摘要
现代物联网的广泛应用依托于底层无线传感器网络的支撑,作为基础性技术,合理利用有限能量,提高网络寿命和数据传输可靠性是研究的重点,于是提出基于反馈协作的数据传输方案。中继节点利用反馈和感知能力对整个网络中节点能量进行监控,当接收到失败反馈时,系统便会启动协作传输,利用信道最优策略得到最优中继,将数据重新发送给目标节点。针对节点能量不足的情况,根据能量和距离设计了节点协作模型,同时将模型的能量分解为簇内与簇间协作两阶段进行分析。最后结合可用能量和传输能耗的加权,对中继节点的选择采取精确计算。仿真分别从中断、延迟、生命周期,以及吞吐量方面对所提方案采取性能测试。结果表明,基于反馈协作方案具有较低的中断概率和传输延迟,增强了节点能量利用率和吞吐量,提高了网络寿命和数据传输可靠性。
The wide application of the modern Internet of things relies on the support of the underlying wireless sensor network.As a basic technology,reasonable use of limited energy,improving network life and data transmission reliability are the focus of research.Therefore,a data transmission scheme based on feedback cooperation is proposed.Relay nodes monitor the energy of nodes in the whole network by using feedback and sensing ability.When receiving failure feedback,the system will start cooperative transmission.The optimal relay is obtained by using the optimal channel strategy,and the data is retransmitted to the target node.Aiming at the problem of insufficient energy,a node cooperation model is designed according to the energy and distance.At the same time,the energy of the model is decomposed into two stages:intra-cluster cooperation and inter-cluster cooperation.Finally,combined with the weighting of available energy and transmission energy consumption,the relay node selection is calculated accurately.Simulation experiments are conducted to test the performance of the proposed scheme in terms of interruption,delay,life cycle and throughput.The results show that the feedback-based cooperation scheme has lower interrupt probability and transmission delay,improves the energy utilization and throughput of nodes,and improves the network life and data transmission reliability.
作者
刘芳
汤永利
LIU Fang;TANG Yong-li(School of Information Engineering,Zhengzhou University of Industrial Technology,Xinzheng Henan 451100,China;College of Computer Science and Technology,Henan University of Technology,Henan Jiaozuo 454000,China)
出处
《计算机仿真》
北大核心
2022年第5期375-379,共5页
Computer Simulation
关键词
物联网
无线传感器网络
反馈协作
数据
Internet of things
Wireless Sensor Network
Feedback Cooperation
Data
