增强策略控制,构筑智能管道

从固移融合的IP QoS策略控制、动态的PCC控制2个方面讨论如何增强IP资源的控制架构,以打造更好的IP智能管道。     

增强策略控制 构筑智能管道

从固移融合的IPQoS策略控制和动态PCC控制两个方面，讨论如何增强IP资源的控制架构，以打造更好的IP智能管道。     

浅析智能管道中的一体化资源指配技术

文章分析了运营商用于提升用户体验的各类资源指配服务技术,根据智能管道技术的发展思路,提出了固移融合能力的一体化指配服务技术体系,总结了主要技术特征,并对关键的资源协同指配技术和服务流程管理技术提供了参考设计和应用建议。     

智能管道研究综述

一、智能管道相关技术和标准 1.总体架构 智能管道的总体架构分为控制层和网络层,实现网络和控制的有机分离。其中网络层包含无线／有线接入网、IP骨干网、传送网、核心网、内容分发网络等：控制层在原有认证系统,网络管理系统基础上,增加或完善融合认证、感知分析,策略控制及流量调度等功能。同时,智能管道还需要与上层业务平台交互,并与各种用户终端协同,实现从底层网络到上层增值应用的协同服务。     

超宽带网络环境下的一体化自助指配技术研究

以未来超宽带网络环境为背景,结合近期运营商在智能管道技术上的发展思路,提出了以增强用户体验为中心的一体化自助指配服务架构,通过分析固移融合的典型案例,研究了自助指配服务关键技术,最后给出了相关技术的发展建议。     

基于SDN的固移网关融合演进研究

对固移汇聚网关的融合演进作了深入分析,并分别探讨了基于SDN理念的xGSN/xGW/BRAS的控制转发分离架构及固移汇聚网关融合的远景,为汇聚层面的固移融合提供了一种思路。     

智能管道体系数据应用子层的设计与研究

智能管道体系的逐步完善及周边应用系统的不断丰富,对智能管道多维感知系统的数据提供能力和数据质量提出了更高的要求.在研究智能管道体系结构的基础上,提出了在智能管道体系内新增数据应用子层设计方案,以“数据集中,应用分布”的数据模式为基础,为承载控制层、业务应用层提供数据支撑,完善智能管道体系架构,增强了智能管道数据应用能力.     

增强策略控制 构筑智能管道

固移融合的策略控制中心,可以减少运营商的设备数量,降低投资运营成本,让金牌用户在各个无线网络中都享受到高品质的服务,提高这类用户的粘度。现在电信业进入了宽带数据通信的时代,语音业务持续萎缩,IP数据流量增长很快,因此所谓的智能管道指的是如何智能地管控IP网络资源,而IP网络最重要的资源指的是数据业务的带宽,相关的QoS参     

透视智能管道四层模型 媒体层被忽视

智能管道可以划分成智能网络覆盖、智能网络管道、智能媒体管道和精确营销管道四层模型,其中智能媒体管道在业界探讨较少。随着智能管道的深入推广,人们的研究角度逐渐变得具体而细致。就像互联网被划分成七层模型,目前智能管道也出现了逻辑分层的探讨,     

WDM-PON在移固融合发展中的优势分析

首先介绍了当前移固融合的发展需求,在此基础上引出当前可能作为移固融合承载网的各类无源光网络（PON）。分别介绍了EPON/GPON和WDM-PON的系统架构和工作原理,分析其各自的特点和技术优势,最终得出WDM-PON是未来移固融合发展趋势的结论。     

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.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

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