ITU-T Kaleidoscope Conference Innovations in NGN. Managing NGN using the SOA Philosophy. Y. Fun Hu University of Bradford

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1 ITU-T Kaleidoscope Conference Innovations in NGN Managing NGN using the SOA Philosophy Y. Fun Hu University of Bradford

2 Next Generation Network (NGN) A IP/IMS based network Provide telecommunication services through multiple broadband, QoSenabled transport technologies convergence of telecommunications and Internet services Service related functions are independent from underlying transportrelated technologies Offers unrestricted access for users to different service providers Supports generalized mobility, which will allow consistent and ubiquitous provision of services to users Source : ITU T Rec. Y.2001 First ITU-T Kaleidoscope Conference Innovations in NGN 2

3 NGN Service characteristics Ubiquitous, real time, multi media communications Intelligent agents distributed throughout the network Simple and Context sensitive user interface Personal service customisation and management First ITU-T Kaleidoscope Conference Innovations in NGN 3

4 NGN Architecture overview Source : ITU T Rec. Y.2012 First ITU-T Kaleidoscope Conference Innovations in NGN 4

5 NGN Architecture overview NGN stratum Separation of Service layer from the Transport layer Service stratum Provides Service control functions, application support functions and service support functions (such as presence management). The Service user profile is used by the service control function and includes information such as the services that user is allowed to use and the simultaneous connections that can be made Transport stratum Provides functions for transfer multimedia streams over the IP network. Transport control functions allocate IP addresses, perform authentication tasks, and enable control functions such as resource admission for guaranteeing QoS. Transport user profile includes information for the user authentication data and the bandwidth that occupies when connecting to the access network. First ITU-T Kaleidoscope Conference Innovations in NGN 5

6 Management Layers Management of the NGN (1) Business Management Layer Fault Management Configuration Management Accounting Management Performance Management Security Management Service Management Layer Network Management Layer Element Management Layer Network Elements First ITU-T Kaleidoscope Conference Innovations in NGN 6

7 Management of NGN (3) The management of the NGN requires the consideration of two management components: Operations Support Systems (OSS) for Network Management Provides a set of processes that a network operator requires in order to monitor, control and analyze the network. Includes processes that are required to manage and control faults, and perform functions that involve interactions with customers. Business Support Systems (BSS) for Business and Service Management Provides processes that a service provider requires to conduct relationships with external stakeholders including customers, partners and suppliers. First ITU-T Kaleidoscope Conference Innovations in NGN 7

8 Evolution of the Management Architectures From a simple Manager Agent model to complex OSS/BSS systems Manager SNMP AE SNMP AE Programme Agent MIB OSS Level 2 OSS Level 1 NM/ EM BSS OSS Level 2.. NM/ EM OSS Level2 OSS Level 1 Legacy Invent ory OSS Level 1 NM/ EM BSS BUS WF BUS.. OSS Level2 OSS Level 1 NM/ EM NGN BSS Business Service 1 ( ( ( NGN BSS Business Service n Common Communication Vehicle ( NGN OSS Framework Service ( ( ( ( NGN OSS Framework Service n NE NE NE NE NE NE NE NE NE NE NE NE Manager- agent model Past OSS/ BSS Architecture Enterprise Bus solution SOA- based OSS/BSS Client Server Point to point Enterprise Application Integration (EAI) Service Oriented Architecture Based First ITU-T Kaleidoscope Conference Innovations in NGN 8

9 Point to point Architecture Point to point Integration Model Service Trouble Ticketing System Equipment Trouble Ticketing System Transmission Network Fault Monitoring IT System Fault Monitoring IP Network Fault monitoring Linking software systems and applications using point to point integration it doesn t work well on a large scale distributed environment such as telecommunications. Drawbacks of this approach is : Proprietary messages, APIs Every link is custom integration Lack of open standards Tightly coupling of data and implementation Cost Operational policies are embedded in application Lack of agility

10 Result of Point to Point Management First ITU-T Kaleidoscope Conference Innovations in NGN 10

11 EAI Management Traditional EAI Model Service Trouble Ticketing System Equipment Trouble Ticketing System Application specific interfaces Transmission Network Fault Monitoring IT System Fault Monitoring IP Network Fault monitoring Traditional Enterprise Application Integration patterns do not provide interoperability between heterogeneous platforms due to their tightlycoupled nature.

12 SOA based NGN Management What is SOA? Definition according to ITU : SOA is defined as a software architecture of services, policies, practices and frameworks in which components can be reused and repurposed rapidly in order to achieve shared and new functionality. Definition according to J. Hurwitz : SOA can be defined as: An Architecture for building business applications as a set of loosely coupled black box components orchestrated to deliver a well defined level of service by linking together business processes. First ITU-T Kaleidoscope Conference Innovations in NGN 12

13 SOA based NGN Management Support network operations and management and at the same time to support business investment decisions by adopting the SOA principles Provide OSS services (monitoring and measurement services) to enhance NGN customer service satisfaction Define business choreography, business orchestration and business processes Define a unified platform for BSS to access and reuse services provided by the OSS for service management and B2B applications Define OSS specific ontology, semantic representation and retrieval of measurement and monitoring information First ITU-T Kaleidoscope Conference Innovations in NGN 13

14 SOA based OSS/BSS Business Service Support (BSS) Operations Statistics Customers/Suppliers Customer Care Business systems Business Process Orchestration Sub processes Business Services OSS Applications and Infrastructure Configuration Management System Inventory Trouble Ticketing System Fault Management System 1 Fault Management System 2 First ITU-T Kaleidoscope Conference Innovations in NGN 14

15 SOA Principles Loose Coupling Autonomy Abstraction Service Contract SOA principles Reusability Statelessness Composability Discoverability First ITU-T Kaleidoscope Conference Innovations in NGN 15

16 Roles and operations in SOA Service Provider: Provides the platform that hosts access to the service, and the applications that deliver the service capabilities. Service Requestor: An application that invokes or initiates an interaction with a service. Content and Service aggregation are the two business activities are identified by the Service requestor. Service Requestor SOA core Model Find (WSDL) Service Registry Execute (SOAP) Bind (WSDL) Service Provider Service Registry: A searchable registry that facilitates the Service providers to publish their service descriptions. First ITU-T Kaleidoscope Conference Innovations in NGN 16

17 SOA Model Service Trouble Ticketing System Equipment Trouble Ticketing System Enterprise Service Bus (ESB) Transmission Network Fault Monitoring IT System Fault Monitoring IP Network Fault monitoring First ITU-T Kaleidoscope Conference Innovations in NGN 17

18 Enterprise Service Bus (ESB) A standards based integration backbone, combining messaging, Web services, transformation, and intelligent routing Sonic Software Enterprise Service Bus Brokered Communication Endpoint Metadata Standards Support Intelligent Routing Transformation Adaptation First ITU-T Kaleidoscope Conference Innovations in NGN 18

19 Challenges of SOA based NGN Management SOA /ESB technologies still evolving. Services requires governance and partnerships. SOA means business transformation i.e. a fundamental shift in business model. A generic information model is essential to implement SOA philosophy. First ITU-T Kaleidoscope Conference Innovations in NGN 19

20 Information Models : CIM and SID Information models for managed objects Telemanagement Forum (TMF) adopts the Shared Information/Data Model (SID) Platform independent information model for telecom service description both business and technical Distributed Management Task Force (DMTF ) adopts the Common Information Mode (CIM) Technology neutral information model primarily focusing on IT resource management and IP Networks Harmonisation between CIM and SID To provide interoperability between different management solutions used for NGNs First ITU-T Kaleidoscope Conference Innovations in NGN 20

21 SID Framework Platform independent information model for telecom service description Provide a common information/data language Depict the relationships among the entities First ITU-T Kaleidoscope Conference Innovations in NGN 21

22 Common Information Model (CIM) CIM developed by the Distributed Management Task Force (DMTF) CIM is an Information Model that describes the management aspects of Services and Resources at various levels of abstraction and decomposition. CIM provides description of the end to end managed environment using standardized semantics that can be specialized and extended. Is an object oriented information model and is independent of applications, platforms, protocols and implementations. CIM primary focus is the IT resource management (Systems, Storage) and IP Networks. CIM provides a low level abstraction of management information of network and system components. CIM structure allows it to be directly transformed into the Data Model for implementation without paying performance penalties for high level of normalization. First ITU-T Kaleidoscope Conference Innovations in NGN 22

23 LDAP: CIM SID Harmonization The SID/CIM/LDAP model can be considered for the creation of Directory Services to enable service discovery in the SOA and services will be described using WSDL. SID Modeling Elements Model Mapping CIM Modeling Elements contribution contribution Business View Entity Definitions reflection Shared Semantic Concepts reflection Profiles and Design Templates SID Specific Concepts CIM Specific Concepts First ITU-T Kaleidoscope Conference Innovations in NGN 23

24 LDAP: CIM SID Harmonization Business Service Support (BSS) Operations Statistics Customers/Suppliers Customer Care Business systems Business Process Orchestration Sub processes Business Services Middleware ESB LDAP SID/ CIM OSS Applications and Infrastructure Configuration Management System Inventory Fault Management System Performance Management System Security Management System

25 Conclusion The Management architecture for NGNs according to the ITU T M.3060 NGOSS recommendation is presented. The basic architectural view was described, giving more emphasis on the functional architectural view of the management plane. Service Oriented Architecture concept was introduced as well as the Web Service paradigm, in order to illustrate the benefits of that technology which is the enabler of the SOA philosophy. LDAP is proposed for SID/CIM harmonisation First ITU-T Kaleidoscope Conference Innovations in NGN 25

26 Thank You Any questions? First ITU-T Kaleidoscope Conference Innovations in NGN 26

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