In recent times technology is changing in rapid rates. Most of these changes are coming in communication and computer field. 4G technology is the next generation of technology which can be use in various fields and devices such as cell phones. The Fourth Generation mobile technology known as 4G is a successor to 3G and 2G families of standards. In computer term 4G means new wireless technology in which all IP packet-switched networks, mobile ultra-broadband access and multi-carrier transmission are included. This technology should use available radio spectrum more efficiently and provide end users with cable-modem transmission speeds which will support high-quality streaming video. With the help of 4G user can enable simultaneous connections to multiple high-speed networks which will provide faultless connection throughout a geographical area. This system employ the new coverage enhancement technologies to address the needs of mobile users in homes, public buildings and offices, which will free up network resources for mobile users who are roaming or who are in more remote service areas.
2011 Technology - 4G Benefits
With the help of advanced technology of new generation called 4G users can get the numerous benefits. Some of them are given below -
* Mobile broadband access with high speed.
* Provide IP telephony features.
* With 4G technology, user can easily get ultra-broadband Internet access.
* They also access gaming services and streamed multimedia in their mobiles.
* High quality of Multimedia Messaging Service (MMS)in mobiles.
* Get new innovative features in mobiles like Video chat, mobile TV and HDTV.
* It allow roaming with wireless local area networks and interact with digital video broadcasting systems.
* It should provide a complete and secure all-IP based solution.
2011 Technology - 4G Features
Below are the basic features of 4G technology -
* Flexible channel bandwidth, between 5 and 20 MHz, optionally up to 40 MHz.
* A nominal data rate of 100 Mbit/s while the client physically moves at high speeds relative to the station, and 1 Gbit/s while client and station are in relatively fixed positions.
* A data rate of at least 100 Mbit/s between any two points in the world.
* Peak link spectral efficiency of 15 bit/s/Hz in the down link, and 6.75 bit/s/Hz in the up link.
* System spectral efficiency of up to 3 bit/s/Hz/cell in the down link and 2.25 bit/s/Hz/cell for indoor usage.
* Smooth connection across various networks.
* Faultless connectivity and global roaming across numerous networks.
* High quality of service for next generation multimedia support features.
The Ups and Downs of 3G
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