基于整体映射机制的移动无线传感网区域收敛算法

Regional Convergence Algorithm for Mobile Wireless Sensor Networks Based on Global Mapping Mechanism

为解决节点收敛次数较高且收敛时长难以控制等不足,提出了一种基于整体映射机制的移动无线传感网区域收敛算法。首先,根据节点干涉过程中发射信噪比的变化情况,设计了一种新的区域收敛机制,利用发射信噪比动态调整节点覆盖区域,以降低节点干涉现象,提升网络收敛能力。然后,采用时间退避方法对信号发射过程的时间窗口进行动态调节,以改善信号发射过程中存在的碰撞现象,有效降低网络收敛时间和节点收敛次数。由仿真实验结果可知,相较于移动无线传感网区域收敛领域中常用的逻辑模糊可信算法和网络寿命节约评估算法,本算法具有更低的网络收敛时间和节点收敛次数。

In order to solve the shortcomings of high node convergence times and the difficulty of controlling the convergence time,a regional convergence algorithm of mobile wireless sensor networks based on global mapping mechanism is proposed.Firstly,according to the change of transmitting signal-to-noise ratio in the process of node interference,a regional convergence mechanism is designed.This mechanism uses the transmitting signal-to-noise ratio to dynamically adjust the node coverage area,so as to reduce the node interference phenomenon and improve the network convergence ability.The time window of the signal transmission process is dynamically adjusted by using the time back off method to improve the collision phenomenon in the signal transmission process,and effectively reduce the network convergence time and node convergence times.The simulation results show that the proposed algorithm has lower network convergence time and node convergence times than the logic fuzzy trusted algorithm and network life saving evaluation mechanism commonly used in the field of mobile wireless sensor network convergence.