SWAN: an Open Wireless Testbed for IMT-Advanced Technologies Dr Yang Yang Shanghai Research Center for Wireless Communications SIMIT, Chinese Academy of Sciences UC4G Shanghai Workshop, 12 September 2010
SWAN: an Open Wireless Testbed
for IMT-Advanced Technologies
Dr Yang Yang
Shanghai Research Center for Wireless Communications
SIMIT, Chinese Academy of Sciences
UC4G Shanghai Workshop, 12 September 2010
Outline
• About Shanghai Research Center for
Wireless Communications (WiCO)
• SWAN: Shanghai Wireless Advanced
Network
Software simulation platform
Indoor testing platform
Outdoor mobile environment
Application demonstration platform
• Case studies and demos
WiCO: Shanghai Research Center for Wireless Communications
MOST: International Center for Wireless
Collaborative Research
MOST: International Collaboration Base of Science &
Technology
STCSM: Research and Engineering Center for Broadband
Wireless Communication Technologies
CAS: Key Lab of Wireless Sensor Networks & Communications
Science and Technology Commission of Shanghai Municipality
Chinese Academy of Sciences (CAS), Shanghai
Institute of Micro-system and Information Technology
Changning District Government, Shanghai
Southeast University
Cell C
Cell ACell B
Cell ACell B
(a) (b)
(c)
Cell A
Cell B
Cell ACell B
(d)
Research Focuses and Expertise
• Cognitive radio and dynamic spectrum access
• Self-organized network (SON)
• Relay technologies
• Interference management
• Networks convergence
Research Outcomes (2004-2010)
140+ technical patents, 70+ standard proposals
6 books, 140+ research articles
IEEE Xplore Top 100 Downloads (03/2010)
• This ranking list covers all
R&D areas in Electronics
and Electrical Engineering
• 36. Carrier aggregation for LTE-advanced mobile communication systems
• 60. Self-configuration and self-optimization for LTE networks
• 97. Relay technologies for WiMax and LTE-advanced mobile systems
Standard Proposals on CR Technology
• Accepted by National ITU Standardization
Promotion Group
• Cognitive spectrum hole definition
• Cognitive Pilot Channel (CPC) definition and
function
• Centralized decision making
• Cognitive MAC spectrum sensing
• Cognitive directional transmission for vertical
coexistence
• The last four proposals have been accepted by ITU
(Geneva, 11-21 May 2010), ITU WP5A [LMS.CRS].
Standard Proposals on SON Technology
• Accepted by National IMT-Advanced/LTE-
Advanced Standardization Promotion Group
• Issue on PRACH load congestion
• Consideration of Cell type in MRO
• Distinguish the cause of RLF
• HO Configuration Negotiation
• Consideration on Unnecessary HO
• Issues on Mobility Change Request Procedure
• The Negotiation of Cell Reselection Parameters
in MLB
Standard Proposals on Relay Technology
• L1 Relay Backward Compatibility Analysis (3GPP TSG RAN)
• Downlink and Uplink Timing Synchronization for TDD Relays
(3GPP TSG RAN)
• Performance for Demodulate and Forward (DmF) Relays
• Analysis of Transmission Delay in Relay-enhanced Systems
• Distributed Link Adaptation for Relay-enhanced Systems
• On Link Adaptation for TDD Type II Relay-enhanced Systems
• Association of UE in Type II Relay-enhanced Systems
• Downlink Power Control for Mobile Relay
• Power Control for TDD Uplink
• Mode Management for Mobile Relays
• Downlink Flow Control for Un Interface
• Handover Optimization for Relay-enhanced Systems
• HARQ Timing for TDD Relays
International R&D Collaborations
WiCO-Nokia P1, 2004
WiCO-Ericsson, 2004
WiCO-Siemens, 2005
WiCO-CEA-LETI, 2005
WiCO-France Telecom, 2005
WiCO-Mobile VCE, 2005
WiCO-Prompt, 2006
WiCO-Nokia P2, 2007
WiCO-CSIRO, 2009
WiCO-Nokia P3, 2010
…
SWAN: Shanghai Wireless Advanced Network
International and National R&D Activities towards New-Generation Mobile Communication Networks
R&D of
3G and
future
mobile
systems
in China
ITU-R time schedule for
developing air-interface
technologies for IMT-A
2008 2009 20112010
R&D Air-Interface for IMT-A
Proposals
Technology Evaluation,
Result Analysis
Decision
Air-Interface
Standard
10/2010
02/2011
10/2009
New Generation Mobile
Wireless Broadband
Communication Networks
FuTURE
R&D of
Key
Technolog
y
System
Integration,
Demonstration
Pre-Commercial Trials and
Industrialization
2001 2003 2005 20102008
Standardization
2020
RDI of TD-SCDMA Systems
FuTURE +
Technical Requirements
• Wireless data rate: 1 Gbps (static) and 100 Mbps
(mobile)
• Spectrum efficiency: 5-10 bps/Hz (D-link), 2.5-7
bps/Hz (U-link)
• Frequency bands: 450-470MHz, 698-790MHz, 2.3-
2.4GHz, 3.4-3.6GHz
• Transmission bandwidth: 20/40/100 MHz
• MIMO support: 4x6MIMO
• Wireless channel models: Rice, Rayleigh,
Nakagami, GSM, DCS, IS-54, IS-95, 3GPP/3GPP2
SCM, SUI, WINNER, etc.
• Application protocols: HTTP, SSL, FTP, Telnet,
POP3, SMTP, RTSP, RTP, etc.
Aim and Objectives
To save your R&D time by 30%-50%
SWAN: Shanghai Wireless Advanced Network
Requirements
Analysis
Air interface
Technologies
Network
Technologies
System
Prototypes
Validation
and Demos
Software
Simulation
Integrated
Testing Platform
SWAN: A Testbed for IMT-Advanced Technologies
Services and
Applications
Ind
oo
r Testin
g
Pla
tform
Ou
tdo
or M
ob
ile
En
viro
nm
ent
ScramblingAfter FEC Enc Modulation DFT RE mapping SC-FDMATo analog
processing
After FEC Enc Scrambling Spreading Modulation
ZC
generation
PUSCH RS
PRACH
PUCCH RS
SRS
Bits from higher layer
图1 UL 传输链示图
After analog
processingAnt#1
Ant#2
Remove
CPFFT Deframing
RE
demapping
MIMO
equalization
TxD
equalization
After analog
processingRemove
CPFFT Deframing
RE
demapping
Channel
estimation
Layer
demmapingDemodulation Descrambling
Layer
demmapingDemodulation Descrambling
Layer
demmapingDemodulation Descrambling
Layer
demmapingDemodulation Descrambling
Layer
demmapingDemodulation Descrambling
PDSCH #1 To FEC Dec
PDSCH #2
PUSCH data
PUCCH dataBits from higher layer
PCFICH
PHICH
PDCCH
图2 DL 传输链示图
To FEC Dec
To FEC Dec
To FEC Dec
To FEC Dec
Software Simulation Platform
• 3GPP LTE R8
uplink and
downlink channels
implementation
• Parallel computing
facility at Shanghai
Supercomputer
Center (25K cores)
• Multi-cell multi-
user scenarios
(system-level
simulation)
System Level Simulation
• Coordinated Multi-Point (CoMP)
• Enhanced Inter-Cell Interference Coordination (eICIC)
• MU-MIMO technology
Indoor Testing Platform
• A VISA-based open, shared and flexible
testing environment
System
Under
Test
(SUT)
Software &
Hardware
Equipments
Control
& Demo
Platform
Indoor Testing Platform
Floor plan: ~300m2
20A1
A5 A6
D3
C1 C4C3C2 C5 D4
A9A7 A10A8
A1机柜:600X600X1100
可移动
B1 机柜:600X900X1800
可移动
C1 机柜:600X1200X2400
D1 工作台:1200X2400X800
立柱:800X800X2700
基带测试试验区射频和空口测试试验区
系统测试试验区
图展区 图展区室内试验区
系统演示区
D1 D2
B2B1A3
A4A2
业务测试和演示工作区被测设备总调试验区
电
视
幕
墙
系统演示测试控制台
用户体验区
玻璃移门 玻璃移门
RF SUTApplic
ations
Control
Users
Baseband Network Demo
Outdoor Mobile Environment
• Support multiple freq bands & transmission bandwidths
• Support urban, suburban, rural, and
highway communication scenarios
• Support both TDD and FDD systems
• Support relay and other technologies
• Support distributed radio networks
Phase
I
Phase
II
Application Demonstration Platform
• Broadband
multimedia traffic
from the Internet,
digital TV programs,
and telecom
networks
• High data-rate and
very bursty traffic to
demonstrate the
capabilities of IMT-
Advanced
technologies
室内演示
标清电视源
上海工程技术大学外场2
古北小区外场1
上海文广
FTP服务器流媒体服务器 Web服务器
IPV4
IPV6
高清电视源
上海电信武宁路ASON
CUC
上海交大
Internet
CERNET1CERNET2
3TNet
CU2CU1
上海宽带中心机房
室外演示
临空经济园外场3
CU3
上海临空经济园区机房
RAURAU
RAU
FTP服务器流媒体服务器 Web服务器
Application Demonstration Platform
千兆交换
演示笔记本
G比特业务承载演示---中心演示室
可视电话
可视电话
接入路由器
真实视频业务源(3TNet提供)
中心演示业务源
IPTV机顶盒
FTP 服务器
流媒体服务器
电视墙大屏幕演示系统
视频会议
视频会议
VOD
机顶盒
测试平台演示---中心演示室
综合业务传输
性能测试
外场环境小区
规划
宽带无线组网
性能测试
宽带无线传输
性能测试
演示视频流
数据流
移动场景---移动测试车
IPTV机顶盒
G比特传输
G比特G比特
WWW.SWAN.SH (coming soon)
Case Studies and Demos
Remote Cross-layer Testing
Internet /LAN
Remote User
Send Packets
Transmitter Receive Packets
Receiver
RF Monitering
RF Monitering
Wireless Router
Elektribit Propsim C8
NationalInstruments
PXIe-1065
SPIRENT Smartbits 600B
• Web-based remote
access and control
• Multiple radio
channel models
• Repeatable testing
• Cross-layer metrics
• L3: Throughput,
Delay, Packet-loss
• L1: Power spectrum
density, Symbol
Constellation
Remote Cross-layer Testing
TX RXChannel Emulator
EDA Simulation Platform
• Integrated hardware/software physical-layer testing and performance evaluation platform
Standardized Link-Level Development, Validation and Performance Evaluation
0 2 4 6 8 10 12 14 16 18 2010
-6
10-5
10-4
10-3
10-2
10-1
100
SNR(dB)
BE
R
AWGN PXI
EVA PXI
EVA Simulated
AWGN Simulated
• Frequency offset correction algorithms (UESTC)
• Cyclic delay diversity (CDD) in cyclostationary signatures (WiCO)
0
5
10
15
20
25
30
35-40
-30
-20
-10
0
10
2030
40
common
CP-induced
components
Am
plitu
de o
f CA
F
Lag p
aram
eter
Cycle frequency
distinguishable
CDD-induced
signature
Customized Algorithms Development, H/W Implementation and Evaluation
• Based on DLL files: TX.dll+C8 (Channel Emulator)+RX.dll
TX Side
RX Side
Algorithm Evaluation
Teminal
Base Station
Wirel
ess
Cha
nnel
Console
Gbps Wireless
Transmission
System
Control Stream
DownLink
Uplink
• A MIMO/OFDM-based Gbps wireless platform
• Iperf software for performance evaluation
• SmartBits 600B for traffic generation
Broadband Wireless Applications
• SWAN: an Open Wireless Testbed for the R&D of
IMT-Advanced Technologies
Conclusions
• SWAN: an Open Wireless Testbed for the R&D of
IMT-Advanced Technologies
Software simulation platform
Indoor testing platform
Outdoor mobile environment
Application demonstration platform
• WiCO is keen to promote international R&D
collaborations in future mobile communications
technologies, for knowledge creation,
technology transfer and standardization.
Dr. Yang Yang, [email protected]
Shanghai Research Center for Wireless Communications
Add: 6/F Information Building, 280 Linhong Road, Shanghai 200335, China
Tel: +86(21) 6128 0635
Fax: +86(21) 6128 0638
http://www.shrcwc.org