无线传感器网络拥塞控制算法的研究

发布时间：2018-01-02 14:00

本文关键词：无线传感器网络拥塞控制算法的研究　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,无线传感器网络得到了广泛的关注和研究。无线传感器网络的大规模、多跳传输、多对一通信和缓存有限等特点,极易引发网络的拥塞。网络拥塞会增加网络延时,降低吞吐量,增加丢包率,降低网络的整体性能。为解决无线传感器网络拥塞的问题,论文对无线传感器网络出现的拥塞问题做了一些研究。首先,论文研究了无线传感器网络的最大传输能力,得出通过抑制网络上游节点的数据发送速率无法解决网络拥塞。因此,论文基于多属性决策理论提出了一种改进的基于协同路径的拥塞控制算法。该算法综合考察候选节点的拥塞因数、剩余能量、下一跳节点到过数据源节点与汇聚节点直线的距离、相邻节点的数据流量、与拥塞点的距离、信道占用率这些属性,从而选择最佳候选节点建立协同路径,缓解网络拥塞。其次,通过MATLAB仿真平台进行了仿真,实验结果验证协同路径拥塞控制算法在提高网络吞吐量、降低网络延时和网络能耗等方面具有较好的性能,延长了网络的生命周期。最后,论文以MSP430F5438A处理器和nRF24L01射频芯片设计了汇聚节点,以MSP430F5310处理器和nRF24L01射频芯片设计了网络节点。用Visual Studio 2010开发协同路径算法实现平台,从网络节点通信可靠性、组网和路径搭建方面对协同路径拥塞控制算法进行测试分析。结果显示基于协同路径的算法具有很好的性能,能够保证无线传感器网络的服务质量。
[Abstract]:In recent years, wireless sensor networks have received extensive attention and research. Wireless sensor networks have the characteristics of large scale, multi-hop transmission, multi-to-one communication and limited buffer. Network congestion will increase network delay, reduce throughput, increase packet loss rate, and reduce the overall performance of the network. In order to solve the problem of wireless sensor network congestion. In this paper, the problem of congestion in wireless sensor networks is studied. Firstly, the maximum transmission capacity of wireless sensor networks is studied. It is concluded that the network congestion can not be solved by suppressing the data transmission rate of the upstream nodes of the network. Based on the theory of multi-attribute decision, an improved congestion control algorithm based on cooperative path is proposed, which synthesizes the congestion factor and residual energy of candidate nodes. The next hop node to the data source node and the convergence node straight line distance, the adjacent node data flow, the distance with the congestion point, the channel occupancy these attributes, thus selects the best candidate node to establish the cooperative path. Secondly, through the simulation platform of MATLAB, the experimental results show that the cooperative path congestion control algorithm can improve the network throughput. Reduce network delay and network energy consumption and other aspects of better performance, prolong the network life cycle. Finally. The convergent node is designed with MSP430F5438A processor and nRF24L01 RF chip. The network node is designed with MSP430F5310 processor and nRF24L01 RF chip, and the platform of cooperative path algorithm is developed by Visual Studio 2010. The cooperative path congestion control algorithm is tested and analyzed from the aspects of network node communication reliability, networking and path construction. The results show that the algorithm based on cooperative path has good performance. It can guarantee the quality of service of wireless sensor network.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP212.9;TN929.5

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