车载自组织网络中的最小延时链路调度算法

摘要

In order to reduce the information transmission delay in the vehicularad ad hoc networks and improve the timeliness of re-ceiving information,the information transmission delay minimization model is made,the link delay variation in different transmission modes(including direct transmission,cooperative transmission,multi-hop transmission)are compared,and then a gradient proj ec-tion algorithm is proposed to solve the problem of the information transmission delay minimization in the multipath routing.Using the algorithm,the source node can choose a minimum delay transmission mode to send the information to the destination node.The simulation results show that the algorithm has good convergence and strong practicability.%为降低车载自组织网络中的信息传输延时，提高信息接收的及时性，构建车载网络中信息传输延时最小化数学模型。通过比较不同传输模式(包括直接传输、协作传输和多跳传输)下链路的信息传输延时大小，提出一种梯度投影算法解决多路径路由中信息传输延时最小化问题。源节点可通过此算法选择延时最小的传输方式，将信息逐级发送至目的节点。仿真结果表明，梯度投影算法具有较好的收敛性及较强的实用性。