SEMINAR ON NEXT GENERATION NETWORKS (NGN) NEXT IS WHAT ??
PRESENTED BY:MADHUSMITA SAHOO REGD NO.:-0807101026
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NGN OVERVIEW NGN FEATURES NGN ARCHITECTURE NGN CHARACTERISTICS NGN APPLICATIONS SUMMARY
NGN (DEFINITION):Next Generation Network (NGN):A packet-based
network able to provide telecommunication services and able to make use of multiple broadband ,QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies.
It enables unfettered access for users to networks and
to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users .
WHAT ARE WE TODAY
Problems of Existing networkFEATURESSlow to develop new features and capabilities. Expensive upgrades and operating expenses. Proprietary vendor troubles . Large power and cooling requirements. Limited migration strategy to New tech. Product/model obsolescence.
What Operators want ?More and more customers to increase their revenue Fast deployment of new services for more revenue. Reduced cost of the network or infrastructure.
What customers want ?New services at less cost. Value for his money. Bundled services from one operator Personalization of the services Freedom/Mobility. Simplicity
AND MOST IMPORTANTLY A CUSTOMER WANTS
A SINGLE INTEGRATED PLATFORM
In other words CONVERGENCE is the
need of the hour.
This requirement of Convergence
And fast deployment of new services gives birth toNGN OR NEXT GENERATION NETWORKS
FEATURES OF NGN
WHAT COMES NEXT
NGN is characterized by the following fundamental aspects: Packet-based transfer Separation of control functions among bearer capabilities, call/session, and application/ service Independence of service-related functions from underlying transport technologies Broadband capabilities with end-to-end QoS and transparency Unrestricted access by users to different service providers Generalized mobility Converged services between fixed/mobile Interworking with legacy networks via open interfaces
Support for a wide range of services, applications and
mechanisms based on service building blocks (including real time/ streaming/ non-real time services and multi-media) Unified service characteristics for the same service as perceived by the user Decoupling of service provision from network, and provision of open interfaces; Compliant with all regulatory requirements (e.g. emergency, privacy etc.) A variety of identification schemes which can be resolved to IP addresses for the purposes of routing in IP networks
ARCHITECTURE OF NGN
NEXT GENERATION NETWORKSPresent Day Networks Next Generation Networks (NGN)
W ork s t at io n
InternetW ork s t at ion
Gateways Wireless Telephone System
Integrated Services Over IP
Evolving towards IP Communications
NGN CONCEPTCustomerOSS OSS OSS OSS OSS Mobile NB Voice WAN Private Data Internet Video Services Edge Multi-service Aggregation Deep Access
Today Each service has its own network Multiplied operational costs Each network managed separately No service interaction Multiple customer profiles
New Service Network Seamless service linkage All services over any access One network for any service Unified management structure Single customer profile
Service Layer Control Layer Transport LayerPSTN Media Gateways Multiservice Packet Switching
Application Services Internet Softswitch Control IP Service Switching
RAS RAS DSLAM DSLAM GbE GbEFrame/ Frame/ ATM ATM
X X X
CPE CPEWireless Wireless
Access Layer:Combines all the access technologies like POTS, ISDN,
GSM/UMTS, HFC, LMDS, ADSL etc. Connects subscribers (Legacy/IP based), AN & PABX and trunks from PSTN,ISDN, and PLMN etc. Converts the format of information (circuit to packet or packet to circuit) before transmitting it.
Transport Layer: The backbone network and the techniques for
transport. It is IP backbone. The transport functions provide the connectivity for all components and physically separated functions within the NGN.
Control Layer: This layer controls call handling. It comprises of
the equipment that manages signaling (SGW) and call handling (Media Gateway Controller). MGC is also called SOFTSWITCH or Call Server or Call Agent.
Service Layer:This layer comprises of the equipment that
centralizes the service logic and data. It is also called as Application Server or Media Server The service layer provides value-added services and operation support functions.
Revenues per Line
OPEX per line
NGN IPTechnology TDMTechnology
Costs per connection
NGN IP Technology
Reduced number of managed nodes & self-routed IP backbone
Innovative applications through common IP denominator
Internet volumes and technological advancements reduce IP costs
CHARACTERISTICS OF NGN
Next Generation Networks will for the most part be
high speed packet based networks capable of delivering a multitude of Broadband services. Characteristics features Include : PROTOCOL INDEPENDENCE:In order to facilitate multiple forms of communications NGN would be capable of operating a multitude of different communications protocols. RELIABILITY:Increased dependencies on advanced applications have made NGN achieve necessary levels of resilience and reliability to support more diverse topologies and redundant elements than is normal in today's network.
NGN has the flexibility to be able to design, adapt and optimize the networks to accommodate simultaneously different types of media with varying network requirements. The main concern here is the quality of service. PROGRAMMABILITY:The more programmable and reconfigurable the NGN are the more the ability to cope with new services and user requirements.It allows for the traffic engineering and dynamic allocation of network resources.
Scalability is an attribute that helps protect the NGNs from being obsolete. It allows for the addition of capacity without the need to replace equipments.
APPLICATIONS OF NGN
Telepresence is the ability to communicate and interact in real time with another person at a different locations using telecommunications. Advanced Telepresence Systems operating on NGNs will enhance users experience of realism in communications.3D IMAGING:-
Adding three-dimensional aspects to the imaging systems of Telepresence will further enhance the experience of Telepresence.Other applications of it also include in medical and educational fields.
It involves applications of complete Tele-immersion. However it is possible that applications will develop that blend reality and virtual reality forming hybrid realities to enhance our experience.DATA AUGMENTATION:-
Augmentation of data into Telepresence services in many ways prove helpful in face-to-face communications that would have files attached to them that could provide additional information.
NGN Tele-education will use advanced graphical visualizations tools to help users understand difficult or abstract topics and also provide users with an opportunity to learn in a safe and non-critical environments.TELE-MEDICINE:-
Tele-medicine will allow the transfer of records or actual medical conditions between patients and medical personnel in geographically diverse locations. It would also help a great deal in Tele-surgery.
INTERACTION AND ENTERTAINMENT:-
High capacity applications would will emerge in the areas of gaming, movies and social interactivity. It would also support networks to support multiplayer real time use. Streaming video and audio entertainment will also be important applications of NGN. Peer to peer networking of video, audio and even 3D virtual realities would also be possible through Next Generation Networks.
Advantages of NGNOne infrastructure is required. One backbone for voice and data services
instead of two parallel ones. No maintenance of proprietary switching systems. Fewer call controlling entities in the network so less capital and operating cost. Easier configuration of equipment. Fast advanced and new services deployment is possible.
Disadvantages of NGN Part of the NGN equipment is still under research and
development. IP based equipment is deployed mainly in enterprise networks major concerns about QoS. CPEs require significant investments, if mass deployed. NGN solutions are not mature enough - major concerns about QoS, reliability in case of traffic volumes, similar to those served by the PSTN. Not proven economic benefits. Lack of standards - interoperability between different vendors equipment under question mark. Difficult integration between NGN equipment and the existing PSTN infrastructure.
SUMMARY:The NGN concept takes into consideration new realities in t