ABSTRACT:
In 1999, the FCC allocated 75MHz of spectrum at 5.850-5.925 GHz, above the UNII band, for a "wireless link to transfer information between vehicles and roadside systems". The FCC turned the standards development over to the ITS (Intelligent Transportation Systems) industry and ASTM (American Society for Testing and Materials). The ASTM DSRC (Dedicated Short Range Communications) committee completed a selection process and decided on a system based on 802.11a in August 2001.
ISO is also developing related ITS communication standards in TC204 WG16. The ASTM MAC and PHY standard for 5.9GHz wireless communication is referred to as CALM5 (Communication Architecture for Long and Medium range at 5GHz) in WG16.
This tutorial will provide information on ITS DSRC applications, the status of the ASTM and ISO standards, and the relationship to the IEEE 802.11a standard. The purpose is to inform 802 members of an emerging market for wireless communication, and provide an update on related standards activity in other bodies.