ENGENHARIA DE SERVIÇOS SERVICES ENGINEERING

Transcrição

1 Mestrado em Engenharia de Redes de Comunicações MSc in Communication Networks Engineering ENGENHARIA DE SERVIÇOS SERVICES ENGINEERING Modelos e Normas 2: NGOSS, TOM, etom, TAM, SID, TISPAN - Models and Standards 2: NGOSS, TOM, etom, TAM, SID, TISPAN 1

2 Outline Telecomm. Network Management: TMN Architecture Models: TISPAN Management Models: NGOSS Processes: TOM, etom, TAM, SID TMF Frameworkx 2

3 TMN Modeling Methods Network Management Network Element Management Network Element Layer Business Management Service Management (a) Layers (d) Information Models F A U L T C O N F I G A C C O U N T P E R F O R M S E C U R I T Y (b) Functional Areas 3

4 Integrated View of TMN Business Management BM-OSF Service Management SM-OSF Network Management NM-OSF q 3 q 3 f WSF x NM-OSF Network Element Management NE-OSF q 3 Network Element Layer NEF q 3 q x QAF F C A P S Functional Areas Logical Layers Functions & Reference Points 4

5 TISPAN Background Telecommunications & Internet Converged Services & Protocols for Advanced Networks (TISPAN) TISPAN is a standards group within the European Telecommunication Standards Institute (ETSI) Specialized in fixed networks & Internet convergence Defines a standards-based NGN architecture Based on well defined sub-systems, functional blocks & defined interfaces Maximizes fixed & mobile convergence, through adoption of 3G IMS components 5

6 TISPAN TISPAN focuses on all aspects of standardization for present and future converged networks including NGN TISPAN produces detailed implementable deliverables that cover NGN services, architectures, protocols, QoS, security and mobility aspects within fixed networks 6

7 TISPAN NGN Genesis A strong industry demand For new generation Multimedia services over xdsl access For preparing replacement of obsolescent PSTN For a first Release of specifications in 2005 Giving main standards directions With realistic and implementable solutions TISPAN developed an architecture consisting of a number of subsystems: Access network attachment Subsystem, Resource and admission control sub-system Maximizing Fixed and Mobile convergence, through adoption of 3G IMS component for support of conversational services TISPAN and 3GPP/3GPP2 collaborating to accommodate Wireline Access requirements by IMS 7

8 TISPAN NGN Services Requirements TISPAN_NGN supports legacy POTS services (PSTN/ISDN Emulation) Emulates the PSTN/ISDN Telephony service over an IP infrastructure Enable use of the existing ISDN Supplementary services TISPAN_NGN R1 defines Voice Service (Simulation) Similar - but not identical - to existing PSTN service Including important supplementary services Based on IMS capabilities for basic voice call TISPAN extensions for simulation will be included in 3GPP IMS Standard capabilities with the aim of making the services applicable for other IMS networks than TISPAN IMS, e.g. mobile networks to facilitate seamless fixed mobile convergence for Telephony over IP services 8

9 TISPAN and IP NGN 9

10 TISPAN support SIP and non-sip 10

11 TISPAN NGN Architecture 11

12 Telecoms Operation Map (TOM) Developed by Telemanagement Forum (TMF) Strong focus on enterprise aspects of management Telecoms Operations Process Map captures essential operations for: Customer Care Service development and operations Network and systems management to: Fulfil, Assure and Bill Services 12

13 TOM: Telecom Operations Map Customer Interface Management Process Fulfilment Assurance Billing Sales Order Handling Problem Handling Customer QoS Mgmt Invoicing & Collection Customer Care Processes Service Planning & Development Service Configuration Service Problem Resolution Service Development and Operation Processes Service Quality Mgmt Rating And Discounting Info System Mgmt Proc -ess Network Planning & Development Network Provisioning Network Inventory Mgmt Network Maintenance & Restoration Network Data Mgmt Network and Systems Management Processes Network Element Management 13

14 Describing Process Flows with TOM FAB Process Flows: Identify components taking part in process Identify interactions and information Identify co-operating sub-processes Examples of Process Flows: Service Fulfillment Flow Service Assurance Flow Billing process Flow 14

15 Sample Process Flow: Billing From Fulfilment Process ( Ordering ) Activate Billing Cycle Special Discounts Collection & Invoicing 3: Summarised Bill Content Collect Invoice 4: Generate Bills From Assurance Process (Problem ( Handling SLA Violations Rating & Discounting 2: Aggregated (Usage) Data Network Data Management 1: Network (Usage) Data Discount Rate Aggregate Collate Collect Other Providers Process Activity Network Elements and NE Management 15

16 Sample Process: Activating Service 16

17 Uses of TOM Framework for discussion inside and outside of a Telco Identifying and describing requirements Developing interface requirements and information models Negotiating interfaces for automated operations Locating parties on the map 17

18 etom: Enterprise Telecom Operations Map Extends TOM to include process required in the Telco enterprise: Service Development and Management Resource Development and Management Lifecycle support for service development and resource development Many other processes 18

19 etom: Enterprise Telecom Operations Map While TOM has two levels of features, the functional layers and individual processes, etom identifies three Levels: Level 0: broad classification of processes and identifies the external stakeholders Level 1: add the vertical classification of end-toend processes into areas such as fulfillment, assurance and billing already defined in the TOM Level 2: the processes themselves as in TOM, such as Order Handling or Service Configuration 19

20 etom: Enterprise Telecom Operations Map Level 0: 20

21 etom: Enterprise Telecom Operations Map Level 1: 21

22 etom: Enterprise Telecom Operations Map Level 2 (Operations): 22

23 etom: Enterprise Telecom Operations Map Level 2 (Strategy, Infrastructure, Product): 23

24 SID: Information Framework The Information Framework (SID), provides an information reference model and a common vocabulary from a business perspective. The Information Framework scope covers all of the information required to implement business processes in a Service Provider s operations based on the Business Process Framework (etom) processes. 24

25 SID: Information Framework 25

26 TAM: Telecom Applications Map The Telecom Applications Map provides the bridge between etom and SID (the NGOSS framework building blocks) and real deployable applications by grouping together process functions and information data into recognized OSS and BSS applications or services, by means of: Use of a Common Application Language for information exchange Defining a set of Standard Application Requirements (in a modular approach with reusable components) Enabling Automation 26

27 TAM: Telecom Applications Map 27

28 TMF Frameworkx Frameworx enables a service oriented, highly automated and efficient approach to running a service providers business through the following components: 28

29 TMF Frameworkx Business Process Framework Efficient, clear and effective business processes are critical to delivering innovative services quickly, at the least possible cost. Provides a comprehensive, industry agreed, multilayered view of the key business processes a service provider requires to run their business. Aligned to ITIL, and supported by off-the-shelf tools, the Business Process Framework provides: A comprehensive, multi-layered catalog of the business processes required to run a service provider business Guidelines and standard process flows ensuring processes are efficient and effective across the enterprise Business-to-Business (B2B) processes giving standardized processes across a value-chain of partners 29

30 TMF Frameworkx The Information Framework End-to-end service management requires a consistent use of data across the enterprise. Provides a comprehensive, industry agreed definition for information that flows through the enterprise and between service providers and their business partners. Supported by off-the-shelf tools, the Information Framework provides a common information model, reducing complexity and allowing for the definition of standardized integration points.the Framework enables business agility through: An agreed enterprise information model for end-to-end service management, defined using business-oriented UML models An extensible, proven and flexible information model supporting federation, enabling rapid introduction and management of new technologies and services A clear, common language between buyer and supplier and business partners 30

31 TMF Frameworkx The Application Framework Understanding how your business processes are implemented in your software architecture is paramount to success. Provides a model for grouping processes and their associated information into recognizable applications. It provides a common language and identification system between buyer and supplier for all application areas: A coordinated systems map showing how your business processes are implemented across applications Support for enterprise architecture design through understanding of your current systems architecture versus a standardized map Support for procurement through a consistent definition of an application, the functions it should perform and the information it requires. 31

32 TMF Frameworkx The Integration Framework Automation of business processes enables you to significantly reduce costs and rapidly deploy new services. But automation requires interoperability between systems across the entire enterprise and an extended value-chain of partners. Defines how the processes and information behind these systems can be automated by defining standardized Service Oriented Architecture (SOA)-based interfaces called Business Services (NGOSS Contracts): A taxonomy for services and guidelines for the development of Business Services Model driven tooling for the machine assisted production of standard interfaces A repository for Business Services.. 32

33 TMF Frameworkx Business Metrics Understanding the performance of the business is a critical aspect of managing transformation. Knowing how to compare to the industry in key operational areas will guide the transformation investment. Business Metrics, mapped to the Business Process Framework, provide a way to measure success based on a balanced scorecard that covers: Revenue and margin: a view of fiscal performance Customer experience: measures that impact the endcustomer s reaction to the service offering Operational efficiency: a view of cost and expense drivers. 33

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35 References and Readings Websites: Telemanagement Forum: ETSI TISPAN: Documents: Hu Hanrahan, Network Convergence: Services, Applications, Transport, and Operations Support, Capítulo 9: Operations Support Systems, 2007, John Wiley & Sons NOKIA, OSS/BSS reference architecture and its implementation scenario for fulfilment John Wilmes, Sajith Sankar, Standards-Based OSS for Accelerating Converged Services Delivery, TMF Mo Li, K. Sandrasegaran, "Network management challenges for next generation networks", The IEEE Conference on Local Computer Networks, 2005, Nov