Long Term Evolution (LTE)

1. Submitted by Gautam Prakash

2.  Next generation of mobile broadband technology.
 LTE was started as a project by telecommunication body as 3GPP in 2004.
 LTE is specified in release 8 of 3GPP.
 Next level after UMTS 3G technology.
 Data rates of 300 Mbps downlink and 75 Mbps Uplink.
Introduction

3. Evolution of Mobile Cellular Network

4. Architecture
The high level architecture of LTE comprises of three main
Components:
• UE ( User Equipment )
• E-UTRAN ( Evolved – UTMS Terrestrial Radio Access Network )
• EPC ( Evolved Packet Core )
continued…

5. UE (User Equipment) :
 Internal architecture is identical to that of UMTS (3G) and GSM (2G, 2.5G)
 Consists of Mobile Equipment (ME)
Three main components of ME are:
o Mobile Termination (MT) for handling all communication function.
o Termination Equipment (TE) for terminating all data streams.
o Universal Integrated Circuit Card (UICC) also known as U-SIM.
Architecture (continued)
continued…

6. E-UTRAN (Evolved – UTMS Terrestrial Radio Access Network)
Architecture (continued)
continued…

7. EPC (Evolved Packet Core)
Architecture (continued)

8. • LTE-A is upgraded version of LTE technology
• LTE-A is specified in release 10 of 3GPP.
• Supports peak data rate of 1Gbps in downlink and 500 Mbps in uplink.
• LTE-A utilizes higher number of antennas and added carrier aggregation.
LTE Advanced

9.  It is specified in Release 13 of 3GPP.
 Bringing LTE Advanced to unlicensed spectrum involves leveraging the large
number of small cells that operators are planning to deploy and aggregating
unlicensed spectrum with the licensed spectrum for LTE Advanced.
 Existing core network is used as it is.
 The whole system works as a unified LTE network to efficiently leverage both
licensed and unlicensed spectrum bands.
LTE Advanced – Unlicensed Spectrum

10. Benefits of LTE-A’s Unlicensed Spectrum
• Unified LTE Network for licensed and Unlicensed
spectrum.
• Enhanced user experience :
o Wider data pipe for better data rates
through carrier aggregation.
o Seamless user experience.
• Better coverage and increased capacity

11. Conclusion
Bringing LTE Advanced to unlicensed spectrum has profound benefits for both operators and end
users.
For operators, it provides a cost-effective, unified network for both licensed and unlicensed
spectrum using the same
For end users (customers or enterprise) it means an enhanced user experience—higher data rates
through a wider data pipe.
- Core network
- Small cells will use both the spectrum bands
- Authentication operations
- Management systems

12. THANK YOU !!