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Sungjin Kim, Junghoon Suh, Joon-il Choi, Daegyun Kim, Donghee Kim Samsung [email protected]
ABSTRACT: This contribution introduces our view on the Trend which will evolve from single user capacity improvement with link enhancement to system capacity enlargement by interference cancellation.
TITLE: Core Technology for UMB Evolution
TSG-C
RECOMMENDATION: FYI
Samsung Electronics grants a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. Samsung Electronics is also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard which incorporates this contribution.This document has been prepared by Samsung Electronics to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on Samsung Electronics . Samsung Electronics specifically reserves the right to amend or modify the material contained herein and to any intellectual property of Samsung Electronics other than provided in the copyright statement above.
DATE: Dec. 03, 2007
SOURCE:
C00-20071203-019
2
BeyondUMB Ev.
(3D Video)
BeyondUMB Ev.
(3D Video)
UMB Ev.IMT-Adv(MPEG)
UMB Ev.IMT-Adv(MPEG)
UMB(WEB)UMB(WEB)
1xEvDo(VoIP)
1xEvDo(VoIP)
Prediction: Capacity Trend of Next G. Wireless Comm.Prediction: Capacity Trend of Next G. Wireless Comm.
AMCx5OFDM x5AMC x10
10M10M 100M100M10G10G
MIMO, OFDMAMC
New MIMO x10
Trend will evolve from single capacity increase with link enhancement
to system capacity enlargement by interference cancellation.
Trend will evolve from single capacity increase with link enhancement
to system capacity enlargement by interference cancellation.
MIMO x4OFDM x25AMC x10
1G1G
3
Innovations for Wireless Communication ResearchInnovations for Wireless Communication Research
Research
Contents
Research
Contents
Next GenerationWireless Communications
Next GenerationWireless Communications
Research
Method
Research
Method
Research
Direction
Research
Direction
Continuity with previous research directions?
Enhancement for single radio link etc
Continuity with previous research directions?
Enhancement for single radio link etc
Are current research methods suitable?
Common major, Common area, etc.
Are current research methods suitable?
Common major, Common area, etc.
What is the key technology leading to
innovation ?
MIMO, CR, Relay?
What is the key technology leading to
innovation ?
MIMO, CR, Relay?
ss
Which part of the innovation gives great
efficiency ?
4
Research approaches of other institutes Research approaches of other institutes
Research
Method
Research
Method
• Operator (Vodafone), Chip Vendor (Intel)
• UK Research Institute (Ofcom), Wireless operator (Nokia)
• Operator (Vodafone), Chip Vendor (Intel)
• UK Research Institute (Ofcom), Wireless operator (Nokia)
Research
Direction
Research
Direction
• Application (Alcatel, DoCoMo & Motorola)
• Wireless device (WWRF), Network (Consortium)
• Application (Alcatel, DoCoMo & Motorola)
• Wireless device (WWRF), Network (Consortium)
Research
Contents
Research
Contents
• Area : Canada CRC, North America CISCO
• Key Tech. : North American Universities, Europe Easy-C
• Area : Canada CRC, North America CISCO
• Key Tech. : North American Universities, Europe Easy-C
Current Status of Wireless Comm. ResearchCurrent Status of Wireless Comm. Research
5
• Social networking • Social networking
Comparison and analysis of research approaches for different companiesComparison and analysis of research approaches for different companies
Research DirectionResearch Direction
Research Method
Research Method
Research ContentsResearch Contents VisionVision
• Collective communications • Collective communications
• System-level research• System-level research • Small spatial interference• Small spatial interference
Summary of Current Status of Wireless Comm. ResearchSummary of Current Status of Wireless Comm. Research
6
Research Method(Development/Outsourcing)
Research Method(Development/Outsourcing)
Application/Wireless Device(Voice Device)
Application/Wireless Device(Voice Device)
Network(Cellular Convergence Network)
Network(Cellular Convergence Network)
Research Contents(Enhancement for single radio link)
Research Contents(Enhancement for single radio link)
Consulting/Crowd sourcingConsulting/Crowd sourcing
Unifying diverse wireless devices
Collective Comm.Unifying diverse wireless devices
Collective Comm.
United Network Including MeshUnited Network Including Mesh
System Performance Enhancement(high efficiency/low cost)
System Performance Enhancement(high efficiency/low cost)
Summary of Research for Next G.Summary of Research for Next G.
7
Collective CommunicationsCollective Communications
2G/3G (1km)2G/3G (1km)
WiMAX (100m)WiMAX (100m)
4G4GW-LAN (10m)W-LAN (10m)
Short range (1m)Short range (1m)
Single CommunicationSingle Communication
New Point to Point SchemeNew Point to Point Scheme
STANDARD
STANDARD
EvolutionEvolution
EvolutionEvolution
EvolutionEvolution
EvolutionEvolution
Collective CommunicationCollective Communication
Convergence and Enhancement of Previous Standards
Convergence and Enhancement of Previous Standards
Always in BetaAlways in Beta
2G/3G (1km)2G/3G (1km)
WiMAX (100m)WiMAX (100m)
W-LAN (10m)W-LAN (10m)
Short range (1m)Short range (1m)
CoordinationCoordination
8
Solution: Previous MIMO Work Extended spatial processing for wireless link research
Multi-Beam SteeringMulti-Beam Steering
Distr./Network MIMODistr./Network MIMO
On-Chip Antenna ArraysOn-Chip Antenna Arrays
New MIMONew MIMO
Required Core Tech.Required Core Tech.
9
New MIMO Schemes of Other Companies New MIMO Schemes of Other Companies
New MIMO Schemes Increase System Capacity Required to keep pace with proposed novel scheme and research for optimal joint searching
New MIMO Schemes Increase System Capacity Required to keep pace with proposed novel scheme and research for optimal joint searching
3: Good 2: Enough 1: Moderate
10
MIMO
Competitive Advantage Strategy Compared to Previous Approach - Key point is to establish B4G SDMA oriented preceding core patent earlier than other companies. B4G Network Adjustment High freq/Large Scale Beamforming B4G Network Utilization Cooperative/Distributed MIMO
1980 1990 2000
GSM WCDMAHSPA
LTEGPRS/EDGE
GSM/GPRS/EDGE WCDMA/HSPA
Standardization
Commercialization
3GPPMobile Comm
2007 2010
LTE+
BF
Intelligent Antenna Standardization Status
Antenna Selection 4 beam selection16 beam selection
# Ant
Diversity Multiplexing
2Tx 2Tx*2Rx 4Tx*2Rx
Smart antenna
Interf. Cancellation for
tens of beams
>8Tx*4Rx
3G 4GB4
G2G
Frequency Band
1GHz 2GHz 4~6GHz • ~10 GHz
• ~10 EA
• DP/WZ Coding
• 3D BF
• SDMAUn-deployable, Un-commecialized
STC DPC
Adaptive
Beyond-IMT
CooperativeMIMONetwork
Utilization
Non-cooperativeMIMO
1
2
Approach for InnovationsApproach for Innovations
1 2
Semi-cooperativeMIMO
More MIMO
More than MIMO
Impact of BeamformingImpact of Beamforming
• Theoretically, beamforming can increase the capacity up to #antennas - A solution to solve the limited bandwidth
Downlink channel
, 1, ,Hi i iy n i K h x
Fundamental Problems in BeamformingFundamental Problems in Beamforming
•Beamforming requires user information such as location - In rich scattering environments, more than x10 feedback is necessary
Jindal 2006: 5 by 5 MIMO broadcast channel
Ideal feedback
GapLimited feedback cases
Beamforming performanceis reduced
User cooperation for beamforming enhancementUser cooperation for beamforming enhancement
• User cooperation removes the remained spatial interferences Translated MISO to MIMO
,1 ,1
,2 ,2
1 2
, ,
( )
i i
i i
Hi K
i i
i K i K
y ny n
y n
y n
y h h h x
i i i y Hx A n
,1
,2
1 2
,
0 00 0
( ) , ,1
0 0
i
i
HK i i
i
i K
nn
n
n
H h h h A n
, 1, ,Hi i iy n i K h x
nyy1
1'
1,2
nyy1
3'
3,2
1y
2y
3y
4y nyy1
4'
4,2
ny 1amplifyforward
y1 의 noisy version
nniH
1
1 xh
1)1
1(2
1
1,21 nH xh
Technical SummaryTechnical Summary
Full CSIT
Imperfect CSITImperfect CSIT
Full CSIT
• Practical system has limited CSI there is gap b/w SU-MIMO and MU-MIMO
Robust to CSIT error
User Cooperation Compensate CSIT error
Sensitiveto CSIT error
gap