2014年“最靓”创新业务

融合通信在12月19日举行的中国移动全球合作伙伴大会上,中国移动正式发布传闻已久的＂融合通信＂业务,将原有手机内＂通话＂、＂消息＂、＂通讯录＂三个基础通信入口升级为＂新通话＂、＂新消息＂、＂新联系＂。其中,＂新通话＂将提供高清语音、视频通话和多方通话等功能,＂新消息＂将提供多种媒体格式的一对一消息和群聊功能,并且与传统短/彩信无缝互通。＂新联系＂将基于用户通信关系构建社交关系,提供公共服务入口,聚合多种自有服务入口,如网上营业厅、打车、游戏、金融等。     

IP智能语音终端业务介绍

IP集合通信打破传统单一模式的界限，实现各种通信方式的融合，将电话、传真、电子邮件、软件客户端等多种通信手段整合在统一的IP通信平台上。本文对IP智能语音终端提供的三类特色业务进行了详细的介绍。通过基本语音类业务、统一消息业务、协同工作业务，能实现音频、视频及数据等多种通信模式的融合；实时通信业务与非实时消息业务的融合：通信技术功能与办公及业务流程的融合。     

融合通信助力运营商转型

随着移动互联网的快速发展,运营商的传统通信业务已不能满足用户需求,难以应对OTT的竞争。在此背景下,以VoLTE为核心的融合通信成为运营商扭转颓势,转型发展的重要手段。深入分析了融合通信的发展模式,并与传统通信、OTT进行业务与技术对比,得出运营商发展融合通信的挑战及战略意义。     

浅谈融合通信在运营商网络中的应用

为应对互联网企业OTT(Over the Top)业务的挑战,电信运营商开展了融合通信的建设,实现由传统语音、短信业务向融合通信的演进.根据中国移动"新通话"、"新消息"、"新联系"的融合通信发展战略,为提升个人、家庭、企业用户的通信业务体验,本文对融合通信的建设应用进行了研究.本文通过平台应用调研和需求分析,研究了融合通信业务平台的设计思路和网络组织架构,最后总结了系统建设应用中的问题以及后续的解决方案.     

OTT业务给通信设备商带来的机会与挑战

探讨OTT业务对传统通信产业和运营商带来的影响,特别是对传统通信设备商带来的机会与挑战,以及通信设备商融入OTT产业链面临哪些困难等。     

OTT

推荐理由：OTT在通信服务领域是指互联网企业利用通信运营商的网络直接向用户提供服务。广义理解,互联网本身就是OTT;狭义理解,业界当前关注的OTT,主要指OTT IM和OTTTv业务。OTT的本质是价值转移,随着互联网产业生态体系的不断成熟,OTT业务已经成为融合通信、传媒、娱乐、生活等多种需求的新型信息服务平台,对电信、广电、金融等多个传统行业产生了巨大的影响,且未来随着技术和业务的不断演进,趋势会进一步加剧。     

iMessage垃圾短信日趋严重亟需加强监管完善防范手段

伴随着OTT即时通信业务的迅猛发展,用户发送的即时通信消息数量快速增长,然而,该业务也成为了垃圾短信新的温床。其中,苹果公司的OTT即时通信业务i Message的垃圾短信问题最为严重。目前,i Message滥发垃圾短信趋于专业化和规模化,形成规模化利益链。各国监管部门亟需制定规章制度,为治理垃圾短信提供执法依据,并跟踪研究相关技术监测和防范手段。OTT即时通信业务成为垃圾短信新温床伴随着OTT即时通信业务的迅猛发展,用户发送的即时通信消息数量快速增长。与此同时,OTT即时通信业     

融合通信即时消息业务安全防护研究

融合通信业务的即时消息业务在为用户带来巨大便利的同时,也会带来安全管控风险和技术挑战。本文提出融合通信中即时消息业务在网络侧的安全监测和处置技术要求,通过对用户发送消息的发送特征和用户举报信息等进行综合分析,对判定的不良消息进行适当处置。     

基于产业链视角的OTT业务发展探析

OTT业务的迅猛发展对基础电信运营商的传统业务带来了剧烈冲击。在综合分析OTT业务的基础上将OTT业务划分为综合通信类和内容服务类,并从产业链的角度对OTT业务进行了分析,然后从移动通信产业链、终端制造产业链和内容服务产业链的整合角度出发,提出了运营商应对OTT业务冲击的发展策略建议。     

电信运营商IPTV+OTT业务网络承载方案简析

随着互联网、移动互联网的飞速发展,媒体、通信等产业开始呈现出跨界融合的趋势。2012年,OTT(互联网视频业务)取代三网融合成为视频行业最炙手可热的词汇。文章阐述电信运营商承载网络的现状及面临的挑战,分析IPTV业务网络承载的现状以及IPTV+OTT业务网络承载面临的挑战,提出IPTV+OTT业务网络承载方案,对方案的利弊进行比较,旨在为电信运营商承载网络承载IPTV+OTT业务提供参考。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.