摘要： 车载异构网络之间需要利用网关进行数据交换,数据封装方法关系到网络协议转发效率,决定了网关的实时性和可靠性。为提高网关数据转发效率,提出一种新的CAN/FlexRay网络网关数据封装方法。将CAN和FlexRay网络中通过网关的信号封装到帧,使得每个信号帧中包含更多的有效信号,提高数据利用率,同时使用改进的BCBFD_LFS算法确定最佳静态时隙,减少消息处理时间。实验结果表明,该方法能提高车载异构网络中的消息可调度性、网络带宽利用率以及网关的数据转发能力。

关键词: 车载异构网络, 网关, 数据封装, 数据转发, 消息可调度性

Abstract: It is unavoidable that Vehicular Heterogeneous Network(VHN) need to exchange data by a gateway between each other.The data encapsulation method between heterogeneous networks is important for improving network protocol forwarding efficiency and determines the performance and reliability of the gateway.To improve the efficiency of gateway data forwarding,this paper proposes a new CAN/FlexRay network gateway data encapsulation method.Signals passing through the gateway in CAN and FlexRay networks are encapsulated into frames to make each signal frame contain more effective signals and improve the utilization of data.At the same time,it refines the BCBFD_LFS algorithm to confirm the optimum static time slot and decreases the time of operating message.Experimental result shows that the new method can improve the schedulability of messages,the network bandwidth utilization,and the data forwarding capability of gateway in VHN.

Key words: Vehicular Heterogeneous Network(VHN), gateway, data encapsulation, data forwarding, message schedulability

中图分类号: 

• TP393.01