swan: a wireless testbed for imt-advanced technologiessrif2012.inc.cuhk.edu.hk/slides/yang...
TRANSCRIPT
SWAN: a Wireless Testbed for
IMT-Advanced Technologies
Yang Yang
Shanghai Research Center for Wireless Communications
Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences
SRIF 2012, INC, CUHK, Hong Kong, 12-13 Jan 2012
Outline
• 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
Research Team
• 60+ employees
• 40+ PG students
• Visiting researchers
• Adjunct professors
Employee StructureOthers 9%
Bachelor
23%
Master 40%
PhD 28%
PhD Master Bachelor Others
Research Areas
Physical Layer
• Cognitive Radio and Dynamic Spectrum Access
• Interface management technologies
Wireless Testbed
• Simulation platform
• Indoor testing platform
• Outdoor environment
• Application demo system
Patents and Standard Proposals
R&D
Collaboration
Network Layer
• Relay technologies
• Self-organized Networks
• Networks convergence
Current Research Projects
56 projects in the
last two years
Total: RMB 83M+
research funding
Research Outcomes (2004-2011)
160+ technical patents, 90+ standard proposals
6 books, 160+ 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
Advanced Wireless Testbed: A Must
OFDM
MIMO
Smart Antenna
Cognitive Radio
Link Adaptation
Wireless Relay
Network Coding
IPv6
…
New
Technologies
New
Standards
Users
Operators
Manufacturers
Standards
…
New
Requirements
Indoor/Outdoor
Open, Flexible
Expendable,
Professional,
Multiple bands,
…
Testing and
Evaluation
New
Systems
New
Business
Models
New
Services
Funding and Partners
• Funding: RMB 33M from MIIT, RMB 30M from
Shanghai local government
• 4 Industrial Partners
• China Telecom, Huawei, ZTE, Datang Mobile
• 7 Academic Partners
• Southeast University, Tsinghua University,
Beijing University of Posts and Telecom
(BUPT), Huazhong University of Science and
Technology (HUST), Xian Jiaotong University
(XJTU), University of Electronic Science and
Technology of China (UESTC), and University
of Science and Technology of China (USTC).
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.
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
Aim and Objectives
To save your R&D time by 30%-50%
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/R10
uplink and
downlink channels
implementation
• Parallel computing
facility at Shanghai
Supercomputer
Center (25K cores)
• Multi-cell multi-
user scenarios
(system-level
simulation)
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 SUT Applic
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-1
• 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-2
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
• Software Defined Radio: programmable multi-mode, multi-band and/or multi-functional wireless devices
• Cognitive Radio: environment cognition, etc.
Battery Recovery Aware Sensor Networks
Cognitive Radio Hardware Platform-1
Battery Recovery Aware Sensor Networks
Cognitive Radio Hardware Platform-2
Battery Recovery Aware Sensor Networks
Cognitive Radio Hardware Platform-3
Environment cognition, upper layer stacks and SDRs are
implemented in the MCU (Nios® II processor).
General modules, such as FFT,
IFFT, MPSK, convolutional
encoder, Viterbi decoder and etc.,
are implemented in FPGA logics.
Wideband AD/DA boards
(150MSPS)
RF front end:
• IQ Modulator (TI: TRF3703-15)
• IQ Demodulator (TI: TRF3711-25)
• Frequency ranges from 700MHz
to 4GHz.
Case Studies and Demos
Parallel Computing Simulation
• Number of Subcarriers: 1024
• Number of Users: 4
• Length of CP: 144
• Modulation: QPSK
• Number of Cores: 64
Simulation Time:
115 hours 2.5 hours
System Level Simulation
• Coordinated Multi-Point (CoMP)
• Enhanced Inter-Cell Interference Coordination (eICIC)
• MU-MIMO technology
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
TX RX Channel 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-1
Algorithm Evaluation-2
• Based on MATLAB/C source files: Source file + C8 (Channel Emulator)+ Source file
4x4 MIMO-OFDM System
• PHY data rate: 1 Gbps
• 3 FPGA boards
• 4 AD/DA boards
• Baseband modules are hardware accelerated
• MAC and baseband mode selection are implemented in the NIOS core of the master board
Teminal
Base Station
Wirel
ess
Cha
nnel
Console
Gbps Wireless
Transmission
System
Control Stream
DownLink
Uplink
• A MIMO-OFDM Gbps wireless transmission system
• Iperf software for performance evaluation
• SmartBits 600B for traffic generation
Broadband Wireless Applications
WWW.SWAN.SH (coming soon)
• LTE Uplink: TX and RX
• WLAN 4x4: TX and RX
• RFID: TX and RX
Demos
• 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.
Professor 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