面向可靠性的无线传感网分布式能量意识拓扑优化算法研究
发布时间：2018-07-17 06:19
【摘要】：无线通信和现代网络等技术的进步,推动了无线传感器网络(Wireless Sensor Network, WSN)的产生和发展,使其在环境监测及预报、健康护理和智能家居等各个领域具有广泛的应用。与有线传感器网络不同的是,WSN具有大规模、自组织、拓扑结构动态变化、能量有限且不可补充等特点。又因为它容易受到温度、湿度、障碍物等的影响造成衰减、多径、盲区,致使数据传输产生丢包、重传等现象。所以这就要求网络在许多应用场合要确保其能量有效利用且数据可靠传输。考虑到优化的拓扑结构可以节约网络能量,确保数据可靠传输,本课题通过分析和总结已有的可靠拓扑模型,针对WSN在可靠性和节能方面研究的不足之处,提出相应研究内容,具体有：(1)总结了无线传感器网络拓扑优化算法的研究现状,基于实际应用环境分析出可靠性对于增强网络的适应性及推动网络的应用具有非常重要的意义,因此针对网络可靠性能从链路稳定和能量均衡两方面来分析可靠拓扑模型。为本课题设计面向可靠性的无线传感网分布式能量意识拓扑优化算法奠定了基础。(2)考虑到真实环境中的非对称链路会造成信号传输失败,利用链路质量预测的方法,建立面向链路稳定的通信可靠模型。并以此模型为基础,根据分布式算法的优势,设计了基于通信可靠模型的WSN分布式拓扑优化算法。该算法可以建立双向连通的拓扑结构,并通过仿真验证了其具有提高网络通信可靠性、降低网络能耗和延长网络生命期的性能。(3)数据能够成功传输是建立在拓扑可靠基础上的,并且节点被孤立等因素使得节点实际传输信息的时间与节点耗尽能量的时间不一致,因此分别建立拓扑可靠模型和链路实际生存时间模型。然后以此为基础提出面向通信可靠与能量均衡的WSN拓扑优化模型,并设计了相应的拓扑优化算法。理论分析和仿真结果表明该算法不仅能提高网络可靠性,而且延长了网络传输信息的时间。
[Abstract]:The progress of wireless communication and modern network technology has promoted the generation and development of Wireless Sensor Network (WSN), and made it widely used in various fields such as environmental monitoring and forecasting, health care and intelligent home. Unlike wired sensor networks, WSN has a large, self-organized, and topological structure. Dynamic change, energy limited and non complementary, and because it is vulnerable to temperature, humidity, obstacles and other effects to cause attenuation, multipath, blind area, resulting in data transmission loss, retransmission and other phenomena. So this requires the network to ensure the efficient use of energy and reliable transmission of data in many applications. The topology structure can save network energy and ensure reliable data transmission. By analyzing and summarizing the existing reliable topology models, this paper puts forward the corresponding research contents in view of the shortcomings of WSN in reliability and energy saving research. (1) it summarizes the research status of the topology optimization algorithm of wireless sensor network, based on the actual needs. It is of great significance to analyze the reliability of the network to enhance the adaptability of the network and to promote the application of the network. Therefore, the reliable topology model is analyzed from two aspects of link stability and energy balance. 2. (2) considering the asymmetric link in the real environment will cause the failure of signal transmission, the link quality prediction method is used to establish a link stable reliable communication model. Based on this model, a distributed topology optimization algorithm based on the reliability model of communication is designed based on the advantages of the distributed algorithm. The algorithm is designed for the WSN distributed topology optimization algorithm. We can establish a bidirectional connected topology, and verify that it can improve the reliability of the network communication, reduce the energy consumption of the network and prolong the lifetime of the network. (3) the successful transmission of the data is based on the topology and reliability, and the nodes are isolated so that the nodes actually transmit the time and node consumption of the information. When the energy is not consistent, the topology reliable model and the link actual survival time model are established respectively. Then, the WSN topology optimization model for communication reliability and energy balance is proposed and the corresponding topology optimization algorithm is designed. The theoretical analysis and simulation results show that the algorithm not only improves the network reliability, but also shows that the algorithm can improve the reliability of the network. It also prolongs the time of network transmission of information.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP212.9;TN929.5
，
本文编号：2129372
[Abstract]:The progress of wireless communication and modern network technology has promoted the generation and development of Wireless Sensor Network (WSN), and made it widely used in various fields such as environmental monitoring and forecasting, health care and intelligent home. Unlike wired sensor networks, WSN has a large, self-organized, and topological structure. Dynamic change, energy limited and non complementary, and because it is vulnerable to temperature, humidity, obstacles and other effects to cause attenuation, multipath, blind area, resulting in data transmission loss, retransmission and other phenomena. So this requires the network to ensure the efficient use of energy and reliable transmission of data in many applications. The topology structure can save network energy and ensure reliable data transmission. By analyzing and summarizing the existing reliable topology models, this paper puts forward the corresponding research contents in view of the shortcomings of WSN in reliability and energy saving research. (1) it summarizes the research status of the topology optimization algorithm of wireless sensor network, based on the actual needs. It is of great significance to analyze the reliability of the network to enhance the adaptability of the network and to promote the application of the network. Therefore, the reliable topology model is analyzed from two aspects of link stability and energy balance. 2. (2) considering the asymmetric link in the real environment will cause the failure of signal transmission, the link quality prediction method is used to establish a link stable reliable communication model. Based on this model, a distributed topology optimization algorithm based on the reliability model of communication is designed based on the advantages of the distributed algorithm. The algorithm is designed for the WSN distributed topology optimization algorithm. We can establish a bidirectional connected topology, and verify that it can improve the reliability of the network communication, reduce the energy consumption of the network and prolong the lifetime of the network. (3) the successful transmission of the data is based on the topology and reliability, and the nodes are isolated so that the nodes actually transmit the time and node consumption of the information. When the energy is not consistent, the topology reliable model and the link actual survival time model are established respectively. Then, the WSN topology optimization model for communication reliability and energy balance is proposed and the corresponding topology optimization algorithm is designed. The theoretical analysis and simulation results show that the algorithm not only improves the network reliability, but also shows that the algorithm can improve the reliability of the network. It also prolongs the time of network transmission of information.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP212.9;TN929.5
，
本文编号：2129372
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