Friday, May 20, 2011

LTE flashed to 28.8 Mbps

AT & T has demonstrated its facilities and LTE offers real rates of 28.87 Mb / s download and 10.4 Mb / s upload. These figures fall when the network is overloaded, but they are much higher levels than those from Verizon, the other U.S. operator, which has stagnated at 12 Mb / s and 5 Mb / s. This allows especially to French readers have a glimpse of what this technology reserves.

LTE (Long Term Evolution) provides data rates much higher than the 3G which then runs to more than 3.5 Mb / s download and 1.2 Mbps in upload. The demonstration operated MIMO technology, according to GigaOm, who was present during testing. Multiple antennas receives and sends signals to increase bandwidth.

AT & T used the frequency spectrum of 700 MHz and it has recently acquired AWS spectrum bands-1 that it already has, according to the blog. The AWS-1 is used in the United States and Canada and pat frequencies from 1710 MHz to 1755 MHz and 2110 MHz to 2155 MHz. France shall use the 800 MHz and 2.6 GHz for its LTE.

The presentation had the merit of showing flow in real conditions of use. Typically, researchers who do this kind of demonstration are keen to brandish the theoretical speeds of LTE, which can reach 100 Mbps, but these are levels that the user will never meet. French operators are about to submit their applications for 4G licenses that allow them to offer similar services (see "4G licenses will cost over 2.5 billion euros).

During the presentation, GigaOm reports about the AT & T hopes to buy more spectrum to offer a better network for its customers. Indeed, the LTE bandwidth increases with the number of available frequencies. The French government has decided that an operator could not buy more than 50% of the 800 MHz spectrum, as this would weaken the competition.

Smaller players fear however that this is not enough. LTE starts to be deployed in North America and France should follow within a year or two. Finally, even if the LTE is widely considered one of the technologies with 4G WiMAX 2, the International Telecommunication Union estimates that these two modes of Internet access do not deserve this name (see "For the ITU The 4G does not exist ").

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