Project Proposal Increasing Broadcast Reliability in Vehicular Ad Hoc Networks

Broadcast messages will play a large role in Vehicular Ad Hoc Networks (VANET). A large portion of the messages sent in a vehicular network will be broadcast messages. Broadcast messages may play a larger role than the use of unicast messages in VANETs. Some of the uses for broadcast messages are: sending emergency warning messages, transmitting state information to other vehicles, broadcasting aggregate data, address resolution, and determining routes. The FCC in the United States reserved 75 MHz of bandwidth in the range 5.850 to 5.925 GHz to be used for vehicle-to-vehicle and vehicle-toroadside communication. The 5.9 GHz spectrum was termed Dedicated Short Range Communication (DSRC) and is to be based on a variant of 802.11a. The transmission range of the vehicles in DSRC is expected to be approximately 300m.