中文摘要：

为了对基于802．11p的车联网传输协议研究中的关键问题进行有序评述，提出了一种车联网VANET网络体系结构参考模型。以分层模型为线索对车联网传输协议研究的关键问题及其研究进展进行了述评，包括移动性模型、路由算法、及拥塞控制3个方面。在分层模型的指导下指出了车联网传输协议研究的几个切入点，并作出了一定的深入分析，同时给出了相应的研究思路。该领域的突破性研究进展将有助于车联网网络技术走向实用，具有一定的理论意义及应用前景。

英文摘要：

To comment on the key technologies of VANET based on 802. llp logically and efficiently, one VANET architecture model, in which all layers are jointly studied, instead of treating network layers separately is proposed in the literature. This model can be used to achieve an efficient tradeoff among the reliability, low-delay, and fairness when messages are disseminated in the VANET. Then based on the layered model, the state of arts of VANET is introduced, including the aspects of vehicular node mobility, routing protocol, congesting control, and etc. Further more, some hot topics of VANET are discussed in detail. Some trends of VANET.development are mentioned as well. Finally, some novel research ideas are proposed. These work should be applied to a useful guide to the commercialization of the VANET network.