4G

            4th generation wireless systems

Short for fourth generation, 4G is an ITU specification that is currently being developed for broadband mobile capabilities. 4G technologies would enable IP-based voice, data and streaming multimedia at higher speeds and offer at least 100 Mbit/s with high mobility and up to 1GBit/s with low mobility (nomadic).

4G is an IP-based and packet-switched evolution of 3G technologies (such asWCDMA, HSDPA, CDMA2000 and EVDO) that uses voice communications. A number of technologies considered to be 4G standards include Long Term Evolution (LTE), Ultra Mobile Broadband (UMB) and the IEEE 802.16 (WiMax) standard.

• First 4G -In November 2005, KT demonstrated mobile WiMAX service in Busan, South Korea.

• On 10 April 2012, Bharti Airtel launched 4G LTE in Kolkata, first in India.

Speed

 Download - 1Gbit/s(Max.)

 Upload      - 500Mbit/s(max.)

4G Countries

1 Afghanistan
2 Africa
3 Australia
4 Belgium
5 Brazil
6 Canada
7 France
8 India
9 Italy
10 Kazakhstan
11 Middle East
12 The Netherlands
13 New Zealand
14 Phillippines
15 Poland
16 Romania
17 Scandinavia
18 Spain
19 South Korea
20 Sri Lanka
21 Switzerland
22 Thailand
23 Republic of Ireland
24 United Kingdom
25 United States