26-02-2013, 12:37 PM
Report on 3G Technology
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3G History
3G technology is the result of ground-breaking research and development work carried out by the International Telecommunication Union (ITU) in the early 1980s. 3G specifications and standards were developed after fifteen years of persistence and hard work. The technical specifications were made available to the public under the name IMT-2000. The communication spectrum between 400 MHz to 3 GHz was allocated for 3G. Both the government and communication companies unanimously approved the 3G standard.[8] The first pre-commercial 3G network was launched by NTT DoCoMo in Japan in 1998,[9] branded as FOMA. It was first available in May 2001 as a pre-release (test) of W-CDMA technology.[10] The first commercial launch of 3G was also by NTT DoCoMo in Japan on 1 October 2001, although it was initially somewhat limited in scope;[11][12] broader availability of the system was delayed by apparent concerns over its reliability.[13]
The first European pre-commercial network was an UMTS network on the Isle of Man by Manx Telecom, the operator then owned by British Telecom, and the first commercial network (also UMTS based W-CDMA) in Europe was opened for business by Telenor in December 2001 with no commercial handsets and thus no paying customers.
The first network to go commercially live was by SK Telecom in South Korea on the CDMA-based 1xEV-DO technology in January 2002. By May 2002 the second South Korean 3G network was by KT on EV-DO and thus the Koreans were the first to see competition among 3G operators.
The first commercial United States 3G network was by Monet Mobile Networks, on CDMA2000 1x EV-DO technology, but this network provider later shut down operations. The second 3G network operator in the USA was Verizon Wireless in July 2002 also on CDMA2000 1x EV-DO.[14] AT&T Mobility is also a true 3G UMTS network, having completed its upgrade of the 3G network to HSUPA.
• Features of 3G
The ITU (International Telecommunication Union) has proposed 3G telecommunications standards to provide cost efficient high quality,
wireless multimedia applications and enhanced wireless communications.
The features of 3G can be divided into two categories.
One is data rates and the other is security.
The main feature of 3G technology is that it supports greater voice and data capacity and high data transmission at low-cost.
3G mobiles can operate on 2G and 3G technologies.
The second major feature is the security:
3G offers greater security features than 2G like Network Access Security, Network Domain Security, User Domain Security, Application Security.
This technology provides localized services for accessing traffic and weather updates.
Video calls and video conference is another major feature in 3G mobile technology.
These features reduces the communication barriers between people, that were not sacked even with mobile phones.
• Advantages of 3G
3G has provided a new way of life among mobile phone and handset users.
Consumers are quickly getting on the bandwagon and investing in 3G-powered devices and tools.
3G can change the way you look at network, with the various features and effects.
You can get ahead and take advantage of the highest details and gadgets by understanding the functions and uses of the system,
as well as the available networks. Here are more details.
• Disadvantages of 3G Technology
3G connections are not available everywhere.
With rapidly evolving mobile technology, phone developers are constantly looking for improved and faster voice and data connections.
As of October 2010, most mobile phones are fitted with 3G, or third-generation technology.
This technology allows for the transfer of data through mobile broadband.
The current market, however, is already beginning to push forward with fourth-generation, or 4G, phone capabilities.
The 3G technology that is being left behind has not been without its faults
Applications of 3G
The bandwidth and location information available to 3G devices gives rise to applications not previously available to mobile phone users.