Next Generation Network

The technological advancements in telecommunication is forcing a trend towards unification of network & services, setting up a stage for the emergence of Next Generation Network-NGN.NGN is essentially an IP based network that enables any category of customers to receive wide range of services such as voice, data and video over the same network. The service layer in NGN is independent of underlying network and access is enabled across a wide range of broadband technologies, both wireless such as 3G, Wi-Fi, WiMax and wire line such as Copper DSL, cable, fiber etc. A single IP network replaces the different transport networks. The Migration to NGN reduces network and operational complexity resulting in better & reliable service. It offers unrestricted access by users to different service provider .It supports generalized mobility, which will consistent provision of services to users. In migration to NGN security is crucial. In IP based, which is convergent and has open environment, network infrastructure must be flexible and open towards various types of service. The key technique for NGN is scalable video coding and QoS to adapt to the various requirements such as quality, spatial and temporal resolution and bandwidth variation in heterogeneous networks. NGN would employ a meshed core, having embedded intelligence which would provide scalability, throughput and enhanced revenue generation by providing optimized connection, service, flexibility and efficient network management thus providing class of service (CoS). The constant human endeavor to communicate more effectively without any physical & psychological bondage has led to the trend of evolution in telecommunication -NGN.