Telecommunications markets, industry, and infrastructure in Korea

Following the successful deployment of basic telecommunications networks and services in the 1970s and 1980s, Korea's telecommunications sector has undergone significant environmental and technical changes. Among these are the introduction of competition in the telecommunications market, the allowance of foreign ownership of telecommunication services, and the deployment of new networks and services, all within a new legal framework. As demands for more diversified and high-quality telecommunications increase, Korea is now preparing for a major communication infrastructure that can serve as a common network foundation. Named the Korea Information Infrastructure, it is planned to provide a new network foundation that will serve as the core of the information society in the 21st century. This article describes the current status of and future perspectives on the Korean telecommunications markets, industry, and infrastructure     

Telecommunications in Russia

National telecommunications has undergone significant changes. Some of these changes and the main principles of the national telecommunications system are described. First the milestones of the previous years are considered. Afterward, the structure of the public switched telephone network (PSTN), the basis of national telecommunications, is presented. We then deal with statistics and forecasting. Two tables present the development of the main telecommunication networks. A third table allows us to compare telecommunications development in the republics of the former USSR. Three figures show the forecasts of the main indexes of future telecommunications. General evolution tendencies inherent in Russian telecommunications are described next, including new technologies and services. One example related to modern equipment application is described. Finally, we deal with aspects of Russian telecommunications liberalization     

Network time slot allocation in an intelligent network

The research area of telecommunications networks and services is rapidly growing, as new technologies emerge. This article proposes a design for a Time Multiplexed Switch that allocates network time slots in a telecommunications architecture. © 1998 John Wiley & Sons, Ltd.     

Toward management systems for emerging hybrid fiber-coax accessnetworks

Advances in networking and hardware are motivating the development of high bandwidth local access networks that connect subscriber communities to the Information Superhighway. Hybrid fiber-coaxial (HFC) technology is emerging as one of the few economical viable technologies for designing new local access networks. These HFC local access networks are expected to support a variety of services in different spheres in an integrated manner, by drawing upon diverse technologies from the cable, computer, and telecommunications industries: the tree-and-branch network topology is typical of the cable network; intelligence in the end devices is a characteristic of the computer industry; and addressability, global interconnectivity, and quality of service (QoS) are characteristic of the telecommunications industry. It is this combination of diverse services and technologies that poses fundamental challenges in architecting a management system for HFC networks. The design of a management framework for HFC access networks is discussed     

Public networks-dependable?

The dependability of public networks is analyzed. The growing reliance of all segments of society on public telecommunications networks is described. The challenge in maintaining traditional dependability levels in the face of new network constructs having less inherent reliability is discussed. A new measurement for network quality and standards for public network dependability are proposed     

电信转型和下一代网的若干问题研究(下)

3.3IP电信网的商业模型及其相关技术 商业模型是要由技术来支持的,不同的商业模型导致不同技术的产生.Internet是从军网、科研网逐步发展过来的.从本质上来讲,Internet的设计理念是一种非赢利性的系统体系的设计理念,最典型的例子就是引起Internet爆炸性发展的Web的设计就是非赢利性的,电信运营商是无法来经营W eb业务而据此赢利的.Internet的泡沫出现,以及泡沫破灭后,产业的大滑坡,当然是与炒作有关,但最本质的还是技术因素,因为Web是一种不可赢利的技术,要用一个不能赢利的系统赚钱,除了炒作外别无它路可走..COM的大量倒闭,网络公司的相继破产,其根源是商业模型及其相关的技术问题.     

Broad-Band Communication Systems in Great Britain

Great Britain, like other advanced countries, stands on the threshold of rapid changes in the local network driven by the twin forces of technological opportunity, which permit new network architectures and service capability, and demand for new services which can be flexibly and speedily provided. The paper first discusses the commercial and regulatory environment. The development of cable TV networks is then examined, particularly the more advanced forms of networks which support a wide range of interactive services such as videotex, photo videotex, and interactive video. Scenarios for telecommunications networks evolution are then outlined taking account of optical fiber systems and reliable VLSI circuitry developments. The two forms of network are compared and notable points of similarity are highlighted which suggest a natural convergence. Finally, some thoughts are presented on the possible nature of the network from this convergence.     

Service Oriented Testbed Infrastructures: a Cross-Layer Approach for NGNs

Existing telecommunications networks and classical roles of operators are subject to fundamental change. Core network technologies have been re-defined under the label of Next Generation Networks (NGN) and the transition from existing legacy infrastructures towards an all-IP based NGN is ongoing. Following this paradigm shift within telecommunications, new approaches in services and service composition are currently explored for converging network domains to support legacy circuit-switched networks, NGNs, and integration with the World Wide Web (WWW). Furthermore, emerging initiatives as the Japanese Architecture Design Project for New Generation Network (AKARI), U.S.-based Global Environment for Network Innovations (GENI), Germany Laboratories (G-Lab), and the European Future Internet Research & Experimentation (FIRE) envision a Future Internet allowing automatic cross-layer network adaptation on a service-specific basis. In this report, we describe our setup of a service-oriented research facility for services on top of converging networks as a starting point for service composition in inter-domain, federated testbed environments to allow cross layer service and network composition.     

P2P与三网融合

随着互联网的迅猛发展,P2P技术在互联网上的应用超过了Web而成为在流量上占据统治地位的新型应用。同时,P2P技术的影响力不仅限于互联网,还间接地延伸到了电信网和广电网。使用P2P技术的新业务对传统领域带来冲击的同时,也协助解决了三网融合的技术瓶颈。ENUM技术作为跨越互联网和电信网的基础性架构,是融合网络的一条重要的技术途径。将ENUM技术与P2P相结合,可以使P2P共享的优势延伸到电信网络,加速网络融合。     

Telecommunications Network Total Cost of Ownership and Return on Investment Modelling

Building new telecommunications networks and services is an extremely expensive business. Upgrading existing networks can be just as costly. They both require huge amounts of capital expenditure. This is just the beginning; on-going operations and maintenance charges can be just as high over a long period of time.Before taking the plunge, companies have a need to assess how much investment really is required. They also have a keen interest in reducing the amount of investment to the lowest feasible levels compatible with fulfilling the company's needs.A crucial part of any network design and its associated business case is a sound analysis of the financial up- and down-sides and risks. BTexact applies a highly structured financial modelling technique, originally developed for the City of London, to collate the costs and build the return on investment analysis, specifically for telecommunications infrastructure and services.This paper outlines the modelling technique, and presents a number of applications to a variety of network and service developments, that are changing the face of telecommunications.     

Signaling in emerging telecommunications and data networks

This paper discusses the evolution of signaling in modern telecommunications and data networks. It discusses the new capabilities introduced in both narrow-band and broad-band networks and their implications. This paper contrasts work being done in the telecommunications sector of the International Telecommunications Union, ATM Forum, and Internet Engineering Task Force and the motivations for different efforts in each group. The emerging network technologies and services pose a number of challenges in traffic characterization and analysis; these are also highlighted     

Supporting applications with network intelligence and B-ISDN

The year 2000 is swiftly approaching and, with all the expectations it brings, many telcos are gearing up to provide telecommunications networks that will satisfy the majority of demands that new feature-rich applications will place upon them. To some people, supporting application requirements for a telecommunications netwrok might mean adding more intelligence to the network. Others may crave to transmit data at faster speeds, communicate more freely on the move, or be able to mix and match the appropriate network infrastructure as they, or their applications, choose to do so. These diverse application requirements are shaping the strategies being pursued by telcos to deliver integrated telecommunications networks for the next millennium. After looking back at some of the developments taking place within the broadband and network intelligence domains, this paper summarises some of the application and service requirements that must be addressed when building future telecommunications networks. From the plethora of technical proposals aimed at developing the necessary environment to fulfil these requirements, this article explores the alternatives. Of course, for all of these alternative routes there will be many questions, technical or otherwise, that yet remain unanswered. Some of these issues will be discussed and various options will be considered to provoke thought or socialise possible solutions.     

城域网对DWDM系统的技术要求

城域网（MAN）概念是由计算机网络演化而来，数据通信等电信新技术的发展赋予城域网新的内涵，DWDM应用于城域网时有一些不同的功能要求，包括Metro DWDM系统的结构，光纤技术，器件技术等关键技术。     

我国电信标准化的发展及有关建议

电信网在支持越来越广泛业务要求的同时，要实现降低网络成本，提高网络效率，共享网络资源的目标，根本保证是电信网的标准化。作者扼要介绍了我国在加强电信标准化，促进通信网络发展方面取得的长足进步，并提出对今后进一步加强电信标准化工作的几点建议。     

运营商电信网业务和互联网业务融合发展的方式

文章探讨了运营商切入互联网业务运营,达到融合电信和互联网发展的一种可能,即通过融合及时消息和社交网络,并以之为基础,逐步融合发展电信网业务和互联网业务的可能路线;并介绍了这种发展方式的背景、运营商的优势、可能遇到的问题。讨论了以这种方式进行业务演进,从而实现广义上的三屏合一或者多屏合一的业务融合方式,这也是一种新的融合的方式。     

一个新的集成网络管理体系结构

已存在的三个网络管理体系结构,基于Ｉｎｔｅｒｎｅｔ／ＳＮＭＰ,基于ＯＳＩ／ＴＭＮ的网络体系结构不能独立完成对计算机和电信网的综合管理。基于新出现的计算技术和ＴＭＮ的逻辑分层管理体系结构,提出了一个能够综合管理计算机网和电信网的集成网络管理体系结构,并分析此管理体系结构的特点。     

Standards as an Enabler for Next Generation Networks

The recession in the telecommunications industry has meant that the traditional telecommunications operators (BT, AT&T, FT, etc) have found it difficult to provide the resources needed to participate effectively in the standards process. Thus, they are not influencing international standards to get what is needed to build the next generation of telecommunications networks. This could mean that the introduction of new services is delayed and that customers may have to pay more for their services than is necessary. A clear priority now is to re-engage operators in standardisation so that the equipment needed to build next generation networks (NGNs) is standardised to operator requirements. This is the only way to get network build costs down to a level where operators can afford to install it. This paper looks at ways of achieving this goal.     

Personal communications services through the evolution of fixed andmobile communications and the intelligent network concept

New telecommunications services tend to consider fixed network subscribers' requirements as well as mobile network subscribers' requirements. On one hand, subscribers of fixed networks would like to benefit from the mobility offered in mobile networks. On the other hand, mobile subscribers would like to access to services inherent in fixed networks. Personal communications services (PCS) meet this trend while allowing fixed and mobile convergence. In this environment, the application of intelligent networks (INs) to fixed and mobile networks is very convenient to realize PCS. Thus, the natural advancement of telecommunications systems (fixed and mobile) consists in the definition of new telecommunications architectures which take into account technologies from both fixed and mobile environments. This article studies how the IN is used to support mobility and interworking for PCS. Although mobility management already exists in cellular networks like GSM, it is desirable to use the IN concept to introduce flexibility. In addition, the IN allows the introduction of new supplementary services in PCS. Furthermore, the IN concept can be utilized to provide necessary networking functions for the integration of fixed and mobile networks. This article also highlights the involvement of IN in the definition of the global communications systems such as Telecommunication Information Networking Architecture (TINA), Universal Mobile Telecommunications System (UMTS), and International Mobile Telecommunications in the year 2000 (IMT2000)     

三网融合趋势下广电运维管理的思考

在三网融合的趋势和背景下,广电网络公司正面临前所未有的机遇和挑战,确保广播电视网络的安全优质,是网络规模、承载能力、综合业务发展的基石和根本。近几年,中国各个通信运营企业都初步构建了具有自身特点的现代通信网络运维管理体系,而广电这个从事业单位转制的企业,运维管理才刚刚起步,为了满足三网融合形势下广电网络全业务发展战略的要求,广电应该构建具有自身特色的网络运维管理体系。     

无处不在的终极网络——泛在网

泛在网络包含电信网、互联网以及融合各种业务的下一代网络,并涵盖各种有线无线宽带接入、传感器网络和射频标签技术(RFID)等。随着国民经济的发展和社会信息化水平的日益提高,构建一个以无处不在的网络社会为目标的信息化社会的议题日益成为一些国家的政府、学术界以及运营企业热烈探讨和实践的课题。