5.8 GHz DSRC packet communication system for ITS services

In this paper, we introduce a 5.8 GHz DSRC (dedicated short range communication) packet communication system which has been developed by ETRI. 5.8 GHz DSRC packet communication systems are under deveolpment worldwide and it will be widely applied to ITS (intelligent transportation system) services. We discuss the basic requirements of the DSRC communication system and system design specification to meet the requirements with regard to the physical layer, MAC (media acces control) layer, LLC (logical link layer) layer and application layer. DSRC packet communication systems consist of a micro-processor block, baseband packet modem block and an RF block. The microprocessor block handles MAC and application SW, the baseband packet modem transmits data up to 2.048 Mbps and recovers the received data from the RF block. The RF block has a function for ASK modulation and demodulation. We describe packet frame architecture and packet communication procedures for link setup and normal communication.