차량통신시스템에서의 멀티홉 전송 방법

Abstract

Abstract Vehicular communication is one of main convergence technologies which combines information and communication technology (ICT) with vehicle and road industries. In general, vehicular communication adopts IEEE 802.11p standard which is commonly referred as wireless access in vehicular environments (WAVE). In this paper, we investigate a multi-hop communication scheme for IEEE 802.11p based communication systems which support both vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communications. First, we briefly overview the performance of IEEE 802.11p based communication systems. Then, a multi-hop communication scheme is introduced for both broadcast and unicast. The performance of proposed scheme is presented via experimental measurements. Key Words : Vehicular communication, WAVE, multi-hop communication, broadcast, unicast Ⅰ. Introduction Vehicular communications have been considered as one of the attractive research areas by applying communication technologies to the road. To apply vehicular communication technologies with one common type, the standards for vehicular communications have been developed in several institutions such as IEEE, ETSI and ISO. Among them IEEE 802.11p and IEEE 1609.X, which are commonly referred as wireless access in vehicular environments (WAVE), are widely accepted as a common standard for vehicular communications. IEEE 802.11p specifies MAC/PHY layer standard in 5.9GHz frequency band by modifying IEEE 802.11 a/b/g