A
next
generation network (NGN) solution is a packet based network which
offers various telecommunication service including voice and data
services to the users. NGN is capable of handling several types of
traffic such as voice, video, data and multimedia simultaneously.
Next generation network is the convergence of various service
provider networks including data network (internet), public switch
telephone network (PSTN) and wireless network. These solutions offer
convergent multimedia services by using a shared network. Different
elements of the network include a shared core network for all types
of access and services, and core network architecture. Core network
architecture has three layers namely transport layer, control layer
and services layer.
NGN
provides interoperability by means of open interface between layers
of core network architecture. This enables seamless control of
multiple transport technologies such as asynchronous transfer mode
(ATM), time division multiplexing (TDM), wavelength division
multiplexing (WDM) and frame relay (FR) among others.
Next
generation networks are based on protocols such as multiprotocol
label switching (MPLS) and internet protocol (IP). NGN offers a
single connectivity network capable of carrying information for a
phone call, video conference, web session and video from source to
destination. Further, these solution offers value added service such
as communication services including real time and non-real time,
transaction and content services. Additionally, it provides broadband
capabilities with end-to-end quality of service. Advantages of NGN
such as flexible architecture and low communication cost make it an
effective solution for telecom operators and users.
Technological
innovation is a major factor for driving a change in
telecommunication industry. A key innovation is transformation from
circuit-based public switched telecommunication network to
packet-based network using internet protocols which is known as next
generation networks. This transformation includes shifting from
traditional copper wire to optical fiber cables that offers high
speed services. NGN offers several features to support data and voice
communication services.
Increasing
data traffic across the globe creates demand for effective and high
capacity IP based network. As a result, telecommunication operators
are adopting next generation networks to manage this data traffic.
Growing demand for high speed multimedia services such as VoIP, HDTV
and mobility is supporting the growth of NGN solution market. NGN
offers cost effective bundled services (voice, video and data). Less
operational cost and capital expenditure are some of the factors that
are supporting the growth of next generation network solutions
market. . However, availability of other technologies such as high
speed wireless networks, digital subscriber line and power line
communications is affecting the market growth. Moreover, low
awareness and slow adoption rate are posing a significant challenge
for the market growth.
NGN
has several functional groups such as transport group, service group,
end-user functional group, third-party applications and management
functions. Next-generation network solution market can be segmented
on the basis of services and applications. Different services offered
by NGN include voice, video and data services. NGN offers various
applications such as IPTV, VoIP, mobile telephony and web TV among
others.
Some
of the key players in next generation solution market include Cisco
Systems Inc., Juniper Network Inc., IBM Corporation, VMware Inc.,
Oracle Corporation, Citrix Systems Inc., F5 Networks Inc.,
Alcatel-Lucent S.A, AT&T Inc., M2 Telecommunication Group,
Macquarie Telecom Group Ltd. and Telstra Corporation Ltd. among
others.
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