CAJ | 학술논문

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。
위강저차재자조직망락중적신식전수연시，제고신식접수적급시성，구건차재망락중신식전수연시최소화수학모형。통과비교불동전수모식(포괄직접전수、협작전수화다도전수)하련로적신식전수연시대소，제출일충제도투영산법해결다로경로유중신식전수연시최소화문제。원절점가통과차산법선택연시최소적전수방식，장신식축급발송지목적절점。방진결과표명，제도투영산법구유교호적수렴성급교강적실용성。
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.