网络数据传输多路径优化选择仿真研究

Simulation Research on Multi Path Optimization of Network Data Transmission

网络数据传输多路径选择,可以提高数据传输的效率、扩展覆盖范围。由于网络数据包容易出现频繁碰撞现象,使得各路径上的信息量分布不均匀,但是传统方法以各路径上的信息量大小为依据进行多路径选择,不能对每条路径上的信息量进行均衡调整,出现路径过度拥塞或过度空闲的状态,降低了多路径选择的准确性。提出一种改进多条件约束的网络数据传输多路径优化选择方法。首先消除部分从源节点到目的节点不可行的路径,分层搜索出到达最终目的结点的机会较大的节点,采用Vornon单元划分的思想求解总传输能耗和节点平均负载,融合于具有感觉特征的蚁群思想,依据网络中路径上的全部蚂蚁信息量高低,计算出选取路径概率的大小,动态地调整各路经上的信息量分布,在此基础上完成网络中动态多路径选择。仿真结果表明,改进方法显著地提升网络的整体周期,多路径选择结果较为准确。

This article proposes a method for multi - path optimization selection of network data transmission based on modified multi - conditions constraint. Firstly, the research eliminated parts of infeasible path from originating node to destination node and hierarchically searched out the node having bigger chance to achieve ultimate purpose node. Then used theory of Vornon unit division to solve total energy consumption of transmission and average load of node. Moreover, the research worked out the probability of selection path according to value of all ant information quantity on each path integrated with the thought of ant colony with feel feature and adjusted distribution of information quantity on each path dynamically. Finally, we completed the multi - path selection based on that. Simulation results show that the modified method can improve overall period of network apparently. The result of multi - path selection is more accurate.