无线Mesh网络中网络编码的文件共享模型

The File Sharing Model Based on Network Coding for Wireless Mesh Network

网络编码的基本思想是网络节点不仅参与数据转发,还参与数据处理,可大幅提高网络性能。传统文件传输系统存在文件分发时间的"瓶颈"问题,为此,提出一种在无线Mesh网络中网络编码的简化文件共享模型,采用理论分析和实验仿真的方法,研究节点间的4种合作机制。结果表明,在总分发时间上,基于网络编码转发机制比无网络编码的转发机制平均减少11.67%,显著地降低了文件传输系统的分发时间,从而提高了网络的吞吐量。

The basic concept of network coding is that intermediate nodes in the network not only forward but also process the incoming information flows, which results in significant benefit. Traditional file transmission system has bottleneck disadvantage in file service time, thus, this paper introduces a simplified network coded file sharing model for wireless Mesh network, and researches on four cooperation strategies of nodes with the method of theoretical analysis and experimental simulation. The result shows that network coded forwarding schemes outperform non - coding schemes, reducing by averagely 11.67% in service time, which improves the throughput.