Partial Translation:
Friday, February 19, 2016
4G / LTE networks and spectra used and proposed
The Federal Communications Commission (FCC) of USA, enabled in April 2015, in the 150 MHz band 3550/3700 ??MHz-commercial use.
Now six companies Federated Wireless, Google, Intel, Nokia, Qualcomm and Ruckus Wireless is committed to develop, market and promote solutions that use the 3.5 GHz band in the United States under the premise that "will be essential to drive innovation, support new business models and stimulate economic growth. "
Firms are participating in the efforts of the Wireless Innovation Forum to develop and promote the adoption of specifications concerning the operation of this band, which include the provision of an interface for central coordination of spectrum systems enable protection of federal operations and management of coexistence among the tenderers.
The sextet will conduct field tests based on LTE in the second half of 2016 and will showcase some of its achievements in the Mobile World Congress (MWC16) in Barcelona.
In September 2015, it was learned that Google Nokia exploring the possibility of deploying LTE-U over 3.5 GHz. The news was surprising because the multinational Internet to the FCC expressed his hope that the fourth generation services anchored in licensed systems do not invade the space-based technologies unlicensed spectrum.
BACKGROUND
4G / LTE networks and spectra used in operational networks
GSA notes that until April 9, 2015, 393 operators have launched commercial LTE services in 138 países.Pronóstico year-end a total of 460 deployed networks.
At the end 2014, it is estimated that these networks serving a total of 497 million users.
The GSA specifies that at least 646 operators are investing in LTE around 181 countries, proving to be the fastest growing technology in history.
LTE-Advanced, which offers faster for users and is characterized by the aggregation of carriers, also shows a remarkable performance in 2015. According to GSA, is currently present in 39 countries through 64 networks deployed.
ESPECTOS UTIIZADOS
The most commonly used in LTE spectra they are:
1.8 GHz (lane 3), known as 3GPP band 3. This band is being used in 70 countries by 144 operators, more than 45% of LTE networks worldwide, and is supported by the largest ecosystem of user devices 769 products. More than 40% of the devices can operate in the band of 1,800 MHz.
2.6 GHz (lane 7), which is used in 26.4% of networks in commercial service.
AWS (lane 4) or 1.7 / 2.1GHz 8% is used. In 2013 two blocks Peru (Movistar and Americatel) AWS band were awarded. Is operational only Movistar.
800 MHz (band 20) gained share as the third most popular band spectrum, deployed in 55 networks commercially launched in 33 countries. "The use of sub 1 GHz spectrum (700 to 800 MHz) is critical for LTE rural area and wide coverage, and in many cases improves the experience when using mobile broadband services within spaces" said Alan Hadden, President of GSA.
VoLTE: 66 operators in 35 countries are investing in VoLTE, whether studies, tests or deployments- The GSA confirmed the launch of 92 models of smartphones that support VoLTE.
LTE-Advanced is beginning to gain popularity to be launched by 69 operators, ie, more than 21 percent.
LTE Broadcast: Most operators are investigating the potential of LTE Broadcast eMBMS provided by technologies to efficiently deliver multimedia content from one to many (point to multipoint), especially video
FDD: 90% of LTE networks using frequency division duplexing (FDD), ie the transmitter and receiver operate in different spectra. 10% use duplexaxión time division (TDD).
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