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Idea 1G, 2G and 3G mobile
1G is short for the generation of wireless technology, first introduced in 1980s.This is analog-based mobile technology. Category has a few, like NMT9 (Nordic mobile telephone) used in this Europe and Russia, short for AMPS mobile phone system previously used in the U.S., short for TACS Total Access Communication System used in the United Kingdom, Japan and Germany
2G stands for second generation wireless mobile communication technology, which uses technology digital mobile communication. 2G technologies can be divided into TDMA-based (GSM) and CDMA-based standards depending on the type of multiplexing used. Allows slow data communication, but its primary focus is voice. Introduced in 1978 in U.S.
Using digital signals between the terminals and works in two towers fundamental ways:
- Digital voice data can be compressed and multiplexed much more effectively than analog voice encoding through use of different codecs to allow more calls to be packed in the same amount of radio bandwidth
- Digital systems are designed to emit less radio power of the phones. This means that the cells could be smaller, so more cells could be placed in the same amount of space. This was possible thanks to cell towers and related equipment becoming less expensive.
Advantage
- Going all-digital allowed for the introduction of digital data services such as SMS and email
- 2G phones are immensely more private than 1G phones
- phones last much longer between charges
- The lower power radio signals require less power battery, as batteries can be smaller.
- The lower power emissions helped address health concerns.
3G is short for mobile phone technology for third generation
It is based on the family (ITU) International Union Telecommunications of the IMT-2000 standards.
3G networks enable network operators to offer users a wide range of advanced services, while that achieving greater network capacity through improved spectral efficiency. Services include large areas of wireless voice, voice, video telephony call and broadband wireless data, all in a mobile environment. Additional features also include HSPA data transmission capabilities able to deliver speeds up 14.4Mbit / s in the downlink and 5.8Mbit / s in the uplink.
The first 3G network before marketing began in Germany for the FOMA brand NTT DoCoMo in May 2001. The first commercial launch of 3G also by NTT DoCoMo in Japan on October 1, 2001.
The first European pre-commercial network was at the Isle of Man by Manx Telecom, the operator owned by BT (British Telecom), and the first commercial network in Europe was opened for business by Telenor of Norway in December 2001 with no commercial handsets and thus no paying customers. Both were on the W-CDMA technology.
The second commercial network to go live was by SK Telecom in South Korea's technology in January 2002. In May 2002, the second 3G network in South Korea was launched by KTF EV-DO and therefore were the first Koreans to see competition among 3G operators
The first commercial United States 3G network was by Monet mobile network in CDMA2000 1x EV-DO technology, but network provider later shut down its operations. The second 3G network operator in the U.S. Verizon Wireless was in October 2003 also on CDMA2000 1x EV-DO, and this network has grown sharply since then.
The first use of 3G technology in Africa was a 3G videocall made in Johannesburg on the Vodacom network in November 2004. The first commercial launch of 3G in Africa was by EMTEL in Mauritius in the W-CDMA standard. In Morocco in late March 2006, a 3G service was provided by the new company by Wana.
Rogers began implementing 3G HSDPA services in eastern Canada in early 2007 as a vision of Rogers. Fido and Rogers Wireless now offers service 3G in most urban centers.
In June 2007 the 200 millionth 3G subscriber had been connected. Of the 3 billion mobile subscriptions Worldwide mobile phone that is only 6.7%. In countries where 3G was launched – Japan and South Korea – more than half of all subscribers use 3G.
In Europe the leading country is Italy, with one third of its subscribers migrated to 3G. Other leading countries of the 3G migration include UK, Austria, Australia and Singapore in 20% migration level. A confusing statistic is counting CDMA 2000 1x RTT customers as if they were 3G customers. If this definition is used often in dispute, then the total base would be 475 million 3G subscribers in June 2007 and 15.8% of total subscribers worldwide
In December 2007, 190 3G networks were operating in 40 countries and 154 HSDPA networks were operating in 71 countries, according to the GSM Association. In Asia, Europe, Canada and the U.S., companies in telecommunications technology useW-CDMA with the support of around 100 terminal designs to operate 3G mobile networks.
Still several major countries such as Turkey, China, Indonesia, etc, have not granted 3G licenses and customers await 3G services. China has been delaying its decisions on 3G for many years, partly in the hope have the Chinese 3G standard, TD-SCDMA, to mature for commercial production.
The main features of 3G mobile
- Accessibility Internet
- Sharing information (audio, text, video)
- SMS and MMS
- GPS
- VoIP
- Bluetooth
- Web browser
- Virtual Keyboard
- All frequencies Environment (800,850,900,1900,2100) MHz
- TV, Video, Movie watching
- New Software installation capable
- Intercom
- Copy paste files
- Videoconferencing
- without changing global roaming terminal
To learn more about 3G phone, you can visit the author's site
http://3gcellular.blogspot.com
About the Author
Abdul Halim
Nationality-Bangladesh
Present location: Malaysia
Profession-Cell phone business
Contact email: pkfmhalim@gmail.com
website: http://cellphonecentre.blogspot.com
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