This technology is expected to trounce the deficiencies of 3G technology in terms of speed and quality. 4G can be best described in one word “MAGIC”, which stands for Mobile multimedia Anytime Anywhere Global mobility support, integrated wireless and personalized services

4G, short for fourth-generation wireless communication systems, has engaged the attention of wireless operators, equipment makers (OEMs), investors, and industry watchers around the world. 4G refers to the next generation of wireless technology that promises higher data rates and expanded multimedia services. Since, at this point, 4G is more of an aspiration than a standard, there is not an agreement yet on what should constitute 4G.

Evolution of 4G Technology :

In order to make smooth transition from 3G to 4G the mobile communication companies are promoting Super 3G/LTE. The companies are upgrading 3G Technology by initializing the introduction of High Speed Downlink Packet Access (HSDPA) service, which increases the downlink data rate of packet services, and by finalizing specifications for High Speed Uplink Packet Access (HSUPA), which enhances uplink speed. HSDPA and HSUPA cover area by 3-4 times relative to W-CDMA and by providing the high transmission rate with low cost per bit transmission. The main objective of the Super 3G is to construct simple, low cost system by removing the complexity from wireless network and mobile handsets.

The 3G provides packet and voice services separately where as Super 3G is based on ALL-IP network covering both packet and voice services. As from diagram we can infer that by the 2010 we would be able to achieve the 1 Gbps in motion at low speed and 100 Mbps at high speed. On December 25, 2006, NTT DOCOMO became the first in the world to achieve a packet signal speed of 5 Gbps in an outdoor test in a low-speed environment (10 km/h). The test was undertaken to demonstrate the expected maximum transmission speed in an actual cell environment, taking into account interference from peripheral cells.

The telecommunication companies like NTT Docomo from Japan and Sprint Nextel were also deploying 4G wireless technologies from the early 2006 along with 3G mobile technologies. The flexibility of 4G technologies to be used in combination with GSM and CDMA has provided it an edge over other technologies. The reason is that the high broadband capability of 4G not only increases data streaming for stationary users but also for mobile users.4G can be efficiently combined with cellular technologies to make consistent use of smart phones.

The digital cameras attached in smart phones can be used to establish video blogs in scattered geographical regions. This gives the manufactures the opportunity to produce more affordable user friendly 4G compatible devices. Famous iPod is one such device that supports the working of video blogs. Hence 4G is capable of providing new horizon of opportunity for both existing and startup telephone companies.