Journal of Computer Applications ›› 2019, Vol. 39 ›› Issue (3): 829-833.DOI: 10.11772/j.issn.1001-9081.2018071492

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Optimization of data retransmission algorithm in information centric networking

XIN Yingying, LIU Xiaojuan, FANG Chunlin, LUO Huan   

  1. College of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, China
  • Received:2018-07-19 Revised:2018-08-20 Online:2019-03-10 Published:2019-03-11

信息中心网络内数据重传算法的优化

辛营营, 刘晓娟, 方春林, 罗欢   

  1. 兰州交通大学 电子与信息工程学院, 兰州 730070
  • 通讯作者: 刘晓娟
  • 作者简介:辛营营(1994-),女,河北沧州人,硕士研究生,主要研究方向:通信与信息系统理论及仿真;刘晓娟(1964-),女,甘肃天水人,教授,博士,主要研究方向:智能交通与信息系统工程;方春林(1990-),男,甘肃庆阳人,硕士研究生,主要研究方向:智能交通与信息系统工程;罗欢(1993-),男,内蒙通辽人,硕士研究生,主要研究方向:城市轨道交通车地通信。

Abstract:

Aiming at the problem of low network bandwidth utilization rate of the original data recovery mechanism in Information Centric Networking (ICN), a Network Coding based Real-time Data Retransmission (NC-RDR) algorithm was proposed. Firstly, the lost data packets in the network were counted according to the real-time status of the network. Then, network coding was combined into ICN, and the statistical lost data packets were combinatorially coded. Finally, the encoded data packets were retransmitted to the receiver. The simulation results show that compared with NC-MDR (Network Coding based Multicast Data Recovery) algorithm, in the transmission bandwidth aspect, the average number of transmissions was reduced by about 30%. In ICN, the proposed algorithm can effectively reduce the number of data re-transmissions, improveing network transmission efficiency.

Key words: Information Centric Networking (ICN), network coding, multicast transmission, data retransmission, Network Coding based Real-time Data Retransmission algorithm (NC-RDR)

摘要:

对于信息中心网络(ICN)中原始数据恢复机制的网络带宽利用率低下的问题,提出一种基于网络编码的实时数据重传(NC-RDR)算法。首先,根据网络的实时状态对网络中丢失的数据包进行统计;然后,将网络编码结合到信息中心网络中,对统计的丢失的数据包进行组合编码;最后,将编码后的数据包重传发送给接收端。对提出的方案进行分析,仿真结果表明,与基于网络编码的多播数据恢复(NC-MDR)算法相比,在传输带宽(平均传输次数)方面,降低了约30%,因此,在信息中心网络中,该算法能有效地减少网络重传次数,提高网络传输效率。

关键词: 信息中心网络, 网络编码, 多播传输, 数据重传, 基于网络编码的实时数据重传算法

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