3G (Third Generation) is the third generation of telecommunication standards and technology for mobile networking, represents the evolution from previous standards, it is replacing 2G and 2.5G networks (CDG, 2006).
3G networks, which were designed to have a greater capability for data. The main advantage is that it use of a wide radio spectrum resulting in a faster data transmission, which suits multimedia services (Kumar, 2007).
The Universal Mobile Telecommunication System (UMTS) is one of the 3G mobile systems being developed under the ITU's IMT-2000 framework. 3G-UMTS provides circuitswitched connection up to 384 kbps and packet-switchedconnections up to 2 Mbps. Is achived by using 5 MHz carriers, improved radio interfaces, and core architectures (Kumar, 2007).
Speaking about Mobile TV services being provided over 3G networks, are possible thanks to standards like MBMS, 1xEvolution Data Optimized (1xEV-DO) and High-Speed Downlink Packet Data Access (HSDPA). These standards were driven by the need to make available Mobile TV services to serve more users within the same cellular networks and improve quality (Kumar, 2007).
Just checking my mobile phone and accessing to “Vodafone Live” service platform I can say that today video on demand through clip streaming services as well as live video are available for a broad range of content, , weather, sports, etc.
Mobile phone operators in Europe, Asia, Latin America, and specific areas of USA and Africa America offer such services (Kumar, 2007).
Multimedia (video and/or video) services including live TV over mobile networks are provided by streaming the video and audio over the networks in a manner very similar to streaming over the Internet (like Youtube), The streaming service quality is subject to sustained rates of data transfer that depends on the network technology and protocols.
Mobile TV services are possible and facilitated by the use of common standards for the file formats and video and audio codec’s as formalized by the 3G Partnership Project and the 3GPP Packet Streaming Standards (3GPP-PSS) (Kumar, 2007).
The procedures for setting up packet-switched streaming sessions have been formalized under the 3GPP-PSS for video streaming.
As I mentioned in the beginning the current 3G technology is the result from the evolution from voice-oriented networks such as 2G and 2.5G (GSM & CDMA). This evolution taken place in two branches, those involving GSM and those involving CDMA networks. The GSM network evolved to GPRS which evolver to EDGE (2-2.5G technologies), and finally evolved to the UMTS framework (3G). The UMTS uses Wideband CDMA (WCDMA) to carry the radio air transmissions. (Kumar, 2007)
The CDMA networks evolved from IS95A to IS-95B and then to CDMA2000 a 3G standard. More evolutions have taken place in order to meet new demands of real-time Mobile TV (CDG). WCDMA (UMTS) standard dominates the market is a direct spread technology, and the CDMA2000 standards have grown. According to a report from RNCOS, the total number of 3G subscribers using WCDMA and CDMA2000 grew 45% in 2007 over the previous year to cross the mark of 600 million (ITU, 2008).
Mobile phone operators in Europe, Asia, Latin America, and specific areas of USA and Africa America offer such services (Kumar, 2007).
Multimedia (video and/or video) services including live TV over mobile networks are provided by streaming the video and audio over the networks in a manner very similar to streaming over the Internet (like Youtube), The streaming service quality is subject to sustained rates of data transfer that depends on the network technology and protocols.
Mobile TV services are possible and facilitated by the use of common standards for the file formats and video and audio codec’s as formalized by the 3G Partnership Project and the 3GPP Packet Streaming Standards (3GPP-PSS) (Kumar, 2007).
The procedures for setting up packet-switched streaming sessions have been formalized under the 3GPP-PSS for video streaming.
As I mentioned in the beginning the current 3G technology is the result from the evolution from voice-oriented networks such as 2G and 2.5G (GSM & CDMA). This evolution taken place in two branches, those involving GSM and those involving CDMA networks. The GSM network evolved to GPRS which evolver to EDGE (2-2.5G technologies), and finally evolved to the UMTS framework (3G). The UMTS uses Wideband CDMA (WCDMA) to carry the radio air transmissions. (Kumar, 2007)
The CDMA networks evolved from IS95A to IS-95B and then to CDMA2000 a 3G standard. More evolutions have taken place in order to meet new demands of real-time Mobile TV (CDG). WCDMA (UMTS) standard dominates the market is a direct spread technology, and the CDMA2000 standards have grown. According to a report from RNCOS, the total number of 3G subscribers using WCDMA and CDMA2000 grew 45% in 2007 over the previous year to cross the mark of 600 million (ITU, 2008).
Figure 1: 3G Standards
In the next post I will discuss the standardization process for multimedia delivery (Movile TV) in 3G networks, and future technologies.
References:
- CDG. (2006). Retrieved 5 26, 2009, from Market Trends: http://www.cdg.org/technology/3g/resource/Market_Trends_FINAL_12-1-06.pdf
- ITU. (2008, 9 28). ITU news. Retrieved 05 2008, 25, from Global 3G Subscribers Passed 600 Million Mark in 2007 : http://www.itu.int/ITU-D/ict/newslog/Global+3G+Subscribers+Passed+600+Million+Mark+In+2007.aspx
- Kumar, A. (2007). Mobile TV: DVB-H, DMB, 3G Systems and Rich Media Applications . Fucal Press Media Technoly Professional
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