RA4120-30A - LTE RPESS LTE EPS Overview

1

Nokia Siemens Networks

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.

2

Nokia Siemens Networks

RA41201EN30GLA0

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

3

Nokia Siemens Networks

RA41201EN30GLA0

Module Contents

LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary

4

Nokia Siemens Networks

RA41201EN30GLA0

Module Contents

LTE Requirements LTE Key Features LTE Standardization LTE Architecture Evolved NB functionalities EUTRAN Interfaces LTE Terminals LTE Summary

5

Nokia Siemens Networks

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.

6

Nokia Siemens Networks

RA41201EN30GLA0

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

9

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

10

Nokia Siemens Networks

RA41201EN30GLA0

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

12

Nokia Siemens Networks

RA41201EN30GLA0

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

13

Nokia Siemens Networks

RA41201EN30GLA0

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

15

Nokia Siemens Networks

RA41201EN30GLA0

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

19

Nokia Siemens Networks