摘要：AbstractBased on VANETs (Vehicle Ad-hoc Networks), a stable, reliable and low delay wireless network access environment is an inevitable element of vehicle safety applications. The IEEE 802.11p is a specially designed protocol for ITS (Intelligent Transportation Systems) for V2V and V2I communication. It provides 10MHz channel bandwidth and up to 27-Mbps data transmission rate. This paper analyzes the theoretical throughput and delay limit of the 802.11p protocol. Considering PLR (Packet Loss Rate) and delay of VANETs, we analyzed the theoretical highway capacity upper limit of 802.11p for V2V communication. The results show that 802.11p communication technology can increase highway capacity. If all of the vehicles are equipped with 802.11p communication technology, the increase in highway capacity is about 491 percent.
