单源网络层析技术

网络层析技术是一种新的网络端到端测量方法，与传统的网络内部测量方法不同，它是通过端到端的测量数据来推测网络内部链路性能参数和网络拓扑的，从而实现与网络结构或协议无关的网络测量方法。在网络层析技术的基本概念和数学模型的基础上，讨论了目前单源网络层析技术的两类“反演问题”：一是实现源节点到目的节点流量估计问题的被动网络层析技术；二是实现QoS参数估计与拓扑发现的主动网络层析技术。分析了网络层析技术的下一步研究方向。

Survey on single-source network tomography

Network tomography is a new measurement and inferring method, which is different from the traditional network internal measurement method. It infers the network attribute or identifies the network topology based on the measurement occurring on the edge of the network, implementing the network measurement in no connection with network constructor and protocol. The conception and mathematical model of network tomography network are briefly introduced. This paper focuses on network tomography, a term used to characterize two classes of large-scale inverse problems. The first is to deal with the passive tomography in the estimation of the origin-destination traffic matrix. The second is to realize the active tomography for the estimation of quality-of-service parameters and topology. Finally, the research direction in the multiple source network tomography is proposed.