Updating roaming on verizon
This was followed, in 2001, by 3G multi-media support, spread spectrum transmission and, at least, 200 kbit/s peak bit rate, in 2011/2012 to be followed by "real" 4G, which refers to all-Internet Protocol (IP) packet-switched networks giving mobile ultra-broadband (gigabit speed) access.
While the ITU has adopted recommendations for technologies that would be used for future global communications, they do not actually perform the standardization or development work themselves, instead relying on the work of other standard bodies such as IEEE, The Wi MAX Forum, and 3GPP.
Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.
The first-release Long Term Evolution (LTE) standard (a 4G candidate system) has been commercially deployed in Oslo, Norway, and Stockholm, Sweden since 2009.
B, which is available since 2010 and offers 15.67 Mbit/s downstream.
The peak bit rate is further improved by smart antenna arrays for multiple-input multiple-output (MIMO) communications.
An IMT-Advanced cellular system must fulfill the following requirements: Implementations of Mobile Wi MAX and first-release LTE are largely considered a stopgap solution that will offer a considerable boost until Wi MAX 2 (based on the 802.16m spec) and LTE Advanced are deployed.
The latter's standard versions were ratified in spring 2011, but are still far from being implemented.
A common argument for branding 3.9G systems as new-generation is that they use different frequency bands from 3G technologies ; that they are based on a new radio-interface paradigm ; and that the standards are not backwards compatible with 3G, whilst some of the standards are forwards compatible with IMT-2000 compliant versions of the same standards.
As of October 2010, ITU-R Working Party 5D approved two industry-developed technologies (LTE Advanced and Wireless MAN-Advanced) for inclusion in the ITU's International Mobile Telecommunications Advanced program (IMT-Advanced program), which is focused on global communication systems that will be available several years from now.