Reliable Communication of Time- and Security-Sensitive Information over a Single Combat Vehicle Network

• Main Author: Nilsson, Håkan
• Format: Others
• Language: English
• Published: Linköpings universitet, Kommunikationssystem 2019
• Subjects: Vehicle Networks; Quality of Service; Ethernet; Wired Networks; Communication Systems; Kommunikationssystem
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-162444

A common trend, in general as well as in the field of combat vehicles, is the rapidly increasing demand for data network capacity and even more in transferred data. To handle this increased demand, different countries with their armed forces and equipment manufacturers evaluate methods to increase the data transmission capacity in combat vehicles. The different types of transmitted data are of different criticality and have different security demands. An easy solution to this is to have separated networks for each type of traffic, but that is quite expensive and uses a lot of hardware. This thesis focuses on a different solution, with a shared network for all types of data transmissions. This is done by evaluating different types of data networks and add-on protocols and then testing the networks practically with varying transmission rates. In the thesis, all the practical testing is done with data networks according to the Ethernet standard, which is the standard evaluated with a throughput that is high enough for the use case. Ethernet as a standard is not suitable for critical data traffic and therefore add-on protocols for Ethernet to optimize the system for critical data traffic are tested. With these optimizations made, Ethernet can be considered more suitable for critical traffic, but this depends entirely on the system requirements.