Poster: Receiver-Driven Semi-Broadcast for Vehicular Applications

Broadcasting/multicasting offers a potential benefit for delay-sensitive applications in vehicular networks, since information could be delivered to multiple receivers simultaneously by a single transmission. However, conventional broadcasting schemes suffer from a problem of reliability, since they cannot go along with ACK and RTS/CTS mechanism at the MAC layer. In this paper, we design a novel receiver-driven semi-broadcast scheme for vehicular applications, where receivers request broadcasting to their neighbors and data is broadcasted as a response. Via the simulation study, it is shown that the proposed scheme allows to 1) receive data without contention, 2) control contention, and 3) mitigate hidden node effects.