LTE refers to
the advanced version of LTE that is being developed by 3GPP to meet or exceed
the requirements of the International Telecommunication Union (ITU) for a true
fourth generation radio-communication standard known as IMT-Advanced. 4G LTE,
whose project name is LTE-Advanced, is being specified initially in Release 10
of the 3GPP standard, with a functional freeze targeted for March 2011.
Following is the Key Features for
LTE Advanced:
§
Peak data rates: Downlink – 1 Gbps and Uplink – 500 Mbps.
§
Spectrum efficiency: 3 times greater than LTE.
§
Peak spectrum efficiency: Downlink – 30 bps/Hz; Uplink – 15
bps/Hz.
§
Spectrum use: the ability to support scalable bandwidth use and
spectrum aggregation where non-contiguous spectrum needs to be used.
§
Latency: from Idle to Connected in less than 50 ms and then
shorter than 5 ms one way for individual packet transmission.
§
Cell edge user throughput to be twice that of LTE.
§
Average user throughput to be 3 times that of LTE.
§
Mobility: Same as that in LTE
§ Carrier
Aggregation
§ Higher order
MIMO
§ Relay nodes and
Heterogeneous networks
§ Enhanced
Inter-Cell Interference Coordination
§ Coordinated
Multipoint (CoMP) Transmission – Formalized in 3GPP Release 11
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