TPEG traffic information systems could get a new boost by the possibility to encrypt traffic messages and thus making them receivable by specific target groups. OEMs and service providers could use the encryption to implement premium services.
TPEG stands for Transport Protocol Experts Group and a protocol for the transmission of traffic-related data through digital wireless channels. Developed to escape the bandwidth bottleneck associated with analog broadcast traffic data systems such as RDS, TPEG is designed to transfer much greater data amounts, and since it typically is radioed via technologies that allow a higher geographical fragmentation it can be used to carry more specific data — about free parking space in a town or a district, for instance. These data could be fed forward into a navigation system.
The Fraunhofer Institute for Integrated Circuits (Fraunhofer IIS, Erlangen, Germany) now has developed an AES-based encryption module for the TPEG protocol. The data encryption makes it possible to develop new business models for the data broadcasted. Automotive OEMs, for instance, can implement premium services for customers of high-end models, or service provider can implement charge-based information offerings. In any case, the protocol provides for unencrypted transmission of safety-related traffic messages.
The system will be demonstrated at the International Broadcasting Convention (IBC) in Amsterdam later this month.
Courtesy: Automotive Design-Europe.