基于路侧单元协助的VANET异步多信道MAC协议研究

摘要

主要提出了一种基于路侧单元（RSU）协助的车载自组网（VANET）异步多信道MAC协议。该协议不需要严格的时间同步，通过RSU协助节点进行业务信道预约，可实现多个业务信道上同时进行数据传输，不仅提高了业务信道吞吐量，而且有效地避免了多信道隐藏终端问题以及错失接收方问题。%A RSU-assisted asynchronous multi-channel MAC (ARAMMAC) protocol for VANET was proposed in this paper. ARAMMAC does not need rigid time synchronization. It supports simultaneous data transmissions on different service channels (SCHs) because it reserves channel by means of road side unit (RSU) assistance node. ARAMMAC not only increases the throughput of SCHs, but also effectively solves the problems including multi-channel hidden terminal and missing receiver.