宽带多业务数据网建设经验

宽带网络正逐步进入生活的各个领域，各大网络运营商纷纷构建宽带网络平台，中兴通讯带多业务交换机ZXB10系列成功组建了云南省广电系统省级骨干宽带数据交换网络，并已产生经济效益。由于该网络的多业务接入功能，正逐步呈现出多客户群，大用户量的良好发展趋势。     

城市有线电视网络发展的思考

本文论述了城市有线电视网络地发展方向应以数据广播业务为主，以ＩＰ网络为妆入风民城市信息化建设，量力而行，逐步开展双向增值业务。     

浅析软交换的建网优势以及建网模式探讨

软交换技术构建的网络是一种业务驱动型网络．通过业务／呼叫控制分离和呼叫控制／承载分离实现相对独立的业务体系,使业务独立于网络。软交换技术是网络发展的趋势,软交换分层架构将会逐步成为核心网电路域的主流架构．而非分层架构将在5～10年内被逐步淘汰。     

2007电信运营业大事回放

电信业转型初见成效 2007年是中国电信业转型的执行年，各电信企业紧紧抓住国家信息化战略的重要机遇，大力发展各项信息业务。目前转型己初见成效，电信非话音业务收入在总体业务收入中的比例达到了30％以上。通过前两年的宣传、实践，2007年电信企业转型不断深化：优化原有网络，逐步构建下一代网络，为各项转型业务的开展奠定基础：深入研究细分客户群体的需求，开发多样的信息业务；     

GPRS及3G业务提供中的关键技术

未业3G的终端可以实现更高质量的语音通话业务，而且还可以实现多种其他功能。运营商面临的最大问题是如何构建面向终端用户，具有开放性和扩展性的业务平台，在各个网络发展阶段如何平滑地将各种业务决速引入到自己的网络中。     

如何构建广电宽带网络安全可靠的数据中心系统平台

随着广电行业数字电视业务和数据业务的高速发展,广电网络也由单一传送电视节目逐步过渡到电视业务和数据业务并重。广电领域的运营商正在尝试向通信领域角色的转换。宽带网络平台所承载的业务由最初的单一数据业务逐步发展为多种业务并存,宽带网络平台安全稳定运行已经变得越来越重要。作为宽带网络平台核心的数据中心包括了多种业务的认证控制、流量分析以及网络内容服务等多种核心业务系统。因此构建一个安全可靠的数据中心系统平台显得非常重要。本文将以数据中心接入控制系统平台中的DHCP服务器系统为例,从硬件系统、软件系统、网络架构以及产品支撑等方面讲述对数据中心核心业务系统平台进行调整优化的思路,为各广电运营商在如何构建安全可靠的宽带网络数据中心系统平台方面提供一定的参考。     

LSON组网中的保护恢复机制

光传送网正逐步从单纯的传送平台演进为与上层业务网紧密结合的综合网。为使网络更有效快速地服务于最终用户，运营商需要构筑新一代的光传送网，通过ASON智能光网络技术将核心网和综合业务传送网结合在一起，提供全新端到端的业务服务和管理模式。     

多样化业务需求与全维网络能力的映射

提出一种通用的业务需求与网络能力映射方法，通过网络能力自组织和业务需求自映射灵活适配业务发展需求。构建全维可定义网络能力模型，抽象和分解网络各层能力，并从通信主体、网络功能、网络资源、网络安全4个维度以及30多种具体元素实现网络能力开放可定义和动态演进发展。针对复杂的综合性业务需求，“动态地”选择和组合网络能力，对比业务需求与网络能力间匹配度，采用最优能力组合重构复合型网络服务，设计直观的0-1映射矩阵形式，支撑映射实现。     

IMS将一统网络天下

IMS构建面向来来的网络结构 目前，运营商开始把握时机引人面向未来的网络结构。而这种结构的核心就是IMS，一种能够帮助运营商逐步过渡到全IP(ALL-IP)网络的新技术标准。其原因显而易见，他们希望能够利用一个简单有效、低成本而且标准化的网络处理所有业务，标准化可以使运营商不受供应商的限制，随时选用最好的网络设备。但是，要将传统网络中所有网元升级到IP，     

智能城域网网络原子能力资源池测试与应用

在智能城域网中构建网络原子能力资源池，通过网元服务编排器控制通用服务器构建网络原子能力。目前已完成对家庭宽带业务承载的现网测试，vPPPoE、vNAT在功能和性能方面均能满足现行家宽业务的需求。并且资源池可以实现网元故障时的灵活切换，在服务器资源足够的情况下，可以灵活快速地进行网元扩容以满足业务增长的需求。     

A Novel Self-Organizing Approach to Automatic Traffic Light Management System for Road Traffic Network

Wireless Personal Communications - Traffic network is basically a “network of networks” consisting of mainly two types of networks: road network and a travel network. Due to drastic...     

Dynamic network composition for beyond 3G networks: a 3GPP viewpoint

The 3GPP network specification is currently undergoing major updates toward beyond 3G. The evolved 3GPP network will support interworking with multiple including non-3GPP - radio access networks, and support mobility between them. It will furthermore support personal area networks and moving networks. Generally, 3GPP is moving in the direction of an all-IP network. This article gives an overview of current beyond 3G trends in 3GPP, and particularly introduces a new 3GPP study item on network composition. The concept of network composition was developed by the EU project Ambient Networks. Whereas 3GPP until now assumes static networking relations, network composition addresses a dynamic, generic establishment of control-plane interworking between the heterogeneous network types of today, such as 3GPP core networks, non-3GPP operator networks, heterogeneous access networks, and personal area networks     

Immune Algorithm for Solving the Optimization Problems of Computer Communication Networks

The basic problem in optimizing communication networks is to assign a proper circuit for each origindestination pair in networks so as to minimize the average network delay, and the network optimal route selection model is a multi-constrained 0-1 nonlinear programming problem. In this paper, a new stochastic optimization algorithm, Immune Algorithm, is applied to solve the optimization problem in communication networks. And the backbone network vBNS is chosen to illustrate the technique of evaluating delay in a virtual network. At last, IA is compared with the optimization method in communication networks based on Genetic Algorithm, and the result shows that IA is better than GA in global optimum finding.     

WDM光网及多层网络生存性的研究

为了适应多层次网络发展的需要，在讨论WDM光层生存性机制的基础上，针对多层网络联合的生存性机制进行了仔细的分析，提出了一种多层协调的实现办法，并讨论了多层空闲资源设计中的共享问题。     

A Flexible QoS-aware Service Gateway for Heterogeneous Wireless Networks

The integration of different types of wireless access networks, or heterogeneous wireless networks (HWN), is emerging. This article investigates in particular how a combination of UMTS (Universal Mobile Telecommunications System) cellular networks, wireless LAN ad hoc networks, and DVB-H (digital video broadcasting - handheld) broadcasting networks, called UWD networks for short, is constructed and managed to provide users with QoS-aware services. Given the complexity of the UWD networks, a novel policy-based service gateway is proposed. As a software framework sitting over and communicating with the UWD network, this UWD service gateway makes network management decision by reasoning over a set of predefined policies that describe the behaviors of the UWD network. Network variables such as bandwidth, delay, and mobility in policies are fuzzified using fuzzy control theory to make the service gateway (as well as the whole UWD network) more flexible and robust. Both the prototype implementation and the evaluation results indicate the feasibility and effectiveness of the system     

双总线结构工业控制计算机网性能指标评估

对双总线结构工业控制计算机网,给出了其Petri网和高级Petri网的建模及性能指标评估方法。文中考虑了信包缓冲区容量有限、信包最大允许服务时间有限、不同的站点优先级和系统总线故障率等因素影响下的网络性能指标评估问题。克服了以往对网络性能评估的某些局限。讨论了带计数禁止弧的高级随机Petri网(HDSPN)的特性.并对给出的DSPN模型进行了仿真计算,对影响网络性能的系统指标进行了讨论。     

A stochastic multi-scale model of electrical function in normal and depleted ICC networks

Multi-scale modeling has become a productive strategy for quantifying interstitial cells of Cajal (ICC) network structure-function relationships, but the lack of large-scale ICC network imaging data currently limits modeling progress. The single normal equation simulation (SNESIM) algorithm was utilized to generate realistic virtual images of small real wild-type (WT) and 5-HT(2B)-receptor knockout (Htr2b(-/-)) mice ICC networks. Two metrics were developed to validate the performance of the algorithm: 1) network density, which is the proportion of ICC in the tissue; and 2) connectivity, which reflects the degree of connectivity of the ICC network. Following validation, the SNESIM algorithm was modified to allow variation in the degree of ICC network depletion. ICC networks from a range of depletion severities were generated, and the electrical activity over these networks was simulated. The virtual ICC networks generated by the original SNESIM algorithm were similar to that of their real counterparts. The electrical activity simulations showed that the maximum current density magnitude increased as the network density increased. In conclusion, the SNESIM algorithm is an effective tool for generating realistic virtual ICC networks. The modified SNESIM algorithm can be used with simulation techniques to quantify the physiological consequences of ICC network depletion at various physical scales.     

湖北省多媒体通信发展策略及其研究

近年来，湖北省通信网的建设得到了长足的发展。本文作者从省内各网的现状及发展方向和，分析本省多媒体通信网建设的可行性，并作了宏观和微观预测，同时提出了近期（２０００年）和远期（２０１０年）多媒全通信网网络结构发展构想及业务发展策略。     

传感器网络用于网络中心战

平台中心战和网络中心战的最大区别就是传感器、操作员以及决策者三者之间如何联系。文章提出了三种传感器网络的形态结构,论述了传感器网络用于网络中心战的优势,探讨了传感器网络的关键技术和面临的挑战,最后立足我军现有装备给出了对策和建议。     

连通局部通信网络与保证系统可靠性的优化设计

讨论了若干个局部网络合并成一个大网络使之达到系统可靠性限值并使连通费用最小的优化问题，通过采用系统可靠性上界算法加速了优化过程。