In-Vehicle Communication Network Modeling and Simulation Environment - A Tool to Study the Vehicle Network Architecture and Vehicle EE System Architecture

2002 ◽  
Author(s):  
Yibing Dong ◽  
Salim Momin
2018 ◽  
Vol 8 (11) ◽  
pp. 2071 ◽  
Author(s):  
Shiyi Jin ◽  
Mengzhuo Liu ◽  
Yujing Wu ◽  
Yihu Xu ◽  
Jingnan Zhang ◽  
...  

FlexRay is becoming the in-vehicle communication network of the next generation. In this study, the main contents are the FlexRay network static segment scheduling algorithm and optimization strategy, improve the scheduling efficiency of vehicle network and optimize the performance of communication network. The FlexRay static segment characteristic was first analyzed, then selected bandwidth utilization as the performance metrics to scheduling problem. A signal packing method is proposed based on Next Fit Decreasing (NFD) algorithm. Then Frame ID (FID) multiplexing method was used to minimize the number of FIDs. Finally, experimental simulation by CANoe. FlexRay software, that shows the model can quickly obtain the message schedule of each node, effectively control the message payload size and reduced bus payload by 16.3%, the number of FID drops 53.8% while improving bandwidth utilization by 32.8%.


Author(s):  
Ming-Chiao Chen ◽  
Teng-Wen Chang

A vehicular network organizes and connects vehicles with each other, and with mobile and fixed-locations resources. This chapter discusses the architectures in the vehicular network environment. The authors introduce the overview of in-vehicle and out-vehicle network architectures. An automobile in an in-vehicle network adopts four vehicle bus protocols, CAN (Controller Area Network), LIN (Local Interconnect Network), MOST (Media Oriented Systems Transport) and FlexRay. However, these protocols cannot intercommunicate with each other. Therefore, the OSEK operating system is designed as standard software architecture for the various ECUs (Electronic Control Units). In the out-vehicle network, the OBU (On Board Unit) in the automobile can communicate with the infrastructure via the Internet. The authors discuss next-generation vehicular network architecture, the modern in-vehicle networks, on-board computers and the Internet, mobile telecommunications and telematics applications in the ground vehicles, and finally, we introduce future desired features. This chapter discusses the architectures in vehicular network environment. The first section introduces the overview of in-vehicle and out-vehicle network architectures. The next section describes in-vehicle network architecture for disaster communication network by combining various automotive bus protocols. The third section describes the out-vehicle network architecture for disaster communication network by combining various wireless LANs. The last section discusses next-generation vehicular network architecture, the modern in-vehicle networks, on-board computers and the Internet, mobile telecommunications and telematics applications in the ground vehicles, and introduces future desired features.


Author(s):  
Zsombor Petho ◽  
Intiyaz Khan ◽  
Árpád Torok

AbstractThis article investigates cybersecurity issues related to in-vehicle communication networks. In-vehicle communication network security is evaluated based on the protection characteristics of the network components and the topology of the network. The automotive communication network topologies are represented as undirected weighted graphs, and their vulnerability is estimated based on the specific characteristics of the generated graph. Thirteen different vehicle models have been investigated to compare the vulnerability levels of the in-vehicle network using the Dijkstra's shortest route algorithm. An important advantage of the proposed method is that it is in accordance with the most relevant security evaluation models. On the other hand, the newly introduced approach considers the Secure-by-Design concept principles.


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