If "4 G" WiMAX and LTE technologies are beginning to do much about them over trade networks deployments, the developments of these standards, to provide even more opportunities both in flow and flexibility of the infrastructure are already in phase of standardization.
Because while WiMAX and LTE are always owned the technology group said IMT-2000, which incorporates also the HSPA (hence the difficulty to make "4 G" technologies while they are still in the field of 3 G mobile technologies, even if it is at the top margin), the "true" technologies 4 G (in the technical sense) shall belong to the IMT-Advancedgroup.
In it, the standards have already been identified. It will be a LTE-Advanced, evolution of LTE, and on the other hand WirelessMAN-Advanced, which corresponds to the Gigabit WiMAX (or WiMAX 2). These technologies must provide theoretical throughput of 1 Gbps in fixed wireless access and 100 Mbps on the move (against 100 Mbps in fixed reception and several tens of Mbps in LTE movement currently).
LTE and WiMAX are now commonly placed under the sign of the 4 G, these developments will perhaps bear the name 4 G +, the image of the distinction between 3 G (UMTS) and + 3 G (HSPA) for the previous technologies.
Validation of the IMT-Advanced Group
Always is it that the specifications of the IMT-Advanced Group come to be validated by international body responsible for overseeing the major axes of development of mobile technologies, namely ITU-R (International Telecommunication Union, in its component R for radio communications).
This validation paves the way for mobile communications to provide rates comparable to those of optical fibre, in a mobility situation, explains François Rancy, Director of the ITU - R:
"IMT-Advanced will be as have a connection in optical fibre in its mobile, making smartphones 500 times faster bandwidth than current 3 G smartphones." But it is not only a question of flow, it is also a step forward in terms of efficiency. IMT-Advanced Group will use much more efficiently frequency spectrum, managing on a reduced bandwidth higher flows. This will allow mobile networks to respond to the strong growth of the traffic data mobile expected over the next years. "
It remains that group IMT-Advanced technologies will not deployed commercially for several years (except perhaps in some cases), priority to the deployment of WiMAX and LTE technologies.
It is interesting to note that the LTE deployment occurs very quickly now that the commercial machine is launched in the United States under the impulse of Verizon Wireless (and AT & T) now, giving a blow of accelerator to the whole mobile industry.
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