A Novel Outage Capacity Objective Function for Optimal Performance Monitoring and Predictive Fault Detection in Hybrid Free-Space Optical and RF Wireless Networks

This study develops an optimal performance monitoring metric for a hybrid free space optical and radio wireless network, the Outage Capacity Objective Function. The objective function—the dependence of hybrid channel outage capacity upon the error rate, jointly quantifies the effects of atmospheric optical impairments on the performance of the free space optical segment as well as the effect of RF channel impairments on the radio frequency segment. The objective function is developed from the basic information-theoretic capacity of the optical and radio channels using the gamma-gamma model for optical fading and Ricean statistics for the radio channel fading. A simulation is performed by using the hybrid network. The objective function is shown to provide significantly improved sensitivity to degrading performance trends and supports of proactive link failure prediction and mitigation when compared to current thresholding techniques for signal quality metrics.

TD-LTE基于统计分析的MIMO性能优化方法

本文根据TD-LTE网络的优化需求和实践应用,介绍一套基于扫频测试数据和网管统计数据相结合的TD-LTE MIMO性能的优化方法,通过对不同来源的数据进行联合分析,提高了MIMO性能故障小区的定位效率,挖掘了更深层次的MIMO隐患故障,快速提升了TD-LTE网络性能,提升用户感知。

基于统计分析的网络性能管理与故障预测

提出了一种基于统计分析的智能化网络性能管理方法，它利用网络性能监测中得到的统计信息对网络性能进行分析，进而对故障进行预测，提高了网络管理的智能化。论述了统计分析方法的原理，并且给出了网络管理应用实例，证明了它的有效性。

传输NMS及OSS中的统计与分析功能

针对传输网管系统对数据统计与数据分析工作等方面关注较少的问题,在分析其对数据统计与数据分析等功能需求的基础上,提出了点、线、面的统计分析方法。在网络可靠性方面,以实际传输网络为例(1个10GbitSDH(SynchronousDigitalHierarchy)环,2个2 5GbitSDH环,均构架在由约120个DWDM(DenseWavelengthDivisionMultiplexing)放大或再生设备构成的长途光网络上,途经15个省),对其故障数据的统计特性进行了分析,结果表明,其到达曲线与负指数曲线非常接近。在此基础上通过数学建模,提出了网络可靠性的分析方法;探讨了目前传输网络管理系统及运营支撑系统在此方面的不足,同时提出了将数据统计与分析功能纳入网络管理功能定义的建议。