01 Ra41201en30gla0 Lte Epc Overview v01
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RA4120-30A - LTE RPESS LTE EPS Overview
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RA41201EN30GLA0
Nokia Siemens Networks AcademyLegal notice Intellectual Property RightsAll copyrights and intellectual property rights for Nokia Siemens Networks training documentation, product documentation and slide presentation material, all of which are forthwith known as Nokia Siemens Networks training material, are the exclusive property of Nokia Siemens Networks. Nokia Siemens Networks owns the rights to copying, modification, translation, adaptation or derivatives including any improvements or developments. Nokia Siemens Networks has the sole right to copy, distribute, amend, modify, develop, license, sublicense, sell, transfer and assign the Nokia Siemens Networks training material. Individuals can use the Nokia Siemens Networks training material for their own personal self-development only, those same individuals cannot subsequently pass on that same Intellectual Property to others without the prior written agreement of Nokia Siemens Networks. The Nokia Siemens Networks training material cannot be used outside of an agreed Nokia Siemens Networks training session for development of groups without the prior written agreement of Nokia Siemens Networks.
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Module Objectives After completing this module, the participant should be able to:
List the LTE/SAE main requirements Underline the LTE/SAE key features Review the 3GPP specification work concerning LTE/SAE. Describe the LTE Network Architecture List the key functionalities of the evolved NB Understand the protocol stack implemented on EUTRANinterfaces Identify the LTE Terminals categories
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Module Contents
LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary
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RA41201EN30GLA0
Module Contents
LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary
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RA41201EN30GLA0
The way to the Long-Term Evolution (LTE): a 3GPP driven initiative LTE is 3GPP system for the years 2010 to 2020 & beyond.
It shall especially compete with WiMAX 802.16e/m It must keep the support for high & highest mobility userslike in GSM/UMTS networks
The architectural changes are big compared to UMTS LTE commercial launch has started early 2010.
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What are the LTE challenges?The Users expectation ..leads to the operators challenges
Best price, transparent flat rate Full Internet Click-bang responsivenessUser experience will have an impact on ARPUThroughput Latency
reduce cost per bit provide high data rate provide low latencyPrice per Mbyte has to be reduced to remain profitable
Cost per MByte
HSPA
LTE
HSPA
LTE
UMTS
HSPA
I-HSPA
LTE
LTE: lower cost per bit and improved end user experience7 Nokia Siemens Networks RA41201EN30GLA0
LTE = Long Term Evolution Next step forGSM/WCDMA/HSPA and CDMA
A true global roaming technology
Peak data rates of 303Mbps / 75 Mbps
Enhanced consumer experience
Low latency 10-20 ms Scalable bandwidth of1.4 20 MHz
Easy to introduce on any frequency band
OFDM technology Flat, scalable IP basedarchitecture8 Nokia Siemens Networks RA41201EN30GLA0
Decreased cost / GB
Schedule for 3GPP releases
Next step forGSM/WCDMA/HSPA and cdma2000Specification:UMTS/ WCDMA 3GPP Rel. 99/4 2000 HSDPA IMS Rel. 5 2003 HSUPA MBMS WLAN IW Rel. 6 2005
A true global roaming technology
HSPA+ LTE Studies Rel. 7 2007
LTE & EPC Rel. 8 2008
LTE-A studies Rel. 9 2009
LTE-A Rel. 10 2011
year
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LTE have been developed by the same standardization organization. The target has been simple multimode implementation and backwards compatibility. HSPA and LTE have in common: Sampling rate using the same clocking frequency Same kind of Turbo coding The harmonization of these parameters is important as sampling and Turbo decoding are typically done on hardware due to high processing requirements. WiMAX and LTE do not have such harmonization. Nokia Siemens Networks
LTE-A:RA41201EN30GLA0 LTE-Advanced
Comparison of Throughput and Latency (1/2)
Peak data rates of303 Mbps / 75 Mbps
Enhanced consumer experience:- drives subscriber uptake - allow for new applications - provide additional revenue streams
Low latency 10-20msMax. peak data rate350 300 250 Downlink Uplink
Mbps
200 150 100 50 0HSPA R6
Latency (Rountrip delay)*GSM/ EDGE HSPA Rel6Evolved HSPA (Rel. 7/8, 2x2 MIMO) LTE 2x20 MHz (2x2 MIMO) LTE 2x20 MHz (4x4 MIMO)
HSPAevo (Rel8) LTEmin max
0
20
40
60
80
100
120
140
160
180
200 ms
DSL (~20-50 ms, depending on operator) * Server near RAN
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Scalable BandwidthScalable bandwidth
Scalable bandwidthof 1.4 20 MHz
Easy to introduce on any frequency band: Frequency Refarming (Cost efficient deployment on lowerfrequency bands supported)Urban
2.6 GHz 2.1 GHz
LTE UMTS
or2.6 GHz 2.1 GHz 2006 2008
LTE UMTS2010 2012 2014 LTE 2016 2018 2020
Rural900 MHz GSM
UMTSLTE
or900 MHz
GSM
LTE
200611 Nokia Siemens Networks
2008
2010
2012
2014
2016
2018
2020
RA41201EN30GLA0
Increased Spectral Efficiency
OFDMA technologyincreases Spectral efficiency
LTE efficiency is 3 x HSPA R6 in downlink HSPA R7 and WiMAX have Similar Spectral Efficiency
All cases assume 2-antenna terminal reception HSPA R7, WiMAX and LTE assume 2-antenna BTS transmission (2x2 MIMO)2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 Downlink Uplink
bps/Hz/cell
ITU contribution from WiMAX Forum shows DL 1.3 & UL 0.8 bps/Hz/cell
Reference: - HSPA R6 and LTE R8 from 3GPP R1-071960
- HSPA R6 equalizer from 3GPP R1-063335
HSPA R6
HSPA R6 + UE equalizer
HSPA R7
WiMAX
LTE R8
- HSPA R7 and WiMAX from NSN/Nokia simulations
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Reduced Network Complexity
Flat, scalable IP basedarchitecture
Flat Architecture: 2 nodes architecture IP based Interfaces
Flat, IP based architectureAccess Core Control
MME
IMS
HLR/HSS
InternetEvolved Node B Gateway
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LTE/SAE Requirements Summary1. Simplify the RAN:- Reduce the number of different types of RAN nodes, and their complexity. - Minimize the number of RAN interface types.
2. 3. 4. 5. 6. 7.
Increase throughput: Peak data rates of UL/DL 50/100 Mbps
Reduce latency (prerequisite for CS replacement).Improve spectrum efficiency: Capacity 2-4 x higher than with Release 6 HSPA Frequency flexibility & bandwidth scalability: Frequency Refarming Migrate to a PS only domain in the core network: CSFB for initial phase
Provide efficient support for a variety of different services. Traditional CS services will be supported via VoIP, etc: EPS bearers for IMS based VoiceFlex interface
8. Minimise the presence of single points of failure in the network above the eNBs S1-
9. Support for inter-working with existing 3G system & non-3GPP specified systems. 10. Operation in FDD & TDD modes 11. Improved terminal power efficiencyA more detailed list of the requirements and objectives for LTE can be found in TR 25.913.14 Nokia Siemens Networks RA41201EN30GLA0
Module Contents
LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary
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LTE Radio Interface Key FeaturesLTE Radio Access Network (EUTRAN) Evolved Packet Core (EPC)SAE-GW MME
eNode-B
Serving GW
PDN GW
Packet Data Network
LTE Radio Interface Key Features Retransmission Handling (HARQ/ARQ) Spectrum Flexibility
FDD & TDD modes Multi-Antenna Transmission Frequency and time Domain scheduling Uplink (UL) Power Control16 Nokia Siemens Networks RA41201EN30GLA0
EUTRAN Key FeaturesLTE Radio Access Network (EUTRAN) Evolved Packet Core (EPC)SAE-GW MME
eNode-B
Serving GW
PDN GW
Packet Data Network
EUTRAN Key Features: Evolved NodeB IP transport layer UL/DL resource scheduling QoS Awareness Self-configuration17 Nokia Siemens Networks RA41201EN30GLA0
EPC Key FeaturesLTE Radio Access Network (EUTRAN) Evolved Packet Core (EPC)SAE-GW MME
eNode-B
Serving GW
PDN GW
Packet Data Network
EPC Key Features: IP transport layer QoS Awareness Packet Switched Domain only 3GPP (GTP) or IETF (MIPv6) option Prepare to connect to non-3GPP access networks18 Nokia Siemens Networks RA41201EN30GLA0
Module Contents
LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary
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