Part4 - Strategy
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12/12/08 1-
Part 4 – Strategy & trials
Pierre Lescuyer
DIAM
12/12/08 2LTE Part 4 - DIAM
Content
LTE / SAE Macro-planning
Spectrum considerations
Usage
SFR on-going or planned activities on trials LSTI (LTE SAE Trial Initiative)
LTE trial network in SFR
12/12/08 3LTE Part 4 - DIAM
Synthèse Stratégie
L’efficacité spectrale de LTE est meilleure que celle de WiMAX, et comparable à celle de HSPA+.
LTE sera un relais de capacité pour SFR à partir de 2015 – principalement pour un usage data 2015 en raison du timing de disponibilité d'équipements matures réseau et terminaux
La structure de coût de la technologie associée au mode de déploiement macro apparaît encore inadaptée à une offre data pour un marché de masse
Besoins capacité x10 et coût qui devra baisser dans les même proportions
Les fréquences 2,6GHz et UHF sont les meilleures candidates pour SFR pour un déploiement LTE. Les fréquences 2,1 GHz et 900 MHz ne sont pas adaptées à LTE pour SFR dans les 10 prochaines années.
Pertinence de la bande 1800 MHz en cours d'évaluation
Fort impact d'un 4ème entrant sur la stratégie fréquence
(Source: SFR/DS – étude stratégie LTE - juin 2008)
12/12/08 4LTE Part 4 - DIAM
Macro planning – current vision
2009
2010
2011
2012
2013
2014
2015
Stable LTE/SAE standard
Mass Market deploymentLTE as a capacity layer
data cardCommercial availability
Trial start up
First trial equipment available
RU30 HSPA+ deployment
Hot Spot deployment
handsetCommercial availability
Availability of maturenetwork equipments
12/12/08 5LTE Part 4 - DIAM
LTE spectrum
2008 2010 2012 2014 2016 2018 2020
UMTS900 Roll-out
UMTS
2.6 GHz
2.1 GHz
900 MHz
1800 MHz
900 MHz
GSM
URBAN AREAS
RURAL AREAS
in 2x20MHz for hot spot (limited coverage)
not enough spectrum available for LTE
UHF
GSM Phase Out ?
LTE
UMTS (or LTE ?)
LTE
GSM
UMTS
LTE
LTE launch on Hot Spots
HSPA+ launch on Hot Spots
in 2x10MHz first (better coverage than 2.6)
in 2x10MHz
12/12/08 6LTE Part 4 - DIAM
Need for ARCEP positioning (as long as LTE is not an official IMT-2000 technology)Need for ARCEP positioning (as long as LTE is not an official IMT-2000 technology)
LTE – About spectrum (the French view)
New 4G spectrum
900 MHz bandSeems difficult…GSM900 is only 25 MHz FDD spectrumGSM will not disappear within the next 10 years
1800 MHz bandWhy not…but requires some GSM refarming (each operator has ~24 MHz today)
2100 MHz bandWhy not…but very little room (only 15 MHz free today)
2600 MHz bandWhy not…but cells will be even smaller than in 2100 MHz
Bands have been identified by the WRC-07 but nothing was concludedNeed to wait for the next WRC in 2011790-862 MHZ (UHF TV) … 3.4 to 3.6 GHz band …
790-862 MHz bandWhy not…Amount of spectrum is quite limited: 3 x (10MHz in FDD)
12/12/08 7LTE Part 4 - DIAM
Spectrum overview in France
900 UL 875 880 890 900 905 915
900 DL 920 925 935 945 950 960
40 MHz GSM-R BYTCanaux 975 1024 1 50 51 74 75 124
1800 UL 1710 1713 1737 1758 1785
1800 DL 1805 1808 1832 1853 1880
75 MHz SFRCanaux 512 525 527 645 647 751 753 885
UMTS UL 1920 1935 1950 1965 1980
UMTS DL 2110 2125 2140 2155 2170
60 MHz
TDD 1900 1905 1910 1915 1920
20 MHz BYT Lot B Orange SFR
UHF DL 790 800 810 820
UHF UL 832 842 852 862
30 MHz
LTE UL 2500 2570
LTE DL 2620 2690
70 MHz
Lot B Orange
??
SFR
BYTOrange SFR
? ? ?
BYT Orange
SFR BYT
To be defined
12/12/08 8LTE Part 4 - DIAM
LTE Spectral efficiency
HSPA R6 WiMAX
LTE
HSPA+
Maximum theoretical bit rate
Expected spectral efficiency 0.7 b/s/Hz 1.6 b/s/Hz 2 b/s/Hz
10Mb/sover 5MHz
25Mb/sover 5MHzMIMO 2x2
100Mb/sover 20MHzMIMO 2x2
42Mb/sover 5MHzMIMO 2x2
x3
-20%
LTE interest lies in data capacity extension Little interest for cells below 20MHz BW (reduced spectrum efficiency & "HSPA+" competition)
12/12/08 9LTE Part 4 - DIAM
LTE trial network in SFR
Field validation of LTE theoretical values Which performances ?
What about LTE real bit rate performances ?
What are LTE real capacity improvements
SFR deployment strategy validation – in terms of: Frequency and deployment grid
Frequency reuse scheme
Antenna solutions
High
Level
Objectives
12/12/08 10LTE Part 4 - DIAM
LTE trial objectives
2 main LTE test areas:
LTE engineering and performance evaluation P1: Link budget and coverage evaluation – comparison with 3G/HSPA performances
P1: Field performance
P1: Site engineering validation and compatibility over existing equipments
P2: Test of available mechanisms to support reuse-1 (depending on number of terminals available) ICIC (Inter-cell Interference Coordination)
QOS aware scheduling
Soft frequency reuse
LTE functional testing P1: Basic data session setup
P2: intra-LTE mobility – test of X2 lossless mechanisms, test of intra-LTE hard handover
P3: inter-system mobility – for data application / test of "CS Fallback" mechanisms (depends on EPC
solution availability)
P3: Scheduling performance - using different RT & NRT applications
P1: High
P2: Medium
P3: Low
12/12/08 11LTE Part 4 - DIAM
LTE trial objectives – as in RFI
HW/SW Requirements
Multi-cell environment 2 to 3 eNodeB at 2.6 GHz
20MHz bandwidth FDD cells in MIMO 2x2
Test of various antenna schemes including new wideband antennas
LTE cells co-located with 3G 2.1 GHz sites
At least 3 data-only LTE terminals
Mechanisms to generate artificial load should also be available
Starting time as soon as Q4 2009
Besides…
EPC solution is also need (emulation ? all-in-one box ?)
1800 MHz and UHF spectrum to be also considered ?
12/12/08 12LTE Part 4 - DIAM
SFR and LSTI
LSTI stands for "LTE SAE Trial Initiative"
LSTI is a joined initiative with the following objectives Demonstrate 3GPP LTE/SAE capabilities
Stimulate development of LTE/SAE ecosystem
Promote Industrialization of LTE/SAE
Check http://www.lstiforum.org
12/12/08 13LTE Part 4 - DIAM
SFR and LSTI
Main Telecom players are all part of LSTI
… …
LSTI framework – 3 main phases Proof of Concept: Layer 1 testing of pre-standard solutions
Inter-operability Testing: Early verification of key interfaces using standard compliant equipments
Friendly Customer Trials: System testing using commercial equipments in medium size clusters
Vendors Operators
12/12/08 14LTE Part 4 - DIAM
SFR and LSTI
The overall LSTI roadmap…
Most probably going to slip over the next few months (due to delayed stable and mature standard delivery)
12/12/08 15LTE Part 4 - DIAM
SFR and LSTI
LSTI is a closed NDA-protected forum
You need to be part of it to know what's going-on !!
SFR is not yet in LSTI but currently engaged in the application process
Results will be known very soon !!
SFR is planning to contribute (and get access) to the Trial phase including: the test plan description
the definition of targets and objectives in the scope of new services and end-user expectations
the analysis and feedback on results obtained from the trials
12/12/08 16LTE Part 4 - DIAM
Some last words (as of today…)
LTE should not be seen as a high bit rate technology but rather a capacity technology high bit rate are only available close to the antenna
At cell edge, LTE and HSPA/HSPA+ should perform equally
Is there any incentive to support for Voice over LTE ? CS Voice over HSPA will improve voice support efficiency by 20-30%
Interest of added-value services combined with Voice over LTE is to be studied
Any interest for cell bandwidth below 20MHz ? Dual Carrier HSPA+ is going to be as efficient as LTE over 10MHz
But… LTE will be more future proof
Which kind of coverage for LTE ? 1800 MHz would provide continuous service
Or extensive hot spot strategy at 2600 MHz ?
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