基于GIS的电信光纤网络资源管理系统设计

根据光纤网络资源地理空间分布的特点和地理信息系统在空间数据管理上的优越性,设计了基于GIS的电信光纤网络资源管理系统.该系统除实现对光纤网络的空间及属性数据管理的基本功能外,还能够对相关数据进行综合分析处理,为网络规划设计和维护管理提供辅助决策支持,提高光纤网络资源管理效率.     

基于GIS技术的光纤网络资源管理系统的研究与设计

文章从广西电子政务外网光纤网络资源的特点和资源管理中存在的问题出发,阐述利用GIS技术,建设图形化、可视化、智能化的光纤网络资源管理系统.系统基于电信网的概念模型,以电信网络管理为核心,通过工程管理、资产管理、空间及属性的动态管理,实现光纤网络资源全生命周期管理.此外,系统还提供多层面的网络性能分析与优化手段,便于光纤网络规划、设计和维护,提高光纤光路资源管理的效率.     

有线电视网络光纤资源管理

介绍了有线网络光纤资源管理方法,光缆接续表的标注和光缆接续图的绘制方法,将光缆网络路由图和设备分布情况与基础地图相叠加的方法,光纤资源管理系统实现方法及其在实际中的应用.     

基于GIS/GPS的通信网络资源管理系统的设计与实现

根据黑龙江省通信网络资源管理的需求,综合应用地理信息系统技术、空间数据库技术、GPS定位技术、移动网络通信技术和数据加密技术,采用GPS数据采集与封装、采集数据经移动网络传输、GPS数据的处理和地图匹配入库、资源数据集中管理的方式,为通信管理部门提供一套完整的通信网络资源管理系统解决方案.同时简要介绍了系统中各个模块遇...     

基于光虹膜技术构建数智化ODN网络研究

为了实现接入网哑资源数智化管理以及光路故障拓扑可视,完成故障精准定界定位,提高资源管理准确率,采用光虹膜技术对传统ODN光分配网进行数智化改造。通过超高精度的加工技术,在光纤中雕刻出光虹膜,使得传统ODN网络能够拥有唯一性标签,从而实现ODN网络的数智化转型。将ODN光分配网向数智化转型能有效提高巡检效率,减少用户弱光,从而提高用户满意度。数智化ODN网络速度快、质量高,让优质网络更快更好地接入用户。     

保偏光纤环与Y波导芯片直接耦合技术研究

光纤陀螺光路结构中,Y波导器件与保偏光纤环通过尾纤熔接的方式连接形成闭合回路来敏感系统相对惯性空间的转动信息,而熔接点引入的偏振交叉耦合以及背向反射是制约光纤陀螺测量精度进一步提高的主要因素.为此,提出了一种实现保偏光纤环与Y波导芯片直接耦合的方法,并制作了两者直接耦合的敏感环光路.经实验测试,光路中Y波导器件的插入损耗典型值为2.7 dB,分光比优于48/52～52/48,偏振串音优于-30 dB,性能指标与常规的Y波导器件相当.该光路模块理论上有利于减小光纤陀螺系统噪声和提高测量精度.     

基于GIS技术的电信网络资源管理系统

捷奥公司采用面向对象的编程技术和软件工程管理方法,开发出了电信网络资源管理系统TNGIIS4.0.该产品以地理信息系统为基础,是综合管理电信企业的传输、交换、动力、管线、号线等资源的综合电信资源信息管理系统,为电信企业提供了一个综合资源管理平台.由于该产品所管理的资源贯穿电信企业所有部门,故该产品在管理电信资源的基础上将同时提供业务支撑模块,以支持各部门对资源管理的需要,也便于电信企业原有系统对资源管理(特别是支持九七工程改造)的需要.     

全光纤光外差检测技术的研究

本文介绍了由普通单模光纤构成的全光纤光外差检测系统的基本原理和实验研究结果.在该系统中采用了自行研制设计的实现全光纤化的两个关键光纤元件,普通单模光纤频率偏移器和普通单模光纤偏振控制器,介绍了此两光纤元件的基本工作原理和设计方法.文章还给出了实际的全光纤外差检测系统.元器件的选用及实现光外差检测空间条件的光路调节方法.     

智能ODN走向成熟 中兴通讯构建智慧光纤基础网络

中兴通讯的eODN解决方案,聚焦于光纤网络资源管理的流程优化,实现存量和新建光纤设备智能化管理、资源信息同步化和业务流程自动化。随着光纤网络的快速发展,现网人工管理模式已很难适应光网络发展的需要,迫切需要建立一套完整的光纤网络管理系统。智能ODN以其光纤设备智能化,资源信息同步化和业务流程自动化的优势,     

直接耦合技术在高精度光纤陀螺上的应用

在光纤陀螺光路结构中,Y波导与光纤环通过尾纤熔接形成闭合回路来敏感相对惯性空间的转动信息,而熔接点处引入的非互易相位差会制约高精度光纤陀螺检测精度,还会降低陀螺的环境适应性和长期可靠性.在某项目支持下,对Y波导与光纤环进行了直接耦合工艺处理,并将该模块应用到高精度光纤陀螺光路结构中.测试表明,在保证陀螺光路、电路、软件...     

Achieving fast and bandwidth-efficient shared-path protection

Dynamic provisioning of restorable bandwidth guaranteed paths is a challenge in the design of broad-band transport networks, especially next-generation optical networks. A common approach is called (failure-independent) path protection, whereby for every mission-critical active path to be established, a link (or node) disjoint backup path (BP) is also established. To optimize network resource utilization, shared path protection should be adopted, which often allows a new BP to share the bandwidth allocated to some existing BPs. However, it usually leads the backup paths to use too many links, with zero cost in term of additional backup bandwidth, along its route. It will violate the restoration time guarantee. In this paper, we propose novel integer linear programming (ILP) formulations by introducing two parameters (/spl epsi/ and /spl mu/) in both the sharing with complete information (SCI) scheme and the distributed partial information management (DPIM) scheme. Our results show that the proposed ILP formulations can not only improve the network resource utilization effectively, but also keep the BPs as short as possible.     

多域光网络中一种支持区分可靠性的通路保护算法

区分可靠性的通路保护方案既能为光网络中具有不同可靠性需求的业务提供有效的故障保护,又能优化网络资源的利用,是一种高效的生存性机制。但目前此类问题的研究主要是集中于传统的单域光网络中,所得的研究成果无法直接运用于具有多域特点的下一代光网络中。针对这一问题,在对以往通路保护算法进行改进的基础上提出了一种适用于多域光网络中的支持区分可靠性的通路保护算法,并对其性能进行了计算机仿真研究。仿真结果表明,该算法不仅能满足多域光网络中不同业务的可靠性需求,而且能提高网络资源的利用率、降低业务连接的阻塞率。     

Demonstration of dynamic application-aware labelled optical burst switched network

The first demonstration of a dynamic application-aware labelled optical burst switched network is reported. With the implementation of three novel mechanisms, i.e. dynamic session initiation protocol peer-to-peer hybrid resource discovery and management, dynamic end-to-end label switched path setup and dynamic offset time, the network can support various emerging applications with high efficiency and scalability.     

Transmission capacity of optical path overhead transfer schemeusing pilot tone for optical path network

Photonic networks based on the optical path concept and wavelength division multiplexing (WDM) technology require unique operation, administration, and maintenance (OAM) functions. In order to realize the required OAM functions, the optical path network must support an effective management information transfer method. The method that superimposes a pilot tone on the optical signal appears very interesting for optical path overhead transfer. The pilot tone transmission capacity is determined by the carrier to noise ratio which depends on the power spectral density of the optical signal. The pilot tone transmission capacity of an optical path network employing WDM technology is elucidated; 4.5 kb/s transmission can be realized when the pilot tone modulation index is set at 3%     

IP over WDM光网的统一控制面研究

新型光联网技术的发展迫切需要一个统一的控制平面来完成智能化的资源发现、状态信息散播、通道选择和通道管理。文章分析了光网络模型的发展及演化过程，以及对统一控制面的需求。详细论述了统一控制面的几个功能模块及结构，并对模块之间的接口特性做了较为详尽的分析。     

Photonic transport network architecture and OA&M technologiesto create large-scale robust networks

In order to realize a large-scale and robust photonic transport network, a network protection strategy and operation, administration, and management (OA&M) realization scheme in wavelength division multiplexing optical path (WDM OP) transport networks has been developed. This paper discusses the networking (restoration/protection) concepts in each optical layer and proposes the most suitable networking strategy. To develop the OA&M technique, the characteristic information format of each optical layer must be discerned. A network node interface (NNI) structure for the WDM OP transport network is proposed. The proposed NNI is defined as the optical transport module (OTM). An OP signal format is defined as the optical transport unit (OTU). Overhead information and schemes to transmit it are also discussed     

智能光网络的资源管理技术

文章阐述了资源管理在下一代智能光网络中的重要性,从邻接资源的管理和整个网络的带宽管理两个方面详细论述了智能光网络的资源管理技术,给出了基于链路资源管理协议(LMP)的智能光网资源管理解决方案.     

Network architecture for optical path transport networks

This paper proposes a new layered transport network architecture on which the WDM optical path network can be effectively created. The optical path network will play a key role in the development of the transport network that will realize the bandwidth-abundant B-ISDN. This paper extends the layered transport network architecture described in ITU-T Recommendation G.803 which is applied in existing SDH networks. First, we elucidate an application example of WDM optical path networks. Next, we propose a new layered architecture for WDM-based transport networks that retains maximum commonality with the layered architectures developed for existing B-ISDN networks. The proposed architecture is composed of circuit layer networks, electrical path layer networks, optical layer networks, and physical media (fiber) networks. The optical layer is divided into an optical path layer and an optical section layer. The optical path layer accommodates electrical paths. Optical section layer networks are divided into optical multiplex section (OMS) layer networks and optical repeater section (ORS) layer networks. The OMS layer network is concerned with the end-to-end transfer of information between locations transferring or terminating optical paths, whereas the ORS layer is concerned with the transfer of information between individual optical repeaters. Finally, a detailed functional block model of WDM optical path networks, the function allocation of each layer, and an optical transport module (OTM) are developed