NGN Next Generation Network

NGN is a packet-based network able to provide Telecommunication Services to users and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent of the underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.

1. NGN Next Generation Network Concepts Havar Bathaee University of Tehran December 7, 2014

2. Agenda Introduction NGN Definition NGN Standardization NGN Conceptual Model Convergence Towards NGN NGN Softswitch-Base Architecture NGN Configuration and Topology Conclusion Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

3. Introduction Today, telephony, the Internet, and the cellular mobile networks continue to be different domains, each has its own protocols and services. PSTN INTERNET MOBILE NGN Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran Others… All-IP Network

4. Introduction General Idea Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

5. Introduction History Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

6. NGN Definition NGN is a packet-based network able to provide Telecommunication Services to users and able to make use of multiple broadband , QoS -enabled transport technologies and in which service-related functions are independent of the underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

7. NGN Definition Unified Global Networking Platform Packet-Based Network Provides Telecommunication Services to Users QoS -enabled Transport Technologies (Delay, Throughput, and Reliability) Services are Independent of Transport Technologies Unfettered Access for Users to Networks and Services Generalized Mobility Which Allow Consistent and Ubiquitous Provision of Services to Users Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran Characteristics

8. 3 GPP NGN Standardization Key Players ITU-T ITU Telecommunication Standardization Sector ITU-T NGN-GSI ATIS NGN FG ETSI TISPAN ATIS Alliance for Telecom. Industry ETSI European Telecom. Standards Institute 3GPP 3 rd Generation Partnership Project Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

9. NGN Standardization Key Players (continued) Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

10. NGN Standardization Problems Within the NGN concepts the standardization institutions are still working on the following issues and problems: Existing networks migration towards NGN Development in the field of access technologies Connection of other networks to IP networks Provision of services and development of new ones Interworking in the area of addressing Interworking of signaling systems Roaming a mobility Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

11. NGN Conceptual Model Access network layers Transport layer Control layer Services & applications layer NGN Management l ayer Fixed, Data, Cable, Wireless fixed, Mobile, Satellite Transmission Packet network, VOIP, Media gateways, Signalling gateway, Core Packet network MGC, Softswitch, Call Agent, Gatekeeper NGN applications and services, application server, features server, media server Access to NGN Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

12. In the NGN it is required that the network control is not determined only by the terminal equipment applications, but that the network intelligence may carry out control over the network at all levels. Management layer Management layer tasks: Resource management (capacity, ports, and physical elements) and QoS in access to the network and the transport network Various media processing, encoding, data transfer (information flows) Management of calls and connection. Management and interworking of all elements of the reference architecture Service control NGN Conceptual Model Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

13. Convergence towards NGN Today’s network is divided into: Public Switched Telephone Network Packet Switched Networks (LAN, WAN,…) Cellular Mobile Networks Convergence is the process of interconnection of traditional switched circuit networks (PSTN and Mobile Networks) and packet-base networks that use IP (Internet Protocol). Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

14. Migration scenarios of different types of networks platforms are based on the idea to integrate TDM (Time Division Multiplexing) and IP (Internet Protocol) platforms into one converged NGN platform (from the point of network infrastructure, as well as services). Evolutional scenarios TDM IP NGN Convergence towards NGN Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

15. Evolutional scenarios (continued) Convergence towards NGN PSTN & Intelligent Networks Internet & Data Networks Cable Networks Wireless & Mobile Networks Internet Telephony Hybrid Networks VoIP Networks VoCATV GSM GPRS UMTS NGN Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

16. From Vertical Silos to Horizontal NGN Architecture Convergence towards NGN Transport Service Control Application Access End Points Mobile Networks PSTN/ISDN Data/IP Networks Cable/Terrestrial TV Vertical Silo Architecture per service Services Existing and Newly Emerging Services Horizontal Layered Multi-Service Architecture Services & Network Control ( QoS , Security, IP Mobility) Multi-Service IP Backbone Wireless Access Wireline Access Services Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

17. Comparing the Features of PSTN/IN, Internet, and NGN Convergence towards NGN PSTN/IN Internet NGN Multimedia Services NO YES YES QoS support YES NO YES Network Intelligence YES NO YES Intelligent Terminal Equipment NO YES YES Integrated Supervision & Control YES NO YES Reliability High Low High Service Creation Complex ad-hoc Systematic Simplicity of Services use Medium High High Modularity Low Medium High Time of Service Introduction Long Short Short Openness of Architecture Small High High Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

18. NGN Softswitch-Base Architecture Access Network PSTN / IN RTP RTCP VoIP IP / MPLS MGCP H.323 SIP Trunking Gateway (MGW) TDM RTP/RTCP Access Gateway Media Server Application Server SS7 SIG T M Sigtran Signaling Gateway Media Gateway Controller SIP SIP MGCP H.248 MGCP H.323 SIP MGCP H.248 Media Gateway Controller SIP-T, BICC Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran AG

19. NGN Softswitch -Base Architecture Components M Media Gateway Controller Generally serves as components for controlling of communication relations of users and other network components; provides call routing, network signaling, billing, and other logical functions. Call Agent Softswitch Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

20. NGN Softswitch -Base Architecture Components T Media Gateway Operate within transport plane, perform all function related to media physical transport between different networks, media processing functions (transcoding, echo cancellation, jitter managing), tones processing and management of information transport. Trunking gateways: interface between the PSTN/PLMN and VoIP Residential gateway: provide traditional analog (RJ11) interface to VoIP Access gateway: provide traditional analog or PBX interface to VoIP Signaling network: provide change of signalization systems between PSTN/PLMN to VoIP Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

21. NGN Softswitch -Base Architecture Components Application Server Application server is implemented to perform functionalities specific to certain service, perform specialized service logic call control, also includes more functionalities in terms of user web interface, end-points management, etc. For example it can provide specific videoconferencing service, Call Center service or IP Centrex service. Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

22. NGN Softswitch-Base Architecture Components Media Server Media server provides functionalities allow interaction between calling party and application using end-point device. It provides Media Resource Functions (tones detection, speech synthesis and recognition, compressions, media mixing, etc.) and Media Control Functions that control of media functions (voice message play management, conference bridge, fax message management, etc.) Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

23. NGN Configuration and Topology INNI: Internal Network-Network Interface NNI: Network-Network Interface UNI: User Network Interface Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

24. Conclusion Other Architectures IMS and entities (P-CSCF, I-CSCF,…) TISPAN NGN GSM … NGN Protocols SIP (Session Initiation Protocol) SDP (Session Description Protocol) RTP (Real Time Transport Protocol) ... NGN Standards Services and QoS Havar Bathaee , NGN, Next Generation Network Concepts, University of Tehran

25. Thank You Any Question? Havar Bathaee University of Tehran