In many countries where the third generation is firmly entrenched, they are awaiting the fourth. Unlike 3G networks, which are built on circuit switching infrastructure of 2G networks. The 4G is totally another network that uses Internet Protocol (IP, Internet Protocol) as a base and speeds similar to that of wired broadband networks.
What 4G is?
With the 4G arrival, the ITU-R (the division of the ITU Radio) drafted a document known as 4G/IMT, which establishes the minimum requirements for fourth-generation services. In this document the ITU has established that the 4G "should be a completely new network, a network of networks and a fully integrated system based on IP protocol, convergence of wired and wireless networks." 4G networks will be entirely IP packet switching.
According to ITU, 4G networks will be offer the next features:
It will provide downstream data rates of 100 Mbps and 1 Gbps, in outdoor environments (mobile) and indoor (fixed), respectively (ITU established a maximum speed of 2 Mbps in indoor environment for 3G networks).
4G networks will have quality of service (QoS) and high security end to end.
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