可通信时段感知的车载容迟网络路边基站数据传输决策方法

项目名称： 可通信时段感知的车载容迟网络路边基站数据传输决策方法

项目编号： No.61201157

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 闫中江

作者单位： 西北工业大学

项目金额： 27万元

中文摘要： 车辆网络是物联网的重要组成部分。车载容迟网络中路边基站(RSU)数据传输决策的优劣决定了RSU数据传输的吞吐量、时延等网络性能。可通信时段是影响RSU数据传输决策的重要参数，而现有感知该参数的多个相互连通RSU的数据传输决策，并不能被特例化为单RSU的数据传输决策，因此提出并研究可通信时段感知的单RSU数据传输决策的新问题。分析问题的系统模型，拟提出可通信时段到达过程的新概念并建立RSU数据传输匹配模型；前者的密度可刻画车载容迟网络的基本特征，连续时段的比例可表征RSU向车辆传输数据的系统最大吞吐量，后者则可分析RSU数据传输时间与数据类型、目的车辆的匹配关系。提出着重研究车辆稀疏场景中最小化RSU开销，和车辆密集场景中最大化RSU收益的数据传输决策问题，拟结合最优止步理论和二部图匹配理论，提出制定最优单RSU数据传输决策的新方法，为车载容迟网络的部署和应用提供理论指导。

中文关键词： 最优止步；3匹配；流网络；可通信时段感知；车载容迟网络

英文摘要： The vehicular network is one important component of the Internet of Things. The qualities of the traffic delivering strategies for the RoadSide Units (RSUs), in vehicular delay tolerant networks (VDTNs), determine the performances of the RSUs, such as throughput, delay, etc. The contact durations, defined as the periods when the vehicles pass through the wireless communication ranges of the RSUs, can significantly affect the traffic delivering strategy for the RSUs. However, the existing traffic delivering strategies, with conctact duration awareness, for multiple connected RSUs, can not be specialized to the strategies for a RSU. Motivated by this, we propose and study the traffic delivering problem for the RSU with contact duration awareness in this project. By analyzing the system model two outcomes are expected, which are the new concept, the arrival process of the contact durations, and the traffic delivering matching model for the RSU. The density of the former is expected to characterize the vehicular delay tolerant networks, and the ratio of the continuous contact durations of the former is expected to characterize the maximum throughput of the communication system, consisting of the RSU and passing-by vehicles. The later is used to analyze the matching relationships of traffic delivering times, traffic

英文关键词： optimal stopping；triple matching；flow network；contact duration awareness；vehicular delay tolerant networks