【摘要】 多数车联网(Vehicle Ad hoc Networks,VANETs)是依据IEEE 802. 11p和专用短距离通信(Dynamic Short Range Communication,DSRC)标准。随着基于LTE蜂窝网络标准的出现,研究人员开始关注基于LTE的VANET结构。然而,由于采用了集中结构,基于LTE系统可能需要重要网络资源支持车-车间通信(Vehicle-to-Vehcile,V2V)。为此,针对VANET的安全消息传输,提出基于区的设备-对-设备(Device-to-Device,D2D)结构的安全消息传播协议(LTE cluster-based D2D architecture for VANET Safety Message Dissemination protocol,LDMD)。LDMD协议采用新的车辆发现技术,并引用基于区的LTE的D2D结构,进而提高数据包传递率。仿真结果表明,相比于3GPP ProSe协议,提出的LDMD协议降低了端到端时延和信号开销,并提高了数据包传递率。更多还原

【Abstract】 Most of the work in the area of vehicular ad hoc network( VANET) has concentrated on the IEEE 802. 11 p and the DSRC standards. With the emergence of the advanced LTE-based cellular network standard,researchers are now concentrating on the LTE-based VANET architecture. However,due to the use of the centralized architecture,an LTE-based system may re-quire significant network resources to support vehicle-to-vehicle( V2V) communications. In this paper,LTE cluster-based D2D architecture for VANET Safety Message Dissemination protocol( LDMD) is proposed. we propose a new vehicle discovery technique and a LTE cluster-based device-to-device( D2D) architecture to achieve high packet delivery ratio for the safety services in a vehicular network. Simulations results shows that the proposed algorithm reduces the end-to-end delay and signaling overhead as well as improve the data packet delivery ratio( DPDR) compared to the existing 3 GPP Pro Se technique for vehicular safety applications.更多还原