A summary of the technologies that have been studied as the basis for LTE Advanced is included in a technical report.Some sources consider first-release LTE and Mobile Wi MAX implementations as pre-4G or near-4G, as they do not fully comply with the planned requirements of 1 Gbit/s for stationary reception and 100 Mbit/s for mobile.Confusion has been caused by some mobile carriers who have launched products advertised as 4G but which according to some sources are pre-4G versions, commonly referred to as '3.9G', which do not follow the ITU-R defined principles for 4G standards, but today can be called 4G according to ITU-R.Vodafone NL for example, advertised LTE as '4G', while advertising now LTE Advanced as their '4G ' service which actually is (True) 4G.It has, however, been debated whether first-release versions should be considered 4G, as discussed in the technical understanding section below.In March 2008, the International Telecommunications Union-Radio communications sector (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s) for high mobility communication (such as from trains and cars) and 1 gigabit per second (Gbit/s) for low mobility communication (such as pedestrians and stationary users).Since the first-release versions of Mobile Wi MAX and LTE support much less than 1 Gbit/s peak bit rate, they are not fully IMT-Advanced compliant, but are often branded 4G by service providers.According to operators, a generation of the network refers to the deployment of a new non-backward-compatible technology.
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.
B, which is available since 2010 and offers 15.67 Mbit/s downstream.
This article refers to 4G using IMT-Advanced (International Mobile Telecommunications Advanced), as defined by ITU-R.
4G is the fourth generation of broadband cellular network technology, succeeding 3G.
A 4G system must provide capabilities defined by ITU in IMT Advanced.
Coordinated Multi-point Transmission will also allow more system capacity to help handle the enhanced data speeds.