摘要
为解决无线传感网超宽带传输领域存在的传输性能不高、拥塞控制能力较差等不足,提出了一种基于几何聚类映射采样机制的无线传感网超宽带传输算法。首先,根据无线传感网信道存在的频率干涉特性,采取并发正交传输及周期采样方式对传输数据予以正交处理,以增强节点及链路的网络传输性能,提升超宽带传输质量;随后,基于能量估测机制提出了功率阈值稳定方法,利用最低功率模型对运行不稳定的节点及时进行休眠处理,降低因节点失效而导致数据拥塞的概率,以改善网络的拥塞控制性能。仿真实验结果表明:与当前无线传感网超宽带传输领域常用的基于NMF和2-SVD-QR混合矩阵分解的WSN优化传输算法和基于SWIPT机制的WSN节能传输算法相比,所提算法具有网络传输带宽较高及累计拥塞发生频次较低的特点,实际部署价值较高。
In order to solve the problems of low transmission performance and poor congestion control in the field of UWB transmission in wireless sensor networks,an UWB transmission algorithm based on geometric cluster mapping sampling mechanism is proposed.Firstly,according to the frequency interference characteristics of wireless sensor network channel,the transmission data are processed orthogonally by concurrent orthogonal transmission and periodic sampling,so as to enhance the network transmission performance of nodes and links and improve the UWB transmission quality.Then,based on the energy estimation mechanism,a power threshold stabilization method is proposed,which uses the lowest power model to sleep the unstable nodes in time,reduce the data congestion caused by node failure and improve the network congestion performance.Simulation results show that compared with the WSN optimized transmission algorithm based on NMF and 2-svd-qr hybrid matrix decomposition commonly used in the UWB transmission field of wireless sensor networks and the WSN energy-saving transmission algorithm based on swipt mechanism,the proposed algorithm has the characteristics of higher network transmission bandwidth and lower cumulative congestion frequency,and higher practical deployment value.
作者
刘东旭
LIU Dong-xu(Chuzhou Polytechnic,Chuzhou Anhui 239000,China)
出处
《长春工程学院学报（自然科学版）》
2022年第1期115-119,共5页
Journal of Changchun Institute of Technology：Natural Sciences Edition
基金
安徽省级重点项目(KJ2020A0998,KJ2020A0992)
安徽省级重大项目(KJ2019ZD74)
安徽省质量工程教学团队项目(2021jxtd210)
校级项目(YJY-2020-24)。
关键词
无线传感网
超宽带
频率干涉
正交传输
能量估测
功率稳定
节点休眠
wireless sensor network
Ultra wideband
frequency interference
orthogonal transmission
energy estimation
power stability
node sleep
