There’s barely a gap of 30 years between the first-generation, voice-only, bulky wireless cellular telephones and the multi-tasking, ultra-high-speed smart cell phones of the fourth generation. 4G is the abbreviated form for Fourth Generation Technology. But it’s not just restricted to cell phones. Advancement in video cameras, laptop machines, gaming devices and even refrigerators and vending machines will be benefited from 4G connectivity.
4G networks aim at affording high-speed, on-demand multimedia services, full voice-over-Internet protocol, improved international roaming and integrated video calling, from mobile and still positions. It’s done by using a better, different wireless spectrum than 3G devices. A single radio transmission technology can’t afford the towering level of mobility and high-speed data transfers necessitated by the standards. Thus, access to mobile services and mobile networks can’t be controlled by a solo provider.
In 1991, the very first possible, digitally encrypted cellular phone network was launched by a Finnish company. In the year 2000, the ITU or International Telecommunication Union issued its standards for the third generation of cellular phones and telecommunication services. Simultaneous data and voice services and peak data transfer rates of no less than 200 kilobits per second are provided by the 3G systems. In the next ten years, service providers developed on those standards to give mobile broadband access of numerous megabits per second to smart phones and laptop computers. In February 2007, it was announced by NTT DoCoMo, a Japanese company, that it had attained a download velocity of 5 gigabytes per second while traveling at 10 kilometers per hour.
The Radiocommunication Sector of the ITU, brought out its provisions for 4G services in October 2010. The aim is to give peak data transmission rates of up to 1 gigabyte a second when the user is stationary, and 100 megabits per second when the user is mobile. Known as IMT-Advanced or International Mobile Telecommunications Advanced, the cellular plan must also offer at least 40 megahertz of scalable bandwidths.
4G mobile isn’t yet initiated as an established set of standards; hence its features are presently just goals and not necessities. 4G mobile should not only use hugely rising data transfer speeds, but also improved security measures. It should also use a method, based on the IP address system employed for the internet. The United States has two key systems utilizing 4G mobile technology. One is supported by Clearwire and is known as WiMax. It began its testing services in 2008, and was all set to extend this into chief latest markets in 2009. The opponent system, LTE or Long Term Evolution, is supported chiefly by Verizon. Though it was supposed to get prepared for testing in 2010, it won’t be available for extensive utilization until 2012. LTE supporters expected to conquer this disadvantage by presenting faster speeds and manufacturing cheaper equipments.
It is a guest post by Alfred Smith, a community member of several technology forums.