lte – 4g technology in today’s spectrum - · pdf fileericsson confidential 1...
TRANSCRIPT
Ericsson Confidential 2009-04-201
LTE – 4G Technology in Today’s Spectrum
IEEE CVT Technical Luncheon SeriesApril 21, 2009
Hossam H’mimy, PhDDirector, Network and Technology StrategyStrategy & CTO office, Ericsson Inc.
Ericsson Confidential 2009-04-202
Reported mobile subscriptionsSubscriptions & penetration by region, End Q2 2008E
Source: Estimates based on WCIS.
This slide contains forward looking statements
Global~4.1 B61%
Latin America450 M, 73%
North America290 M, 85%
Western Europe
560 M, 121%
Middle East150 M, 60%
Asia Pacific 1.7 B, 41%
Central &Eastern Europe
490 M, 102%
Africa390 M, 34%
Ericsson Confidential 2009-04-203
0
500
1000
1500
2000
2500
3000
3500
2007 2008 2009 2010 2011 2012 2013 2014
Subs
crip
tions
(mill
ion)
Fixed Mobile
Mobile broadband
80% of Broadband subscribers are mobile in 2014
Mobile Broadband includes: CDMA2000 EV-DO, HSPA, LTE, Mobile WiMAX, TD-SCDMAFixed broadband includes: DSL, FTTx, Cable modem, Enterprise leased lines and Wireless Broadband Source: Ericsson Q4 2008
Ericsson Confidential 2009-04-204
Agenda
Broadband Wireless Market LTE/SAE Technology update
– Global Support – Standards– Spectrum
Concluding remarks
Ericsson Confidential 2009-04-205
Evolution: Technology, Business
WirelineHousehold/
business placeTelephony
MediaInternet
WirelessPeople
TelephonyMessaging
MediaInternet
FutureConnectionsNetworkingTelephony, messaging,
media, internet, control
Ericsson Confidential 2009-04-206
MBB Statistics end of 2008Mobile Broadband Wireless 3.54B GSM/EDGE/WCDMA/HSPA subs (89% Global) ( 3.77B April 20,08)
– Subs (287M WCDMA ,82.8M HSPA)– Launched Networks
275 WCDMA N/W launched in 116 countries 259 HSPA N/W launched in 111 countries
- 185 HSDPA N/W with 3.6Mbps (71%) - 90 HSDPA N/W with 7.2Mbps- 71 HSUPA N/W
– HSPA Devices 1409 different devices launched from 169 suppliers
- 348 triband 850/1900/2100- 897 HSDPA 3.6Mbps devices- 492 HSDPA 7.2Mbps devices - 242 HSUPA Devices
CDMA 467.7M (455M 1x, 112M EvDo)– Networks (271 1X, 168 EvDo)– Devices (1141 1X, 646 EvDo)
evol HSPA– Launched: 2 Evol HSPA N/W– Commitments: 19 Evol HSPA
Ericsson Confidential 2009-04-207
WCDMAWCDMAHSPAHSPA
eHSPA eHSPA
LTEeHSPALTE
eHSPA
2002 2005 2009/2010 2009/2010
384 kbps 3.6 Mbps 21/28/42 Mbps ~150 MbpsPeak rate
2007
7/14 Mbps
3GPP Mobile Broadband Speed Evolution
LTE EvolutionLTE Evolution
2014/2015
1 GbpsTarget
Availability
Ericsson Confidential 2009-04-208
LTE is the Global standard for Next Generation – FDD and TDD
CDMA Track (3GPP2)
GSM Track (3GPP)
2001 2005 2008 2010
LTEFDD and TDD
GSM WCDMA HSPA
TD-SCDMA
CDMA One EVDO Rev A
Mobile System EvolutionGlobal Support
Ericsson Confidential 2009-04-209
Global Commitment to LTE Globally 26 LTE commitments Commitments in NA **
– Verizon Wireless – Metro PCS – CenturyTel – Tellus– Bell Canada– Rogers – Cox – Aircell– AT&T Mobility – Leap Wireless – T‐Mobile USA – US Cellular
** Commitments http://www.3gamericas.org/documents/LTE%20Commitments%20Mar%202009.pdf* anticipated launch http://www.gsacom.com/downloads/pdf/lte_3gpp.php4
Vodafone
Ericsson Confidential 2009-04-2010
LTE
2004 2005 2006 2007 2008
Technical studiesSpecifications
L1
L2
L3
Perf requirements
UE conf test specs
January 2008, Rel-8 specifications approved December 2008, Rel-8 specification frozen
March 2009, ASN.1 code ready and backwards compatibility secured
LTE Standardization Update
Ericsson Confidential 2009-04-2011
LSTI : Industry Forum for LTE
Friendly customer trials
PR
2006 2007 2008 2009 2010
Public Relation work
Interoperability
Air-interface principles
IODT
IOT
Trials
Test of basic functions
Proof of ConceptSIMO MIMO
RRC Mobility
Trial StartFriendly customer trials
PR
2006 2007 2008 2009 2010
Public Relation work
Interoperability
Air-interface principles
IODT
IOT
Trials
Test of basic functions
Proof of ConceptSIMO MIMO
RRC Mobility
Trial Start
NGMN LSTI
And other sponsors
NGMN LSTI
And other sponsors
Ericsson Confidential 2009-04-2012
LTE Device IntroductionMultimode TDD/FDD device platforms are planned from several top tier vendors
Ericsson Confidential 2009-04-2013
LTE Enabled DevicesExamples
Ericsson Confidential 2009-04-2014
3GPP LTE Requirements
3GPP LTE Performance Targets Data rates
– Downlink: >100 Mbps– Uplink: >50 Mbps– Cell-edge data rates
2-3 x HSPA Rel. 6
Delay/latency– User plane RTT: <10 ms– Channel set-up: <100 ms
High spectral efficiency High Performance Broadcast
services Cost-effective migration
Ericsson Confidential 2009-04-2015
Field Results Validating Performance
Peak rates validated– 2*2 MIMO
170Mbps DL 56Mbps UL (16QAM)
– 4*4 MIMO 325Mbps DL
Multi-user performance Load in multi site networks Handover LatencyMultiple frequencies FDD and TDD
Ericsson Confidential 2009-04-2016
Key LTE Radio Access Features
LTE radio access– Downlink: OFDM– Uplink: SC-FDMA
Advanced antenna solutions– Diversity– Beam-forming– Multi-layer transmission (MIMO)
Spectrum flexibility– Flexible bandwidth– New and existing bands– Duplex flexibility: FDD and TDD
20 MHz1.4 MHz
SC-FDMA
OFDMA
TX TX
Ericsson Confidential 2009-04-2017
Downlink: Multi-layered OFDM– Channel-dependent scheduling and link adaptation in time and
frequency domain
Uplink: Single Carrier-FDMA – Higher uplink system throughput– Improved coverage and cell-edge performance– Lower terminal cost and improved battery life
Downlink Uplink
time
frequency
time
frequency
User 1User 2User 3
Transmission Schemes
IFFT Cyclic-prefi xinsertion
Cyclic-prefi xinsertion
OFDM modulatorDFT precoder
DFT IFFT
Ericsson Confidential 2009-04-2018
Physical Resources
Time domain structure:– 10 ms frame consisting of 10 subframes of length 1 ms– Each subframe consists of 2 slots of length 0.5 ms– Each slot consists of 7 OFDM symbols (6 symbols in case of extended CP)
Resource block (RB)– 12 subcarriers during one slot (180 kHz × 0.5 ms)
Resource element (RE)– One subcarier during one OFDM symbol– Modulation QPSK, 16QAM, 64QAM
One subframe (1 ms)
One slot (0.5 ms)
One frame (10 ms)
One resource element
12 sub-carriers
TCP Tu
Freque
ncy
Time
Ericsson Confidential 2009-04-2019
Improved UL performance and longer battery life SC-FDMA compared to ordinary OFDM
Single-carrier transmission in uplink enables low PAPR that gives more than 4 dB better link budget and reduced power consumption compared to OFDM
OR
Improved coverage( > 60% improvement )
Higher data rates( > 2.5 times improvement )
R M bps
2.5R Mbps
Reduced power consumptionLonger battery life
Ericsson Confidential 2009-04-2020
Bandwidth flexibility LTE physical-layer specification supports any bandwidth
in the range 6 RBs to 100 RBs in steps of one RB (1 RB=12×15 kHz)
6 RB (1.1 MHz)
100 RB (20 MHz)
Channel bandwidth BWChannel [MHz] 1.4 3 5 10 15 20
Transmission bandwidth configuration NRB
6 15 25 50 75 100
Ericsson Confidential 2009-04-2021
data1data2data3data4
TimeFrequency
User #1 scheduled
User #2 scheduled
1 ms
180 kHz
Time-frequency fading, user #1
Time-frequency fading, user #2
Channel-dependent Scheduling
HSPA – channel-dependent scheduling in time-domain only LTE – channel-dependent scheduling in time and frequency domains
Ericsson Confidential 2009-04-2022
Multi-Antenna Transmission Techniques
Diversity for improved system peformance
Beam-forming for improved coverage(less cells to cover a given area)
SDMA for improved capacity(more users per cell)
Multi-layer transmisson (”MIMO”) for higher data rates in a given bandwidth
The multi-antenna technique to use depends on what to achieve
Ericsson Confidential 2009-04-2023
UE CategoriesCategory 1 2 3 4 5
DL peak rate 10 50 100 150 300
UL peak rate 5 25 50 50 75
Max DL mod 64QAM
Max UL mod 16QAM 64QAM
Layers for spatial mux. 1 2 4
Ericsson Confidential 2009-04-2024
Current 3GPP Bands for LTE
1428-1453/1476-1501UMTS150011
1710-1770/2110-21703G Americas10
1750-1785/1845-18801700 (Japan) 9
US 700
GSM 900
IMT Extension
850 (Japan)
850
AWS (US & other)
GSM 1800
PCS 1900
IMT Core Band
”Identifier”
FDD
698-716/728-746777-787/746-756788-798/758-768704-716/734-746
12,13,1417
880-915/925-9608
2500-2570/2620-26907
830-840/875-8856
824-849/869-8945
1710-1755/2110-21554
1710-1785/1805-18803
1850-1910/1930-19902
1920-1980/2110-21701
Frequencies (MHz)Band
1880-1920China TDD 39
2570-2620IMT Extension Center Gap
38
China TDD
PCSCenter Gap
TDD 1900
TDD 2000
”Identifier”TDD
2300-240040
(1915)1910-193037
1850-19101930-1990
35,36
1900-19202010-2025
33,34
Frequencies (MHz)Band
LTE deployed in new and existing bands
Ericsson Confidential 2009-04-2025
LTE Spectrum FlexibilityUS Deployment
700MHz– Band 13 (Upper C) 10MHz FDD– Band 12 ( Lower 700)
C+B 5 & 10 MHz A+B 5 & 10MHz
AWS– A, B, F 10MHz
1900MHz, 850MHz– 1.4MHz, 3MHz spectrum constraint – 5,10MHz available spectrum
A B C
52
D E A B C
58 595453 5655 57
698 MHz 704 740734728722710
806MHz
C
Lower 700 MHz
60 61 62 63 64 65 66 67
752 782 788758
68 69
A
716 746 764
D C A DPublic Safety
770 776 794 800
Public Safety
Upper 700 MHz
B B
LTE provides solution for many Spectrum scenarios
Ericsson Confidential 2009-04-2026
Low OpEx from StartThrough Self Organizing Network - SON
S-opt
plan
deploy
maintainoptimize
S-heal
S-conf
Self-Configuration
Self-Optimization
Self-Healing
Ericsson Confidential 2009-04-2027
HSS • Maintain and provide subscription data• User Identification handling• Access Authorisation• Prov ide Keys for Authenticationand Encryption
• User Registration management• Maintain knowledge of used PDN GW
LTE architecture details
PDN GW
Serv GW
PCRF
LTE
S1-MME S1-U
S10
S11
S5/S8
SGi
Gx
ExternalIP networks
Rx
X2eNB
HSS
IMS
S6a
MME
MME• Authentication• NAS signalling• GW selection• Roaming (S6a to home HSS)• Bearer management• Idle mode tracking• Paging• Inter-MME and IRAT mobility• NAS Ciphering and Integrity protection
SAE GW
PDN GW part:
• External IP point of interconnect• IP address allocation• Packet routing & forwarding• Lawful intercept• Policy enforcement• In home or vistied network
S GW part• In v isited network in case of roaming• Intra-LTE mobility anchor• Packet routing & forwarding• Lawful intercept • LTE idle mode DL buffering • Charging per UE, PDN and QCI• Bearer bindings for PMIP S5/S8
PCRF
• Provides Serv ice Data Flow gating• Set QoS for each Service Data Flow• Define Charging for each Service Data Flow• Enables Bearer QoS Control• Correlation between Application and Bearer charging• Notification of bearer events to application function• Bearer bindings towards Serv -GW for PMIP based S5
eNodeB
• Cell resource management • Broadcast information • MME selection • Transfer of transparent NAS signalling• Routing of user data towards the S-GW• Intra-LTE handov er, inter-MME pool handover
initiation, inter-RAT handov er initiation• QoS realization • Security
S9
Ericsson Confidential 2009-04-2028
HSS
HLR
MMESGSN
PCRF
2G 3G
Gb Iu-C
S3
S4
S1-C S1-US12
S11
S10
SGi
S7
IP networks
S6a
Gr
SAE (EPC) architecture 3GPP operator
• Common GW for all accesses• Core network pooling for LTE access• Policy control also supporting LTE•Smooth interworking 2G/3G – LTE• 3G Direct Tunnel for HSPALTE
PDN GW
Serv GW
S5
SAE GW
Ericsson Confidential 2009-04-2029
SAE Architecture 3GPP2 operator
• Migration to 3GPP SAE architecture• Legacy CDMA terminal support in CDMA PDSN and HA• Smooth interworking 2G/3G - LTE•Policy control for both CDMA and LTE• Support for both GTP and PMIP for roaming
PCRF
S103
S1-C S1-U
S11
S10
SGi
Ty/S7a
IP networksS6a
LTE
S2a
MME
A10/A11 A10/A11S102
1xRTT EV-DO
S101
S6cIS-835
PDSNHSGW
S7PDN GW
Serv GW
S5 IETF, (GTP)
SAE GW
TaAAA
IS-835
P-P
S7c
HA
HSSAAA
Ericsson Confidential 2009-04-2030
LTE Success
Capital Protection
Easy UpgradeBackwards CompatibilitySpectrum
OPEX
Network PerformanceEase of OperationEase of ExpansionCost effeciencies
Revenue Price PlansService OfferingApplication Enablers
Performance
Speed, QualityUser FriendlinessApplications
Service Anytime, Anywhere, Any DeviceCoverage
RoamingVariety of Devices
Price
Service PlansAffordable Devices
Economies of Scale – LTE is Building on the Success of GSM/HSPA/EvDo
Techno-Economic Drivers of LTE SuccessClosing Remarks
Ericsson Confidential 2009-04-2031