A service-oriented approach for modelling telecommunications value-networkS

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A service-oriented approach for modelling
telecommunications value-networkS
ITS 15th Biennial ConferenceBerlin, Germany
September, 4-7, 2004

• Claudio de A. Loural
• Giovanni M. de Holanda
• Esther Menezes
• Cristiane M. Ogushi
• Fundação CPqD - Centro de Pesquisa e
  Desenvolvimento em Telecomunicações
• Campinas, SP - BRAZIL

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Introduction

• Telecommunication systems are large and complex
• Different approaches according to different
  academic disciplines
• Role of services in present telecom business is
  largely recognized
• Convergence between telecommunications,
  information technology and broadcasting requires
  new ways to look at the sector
• Need of a service modelling approach to telecom
  sector
• Represents the principal system elements and
  their relationship
• Helps to explain how it works
• Can serve as a basis for related, but more
  specific, models
• Allows a common ground among several visions.

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(Tele)communications models

• Engineering models
• Shannon
• Media and social / mass communications models
• Shannon
• Osgood-Schramm
• Berlo
• Economic structural models
• Fransman (layers)
• Hilbert-Katz (layers / multidimensional)
• Value-chain models (Porter and alike)
• European Comission Green Paper on Convergence
• Kawashima (MIT)
• Service chain
• Production chain electronic complex approach

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Service chain
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Proposed reference model

• Basic concepts
• Networks
• interconnected agents, feedback and multiple
  causality
• Value networks
• Other way to call a production network
  emphasis move from operations description to the
  tangible or intangible value added at each
  transaction.
• Chain representations tend to reproduce the
  internal logic of a firm productive
  organizations network representations tend to
  reflect interactions between firms (apud
  Sturgeon)
• Value networks rely on fragmented rather on
  vertically integrated forms of industry
  organization (Berger et al.)

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Proposed reference model - II

• Basic concepts (cont.)
• Service attributes (apud Hauknes)
• intangibility or immateriality
• economic exchange properties
• ephemerality or temporary existence of the
  service
• intensity of user-producer linkages
• Exchange between actors (apud Allee)
• Goods, services and revenue
• Knowledge
• Intangible benefits

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Proposed model

• Proposal
• To apply value network concept to
  telecommunications and telematics
• To adopt the principle that people uses
  telecommunications as services and applications
• In the proposed model
• Content and revenue exchange service
  relationships
• Knowledge exchangetechnological stimuli and
  demands

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Proposed model - I domains meta-model

• Domains of communication process
• Content
• Interfaces
• Transport (network)

Content domain
Information source and destination
Interfaces domain
Content formatting and transport codification
Transport domain
Information flow
Information transport
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Proposed model - II roles
Roles and content flow in telephony service
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Proposed model - III relationships
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Example internet content retrieval
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Service value network and ICTs
Network roles and actors demand functionalities f
rom technological substrate
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Conclusion

• Reference model developed to represent
  telecommunications from a service point of view
• emphasis on relationships
• non sequential roles
• focus on communication process, rather than
  communication goods
• ICTs viewed as general substrate providing
  functionalities and functional systems to service
  network roles and actors
• Understanding of network integration and
  coordination needs further studies
• adequate regulatory framework