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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
  • Can broadcasters use the broadband ISDN?

    Publication Year: 1990 , Page(s): 8 - 10
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

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

    Publication Year: 1990 , Page(s): 107 - 111
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (220 KB)  

    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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  • IBCN introductory steps: overlay networks and physical integration

    Publication Year: 1990 , 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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  • Broadband on the move

    Publication Year: 1990 , Page(s): 206 - 210
    Cited by:  Papers (5)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (420 KB)  

    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

    Publication Year: 1990 , Page(s): 329 - 334
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (348 KB)  

    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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  • Optical facility switching in multi-service broadband networks

    Publication Year: 1990 , Page(s): 228 - 230
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (168 KB)  

    Optical multiplexing in a multi-service broadband network can reduce the cost and regulatory problems of bringing broadband services to the subscriber. Optical switching offers a flexible network management tool releasing the full flexibility and capacity of the medium to the service vendor. Careful consideration of electrical and optical multiplex protocols will identify the most promising network configurations to exploit the technology now coming to market View full abstract»

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  • The application of optical coherent multichannel techniques to future broadband networks

    Publication Year: 1990 , Page(s): 264 - 269
    Cited by:  Patents (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (420 KB)  

    The sensitivity advantage of coherent detection can be exploited to achieve increased transmission distance in longspan systems or increase the data rate of existing links. The combination of higher sensitivity and the tunability and frequency selectivity of the optical heterodyne receiver opens the way to the exploitation of this emerging technology in broadband subscriber networks of the future. The authors discuss the application of coherent multichannel (CMC) techniques to transmission and switching in broadband networks, and present the current status of the R&D of optoelectronic components and fibre optic systems for these applications View full abstract»

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  • Broadband video communications: the constant quality coding question

    Publication Year: 1990 , Page(s): 300 - 303
    Cited by:  Patents (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    The authors analyse the constant quality video coding feature, presenting some of the most promising implementation schemes. Two main approaches to design a video coding scheme suitable for ATM networks, namely, the one-layer coding and two-layer coding are described. The call setup traffic contract negotiation and the policing function for ATM connections are also discussed View full abstract»

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  • A model of a broadband session and of the corresponding charging record

    Publication Year: 1990 , Page(s): 85 - 88
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    The authors aim to develop a generalized model of a data structure which would serve to collect the necessary billing data for an arbitrarily complex broadband session. The generalized nature of the model data structure would achieve the objective of service independence and in that sense be reusable. They discuss some issues which arise in the context of billing. In order to produce the data structure model, they show it is necessary to first develop a model of an arbitrary broadband network session View full abstract»

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  • System architecture considerations for a broadband point-to-multipoint millimetric terrestrial radio system

    Publication Year: 1990 , Page(s): 231 - 236
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (336 KB)  

    Broadband communications may be provided to the subscriber by means of various media including coaxial cable, optical fibre, satellite, or fixed point-to-point terrestrial microwave radio links. Millimetric radio is used where there is a need for short distance communications, preferably with a line of sight path between antennas. It is an alternative to optical fibre with the advantages of flexibility, ease and speed of installation, and has the advantage over the lower microwave frequencies of available spectrum, and smaller, easily mounted antennas, which are less obtrusive. The authors describe some of the characteristics of fixed point-to-multipoint systems operating in the millimetric band and how these could support broadband communications in some areas View full abstract»

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  • Gauss: a single-stage ATM switch with output buffering

    Publication Year: 1990 , Page(s): 248 - 252
    Cited by:  Papers (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (384 KB)  

    A high performance ATM switch architecture, named Gauss, has been proposed. Using traffic observations and known design principles a number of favourable properties have been obtained. Due to a fully interconnected architecture the Gauss ASE (ATM switching element) is nonblocking and can be used for multi and broadcast traffic. Due to its modularity the Gauss ASE can grow towards a large single-stage output buffered switch fabric that can offer low delays and low delay jitter and which is probably easier to manage. The suitability for VLSI has been shown; only two types of integrated circuits are needed. Inputs are allowed to operate asynchronously and, if necessary, loss priority can also be handled. The Gauss ASE can be made fault tolerant by providing spare inputs and outputs View full abstract»

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  • Communication support for multi media applications

    Publication Year: 1990 , Page(s): 115 - 120
    Cited by:  Patents (2)
    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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  • Approaches to simulation of ATM networks and exchanges using distributed processing techniques

    Publication Year: 1990 , Page(s): 317 - 323
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (588 KB)  

    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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  • MCPR-a multimedia terminal for broadband networks

    Publication Year: 1990 , Page(s): 289 - 294
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (420 KB)  

    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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  • IBC services functionalities

    Publication Year: 1990 , Page(s): 97 - 101
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (272 KB)  

    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

    Publication Year: 1990 , Page(s): 3 - 7
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (308 KB)  

    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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  • Techno-economic evaluation of the transition to broadband networks

    Publication Year: 1990 , 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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  • A flexible system concept for an integrated broadband customer premises network

    Publication Year: 1990 , Page(s): 304 - 310
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (440 KB)  

    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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  • System and technology aspects for optical switching in broadband systems

    Publication Year: 1990 , Page(s): 270 - 275
    Cited by:  Papers (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (324 KB)  

    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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  • IBC systems-security from the users view

    Publication Year: 1990 , Page(s): 136 - 141
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (464 KB)  

    The HUSAT Research Institute is involved with several of the EC RACE projects. The paper discusses some of the results concerning IBC security from the CAR project. The CAR acronym stands for `CAD/CAM in the Automotive Industry in RACE' and focuses on the identification of new opportunities made possible by the use of IBC in the domain of CAD/CAM applications as applied to the automotive industry in Europe. The aim of the project is to improve the effectiveness of the European automotive industry by accelerating design-to-production timescales through the concept of `simultaneous engineering'. By doing this it is intended to improve the quality and reduce the costs of the design process. In addition to high speed data communications, the project will also investigate the use of video/voice communications, as a means of strengthening human-to-human interactions in a high tech environment View full abstract»

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  • Quality of service in broadband communications

    Publication Year: 1990 , Page(s): 166 - 171
    Cited by:  Patents (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (460 KB)  

    Quality of service is a broad ranging topic touching on many aspects of the construction, management and use of telecommunications networks. A study of the standards scene concluded that there is no specific methodology leading to specification of QOS parameters, available from the standards bodies. This emphasises the need to develop a suitable methodology for the specification of QOS parameters for the IBC system. The use of existing QOS parameter standards in the context of IBC may need to be very carefully analysed. For example the use of existing telephone quality standards, developed in an environment of circuit switched analogue networks, for use in an ATM based multi-service, multi-vendor IBC, may impose unnecessary restrictions on the development of the network infrastructure, requiring much more sophisticated techniques and standards. The paper is based on the work of the NETMAN Project which is part of the RACE program View full abstract»

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  • International Conference on Integrated Broadband Services and Networks (Conf. Publ. No.329)

    Publication Year: 1990
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    The following topics were dealt with: broadband networks; standards; broadband integrated services digital networks; RACE programme; asynchronous transfer mode; broadband communication services; network management; field trials; access networks; switching systems; transmission systems; customer premises equipment; network modelling View full abstract»

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  • TELEMED-first results from Europe's largest broadband communications project in telemedicine

    Publication Year: 1990 , Page(s): 126 - 135
    Cited by:  Patents (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1032 KB)  

    The TELEMED-Project R0186, being funded under the RACE III European Community cooperative programme, will establish an extensive working communication network between widely dispersed medical experts and medical data resources within Europe until the end of 1992. The overall objective of the TELEMED-Project is to examine the problems which arise when participating physicians communicate over IBCN. The features and requirements specified are analysed in particular, so that an overall cooperative diagnosis and therapy can be realized as an application pilot now. In addition, the consequences of the corresponding organisation and operation of these services on the clinic work, legal, ethical and administrative issues must be examined View full abstract»

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  • Electronic and optoelectronic integration in a broadband local network optical link

    Publication Year: 1990 , Page(s): 237 - 241
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (372 KB)  

    In the area of optical transmission systems, the RACE Project 1012-BLNT (broadband local network technology) was formed by Plessey, Siemens, Italtel and CSELT. The major objective of BLNT is to develop low cost customer access and switch technologies which are capable of supporting narrowband and broadband services. A method has been proposed by which optoelectronic transceivers for use in a broadband customer access connection could be produced at a cost low enough for major market penetration. The key technologies required for this process have been described, and early results showing appropriate performance in all the key elements, namely lasers, waveguide duplexers and silicon bipolar drivers and receivers, together with packaging aspects, have all been demonstrated. Combination of these elements is now in progress, and results from these activities have been presented, indicating the advanced status of all these technologies View full abstract»

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  • A verification of the evaluation tools for evaluating multi-media co-operative authoring emulation

    Publication Year: 1990 , Page(s): 335 - 340
    Cited by:  Patents (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (520 KB)  

    For the development of integrated broadband communication (IBC) services, the usability of the system is one of the main factors which contribute to the success of the system. The authors describe the preliminary results of a multi-author multi-media authoring pilot study which was carried out to verify the candidate evaluation tools to ensure that these tools can be used for evaluating the yet-to-be specified candidate usability principles for IBC services. Based on the assumed usability characteristics, evaluation tools (observation, questionnaires, interview, and objective data recording) were developed and tested. It is suggested that several evaluation tools should be used for complementing each other and accomplishing a more complete and accurate evaluation View full abstract»

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