Competitive Exams: Current Affairs 2011: 3G mobile networks
3G Mobile Networks
With the mobile teledensity crossing an all time high of 71 per cent with India having total telephones a little over 841 million as on May 31, 2011 and registering an average growth of 26 per cent p. a. The market is now poised for great utility mainly focusing on entertainment and advertising.
Introduction of 3G has enhanced the capabilities of wireless mobile network with higher bit rate transmission for data transfer minimizing the cost and time. Internet access and data download including video and high quality music have increased in recent times.
Mobile Broadband is expected to fuel the growth in India. As per the recent survey by GSM Association (GSMA), a ten per cent increase in broadband penetration will lead to 42 per cent revenue growth in healthcare sector, 36.8 per cent in education and 18.8 per cent in transport sector.
The Third Generation (3G) wireless network, known as UMTS, provides broadband/high bit rate wireless Internet access, making it possible to offer a wide variety of multimedia services, such as multimedia messaging, video streaming and access to TV channels. Collaboration with third party service providers to deliver new value added services and content to mobile subscribers is on the increase. High bit rate multimedia applications, such as local news, travel information, advertisements based on location, online broadcasting of movie clips, and sports events/highlights, are among the services of interest to service providers and consumers.
The Universal Mobile Telecommunication System (UMTS) network was conceived and designed to transport information efficiently as multimedia multicast and broadcast applications through the wireless network since the send once charge many times'philosophy of those types of services is especially attractive. 3rd Generation Partnership Project (3GPP) defines Multimedia Broadcast Multicast Services (MBMS) as a point to multipoint (PTMP) down link bearer service for IP data in PS domain The main objective being to offer high speed data rates and to enhance the capability of UMTS for efficient Multicast and Broadcast mode.
The broadcast mode is a unidirectional point to multipoint transmission of multimedia data (e. g. Text, audio, picture, video) from a single source entity to all users in a broadcast service area. In the multicast mode there is the possibility for the network to selectively transmit to cells within the multicast service area which contain members of a multicast group. For some of the services using the multicast mode payment of subscription is required.
MBMS architecture shall enable the efficient usage of radio network and core network resources, with the main focus on the radio interface efficiency. Specifically, multiple users should be able to share common resources when receiving identical traffic.
It enables reuse, to the extent possible, of existing 3GPP network components and protocol elements.
It supports different quality of service levels, charging data shall be provided per subscriber for MBMS multicast mode, provide services to users when roaming outside their home network also and interworking possibilities between MBMS capable network elements and non
MBMS capable network elements Broadcast and Multicast Service Centre (BM SC) takes care of content provider charging and MBMS transport, GPRS Gateway Support Node (GGSN) is meant for service QoS negotiation and traffic routing, and Serving GPRS Support Node (SGSN) is used for user authentication, service authorization.
Radio Access Network (RAN) functions include delivery of MBMS data to designated service area, support initiation/termination of MBMS transmissions by the CN and support intra
RNC, inter RNC mobility of MBMS receivers.
MBMS is a very promising technology for the future because of many great advantages. The merits are decreases data in the network, uses radio resources more efficiently, offers new service categories like Mobile Broadcast Services and Multipoint to Multipoint Services in two modes Broadcast (stimulate subscription to other services) and Multicast (subscribed services, generate revenue).
Courtesy: The Hindu and Times of India