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4G communication Technology----Series (3)

- Jan 18, 2018 -

4G communication Technology----Series (3)

This article uses 4G to reference ITU-R as defined by IMT-Advanced. The IMT-Advanced cellular network system must meet the following requirements: 

Based on All IP packet-switched networks.

Achieve speeds of about 100 Mbit / s in high-speed mobility environments such as mobile access; up to about 1 Gbit / s in low-speed mobility environments such as peak data rates for nomadic / fixed wireless network access.

The ability to dynamically share and utilize network resources to support simultaneous use of multiple users per unit.

Use 5-20MHz scalable channel bandwidth, optionally up to 40MHz. 

The peak spectral efficiency of the link is 15 bit / s / Hz (downstream) and 6.75 bit / s / Hz (upstream) (ie, it should be possible to exceed the bandwidth of less than 67 MHz in 1 Gbit / s downlink).

The system's spectral efficiency is as high as 3 bit / s / Hz / cell and 2.25 bit / s / Hz / cell indoors. [2]

Smooth switching across different system networks.

Provide high-quality service QoS (Quality of Service), in order to support a new generation of multimedia transmission capabilities.

In September 2009, the technical proposal was submitted to the International Telecommunication Union (ITU) as a 4G candidate.Basically all the suggestions are based on the following two technologies:

LTE-Advanced (3GPP Release 10) is standardized by 3GPP

WirelessMAN-Advanced (IEEE 802.16m) is standardized by the IEEE