1. Arve Meisingset WP3/10 chairman Telenor R&D, Norway
Middleware
Arve Meisingset
WP3/10 chairman
Telenor R&D, Norway

2. Middleware Definitions
Here:
Software that supports process interactions
Alternatives:
Software that hides communication protocols
Software that replaces communication protocols
Software that hides computer platforms
Software that provides a technology independent programming environment
Software that supports Open Systems Interactions
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

3. Session Initiation Protocol SIP IETF RFC 2543
Applications
Clients
Service layer
SIP
Application
Broker
Function
Call control
Signalling Gateway
Function
Call Control
Signalling Gateway
Function
Call Control
Switching & Routing
Media
Gateway
Function
Media
Server
Function
Media
Gateway
Function
Associated to HTTP and SMTP
Compete with H.323 and SS7
Applied in 3GPP
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

4. Open Service Architecture OSA 3GPP
Applications
Interfaces
OSA
Server
Service Capability Servers
API
Network
HLR
HLR
CSE
Application
Mobile networks
SCSs:
Call Control, Data session, User Location, User Status, Terminal Capabilities, Message Transfer
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

5. Parlay Forum Applications API Framework Service Interfaces Network
<discovery, security, managebility>
Service Interfaces
<call control, mobility, messaging>
Internal Interfaces
Network
Resource
Resource
Resource
Application
Convergence of fixed networks
Initiating organisations
BT, Microsoft, Nortel Networks, Siemens, Ulticom, …
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

6. Multimedia Home Platform ETSI DVB
Home PCs
API
Middleware
Network
Content provider software
Content provider software
Application
Digital Video Broadcast, interactive return channels
Technologies
Java RMI, MPEG, IP
Based on
DAVIC, ISO, ITU-T SG16
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

7. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Jini
Appl
Jini
Java OS HW
Client
Applications 3
Lookup
Lookup
Service 4 1 2
Discovery and Join
Discovery
Service
Join
Service
Service
Provides
Discovery, join, lookup, software distribution and communication
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

8. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
TMN SG4
Work Station Functions f x
TMN
Domain
OSS 1
OSS 1
OSS 1 q
Network
Resource
Resource
Resource
Application
Management
Collaboration
TeleManagement Forum
Protocol neutral specification
CMIP, CORBA, SNMP, tML
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

9. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
ODP: Framework viewpoint language, functions, transparency prescriptions Q14/7 revised
SG4 adaption G.850 series
Entreprise Viewpoint
Information Viewpoint
Computational Viewpoint
Engineering Viewpoint
Technical Viewpoint
ODP
’System’
Describe Interacting processes:
Concurrency, lack of global state, partial failures, asynchronisity
Does not necessarily ensure global consistency
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

10. ODP: Open Distributed Processing Q14/7 revised
Skip!
[X.901] Recommendation X.901 (08/97) - Information technology - Open distributed processing - Reference Model: Overview
[X.902] Recommendation X.902 (11/95) - Information technology - Open distributed processing - Reference Model: Foundations
[X.903] Recommendation X.903 (11/95) - Information technology - Open distributed processing - Reference Model: Architecture
[X.904] Recommendation X.904 (12/97) - Information technology - Open distributed processing - Reference Model: Architectural semantics
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

11. ODP: Open Distributed Processing
Skip!
[X.904 Amend.1] Amendment 1 (03/00) to Recommendation X Computational formalization - To be published
[X.910] Recommendation X.910 (09/98) - Information technology - Open distributed processing - Naming framework
[X.920] Recommendation X.920 (12/97) - Information technology - Open distributed processing - Interface definition language
[X.930] Recommendation X.930 (09/98) - Information technology - Open distributed processing - Interface references and binding
[X.931] Recommendation X.931 (06/99) - Information technology - Open distributed processing - Protocol support for computational interactions
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

12. ODP: Open Distributed Processing
Skip!
[X.950] Recommendation X.950 (08/97) - Information technology - Open distributed processing - Trading function: Specification
[X.952] Recommendation X.952 (12/97) - Information technology - Open distributed processing - Trading function: Provision of trading function using OSI Directory service
[X.960] Recommendation X.960 (06/99) - Information Technology - Open Distributed Processing - Type Repository Function
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

13. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Other ?
CORBA IDL
Java RMI
Microsoft
SOAP OSI
TINA-C EURESCOM
OMG ACTS
IETF XML
W3C TMF
Jini
Bluetooth
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

14. Distributed Object Technology SG 10 WP 3/10
Q3/10 Software platforms and Middleware for the Telecom Domain (revised)
Q2/10 ODL: Object Definition Language (revised)
Q11/10 DCL: Deployment and Configuration Language (new)
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

15. Distributed processing environment architecture Q3/10 Rec. Z.600
DPE Architecture, which represents the run-time environment for telecommunication and information services and applications.
an explanation of the relationship between modelling concepts so far as such a relationship needs to be concerned in the computing architecture;
a description of the Kernel Transport Network (KTN) which is the DPE analogue of the telecommunications signalling system;
an interoperability framework for the DPE;
requirements for the DPE kernel services.
Use TINA-C and RM-ODP
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

16. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Extends CORBA
- selection of protocol objects during initial configuration of a DPE node;
- dynamic selection of protocol objects at run-time of a DPE node;
- dynamic insertion of protocol objects (plug-in) at run-time of a DPE node;
- dynamic selection or insertion (plug-in) of protocol objects, according to
some QoS requirements;
- concurrent use of multiple protocol objects should be possible.
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

17. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Purpose
As different middleware products are being introduced in the communication infrastructure of network operators and service providers, the need for common management functions is increasing.
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

18. Object Definition Language Q2/10 Z.130
This document specifies the ITU Object Definition Language (ITU-ODL). ITU-ODL is used for the specification of systems from the perspective of the Open Distributed Processing (ODP) computational viewpoint [2]. It defines templates for
operational interfaces,
stream interfaces,
multiple-interface objects, and
object groups.
ITU-ODL is an extension of the ODP Interface Definition Language (ODP-IDL, [6]) with additions to support the specification of ODP computational viewpoint concepts at a syntactic level. ITU‑ODL is a superset of ODP-IDL. This relationship between ITU-ODL and ODP-IDL supports the construction of systems via OMG specified Object Request Broker (ORB) implementations [1].
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

19. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
ODL Notation
Object group, object with an operational interface
And a stream interface with source and sink
Supports inheritance, Data (as in OMG-IDL) and
Alphanumeric notation
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

20. Mappings between Languages and Questions
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

21. DCL: Deployment and Configuaration Language Q11/10 new
A key aspect of modern telecommunication systems development is the use of object technologies based on the general framework of Open Distributed Systems. Modelling such complex systems from the engineering viewpoint is the background of this question which asks for convenient engineering languages.
The deployment phase, which bridges the modelling and execution phase, is still suffering from imprecise concepts, methods and insufficient tool support. There is a practical need to fill this gap by an appropriate notation. Such a basic engineering modelling language should be defined also independent from concrete realisations of units of distributions.
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

22. Deployment and Configuaration Language
The Recommendations should apply in the area of the engineering modelling of a new generation of telecommunication systems. The requirements to the language could/should include:
Ability to express how computational objects can be configured statically on the available execution nodes
Ability to express performance requirements/provisions of the computational objects and configuration and migration policies needed to retain the performance requirements/provisions (i.e. dynamic configuration)
Ability to express physical parameters used during simulation and performance evaluation of systems
Support of the ITU languages ODL and SDL, but as far as possible independence of the computational language used (Language bindings could be in a separate part)
Support of graphical representation
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

23. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Language Features
Description of Middleware platforms
Specification of initial configurations
Mapping from platform-independent models to platform-dependent ones
Specification of re-configuration at run-time
e.g. migration, replication of service components, ...
actions to be performed by the target environment‘s DPE on violation of constraints during run-time
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

24. Network or Interface centric Paradigm ?
Applications
Network layer
Network
All IP?
Applications
MPEG
SS7 IP
API
Data &
invocations
ITU-T and ITU-D Workshop - Bangalore (India), August 2001

25. ITU-T and ITU-D Workshop - Bangalore (India), 30-31 August 2001
Future ?
Languages ?
Broker functions ?
Recursive transaction handling ?
Framework ?
Management ?
Comprehensive software architecture ?
Methodology ?
Application area ?
Can you help ?
ITU-T and ITU-D Workshop - Bangalore (India), August 2001