ISO/IEC TR 29181-7:2013

Information technology — Future Network — Problem statement and requirements — Part 7: Service composition

ISO/IEC TR 29181-7:2013 describes the problem statement, requirements and a functional building block for the Future Network (FN) from the perspective of service composition. The goal of ISO/IEC TR 29181-7:2013 is to: analyse and classify problems of the current solutions on the service composition, identify requirements on the service composition for the FN, describe some technical aspects of the service composition for the FN, and propose a functional building block of the service composition including functional components and their reference points among them. ISO/IEC TR 29181-7:2013 also introduces various on-going standardization and research activities related to service composition.

Technologies de l'information — Réseaux du futur — Énoncé du problème et exigences — Partie 7: Composition des services

General Information

• Status: Published
• Publication Date: 08-Apr-2013
• ICS: 35.100.30 - Network layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 6060 - International Standard published
• Start Date: 09-Apr-2013
• Due Date: 11-Oct-2013
• Completion Date: 11-Oct-2013

Standards Content (Sample)

TECHNICAL ISO/IEC
REPORT TR
29181-7
First edition
2013-04-15
Information technology — Future
Network — Problem statement and
requirements —
Part 7:
Service composition
Technologies de l'information — Réseaux du futur — Énoncé du
problème et exigences —
Partie 7: Composition des services

Reference number
©
ISO/IEC 2013
©  ISO/IEC 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any
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ii © ISO/IEC 2013 – All rights reserved

Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Abbreviations and acronyms . 2
5  Overview . 3
6  Problem Statement . 7
6.1  General problems . 7
6.2  Scalability . 10
6.3  Dynamics . 11
6.4  Security . 11
7  Requirements of service composition for the FN . 11
7.1  General requirements . 12
7.2  Specific requirements . 13
Annex A (informative) Related standardization and research activities . 18
A.1  IEEE P1903 (NGSON) . 18
A.2  TMF Service Delivery Framework . 19
A.3  ITU-T NGN SIDE . 19
A.4  ATIS SON Forum . 20
A.5  Related research activities . 20
A.5.1  Service-Oriented Architecture (SOA) paradigm . 23
A.5.2  Service Oriented Network Architecture (SONATE) . 24
A.5.3  4WARD . 25
A.5.4  Web Service Composition . 27
A.5.5  Service Composition Approaches . 28
Annex B (informative) Technical aspects of service composition in FN . 34
B.1  A common protocol for supporting service composition . 34
B.2  Service Composition approaches . 34
B.3  Composing network functionality . 35
B.4  Composition scope and service granularity . 36
B.5  Place for composition . 36
B.6  Composition execution epochs . 37
B.7  An architecture based on services . 37
B.7.1  Composition of transport and application services . 39
B.7.2  Service identification . 40
B.7.3  Service description . 41
B.7.4  Service allocation . 42
Annex C (informative) Functional Building Block of Service Composition in FN . 43
C.1  Functional Components . 43
C.1.1  Service Manager (SR). 43
C.1.2  Service Registration Manager (SRM) . 44
C.1.3  Context Manager (CM) . 44
C.1.4  Reference Points . 45
Bibliography . 46

© ISO/IEC 2013 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
In exceptional circumstances, when the joint technical committee has collected data of a different kind from
that which is normally published as an International Standard (“state of the art”, for example), it may decide to
publish a Technical Report. A Technical Report is entirely informative in nature and shall be subject to review
every five years in the same manner as an International Standard.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC TR 29181-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems.
ISO/IEC TR 29181 consists of the following parts, under the general title Information technology — Future
Network — Problem statement and requirements:
 Part 1: Overall aspects
 Part 3: Switching and routing
 Part 4: Mobility
 Part 6: Media transport
 Part 7: Service composition
The following parts are under preparation:
 Part 2: Naming and addressing
 Part 5: Security
iv © ISO/IEC 2013 – All rights reserved

Introduction
The development of the networks during the last years has shown that it becomes harder to integrate new
functionality in order to fulfill the demands of new applications and the capabilities of new transport
technologies. Especially the core mechanisms are hard to change as it lies in a rigid and ossified architecture.
The current picture of the networks shows a large, heterogeneous, dynamic and complex distributed system.
Lots of patches aimed to amend different issues that have arisen during last years. Current networks have to
deal with new services, applications and computing paradigms such as new modes of interaction,
identification, context-awareness, energy efficiency, seamless service discovery and composition, mobility,
ubiquity, etc. At this point, current networks must look for clean solutions to known issues.
The development of a new network architecture has been discussed for some time now. Several proposals
are considered in this sense, evolutionary (incremental) approaches and revolutionary (clean-slate). Currently,
the general idea in SC6 WG7 is to standardize an architecture to solve current networks faults.
The Future Network (FN) will define a scalable, flexible and robust architecture which will aim at providing
services taking into account the changing conditions of the context and thus, offering customized
communication and seamless delivery of data. To achieve this, it is necessary to provide service composition
capabilities by means of a specific framework that will contribute to create a scalable, modular, and service-
aware FN.
The FN introduces a new architecture where the necessary functionality for establishing communications in
any node connected to the network (user devices and network elements), is not fixed but dynamically
composed, as appropriate to user service requirements, network transfer capabilities and surrounding context
in the user and the network environments. In essence, a service-oriented paradigm is followed.
Communications are accomplished by assembling appropriate atomic services, each performing a specific
communication function. As such, service functionalities can be combined to create higher level
communication services, which in turn can be combined with other services as well to enrich existing services
or to create new composed ones, until the whole spectrum of required functionality for end-user
communications is in place
Service composition is the technology that supports the composition of those activities required to reuse and
combine existing services to enrich current services and to create new services. This technology provides a
natural way of combining existing services including both atomic and composite services. Such kind of
recursive composition of composite services is one of the most attractive and challengeable features of the
service composition, allowing to rapidly and easily create new services. Thus, the service composition
provides benefits on improved usability of existing services, faster time for service creation and reduced time
to market for new services.
© ISO/IEC 2013 – All rights reserved v

TECHNICAL REPORT ISO/IEC TR 29181-7:2013(E)

Information technology — Future Network — Problem
statement and requirements —
Part 7:
Service composition
1 Scope
This part of ISO/IEC TR 29181 describes the problem statement, requirements and a functional building block
for the FN from the perspective of service composition. The goal of this part of ISO/IEC TR 29181 is to:
a) analyze and classify problems of the current solutions on the service composition,
b) identify requirements on the service composition for the FN,
c) describe some technical aspects of the service composition for the FN, and
d) propose a functional building block of the service composition including functional components and their
reference points among them.
This part of ISO/IEC TR 29181 also introduces various on-going standardization and research activities
related to service composition.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
...