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Friday, November 25, 2011
The simple truth about LTE
What is LTE?
LTE stands for Long Term Evolution and it represents the next step in mobile radio communications after HSPA. 3GPP is the standardization body behind LTE.Another name for LTE is e-UTRA (Evolved-UMTS Terrestrial Radio Access).
LTE is expected to be the most competitive radio technology in coming years by offering high-data-rates with low-latency, improving services, lowering the costs and allowing for spectrum refarming thanks to the frequency and bandwidth flexibility.
Some main aspects of LTE are:
Peak data rate of 50 / 100 Mbps (uplink 2.5bit/s/Hz / downlink 5bit/s/Hz)
Reduced latency enabling RTT (round trip time) <10 ms
Packet-optimized
Improved spectrum efficiency between 2- 4 times higher than Release 6 HSPA
Frequency flexibility: standard defines 15 FDD and 8 TDD operating bands
Bandwidth scalability with allocations of 1.4, 3, 5, 10, 15 and 20 MHz
Operation in FDD and TDD modes
Support for inter-working with UMTS and non-3GPP systems (i.e. WiMAX)
Good level of mobility: optimized for low mobile speeds (up to 15km/h) but support also high mobile speeds (up to
350km/h)
Improved terminal power efficiency
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