Service Quality Management for the ITS Mobile Wireless Multipath Telecommunications Subsystems

Guaranteed quality of telecommunication service and wide area coverage are typical requirements of the ITS (Intelligent Transport Systems) applications.  Extensive range of wireless data services with reasonable coverage is offered by public wireless data services providers, however, mostly no guaranteed relevant range of quality and security has been available. As ITS services require cost-effectively solution, as well, requirements can be resolved by seamless switched combination of public and private services selected in accordance to agreed criteria realized by implemented decision processes. Specific situation is identified in case of the C2I (Car to Infrastructure) and C2C (Car to Car) communication namely if the vehicle on board unit is interconnected with the vehicle CAN (Controlled Area Network) based network.  Such dynamically developing telecommunications solution touching public networks significantly increase potential of dangerous intruders´ attacks. That is also the main reason why relevant telecommunications security support is understood as one of the crucial part of the ITS telecommunications solution. System security is discusses in detail in this paper and security performance indicators are defined in context of already adopted telematics and telecommunications performance indicators.