NGN Next Generation Networks

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NGN Next Generation Networks

  1. 1. Abdul Quyyum Butt aqbutt.786@gmail.comM.Sc. Information Technology University of Gujrat Pakistan
  2. 2.  Introduction Existing Network Infrastructure and convergence towards the NGN NGN: Definition and Architecture NGN and Protocols NGN Services Conclusions aqbutt, University Of Gujrat Pakistan 2/5/2013 2
  3. 3.  Today, telephony, the Internet, and the cellular mobile networks continue to be different domains, each has its own protocols and services. NGN will be the foundation for the creation of a new range of multimedia applications that takes full advantage of the characteristics of the broadband network and the “always on” capability. aqbutt, University Of Gujrat Pakistan 2/5/2013 3
  4. 4.  The general idea behind the NGN is that one network transports all type of data and provide services (voice, data, and all sorts of media such as video) by encapsulating these into packets, similar to those used on the Internet. NGNs are commonly built around the Internet Protocol (IP), and therefore the term all IP is also sometimes used to describe the transformation toward NGN. aqbutt, University Of Gujrat Pakistan 2/5/2013 4
  5. 5.  “ A next-generation network (NGN) is a packet-based network which can provide services including Telecommunication Services and able to make use of multiple broadband, quality of Service-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and unrestricted provision(access) of services to users. “ aqbutt, University Of Gujrat Pakistan 2/5/2013 5
  6. 6. “ NGN is a concept for defining and deploying networks, which, due to their formal separation into different layers and planes and use of open interfaces, offers service providers and operators a platform which can evolve in a step by step manner to create, deploy and manage innovative services.” aqbutt, University Of Gujrat Pakistan 2/5/2013 6
  7. 7. Today’s network is divided into: The Public Switched Telephone Network, The packet Switched Networks(e.g. the Internet) and The Mobile networks.Convergence is the process of interconnection of traditional switched circuit networks (the PSTN and mobile networks) and packet-switched networks based on the Internet Protocol (IP) for routing. aqbutt, University Of Gujrat 2/5/2013 7 Pakistan
  8. 8.  A basic architecture was defined comprising Network Elements needed for the provision of traditional Telephony services. Each element has distinct roles within the network and is designed to integrate horizontally with other elements in the same layer, as well as vertically with the function-based elements of the other layers. The Next Generation Networks architecture is based on four layers: Access layer, Core layer, Control layer and Service layer. aqbutt, University Of Gujrat Pakistan 2/5/2013 8
  9. 9. 1-Access layer elements includes different Media Gateways that support connection to and from the access network with the core network.2-Core layer is the network handling converged services based on IP.3-Control layer is the call server that provides call control functions and also provides the control of the Media Gateway.4-Service layer is an IT platform that plays the role of an IN-SCE (Intelligent Network Service Creation Environment) extending their functionality in order to cover the new network scenarios aqbutt, University Of Gujrat Pakistan 2/5/2013 9
  10. 10. aqbutt, University Of Gujrat Pakistan 2/5/2013 10
  11. 11.  Next Generation Networks require new protocols to support converged networks. Requirements Support for legacy PSTN interworking, Migration Plan from legacy to NGN, High availability, Lifeline services and Scalability With so many protocols, which one to choose? H.323,SIP(Session Initiation Protocol), MGCP(Media Gateway Control Protocol), SIGTRAN aqbutt, University Of Gujrat Pakistan 2/5/2013 11
  12. 12. Source: ITU/BDT NGN Network Architecture aqbutt, University Of Gujrat Pakistan 2/5/2013 12
  13. 13.  Access Gateway -Allows the connection of Subscriber to the packet network. -convert the traffic flow of analogue signal to packet network Trunking Gateway - Allows interworking between TDM telephony network to packet-based network. aqbutt, University Of Gujrat Pakistan 2/5/2013 13
  14. 14.  Softswitch - Referred to as Call Agent or Media Gateway Controller (MGC) provides the service delivery control within the network via H.248 protocol, sip protocol - Performs signaling gateway functionality for interworking with PSTN N7 signaling network. - Provides connection to Intelligent Network or Applications Server (AS) to offer another services aqbutt, University Of Gujrat Pakistan 2/5/2013 14
  15. 15.  Applications Server (AS) - Support service execution, e.g. to control call server and NGN special resources (e.g. media server, message server) via these protocol: H.248, SIP, SS7, ENUM, MPLS, BGP etc. aqbutt, University Of Gujrat Pakistan 2/5/2013 15
  16. 16. Several services that will be important drivers in the NGN environment are:1-Voice Telephony: Call Waiting, Call Forwarding, 3-Way Calling2-Voice Portal: Provide callers with anywhere, anytime access to information like news, weather, stock quotes, and account balances using simple voice commands and any telephone,..3-Data services: bandwidth-on-demand, connection reliability. aqbutt, University Of Gujrat Pakistan 2/5/2013 16
  17. 17. 4-Multimedia services: This allows customers to converse with each other while displaying visual information.5-Virtual Private Networks: allow large, geographically dispersed organizations to combine their existing private networks with portions of the PSTN, thus providing subscribers with uniform dialing capabilities.6-Public Network Computing: Provides public network- based computing services for businesses and consumers. aqbutt, University Of Gujrat Pakistan 2/5/2013 17
  18. 18. 7-Unified Messaging: Supports the delivery of voice mail, email, fax mail, and pages through common interfaces.8-E-Commerce: Allows consumers to purchase goods and services electronically over the network.9-Call Center Services: A subscriber could place a call to a call center agent by clicking on a Web page.10-Interactive gaming: Offers consumers a way to meet online and establish interactive gaming sessions.11-Home Manager: These services could monitor and control home security systems, energy systems, home entertainment systems, and other home appliances. aqbutt, University Of Gujrat Pakistan 2/5/2013 18
  19. 19. aqbutt, University Of Gujrat Pakistan 2/5/2013 19
  20. 20.  Next generation networks are not just a PSTN replacement but at a minimum they must provide the equivalent voice quality and reliability of today’s PSTN. The NGN will be the foundation for the creation of a new range of multimedia applications that take full advantage of the characteristics of the broadband network and the “always on” capability. aqbutt, University Of Gujrat Pakistan 2/5/2013 20
  21. 21.  The creation of the NGN is no overnight transformation, but it is an evolution that is already underway and gathering pace. The NGN is the shift from separate application-specific networks to a single network capable of carrying any and all services. aqbutt, University Of Gujrat Pakistan 2/5/2013 21
  22. 22. THANK YOU For feedback Aqbutt.786@gmail.com 11050856-001@uog.edu.pk University of Gujrat(UOG) Pakistan aqbutt, University Of Gujrat Pakistan 2/5/2013 22

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