基于视频拨测过程录屏分帧的卡顿感知智能识别

在视频业务已经成为移动网络流量主体的前提下,提高用户观看体验质量已经成为各大网络运营商赢得市场的核心竞争力。同时对于网络运营商来说评估网络中的视频业务质量对于保证视频业务的用户体验质量,管理和优化网络至关重要。传统的网络服务质量参数不能直接反映视频业务质量,不能真实反映用户的观看体验。文章提出一种基于用户感知层面的视频业务质量评估方法,可用于监测网络在线视频播放过程是否发生卡顿现象,挖掘网络存在问题。     

“四维三步法”提升互联网内容访问质量

随着三网融合的深入开展,广电网络所面临的挑战和压力与日俱增,为避免网络效率低、用户体验差等不利因素带来的影响,进行精细化的互联网内容运营已成为广电运营商的战略选择。贵广网络以提升用户体验为出发点,建立"四维三步法"提升互联网内容访问质量,全面提升了本网化率和用户感知。     

"四维三步法"提升互联网内容访问质量

随着三网融合的深入开展,广电网络所面临的挑战和压力与日俱增,为避免网络效率低、用户体验差等不利因素带来的影响,进行精细化的互联网内容运营已成为广电运营商的战略选择.贵广网络以提升用户体验为出发点,建立"四维三步法"提升互联网内容访问质量,全面提升了本网化率和用户感知.     

流量业务用户感知的评估方法分析

本文探寻移动数据业务网络参数、性能指标与用户体验之间的关系,分析影响用户感知的因素,提出用现网数据量化用户体验的方法。对于移动数据业务,我们将从移动用户体验,即感知质量QoE的角度出发,分析现网数据业务特征,研究影响业务QoE关键因素,抽象数据业务类型,探索评估各类业务用户感知质量评估的理论依据。     

用户体验管理中心系统实现

用户体验管理中心系统实现了一种基于用户体验的网络监控、评测系统.通过收集电信系统信令面、用户面、配置信息以及各监控系统数据,并进行关联与综合分析,得出基于用户体验层面的网络运行质量情况.区别于传统的仅仅通过类似时延、带宽、接通率等物理量来衡量网络运行质量的监控系统.通过分析海量用户数据为网络管理者提供决策依据,实现精细化、差异化服务,进而为网络使用者提供更好的使用体验.     

华为服务SmartCare解决方案:好的网络指标,更好的用户体验

"电信网络的运营维护不再是仅仅关注网络KPI,更需要从用户对业务质量要求、业务对网络质量要求出发,关注用户体验和网络质量。"MBB时代,电信行业经历着从语音到数据业务的迅猛发展,用户对业务需求也更加个性化和多元化。激烈的市场竞争给运营商的运维带来了前所未有的挑战。用户满意度管理比以往更重要。网络、业     

基于用户感知的WLAN网络无线优化设计

基于对用户感知的WLAN网络无线优化设计,其目的主要是改善当前的网络速度及覆盖面积,由于传统的WLAN网络存在漏洞,以及真实环境网络质量较差,没有能够达到用户的要求.通过分析传统的WLAN网络指标,并观察其对用户体验感知的影响,然后采用Veriwave进行实验,验证WLAN网络无线优化对用户体验感知的效果,同时确定好网络优化的指标,最终对基于对用户感知的WLAN网络无线设计出一套可取的方案.     

面向通信感知计算一体化网络业务的用户体验质量估计

未来的6G网络有望成为集感知、通信和计算为一体的通感算一体化网络，以满足各种新型业务的极致化需求。用户体验质量将成为网络运维管理的关注重点。因此，提出并设计了一种新的QoE估计方法。首先，应用机器学习算法构建KPI与QoE关联性分析模型。其次，根据关联性分析结果搭建深度神经网络利用KPI实现QoE估计。最后，仿真结果表明所提方法在估计用户体验质量方面具有很高的准确性。     

面向用户感知的LTE网络评估模型的设计与实现

随着数据业务的飞速发展以及智能终端的快速普及,如何评价并提高用户体验已成为当前网络优化、未来网络设计的重点.基于此,提出了一套面向用户感知的LTE网络评估指标体系,并采用层次分析法、变异系数法,建立了以用户感知为核心的LTE网络评估模型.最后,以重庆某小区实测数据为例,对该小区数据业务性能进行评估,并给出了直观的分析评估结果.     

基于用户感知的WLAN网络优化

侧重于用户感知的WLAN网络优化,其目的是弥补当前网络优化仅从网络覆盖面及射频角度出发,而忽略真实环境网络质量,用户体验也存在漏洞。方法是首先在经过分析WLAN传统优化指标的基础上,提出影响用户体验感知的因素,然后通过利用Veriwave进行仿真实验,模拟用户对网络的真实效果,验证出影响因素的效果并且确定网络优化指标,最终提出基于用户感知的WLAN网络优化方案。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first