助项目(61171108)
忻州师范学院院级基金资助项目(201016)
忻州师范学院院级教学改革研究项目(JG201206
JG201311)
忻州师范学院<通信原理>重点课程建设项目
关键词
正交频分复用-车辆自组织网络
信息安全
传输协议
跨层
信道状态
Orthogonal Frequency Division Multiplexing Vehicular Ad-Hoe Network （OFDM-VANET）
information security
transmission protocol
cross-layer
channel state
