摘要
阴影衰落会增加无线网络的丢包率和误码率,导致无线网络出现链路中断的现象。为了提升无线网络的抗干扰性能,提出基于离散变量的无线网络拓扑优化算法。针对阴影衰落问题,在节点逻辑距离的基础上建立路径障碍移除模型,考虑节点剩余能量对无线网络拓扑展开初步优化。将无线网络生命周期和链路开销作为无线网络拓扑优化过程中的离散变量,通过设计周期休眠机制延长网络生命周期,利用链路开销函数调整节点在网络中的剩余能量,实现资源均衡,完成无线网络拓扑优化。仿真结果表明,所提算法的冗余链路数量少、网络干扰小、网络覆盖性强。
Shadow fading may increase the packet loss rate and bit error rates in wireless networks,leading to link interruption.In order to improve the anti-interference performance of wireless networks,this article put forward an optimization algorithm of wireless network topology based on discrete variables.Aiming at the shadow fading prob-lem,a path obstacle removal model was built based on the logical distance of nodes,and then the wireless network to-pology was preliminarily optimized considering the residual energy of nodes.Moreover,the life cycle and link cost of wireless networks were regarded as discrete variables in the process of wireless network topology optimization.Further-more,the network life cycle was prolonged by designing a periodic sleep mechanism.Finally,the residual energy of nodes in the network was adjusted by using the link cost function,thus achieving resource balance and completing the optimization for wireless network topology.Simulation results show that the proposed algorithm has fewer redundant links and network interference as well as strong network coverage.
作者
程楠
朱国超
CHENG Nan;ZHU Guo-chao(School of Information Engineering,Xinxiang Institute of Engineering,Henan Xinxiang 453000,China;School of Computer and Information Technology,Henan Normal University,Henan Xinxiang 453002,China)
出处
《计算机仿真》
北大核心
2023年第6期435-438,503,共5页
Computer Simulation
关键词
路径障碍移除模型
节点剩余能量
周期休眠机制
链路开销函数
网络拓扑优化
Path obstacle removal model
Residual energy of node
Cycle sleep mechanism
Link overhead function
Networktopologyoptimization
