通信学报 ›› 2020, Vol. 41 ›› Issue (11): 99-107.doi: 10.11959/j.issn.1000-436x.2020162

• 学术论文 • 上一篇    下一篇

车载异构网络中基于前向时延的多径传输路径调度优化

赵海涛1,2,陈跃1,2,张唐伟1,2,朱奇星1,2,朱洪波1,2   

  1. 1 南京邮电大学教育部泛在网络健康服务系统工程研究中心,江苏 南京 210003
    2 南京邮电大学通信与信息工程学院,江苏 南京 210003
  • 修回日期:2020-06-14 出版日期:2020-11-25 发布日期:2020-12-19
  • 作者简介:赵海涛(1983– ),男,江苏南京人,博士,南京邮电大学教授、硕士生导师,主要研究方向为无线多媒体建模、容量预测和无线网络编码等|陈跃(1996- ),男,安徽萧县人,南京邮电大学硕士生,主要研究方向为物联网路由优化|张唐伟(1995- ),男,安徽安庆人,南京邮电大学硕士生,主要研究方向为移动边缘计算与无线系统资源分配|朱奇星(1995- ),男,江苏南京人,南京邮电大学硕士生,主要研究方向为边缘计算在车联网中的应用|朱洪波(1956- ),男,江苏扬州人,博士,南京邮电大学教授、博士生导师、博士后合作导师,主要研究方向为无线通信、物联网与下一代网络技术等
  • 基金资助:
    国家自然科学基金资助项目(61771252);江苏省自然科学基金资助项目(BK20171444);江苏省高校自然科学研究重大基金资助项目(TJ218011)

Optimization of multipath transmission path scheduling based on forward delay in vehicular heterogeneous network

Haitao ZHAO1,2,Yue CHEN1,2,Tangwei ZHANG1,2,Qixing ZHU1,2,Hongbo ZHU1,2   

  1. 1 Ministry of Education Ubiquitous Network Health Service System Engineering Research Center,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
    2 College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
  • Revised:2020-06-14 Online:2020-11-25 Published:2020-12-19
  • Supported by:
    The National Natural Science Foundation of China(61771252);The Natural Science Foundation of Jiangsu Province(BK20171444);The Natural Science Fundation of Jiangsu Higher Education Insititutions of China(TJ218011)

摘要:

为了解决多径传输中数据分组在接收端乱序从而导致传输性能大大降低问题,提出了车载异构网络中基于前向时延的多径传输路径调度优化算法。所提算法的主要思想是,根据发送方估计的前向时延和吞吐量差异,通过并发路径调度数据分组。在 NS-3 上进行了仿真实验,仿真结果表明,所提算法在重新排序缓冲区占用密度(RBD)和吞吐量的表现都优于其他算法,接收端的数据分组乱序问题明显降低,系统的总吞吐量和网络利用率得到了提高。

关键词: 车载异构网络, 多径传输, 路径优化, 前向时延, 无序分组

Abstract:

In order to solve the problem that the data packets were out of order at the receiving end in the multipath transmission,which greatly reduced the transmission performance,an optimization algorithm was proposed for multipath transmission path scheduling based on forward delay in the vehicle heterogeneous network.The main idea of the proposed algorithm was to schedule data packets through a concurrent path according to the forward delay and throughput difference estimated by the sender.A simulation experiment was carried out on NS-3.The simulation results show that compared with the previous algorithm,the proposed algorithm has better performance than other algorithms in reorder-buffer-occupancy density (RBD) and throughput.The problem of out-of-order data packets at the receiving end is significantly reduced,and the total system throughput and network utilization have been improved.

Key words: vehicular heterogeneous network, multipath transmission, path optimization, forward delay, unordered grouping

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