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Integrated Broadband Services and Networks, 1990., International Conference on

Date 15-18 Oct 1990

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Displaying Results 1 - 25 of 62
  • Communication support for multi media applications

    Page(s): 115 - 120
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (440 KB)  

    The emerging high speed networks and multi media services enrich a variety of new applications such as office, engineering, control, administration, teaching, etc. The authors focus on the communication aspects of applications in engineering, in particular in CAM (computer aided manufacturing). They present a concrete multi media scenario. Considering the data streams identified in this application they derive the main requirements for the communication system and describe, what support a communication system has to provide to fulfil these requirements. Based on the discussion of the appropriate communication services and protocols, they propose a high speed communication architecture. Finally a high speed transport system is presented as a foundation for the realisation of the high speed communication system View full abstract»

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  • National research project for the realisation of an ATM test-bed in Italy

    Page(s): 190 - 195
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    The authors describe the objectives and the early technical results of a project for the realization of an ATM (asynchronous transfer mode) testbed, which is being carried out in Italy with the support of the national research organization (CNR) and with the participation of the main organizations operating in the telecommunication field. After presenting the general structure and the solutions adopted for the testbed, the authors describe the main characteristics of its building blocks under development: the switching node with its ATM switching fabric and control units, the access network with the related interfaces and protocols, the customer equipment composed which is composed of ATM workstations, ATM terminal adaptors and LAN gateways, and the interworking unit connecting the testbed to the telephone network. The policing functions adopted are also discussed View full abstract»

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  • Can broadcasters use the broadband ISDN?

    Page(s): 8 - 10
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    The author looks at broadcasters' network requirements and discusses the use of digital transmission and the influence of ATM (asynchronous transfer mode) adaptation on BISDN. In particular, problems of cell loss and timing transfer are discussed along with designing codecs for ATM transmissions. Transmission using synchronous digital hierarchy (SDH) and the integration of SDH networks with BISDN are also discussed View full abstract»

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  • Phasing-in the universal broadband ISDN: initial trials for examining ATM applications and ATM systems

    Page(s): 200 - 205
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    Many countries have started long-term planning for an intelligent integrated broadband network for all services-the universal broadband ISDN. This broadband ISDN is characterized by utilizing the synchronous digital hierarchy (SDH) for transmission and the asynchronous transfer mode (ATM) for multiplexing and switching. The recognizable interest associated with broadband applications and broadband systems is accompanied by elements of uncertainty (acceptance, demand, technology, organization, economy), the realization of ATM pilot applications as well as of ATM prototypes and ATM test networks is both advisable and urgent. The author deals exclusively with these two subjects View full abstract»

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  • Usage Reference Model for integrated broadband communications

    Page(s): 102 - 106
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (352 KB)  

    The Usage Reference Model (URM) project (R1077) is responsible for consolidating the results of all the usage studies in RACE (application analysis, application pilots, usability studies) in order to provide operational requirements for IBC infrastructure design. Operational Requirements are defined as descriptions of the desired behaviour of a system from a user's perspective. Prior to describing how they can be produced the authors address two issues which arise from the notion of `a user's perspective'. Firstly, they consider the level of the application. Secondly, they address the specification of a communication infrastructure, so providing a description of the desired behaviour of a system from a user's perspective View full abstract»

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  • Approaches to simulation of ATM networks and exchanges using distributed processing techniques

    Page(s): 317 - 323
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    The authors consider two related simulation applications, exploiting the concurrency inherent within systems, using a network of transputers. The first application is a distributed simulator for modelling the operation of an ATM switch architecture which uses a matrix of buses. The switch is decomposed into its component elements which are treated as distinct processes and placed upon separate transputers. To overcome the limiting connectivity of transputers, special routeing processes are introduced. The second application is designed to model subsets of ATM based telecommunications networks. It is primarily a distributed queueing network simulator which exploits independence between spatially separate events to process them concurrently. Although the simulator is written in OCCAM, it allows differing system topologies to be modelled without resorting to recompilation of the simulator program View full abstract»

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  • The Finnish strategy for fibre to the home

    Page(s): 196 - 199
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    A consortium consisting of PTT Finland, Regional Telephone Companies, with Nokia, Teleste and Lohja as industrial partners and the State Technical Research Center of Finland has been studying a strategy for fibre to the home. The strategy is aimed at new residential areas, where by a smooth introduction of fibre to the subscriber access network, the target is to obtain a penetration of a few percent in the later 1990s, when the implementation of broadband services to homes may start. The introduction of fibre to the subscriber access network will be done purely for economic reasons. These will be achieved by means of the advantage provided by implementing a rational common fibre network for telephony and cable-TV. The authors discuss these basic services as well as the cost analysis and the strategy for implementing this technology View full abstract»

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  • MCPR-a multimedia terminal for broadband networks

    Page(s): 289 - 294
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    The author outlines the general architecture and major solutions adopted for the MCPR (Multimedia Communication Processing and Representation) system which is being developed within a RACE project. An object oriented paradigm has been chosen for the design of the software components. He presents the services provided by the MCPR system, system block diagram of the terminal, multimedia object arrangement and the communication protocol structure. The envisaged configuration of some multimedia terminal adaptors is included View full abstract»

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  • The broadband user-network interface projects in RACE

    Page(s): 11 - 16
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    The main aim of the RACE programme is to develop integrated broadband communications (IBC) for commercial introduction in Europe by 1995. From the outset, IBC has been seen as being based on a broadband integrated services digital network (B-ISDN) conforming to CCITT and other international recommendations and standards. Within RACE a number of individual projects are concerned with IBC development and implementation strategies including one in particular which is specifying the broadband user-network interface (BUNI). A second project, which is part of the pre-normative functional integration group of RACE projects, is known as the BUNI demonstrator and is concerned with demonstrating and verifying the BUNI specification. The authors outline the key issues, major problems and successes of these two projects View full abstract»

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  • IBC services functionalities

    Page(s): 97 - 101
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    Illustrates a new and powerful approach for the introduction of integrated broadband communications (IBC), by defining services and the relevant network capabilities in a modular fashion. The key notes are first to build `flexibility' into service provision, by defining the individual components that may be mixed and matched by users in support of their specific requirements. Secondly to decouple the definition of network functions from technology and allocation scenarios. The paradigms of the intelligent network concept are adopted. The work reports the achievements of Project R1044 in the RACE Programme View full abstract»

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  • Standards for the broadcaster in a broadband ISDN

    Page(s): 3 - 7
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    The author describes the relation between standards for professional applications and consumer applications and discusses the pace of change. He also discusses the activities of CMTT in presenting the broadcaster's requirements such as quality objectives, video coding, bit rates, network bit-error characteristics and BISDN based on ATM (asynchronous transfer mode) transmissions View full abstract»

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  • An application of broadband networks in the press world. The DIMPE project

    Page(s): 107 - 111
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    For a long time the publishing industry has been an area of closed system architectures, few standards and high equipment costs. There is now a trend to bring the benefits of new technology and open networks to these systems. This trend is due basically to the widening of the electronic publishing market and the emergence of wideband facilities (necessary for transmitting the large data files that are the norm in publishing), laying the foundation of a new synthesis. The DIMPE project is seen as one of the catalysts of this synthesis View full abstract»

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  • Broadband network simulation using parallel transputer technology

    Page(s): 324 - 328
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    An array of transputers has been used as the simulation engine in the modelling of broadband ATM networks. A message passing system has been developed for the control and operation of the simulation. The proposed system, called ATM Network Emulator Simulator Hybrid System, can be used by network developers as a flexible verification tool for testing prototypes produced for various parts of a broadband network View full abstract»

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  • Techno-economic evaluation of the transition to broadband networks

    Page(s): 35 - 40
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (496 KB)  

    Techno-economic evaluation of broadband networks and services-and more particularly the analysis of strategies for the transition to broadband-has been undertaken by several groups within the European Commission's programme RACE (Research into Advanced Communications-Technologies for Europe). In particular , Project R1014 (Atmospheric), under the leadership of prime contractors METSA (France), is studying the introduction of broadband networks in Europe using ATM. Special reference is made to the stages of evolution and the issue of interworking with existing networks. The authors describe briefly the objectives of modelling in the work of R1014 and the main features of the modelling tool; they present preliminary results obtained from the modelling work. The work is supported by other project partners (including Ericsson, Ellemtel and STC Telecommunications), and by Analysys Ltd (a telecoms and economics consultancy based in Cambridge, UK). They also indicate briefly some of the other applications of techno-economic modelling in RACE View full abstract»

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  • IBCN introductory steps: overlay networks and physical integration

    Page(s): 9 - 34
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    The authors review the options that have been identified for introducing broadband capabilities in telecommunication networks. They present ideas, concepts, proposals and results from the RACE Project R1044 IBCN Development and Implementation Strategies, and especially from the workpackage RCD (Reference Configuration Development) as provided n Deliverables three and four (1) and (2). Project R1044/RCD has first developed the IBCN Target Reference Configurations (RC) building on initial work performed by the CEPT Groupe Special des Communications a Large Bande-Permanent Nucleus. During 1989 Project R1044/RCD focused short and medium term RC. Proposals, allowing a smooth introduction of the IBCN have been analysed. The graceful evolution towards the target RC was of major concern View full abstract»

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  • Standardization of broadband networks in ETSI-NA5

    Page(s): 1 - 2
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    The European Telecommunications Standards Institute (ETSI) is the European standardization body for telecommunications. The internal organization of ETSI is based on technical committees (TCs) which are subdivided in to sub-technical committees of the TC Network Aspects (NA) and is in charge of the standardization of broadband networks. The studies in this area started in CEPT in 1984 in a special study group called Groupe Special des Communications a Large Bande and were transferred to ETSI at the beginning of 1988. More than 150 experts are today participating in the meetings of NA5 and are contributing to the work programme dealing with the standardization of broadband-ISDN (B-ISDN) and metropolitan area networks (MANs) View full abstract»

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  • The use of advanced information processing techniques in maintenance systems for integrated broadband networks

    Page(s): 160 - 165
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    There is a growing trend to use advanced information processing (AIP) techniques as a means to contain and manage the complexity of telecommunication networks. The RACE project AIM is concerned with the application of such techniques to maintenance of the integrated broadband communication network (IBCN). A prototype of a Generic Maintenance System Builder (GMSB) is currently being developed, which implements a representative set of AIP techniques. The purpose of the system is to demonstrate how some generic concepts can be applied to a great variety of situations, and how they can be tailored to vendor, carrier or network specific problems. Within the context of the project, these concepts will be applied to two specific telecommunication systems: the DSSS (Digital Subscriber Switching Subsystem) of System X, and the Berkom network (B-ISDN). The paper describes the GMSB knowledge based system and some representative AIP techniques that are considered in the AIM project, highlighting their relevance to network maintenance tasks. These techniques are: object oriented modelling and inference and control mechanisms View full abstract»

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  • Access networks-beyond MANS to solutions compatible with B-ISDN

    Page(s): 58 - 62
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (376 KB)  

    Broadband integrated services digital network (B-ISDN) access is likely to commence with the interconnection of local area networks (LANs) via metropolitan area networks (MANs). As demand for B-ISDN service increases it will become necessary to extend B-ISDN service economically to smaller customers. This provides two specific drivers: fair access to available bandwidth is required when sharing access to a single network terminator in a single customers premises and customers in separate premises will need to share access to the capacity of a single B-ISDN port via a local access infrastructure such as a passive optical network (PON). The authors examine the problems presented and describe a solution for each of these complimentary scenarios. Finally it is shown how a graceful evolution can take place from a scenario of initial shared access toward an eventual dedicated access solution View full abstract»

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  • Evolution of the network supporting SMDS to B-ISDN

    Page(s): 79 - 83
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    The authors present a possible evolution scenario for the network access architecture and protocol supporting switched multi-megabit data services (SMDS) and a proposal for the interworking of the metropolitan area network (MAN) and asynchronous transfer mode (ATM) technologies. In doing so, they briefly described the broadband integrated service digital network (B-ISDN) and SMDs interface protocols and the respective access architectures. A key underlying assumption is that the SMDS features and attributes seen by the customer remain uniform throughout the evolution to B-ISDN View full abstract»

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  • Broadband technology within the DIDAMES project (RACE R1060)

    Page(s): 148 - 152
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    The DIDAMES project is designed to demonstrate, by means of videoconferencing, the application of local and wide area broadband communications-and the integration of narrowband networks-within the application environment of distributed industrial design and manufacturing processes of electronic subassemblies (PCB-CAD/CAM), including their related distributed management activities. The distributed application being realized by the DIDAMES project requires the use of high performance international communications links, as would be provided by IBCN. It continuously generates substantial bursts of data traffic on the wide area network. In order to bring the full benefits of the IBCN to the user, state of the art local area networks are being selected, such as needed for the efficient implementation of the application pilot. Wherever the bandwidth available will turn out to be bottleneck, very advanced real time data compression techniques and/or delta coding techniques will be applied View full abstract»

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  • Broadband on the move

    Page(s): 206 - 210
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    The authors present the two pronged approaches adopted in the RACE mobile project to define the mobile broadband system (MBS). Work to date has concentrated on the the feasibility of such a system operating at millimetre wave frequencies, and on how the system might be implemented at a functional level. The authors discuss radio path modelling, channel modelling and equalisation, MBS fixed network architecture and security, and the distributed database View full abstract»

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  • Modelling the bursty characteristics of ATM cell streams

    Page(s): 329 - 334
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    The authors present a study whose main objective is to specify a test-bench which would be useful to design, evaluate, and test devices in an ATM environment, in particular new switching structures. Because of real traffic modelling complexity they focus this study on simple source models whose parameters may be set by having information about the bursty characteristics of traffic cell streams. A mechanism for measuring these characteristics is proposed, and different strategies for the model parameter assignment are tested and compared View full abstract»

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  • A flexible system concept for an integrated broadband customer premises network

    Page(s): 304 - 310
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    A system concept is presented which aims at providing an evolutionary strategy towards the forthcoming IBCN which will be based on ATM techniques, by offering a way for the continuing use of preexisting components in the new broadband environment and minimizing complexity and costs for their integration into future broadband networks. The concept is open to a number of possible evolutionary scenarios, with different weights of ISDN and data communication services. Flexibility is assured also by the proposed solution for the ATM switch. Although physically centralized, the basic switch is based on a parallel ring that interconnects a number of access modules on a 32 bit wide backplane running at 155.52 Mbit/s. Whenever technically and economically convenient, the backplane can evolve to a fully distributed backbone network, more in line with the concept of LANs View full abstract»

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  • The use of broadband communications in a financial dealing environment

    Page(s): 112 - 114
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    Outlines some uses for the new and developing broadband communications capabilities, within a financial dealing environment. The paper is based on work developed under the European Commission's RACE (Research and Development in Advanced Communications Technologies in Europe) programme, under project DIVIDEND. The heavy requirement of the financial dealing community for wide area communications in various forms leads to the need for complex, but flexible, networks. These networks will be required to handle computer data, text, document image and moving image as well as voice communications. Users have very limited space available, and no space for an extra terminal. This implies not only multimedia communications, but also multimedia devices. The initial view that video was the important application for broadband has been modified. Video is now seen to be as an important component in what is a multimedia environment View full abstract»

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  • System and technology aspects for optical switching in broadband systems

    Page(s): 270 - 275
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    The authors describe the potential application of optical switching systems in broadband networks and discuss the aspects of power consumption and costs. They also describe basic switching principles and specific problems in time division systems with STM (synchronous transfer mode) or ATM (asynchronous transfer mode). Conceptual switching alternatives for optical switching networks as well as their addressing and routing methods are discussed in detail View full abstract»

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