4G WIRELESS TECHNOLOGIES

4G Wireless Technologies

4G Wireless Technologies

Introduction

In telecommunications, 4G (also known as 4-G) is an acronym used to refer to the fourth generation of technologies for mobile telephony. It is the successor of the technologies 2G and 3G; 4G is based entirely on IP protocol, with a system of systems and a network of networks, which is achieved through the convergence of wired and wireless networks. This technology may be used by wireless modems, smart phones and other mobile devices. The main difference with previous generations will be the ability to provide higher access speeds of 100 Mbps and 1 moving Gbps at rest, maintaining a quality of service (QoS) from end to end high security that will provide services of any kind in anytime, anywhere, with the lowest possible cost.

The WWRF (Wireless World Research Forum) aims to 4G is a fusion of technologies and protocols, not just a single standard, similar to 3G, which now includes technologies such as GSM and CDMA. For its part, the ITU said technologies considered in 2010 that evolved 3G technologies, such as WiMax and LTE, 4G technologies could be considered.

The company NTT DoCoMo in Japan was the first to perform experiments on fourth-generation technologies, reaching 100 Mbps in a vehicle at 200 km / h. The firm launched the first services based on LTE 4G in December 2010, in Tokyo, Nagoya and Osaka. In the rest, of the world are expected to implement over the year 2020.

The world of technology is changing at a rapid pace. New media have transformed the advertising and consumer expectations have adjust with the times and technology. In this new technology era, no other communications platform has risen fast than the mobile device.

The concept of 4G brings higher speeds to 300 Mbps with a radius of 8,000 Khz rating, making fun of himself, including advanced techniques for radio performance as MIMO and OFDM. Two of the terms that define the evolution of 3G, following the standardization of 3GPP will be LTE ("Long Term Evolution ') for radio access and SAE ('Service Architecture Evolution') for the network core. The requirements and standards ITU 4G indicate the following:

To leave the radio access type access CDMA feature of UMTS.

Using SDR (Software Defined Radio) to improve access radio.

The entire network is all IP provided.

The maximum peak rates of 100 Mbps are provided in downlink and 50 Mbps uplink (with a bandwidth of 20MHz in both directions).

The main nodes in this implementation are the 'Evolved Node B (BTS evolved), and the' System Access Gateway, which will also act as an interface to the Internet, directly connected to the Evolved Node B. RRM server is another component, used to facilitate interoperability with other technologies.

4G Insights

The two main mobile operators in Japan, KDDI and NTT DoCoMo, working on the development of a 4G service type and are now making MIMO test-run their future technology, especially in motion. DoCoMo plans to launch its 4G in 2010, with throughput of 100 Mbps high-speed 1 Gbps and under normal ...