基于多属性和群组决策的海上移动节点网络选择方法

Marine Mobile Node Network Selection Method Based on Multi-attribute and Group Decision

针对海上异构无线网络因节点移动性特征造成的多网络覆盖下最优网络选择困难的问题,从克服节点移动性因素影响、确保决策权值客观合理的角度出发,提出了一种新的基于多属性和群组决策的海上移动节点网络选择方法。该方法采用层次分析(Analytic Hierarchy Process,AHP)法和熵权(Entropy Weight,EW)法分别作为主观权重方法和客观权重方法,并引用位置权重,降低移动性因素影响,采用群组决策进行权重综合,使决策权值更加客观合理。仿真结果表明,所提方法能够有效提升网络传输速率和传输质量,相对于基于AHP法、EW法以及距离的网络选择方法,具有更优的网络传输时效性和稳定性。

In order to overcome the influence of node mobility factors and ensure the objective and reasonable decision weights,a new method is proposed for selecting the optimal network of heterogeneous wireless networks at sea based on multi-attribute and group decision,aiming at the difficulty of selecting the optimal network under multi-network coverage caused by node mobility characteristics.This method uses Analytic Hierarchy Process(AHP)and Entropy Weight(EW)method as subjective weight method and objective weight method respectively,and uses position weight to reduce the influence of mobility factors.Group decision is used for weight synthesis,so that the decision weight value is more objective and reasonable.Simulation results show that the proposed method can effectively improve network transmission rate and transmission quality,and has better timeliness and stability than the network selection methods based on analytic hierarchy process,entropy weight method and distance.