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1.
随着云资源池的大规模建设,业务系统集中化部署成为发展趋势,跨省流量的激增对专用IP承载网骨干网带来挑战。本文分析了现有和未来的业务流量占比变化以及新型业务的特点,创造性地提出了构建骨干网新平面的网络架构演进思路。新平面可根据业务需求调整网络设计指标和保护策略,并优先引入SDN技术。演进架构可以为不同类型的业务提供差异化服务,同时最大限度地降低网络建设成本并推进专用IP承载网全面引入SDN技术的进程。  相似文献   

2.
云资源池集中承载业务平台实现了资源共享,降低了投资,节省了维护成本,推进了平台的集约化维护,但同时也带来了新的安全隐患,所有风险都将集中在云资源池,一旦云资源池出现问题,将严重影响其所承载的所有业务平台的安全。基于此,通过结合云计算技术特征及业务平台容灾的实际需求,从资源池的硬件层、虚拟化层、业务平台层等多个维度探讨了业务云平台的整体容灾策略。  相似文献   

3.
饶少阳 《通信世界》2017,(21):58-59
电信运营商前期基本都部署了内部云资源池,用于承载业务平台和IT系统,业务平台和IT系统一开始可能就是采用统一的资源池承载、分离承载,但基本都具备集约部署、分层解耦、采用商用系统、云化率较高等特点,本文将针对上述内容做详细分解. 资源池存在重复建设问题 电信运营商的业务平台或IT资源池基本是集约部署的,包括集团级的资源池以及省集约的资源池,而本地网层面不再部署资源池,不过由于组织架构和技术问题,总体上集约度仍不足,集团级的资源池基本不承载省级平台,各省之间的资源池也无法共享和调度,存在一定的重复投资建设.  相似文献   

4.
随着政企上云步伐的加快,运营商在云网融合承载方面出现一系列亟需解决的问题,针对运营商MPLS(多协议标签交换)VPN(虚拟专用网)与云资源池的融合,文章首先介绍城域MPLS VPN网和云资源池的部署现状,对云网融合业务开展出现的问题进行分析,最后从网络架构、跨域VPN技术实现方式、智能控制三个方面提出网络优化部署方案。  相似文献   

5.
《信息通信》2021,(1):8-10
电信云资源池作为承载核心网虚拟化网元的基础设施层,是5G业务顺利开展的基础,其建设方案与演进方向受到业界广泛关注。文章从5G业务特征入手,分析电信云资源池的网络需求,比较SDN网络与传统网络方案,从组网架构、网络控制模型、路由及协议设计、流量转发模型等方面详细介绍主流SDN网络两种组网方案,探讨适合5G业务需求的电信云资源池建设方案。  相似文献   

6.
云服务模式契合了中小企业信息化发展的需求.然而,如何将平台服务、宽带网络、多样化终端有机结合提供一体化服务,在国内外仍处于探索和试点阶段.在分析中小企业信息化需求的基础上,提出了基于“云—管—端”架构的中小企业云服务解决方案,给出了方案总体架构、技术体系架构及产品服务架构设计;并从技术角度阐述了企业资源池构建、虚拟化应用部署及云服务安全保障等关键实现,最后给出了方案实践部署架构及发展现状.  相似文献   

7.
为实现区域广电数据中心内各运营支撑应用系统的资源整合与共享,在分析研究了数据中心当前面临的主要问题和痛点后,提出了一种基于虚拟化技术对原有应用系统进行升级改造,以建成广电云资源池的部署方案。通过采用服务器虚拟化、存储虚拟化、安全防护虚拟化及业务编排控制等技术手段,有效提高了资源利用率、业务连续性及存储系统性能,降低了空间能耗,实现了高效运维管理与虚拟化安全防护。为广电云资源池的部署实施提供了一定的经验参考。  相似文献   

8.
运营商业务网建设过程中普遍面临平台数量庞大、硬件资源利用率不高、运维成本高、能源消耗大、建设周期长等问题.随着云计算技术日趋成熟,运用虚拟化技术建设云计算资源池,对业务平台进行统一承载已成为运营商业务平台整合的重要途径.首先对云计算技术的服务模式作了概述,在此基础上明确了运营商业务平台资源池的定位.然后针对业务网的特点,提出了利用云平台进行业务平台整合的实施策略,并从某运营商的一个实际案例出发,详细论述了业务平台云计算资源池的建设方案,对硬件设备、虚拟化软件等的配置和选型提供了建议.  相似文献   

9.
《信息通信技术》2019,(2):26-31
电信网络虚拟化对电信运营商来讲是挑战和机遇并存,如何实现传统网络向SDN/NFV新网络的转型,成为摆在运营商面前的一道难题。为帮助运营商提升网络运维效率,降低运维成本,提高产业竞争力,文章从云网融合环境以及电信云特点等方面对其网络架构和部署要求进行了分析和归纳,认为电信云是基于虚拟化、云计算等技术实现云网融合的一个场景,以NFV、SDN为主要技术,并结合电信云网络的特点开发网络功能,可以构建一个资源可全局调度、能力可全面开放、容量可弹性伸缩、架构可灵活调整的云化平台;电信云所需的自动化网络功能,是构建该云化平台的关键技术之一,它保证了运营商网络在云化转型过程中多个层面的网元之间通信的自动化调整、运维和网络安全防护。文章可以为运营商研制电信网络虚拟化方案提供参考和借鉴,促使运营商最终实现网络的软化和云化。  相似文献   

10.
陈刚 《电信快报》2013,(10):25-27,41
资源池主要提供CPU、内存、共享存储、网络等系统资源,划分成不同的虚拟机组成各种业务平台。目前中国电信已建成多个云资源池平台,XenServer提供虚拟化服务,WSS(Web自服务器)虚拟机系统提供网络Console接入服务,使得远程维护在便捷的同时安全性能大幅提高。文章主要介绍资源池特点、工作原理和架构及WSS系统。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
Waveguide multilayer optical card (WMOC) is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling & processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic (VB) language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.  相似文献   

19.
The effect of laser microbeam trapping the bioparticles has been appfied widely in the biology .However the micromechanism of the acting that realizes the laser-microbeam trapping bioparticles is still lacking. In this paper ,the act microchenism of the gradiant force of laser microbeam for the bioparticles is analysed by means of quantum theory ,The result accords with our experiment.  相似文献   

20.
Using multiple importance sampling (MIS) technique, the optical communication system performance affected by polarization-mode dispersion (PMD) and polarization-dependent loss (PDL) is simulated numerically. The power penalties and system outage probabilities are obtained for optical communication systems with on-off keying (OOK) or differential phase shift keying (DPSK) modulation. The simulation results show that DPSK always performs better than OOK. When the system has moderate PDL (about 1.5 dB), it is necessary to compensate effectively the fiber PMD in order to enhance the system tolerance to the PMD and PDL. However, the efficiency of PMD compensation will degrade rapidly when the PMD of the whole optical link drops into the low value.  相似文献   

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