EASY-C Enablers for Ambient Services and Systems … –Enablers for Ambient Services and Systems...
Transcript of EASY-C Enablers for Ambient Services and Systems … –Enablers for Ambient Services and Systems...
Outline
2
Overview
Presentation
Next Generation Cellular Networks
Overview on the Project EASY-C
EASY-C Test Beds
Recent Achievements
Outline
Overview
Presentation
3
Next Generation Cellular Networks
Overview on the Project EASY-C
EASY-C Test Beds
Recent Achievements
Next Generation Cellular NetworksRequirements
Overview
Presentation
4
Click & Bang Click&WowLower Cost
per Bit
Low Latency FairnessHigh
Spectral Efficiency
Flexible
Spectrum
Usage
Streaming
Inexpensive Throughput
Anytime, Anywhere
Requirements as identified by the EASY-C consortium
Next Generation Cellular NetworksRequirements
Overview
Presentation
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Source: http://www.ngmn.org
Requirements according to NGMN• Fairness
• Low Latency
• Spectral Efficiency
Next Generation Cellular NetworksFairness Aspect addressed in LTE Release 8 / WiMAX
Overview
Presentation
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eNodeBeNodeB
Low SINR
Low data rate
LTE Rel. 8 / WiMAX do not sufficiently address fairness !!!
High SINR
High data rate
High SINR
High data rate
Next Generation Cellular NetworksSpectral Efficiency Aspect addressed in LTE Release 8 / WiMAX
Overview
Presentation
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1st/2nd generation
• Bad spectral
efficiency through
high reuse factors
LTE Advanced
• Interference shaping
and exploitation
through distributed
MIMO and relaying
LTE Rel. 8
• Target of Reuse
Factor 1, interference
suppression through
classical MIMO
LTE Rel. 8 / WiMAX still strongly limited through interference !!!
Next Generation Cellular NetworksKey Technologies
Overview
Presentation
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Technologies identified by LTE advanced task force
Technologies investigated in project EASY-C
Coordinated multi-point(CoMP)
Multi-antenna Techniques
Relay Functions
Inter-cell Interference Management
Self-optimizing Networks
Spectrum Aggregation
CoMP- driven by partners TUD, HHI, ALU, Qualcomm, Vodafone
Multi-antenna Techniques- driven by ALU, HHI, DTAG, Ericsson, Ubidyne, Vf
Inter-cell radio resource management- driven by ALU, DTAG
Relaying, Self-backhauling- driven by Ericsson, TUD
Self-optimizing Networks- driven by DTAG, Qualcomm
Spectrum Aggregation
Uplink Transmission
SchemeCoMP*
Downlink Transmission
Scheme
3GPP LTE-Advanced Key Technologies
RelayingEnhanced
MBMS
Next Generation Cellular NetworksKey Technologies
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Overview
Presentation
Antennen -Konzepte & Deployment
EASY-C
CoMP = Coordinated Multi-point Transmission and Reception
MBMS = Multimedia Broadcast / Multicast Service
Next Generation Cellular NetworksCoordinated Multi-Point (CoMP) transmission
Centralized concepto Motivated from information theory
o Upper bound: interference-free cells
o Central unit (CU) is genius (CSI+data)
o Pre-computes all waveforms
o Sends them via remote radio heads
• High backhaul traffic (several Gbps)
• High latency requirements (few µs)
Distributed concepto Terminals feed back CSI to serving BS
o BS exchange data and CSI
• Less backhaul traffic (some 100 Mbps)
• Relaxed latency reqs. (some ms) o Each BS is now a genius
o Redundant computation of precoder
o Apply locally relevant weights
o Coherent signals superpose constructively and o interference destructively over the air
Overview
Presentation
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Outline
Overview
Presentation
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Next Generation Cellular Networks
Overview on the Project EASY-C
EASY-C Test Beds
Recent Achievements
Overview on the Project EASY-CKey Facts
Overview
Presentation
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Project duration:
Budget:
Coordination:
Partners involved:
Main features:
April 2007 – September 2010
Approx. 47M€ , partially funded by the German Ministry for Education and Research (BMBF)
Prof. Dr.-Ing. Gerhard Fettweis
Vodafone Chair, TU Dresden
Network providers, system vendors, mobile terminal and chipset vendors, various start-ups and research entities
Covering concept research, field trial andterminal development in one project
Operating the largest research test beds forLTE advanced in the world
Overview on the Project EASY-CThe Project Consortium
Overview
Presentation
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Rosenheim
Dresden
Nürnberg
Ulm
Stuttgart
Darmstadt
Paderborn
Bonn
Düsseldorf
Berlin
München
Aachen
Mainz
Overview on the Project EASY-CProject Structure
Overview
Presentation
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2.1 Specification
1.1 Algorithm & Concept Exploration
1.2 Algorithm Classification & Selection
2.2 Implementation
2.3 Lab Test
2.4 Field Test
3.1 Specification
3.2 SoC Architecture
3.3 Implementation
3.4 Demonstrators
1.3 Assessment & Dissemination
WG 1
Algorithms & Concepts
WG 2
Technology Test Bed
WG 3
Hardware Architecture
Working Groups
Alcatel-Lucent
BNetzA
Dt. Telekom
Ericsson
FhG HHI
IFX/Comneon
Kathrein
Qualcomm
Actix
Signalion
TES
TU Dresden
Ubidyne
Uni Paderborn
Vodafone
Overview on the Project EASY-CResearch Approach
Overview
Presentation
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Innovative Concepts & Algorithms
System & Link Level Simulations
Raytracing Models
TestbedsImplementation &
Performance Measurements
Channel Measurements
Hardware Architectures
Assessment
Standardization
1) Performance
Prediction
2) Channel Model
Coefficients
based on Field
Measurements3) Smarter
Simulation
Models
Trial Results
Selected Algorithms
•KEY POINTS:
•Algorithm Implementation
on real Hardware
•Performance Measurements
under realistic Conditions
Evaluation through Simulation and Field Test Measurements
Overview on the Project EASY-CResearch and Trial Concept
Overview
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SoA1
Evaluation of LTE
rel. 8 implementation
in UL/DL
without extensions
SoA2
Multi-user MIMO
within cells,
static int. coord.,
UL CoMP
SoA3
Multi-cell CoMP,
distributed radio,
resource management
„Next generation
evolution
approach“
„Next generation
exploration
approach“
SoA1
UL multi-cell CoMP
-Channel est.
- Synchronization
SoA2
UL/DL multi-cell CoMP
- Power control
- Improved schemes
SoA3
UL/DL multi-cell CoMP
- Relaying
- Improved Schemes
- Distributed RRM
Basis: Implementation close to LTE Release 8
Basis: Proprietary implementation with basic LTE Rel. 8 compatibility
Overview on the Project EASY-CFairness and Spectral Efficiency Targets
Overview
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*) all figures relative to LTE rel. 8
Average Cell-edge
UL
DL
+100%
+50%
+200%
+100%
System Perf. Requirements Rel. 8 LTE LTE-Advanced IMT-Advanced
Peak data rateDL 300 Mbps 1 Gbps
1 GbpsUL 75 Mbps 500 Mbps
Peak spectrum efficiency [bps/Hz]
DL 15 30 15
UL 3.75 15 6.75
Outline
Overview
Presentation
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Next Generation Cellular Networks
Overview on the Project EASY-C
EASY-C Test Beds
Recent Achievements
EASY-C Test BedsDresden Test Bed Setup
Overview
Presentation
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LTE-Advanced testbed with a total of 10 sites and 28 sectors
Hbf-
Süd
-
Hbf
Lenné-
platz
WTC
Mitte
Postplatz
Karstadt
Congress
Center
Fritz-
Förster-
Platz
Strass-
burger
Platz
T-Mobile site
Vodafone site
ICC’09 location
• Microwave links between sites
• Focus on physical layer; only
minimal MAC layer implemented
• Sites synchronized through GPS
and reference normals
• Rikscha concept for
prototype user equipment
• Testbed fully deployed
in April 2009
EASY-C Test BedsDresden Test Bed Infrastructure
Overview
Presentation
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Each sector served by prototype eNB
Each site has a control computer
Control computers are connected via
Motorola Canopy backhaul
Each site has a GPS-based Meinberg
reference normal
for synchronization
The infrastructure is
connected to the
TUD intranet /
to the Internet
Hbf-Süd
Hbf
eNB
eNB
eNB eNB
eNB
eNB
eNB
GPS
Normal
GPS
Normal
GPS
Normal
EASY-C Test BedsDresden Test Bed Uplink Setup
Overview
Presentation
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Uplink Features
Focus on PHY
Partial compatibility to LTE Rel. 8
Offline signal processingQuasi-
realtime scheduling possible
Control ComputerControl Computer
UEUE
eNBeNBeNB
UE
Trans-
mission in
PUSCH
Decode
PDCCH and
UL grant
Output of
CQI info
Sync
Send
PDCCH
DFT
(optional)
Sync
Dump
received
signals
Control Computer
Channel
Estimation
Config
data
Air interface
MATLAB
Signal ProcessingMATLAB
Signal ProcessingMATLAB
Signal Processing
GUI
File
Server
EASY-C Test BedsDresden Test Bed Equipment
Overview
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Radio Unit
Digital
Processing
Unit
Signalion Sorbas Platform
EASY-C Base Station Equipment EASY-C Mobile UEs
EASY-C UE and Basestation HW
Signalion‘s LTE Test UE Solution is used with
minor EASY-C specific modifications
EASY-C Basestation also implemented on
Signalion‘s modular Sorbas HW Platform with
limited functionality tailored to the project goals
Implementation of LTE advanced concepts on
BS side done jointly by project partners
EASY-C Test BedsDresden Lab Setup
Overview
Presentation
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On the roof of the TUD, two sectors have been installed
Indoor or Outdoor
Terminals
Amateurfunk
Tower
BARKHAUSENBAU,
TU Dresden
IfN Tower
X-Pol Antenna from
KATHREIN and
Motorola Canopy Link
Mobile Lab Test
Terminal
LTE-Advanced testbed with a total of 4 sites and 7 sectors
EASY-C Test BedsBerlin Test Bed Setup
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Overview
Presentation
Airlaser
Air
lase
r
optical
fiber network
1
2
3
4
• Laser links / fibre-optic
cables between sites
• Complete LTE Rel. 8
protocol stack / IMS sub-
system
• Focus on end-to-end
demonstrations
Highlights of LTE trial system
2.6 GHz, 20 MHz bandwidth
2x2 MIMO with MIMO mode switching
(MRC and MMSE)
Frequency-selective link adaptation
Timing advance, power control
Multi-user MIMO
Unicast and broadcast
CoMP
Panoramic view from T-Labs site
HHI
EASY-C Test BedsBerlin Test Bed Setup
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Overview
Presentation
EASY-C Test Beds Test Scenario in Berlin
SiegmundsHof
HHI
TUBT-Labs
test area
Multi-cell scenario
Interference Rejection
Active Interference
Mgmt
CoMP / Network MIMO
Localization aware
Service Provisioning
Outline
Overview
Presentation
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Next Generation Cellular Networks
Overview on the Project EASY-C
EASY-C Test Beds
Recent Achievements
Recent Achievements Selected Demonstrations in the Past
Overview
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February 2008
May 2008
June 2008
March 2009
Berlin
Dresden
Berlin
Berlin
• LTE rel. 8 downlink trial with
adaptive open/closed loop precoding
• Uplink multi-cell joint detection
demonstrated in laboratory
• Large-scale LTE rel. 8
measurement campaign with
throughput up to 150Mbit/s
• Uplink multi-cell joint detection
demonstrated live at a public
workshop in downtown Dresden
• IP-based mobile video conference
over MU-MIMO-enhanced LTE to a
test terminal in a car
December 2008 Dresden
June 2009 Dresden • 4 live demos over the air at ICC‘09
Recent Achievements Key CoMP Challenges Identified
Overview
Presentation
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The consortium has gained vast experience in the implementation and
challenges connected to coordinated multi-point (CoMP):
System partitioningReducing Backhaul /
Infrastructure Aspects
Scheduling
Synchronization in
time / frequencyChannel estimation
&
Obtaining transmitter-
side CSI at eNBs
Impact of network MIMO
on higher protocol layers
Recent Achievements Public Visibility
Overview
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EASY-C is by now well-known in the mobile communications community
The public workshop collocated with an LSTI meeting in December 2008 was a
great success more than 120 participants from all over the world
Project partners have generated a vast number of publications connected to
EASY-C, including a Communications Magazine article which appeared in
February 2009
The International Conference on Communications (ICC‘09) in June 2009 in
Dresden with 1500+ participants has further increased the visibitily of EASY-C
50 m2 joint EASY-C booth
4 live demonstrators over the air
„International Workshop on LTE Evolution“ attracted ~80 participants
EASY-C has already left a major footprint in LTE-Advanced standardization
2 base stations, 2 terminals, measured multicell channel in between
Distributed CoMP demo by Heinrich-Hertz-Institute and Deutsche Telekom
Recent AchievementsDemo Setup at ICC 2009, Dresden, Germany
Overview
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Recent AchievementsCoMP Live Demo at ITU Meeting in Dresden
Demonstration of novel Downlink CoMP Transm. from 2 eNBs to
2 Ues schemes at ITU-R SG5 WP5D Meeting
Decentralized eNB Cooperation
Strong level of interference cancellation
Strong spectral efficiency improvements
Overview
Presentation
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C ChainC ChainC Chain
C ChainC ChainUE
Control ComputerControl Computer
eNBeNBeNB
Coarse
Sync
Dump
received
signals
CSI Trans-
mission
in PUSCH
Sync
Decoding of
CSI in
PUSCH
Real-time
linear
precoding
Enhanced
channel
estimation
Control Computer
Config
data
Debug
information
Air interface
Real-time
modulation
and coding
CSI
Feedback
generation
Fine sync
Channel
estimation
LTE Rel.8
emulation
GUIDecoding
ChainEqualization
Recent Achievements First Multiuser-MIMO Field Trial in Berlin 2008
Single-user throughput with 2° down-tilt
Main result: Multi-stream becomes dominant with MU-MIMO
AmateurfunkTowerBS 2
BARKHAUSENBAU,TU Dresden
IfN TowerBS 1
18.1
7.9
13.316.1
16.3
13
• Maximum Sum Throughput
Conventional [Mbps]
CoMP [Mbps]
Recent AchievementsUplink CoMP Measurement Results by TU Dresden in 2009
Overview Presentation
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Joint detection of both terminals by a
central compute node
Recent Achievements DL Throughput SU MIMO without IF in Dresden Testbed
Distance (rel Units)
Nürnberger PlatzHBF
Drive Test Route:
Downlink Throughput SU MIMO:
Band 7 (2.6 GHz)
Bandwidth: 10 MHz
eNB-Prototype
Test Mobile
Peak Data Rate (avg): 50.8 Mbps
Peak Data Rate (spike): 69 Mbps
(64QAM CR 0.9 ;TFRC70)
Overview
Presentation
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ALU eNodeB