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Wireless Internet Wireless Internet 研究群研究群研究能量與研發成果研究能量與研發成果
Members and Research Members and Research DirectionsDirections
– Heterogeneous Wireless NetworksHeterogeneous Wireless Networks 林一平、曾建超、張明峰、曹孝櫟、陳耀宗林一平、曾建超、張明峰、曹孝櫟、陳耀宗
– B3G Core Network, IMSB3G Core Network, IMS 林一平、曹孝櫟林一平、曹孝櫟
– Wireless VoIP/multimedia ApplicationsWireless VoIP/multimedia Applications 林一平、張明峰、曹孝櫟、陳耀宗林一平、張明峰、曹孝櫟、陳耀宗
– Mobile Peer-to-Peer CommunicationsMobile Peer-to-Peer Communications 張明峰、曹孝櫟張明峰、曹孝櫟
– Inter Vehicle CommunicationsInter Vehicle Communications 王協源、曾建超王協源、曾建超
– Wireless Mesh NetworksWireless Mesh Networks 王協源、曹孝櫟王協源、曹孝櫟
研發成果研發成果
Design of Call Control and Authentication for UMTS
第三代行動通訊系統之通話控制與身份認證
IP Multimedia Subsystem
UMTS Core Network
GERAN, UTRAN
Application and Service Network
Application Layer
Radio Network Layer
Core Network Layer
Open Service Access
OSA-based PoC Client
Authentication
Analysis of AV Management
One-Pass Authentication Procedure
UMTS and WLAN Interworking
WLAN-based GPRS Support Node
Charging and Failure Recovery Issues in UMTS
• a broadcast approach that allows the MS to detect lost mobility management context in SGSN, and therefore speeds up the process for SGSN recovery.
• the network operator can select the appropriate parameter values in the broadcast approach.
signalingsignaling and data
f
a
MS
RA2
MS
RA2
Node B
Node B
RNC
UTRAN
c
d
e
SGSN
1OMC
CBC
2
2
3
3
45
SGSN: Serving GPRS Support Node MS: Mobile StationRNC: Radio Network Controller Node B: Base StationCBC: Cell Broadcast Center RA: Routing AreaUTRAN: UMTS Terrestrial Radio Access NetworkOMC: Operations and Maintenance Center
b
Fig. UMTS Broadcasting Architecture
Adaptive Scanning Algorithms for WLAN HaAdaptive Scanning Algorithms for WLAN Handoffsndoffs
無線區域網路換手之適應性頻道掃描演算法 Problem Definition• Considering user-defined delay constraints for real-time applications, combine active and pass
ive to reduce the latency. Proposed Solution• Optimal Solution: O(2NUMch * Nbeacons
2) • Heuristic Solution - Fewest APs First Algorithm: O(Nbeacons
2)
Get Environment InformationGet Environment Information
Optimal Solution: Find All PossibleOptimal Solution: Find All PossibleSolutions Using Dynamic ProgrammingSolutions Using Dynamic Programming
DualMAC: A Soft Handoff Mechanism for ReDualMAC: A Soft Handoff Mechanism for Real-Time communications in secured WLANsal-Time communications in secured WLANs
Handoff steps and their latency in RSN WLANs
Proposed DualMAC method:Proposed DualMAC method:• Connect to serving and target AP using different MAC addresses• Time division duplex access with channel switching• Enter PSM to avoid packet loss of serving traffic
Design Guidelines:Design Guidelines:•Seamless handoff for real-time communications (<50ms handoff delay)•RSN WLAN (802.1x/802.11i on)•Pure STA-side approach
Energy-efficient Packet Scheduling Algorithm Energy-efficient Packet Scheduling Algorithm for Real-time Communications over for Real-time Communications over Broadband Wireless Access SystemsBroadband Wireless Access Systems
• minimizing energy consumption without violating QoS requirements
– Periodic On-Off scheduling scheme (PS)
– Aperiodic On-Off scheduling scheme (AS)
Connection #1
Connection #2
Connection #3
MS
Sleep
Connection #1
Connection #2
Connection #3
Connection #1
Connection #2
Connection #3
MSMS
SleepSleep
DL/UL burst OFDM frame
listen sleep listen sleep
DL/UL burst OFDM frame
listen sleep listen sleep
Periodic On-Off scheduling scheme (PS)
Aperiodic On-Off scheduling scheme (AS)
MSS#1Connection#1
5 1 4 2 3
1 2 3 6 4 5
MSS#2Connection#1
MSS#2Connection#2
BS frames
scheduling prioritiesfor jth packet
jth packet
delay constraint (5 frames)
frame-fully-used
packets arrival
MSS#1Connection#1
5 1 4 2 35 1 4 2 3
1 2 3 6 4 51 2 3 6 4 5
MSS#2Connection#1
MSS#2Connection#2
BS frames
scheduling prioritiesfor jth packet
jth packet
delay constraint (5 frames)
frame-fully-used
packets arrival
Adaptive Attenuation Factor Model for Adaptive Attenuation Factor Model for Localization in Wireless Sensor Localization in Wireless Sensor
NetworksNetworks• Adopting a centralized architecture to localize sensor nodes Adopting a centralized architecture to localize sensor nodes
• Dynamically measuring n and X locally to increase the accuracy of localization Dynamically measuring n and X locally to increase the accuracy of localization
UN: Unknown Node
IRN: Initial Reference Node
Fusion Center
Wireless Communication
1. Neighbor-Probe Request
3. Neighbor-Signals Response
2. Signal StrengthB
C
A
D
E
F
G
H
I
J
K
An Integrated Call Agent of the Converged VoIP Network
ITRI MGCP protocol Stack
RGW
TelephoneMicrosoftNetMeeting
NCTU SIP Proxy
ITRISIP-UA
OpenH323
ITRISIP Protocol Stack
OpengateGatekeeper
NCTUICA
or OpenPhone
ITRI MGCP protocol Stack
RGW
TelephoneMicrosoftNetMeeting
NCTU SIP Proxy
ITRISIP-UA
OpenH323
ITRISIP Protocol Stack
OpengateGatekeeper
NCTUICA
or OpenPhone
ITRI MGCP protocol Stack
RGW
TelephoneMicrosoftNetMeeting
NCTU SIP Proxy
ITRISIP-UA
OpenH323
ITRISIP Protocol Stack
OpengateGatekeeper
NCTUICA
or OpenPhone
ITRI MGCP protocol Stack
RGW
TelephoneMicrosoftNetMeeting
NCTU SIP Proxy
ITRISIP-UA
OpenH323
ITRISIP Protocol Stack
OpengateGatekeeper
NCTUICA
or OpenPhone
NCTUICA
or OpenPhone
•Using IN basic call state model (BCSM)• Unified event trigger• Mapping VoIP message to BCSM •Supports:
• H.323, SIP, MGCP, H.248 • Inter domain interworking
Components in our ICA
ICAICAh323h323
mgcpmgcp siplibsiplib
megacomegaco
GK CA
SIPProxy/Registrar
MGC
User User User User
Network
Globaluser
Globaluser
Protocol dispatcherProtocol dispatcher
CalltableCalltable
Call controldispatcher
Call controldispatcher
O T O T O T O T
ICAICAh323h323
mgcpmgcp siplibsiplib
megacomegaco
GK CA
SIPProxy/Registrar
MGC
User User User User
h323h323
mgcpmgcp siplibsiplib
megacomegaco
GK CA
SIPProxy/Registrar
MGC
h323h323
mgcpmgcp siplibsiplib
megacomegaco
GK CA
SIPProxy/Registrar
MGC
User User User User
Network
Globaluser
Globaluser
Protocol dispatcherProtocol dispatcherProtocol dispatcherProtocol dispatcher
CalltableCalltable
Call controldispatcher
Call controldispatcher
CalltableCalltable
Call controldispatcher
Call controldispatcherCall controldispatcher
Call controldispatcher
O T O T O T O TO T O T O T O T
ICA functional blocks
Major ProjectsMajor Projects
後卓越計畫 後卓越計畫 (Program for Promoting Academic Excellence of Universit(Program for Promoting Academic Excellence of Universities II), NSC: "Advanced Technologies and Applications for Next Generies II), NSC: "Advanced Technologies and Applications for Next Generation Information Networks,"ation Information Networks,"下一世代資訊通訊網路尖端技術與應用下一世代資訊通訊網路尖端技術與應用 , 2004.04 - 2008.03 , 2004.04 - 2008.03
電信國家型計畫:電信國家型計畫: SIP-based B3GSIP-based B3G 整合實驗計畫 整合實驗計畫 (I, II, III) , 2003.01-2006.(I, II, III) , 2003.01-2006.12 12
工研院工研院 // 學研計畫學研計畫 : B3G: B3G 網路上之服務開發網路上之服務開發 , 2005.01 - 2005.12 , 2005.01 - 2005.12
國科會台灣法國雙邊合作計畫:國科會台灣法國雙邊合作計畫: B3GB3G 網路中網路中 OSAOSA 及及 IMSIMS 互通效能研究 互通效能研究
設計一個適用於車間通訊網路的繞徑通訊協定設計一個適用於車間通訊網路的繞徑通訊協定(( 國科會國科會 , 2004 ~ 2005,, 2004 ~ 2005, 王協源王協源 ) )
Major ProjectsMajor Projects
適用於 適用於 Wireless Mesh Network Wireless Mesh Network 繞徑通訊協定及維運系統的設計實作繞徑通訊協定及維運系統的設計實作與效能量測與效能量測(( 國科會國科會 , 2005 ~ 2007,, 2005 ~ 2007, 王協源王協源 ) )
A Study on Peer-to-Peer Real-Time Services in Mobile Internet EnvirA Study on Peer-to-Peer Real-Time Services in Mobile Internet Environment onment (( 行動網際網路上之點對點即時通訊行動網際網路上之點對點即時通訊 ),), 國科會國科會 , 94.08.01-96.07.31 , 94.08.01-96.07.31
Joint Power Saving Mechanisms for Heterogeneous Wireless NetwJoint Power Saving Mechanisms for Heterogeneous Wireless Networksorks(( 異質無線網路之協力省電技術異質無線網路之協力省電技術 ), ), 國科會國科會 , 94.08.01-96.07.31 , 94.08.01-96.07.31
Seamless Handover Technologies for Cellular/WLAN InterworkingSeamless Handover Technologies for Cellular/WLAN Interworking(( 雙網之平順換手技術雙網之平順換手技術 ), ), 交大工研院聯合研究中心交大工研院聯合研究中心 , 94.01.01-94.12.31 , 94.01.01-94.12.31
Low Power and Fast Handoff Technologies for VoWLAN Low Power and Fast Handoff Technologies for VoWLAN (( 網際網路之低耗電與快速換手技術網際網路之低耗電與快速換手技術 ), ), 交大聯發科聯合研究中心交大聯發科聯合研究中心 , 94.08., 94.08.01-95.07.31 01-95.07.31
Major ProjectsMajor Projects
Design and Evaluation of IEEE 802.16e MACDesign and Evaluation of IEEE 802.16e MAC(802.16/WiMAX(802.16/WiMAX 之媒體存取層設計與評估之媒體存取層設計與評估 ), ), 中山科學研究院中山科學研究院 , , 94.01.01-95.12.31 94.01.01-95.12.31
Excellence Project: Next Generation Information CommunicExcellence Project: Next Generation Information Communications Networksations Networks(( 後卓越計劃, 國科會, 後卓越計劃, 國科會, 2004~2008) 2004~2008) – Network Security Network Security
支援下一代無線與 支援下一代無線與 FTTx FTTx 擷取之光纖都會網路技術擷取之光纖都會網路技術 (( 國科會,國科會,2003~2006) 2003~2006) – 快速行動擷取網路中之品質服務支援 快速行動擷取網路中之品質服務支援
校園校園 IPv6 SIP VoIP IPv6 SIP VoIP 之建置推廣 之建置推廣 (TWNIC (TWNIC ,, 2004, 2005)2004, 2005)
Prof. Yi-Bing Lin Prof. Yi-Bing Lin (( 林一平教授林一平教授 ))
學術榮譽學術榮譽 ACM FellowACM Fellow 、、 IEEE FellowIEEE Fellow 、、 AAAS FelAAAS Fel
lowlow 、、 IEE FellowIEE Fellow 國立交通大學講座教授國立交通大學講座教授 國立交通大學傑出教學獎國立交通大學傑出教學獎 國科會傑出研究獎國科會傑出研究獎 (86(86 ,, 8888 ,, 8989 年度年度 )) 李國鼎穿石獎李國鼎穿石獎 潘文淵研究傑出獎潘文淵研究傑出獎論文專書發表論文專書發表 國際期刊國際期刊 : 200: 200 篇篇 (( 請參考請參考 http://liny.csie.nctu.edu.tw/)http://liny.csie.nctu.edu.tw/) 專書專書 : 3: 3 本本 EmailEmail: [email protected]: [email protected]
主要學歷主要學歷 美國,西雅圖 計算機工程 博士美國,西雅圖 計算機工程 博士 (1985.0(1985.0
9-1990.08)9-1990.08) 國立成功大學 電機工程 學士 國立成功大學 電機工程 學士 (19(19
79.09-1983.05)79.09-1983.05)
主要經歷主要經歷 國立交通大學 研發長國立交通大學 研發長 國立交通大學資訊工程學系 主任國立交通大學資訊工程學系 主任 (1997.(1997.
08-1999.07)08-1999.07) 國立交通大學電子資訊中心 副主任國立交通大學電子資訊中心 副主任 (199(199
6.08-1997.01)6.08-1997.01) 國立交通大學資訊工程學系 教授國立交通大學資訊工程學系 教授 (1995-(1995-
現今現今 )) Bell Communication ResearchBell Communication Research 個人通個人通
訊研究部門 研究員訊研究部門 研究員 (1990.08-1995.08)(1990.08-1995.08)
Prof. Ming-Feng Chang Prof. Ming-Feng Chang (( 張明峰教授張明峰教授 ))
Research InterestsResearch Interests– Wireless VoIPWireless VoIP– Mobile PaymentMobile Payment
Wireless Internet ApplicationsWireless Internet Applications– P2P streamingP2P streaming
PublicationsPublications Journal Papers : 21Journal Papers : 21 Conference Papers : 22Conference Papers : 22 Book Chapters : 1Book Chapters : 1 Patents : 2Patents : 2
– B.S. and M.S. in EE, National B.S. and M.S. in EE, National Taiwan University, 1982, 1984Taiwan University, 1982, 1984
– Ph.D. in CS, University of Illinois at Ph.D. in CS, University of Illinois at Urbana-Champaign, 1991Urbana-Champaign, 1991
– Associate Professor (NCTU), 1991 Associate Professor (NCTU), 1991
– Professor (NCTU), 2002 - Professor (NCTU), 2002 -
– Chairman, Dept. of CSIE, NCTU, Chairman, Dept. of CSIE, NCTU, 2003-20042003-2004
– Best Paper Award, NCS, 2001Best Paper Award, NCS, 2001
– Excellent Teaching Award: NCTU, Excellent Teaching Award: NCTU, 20022002
– Best Paper Award, the 10th Best Paper Award, the 10th Mobile Computing Workshop, Mobile Computing Workshop, 20042004
Prof. Yaw-Chung Chen Prof. Yaw-Chung Chen (( 陳耀宗教授陳耀宗教授 ))
Areas of research interestsAreas of research interests Design and implementation of high peDesign and implementation of high pe
rformance gateways rformance gateways P2P Routing/filteringP2P Routing/filtering Home Multimedia StreamingHome Multimedia Streaming Mobility SupportMobility Support
TCP TCP WLAN QoS design and MAC ImplementWLAN QoS design and MAC Implement
ationation Home networkingHome networking
PublicationsPublications International journal: 35International journal: 35 International conference: 45International conference: 45 Patents: 1Patents: 1
BSEE, NCTU, 1973BSEE, NCTU, 1973 Ph.D., Nothwestern Univ., 1987Ph.D., Nothwestern Univ., 1987 Member Technical Staff,Member Technical Staff,
Exploratory Department, Bell Labs, 198Exploratory Department, Bell Labs, 1987~20007~2000
Professor, NCTU-CS, 2000~Professor, NCTU-CS, 2000~ Director, Computer and Network Center, Director, Computer and Network Center,
NCTU, 2001~NCTU, 2001~
Prof. Shie-Yuan Wang Prof. Shie-Yuan Wang (( 王協源教授王協源教授 ))
Research InterestsResearch Interests– Wireless NetworkWireless Network
Mobile ad hoc networkMobile ad hoc network Wireless LAN and mesh networksWireless LAN and mesh networks WiMax and WLAN integrated networksWiMax and WLAN integrated networks
– Network Simulation and EmulationNetwork Simulation and Emulation– Internet TechnologyInternet Technology– Network System Design and ImplemeNetwork System Design and Impleme
ntationntation PublicationsPublications
Journal Papers : 13Journal Papers : 13 Conference Papers : 15Conference Papers : 15 Book Chapters : 1Book Chapters : 1 Patents : 1Patents : 1
– Ph.D. (Harvard University), 1999Ph.D. (Harvard University), 1999– Associate Professor (NCTU), 2003– preAssociate Professor (NCTU), 2003– pre
sentsent– Assistant Professor (NCTU), 2000-2003 Assistant Professor (NCTU), 2000-2003 – Founder and director of NCTU “NetwFounder and director of NCTU “Netw
ork and System Laboratory,” 2000 –ork and System Laboratory,” 2000 –– Vice director of NCTU EE college and CVice director of NCTU EE college and C
S college’s Honors Undergraduate PS college’s Honors Undergraduate Program, 2005 –rogram, 2005 –
– Author of NCTUns Network Simulator Author of NCTUns Network Simulator and Emulator (As of 11/24/2005, more and Emulator (As of 11/24/2005, more than 4,500 people from 95 countries hthan 4,500 people from 95 countries have registered and download this tooave registered and download this tool) l)
Prof. Shiao-Li TsaoProf. Shiao-Li Tsao( ( 曹孝櫟教授曹孝櫟教授 ))
Research InterestsResearch Interests– Mobile Internet TechnologiesMobile Internet Technologies– Broadband Wireless Access Broadband Wireless Access
Software and SystemsSoftware and Systems– Embedded Software and SystemEmbedded Software and System– Real-time Communications and Real-time Communications and
Multimedia ApplicationsMultimedia Applications PublicationsPublications
Journal Papers : 12Journal Papers : 12 Conference Papers : 34Conference Papers : 34 Book Chapters : 3Book Chapters : 3 Patents : 13Patents : 13
– Ph.D. (National Cheng Kung UniversitPh.D. (National Cheng Kung University), 1999y), 1999
– Assistant Professor (NCTU), 2004- Assistant Professor (NCTU), 2004- – Section Manager and Researcher (ITSection Manager and Researcher (IT
RI), 1999-2004RI), 1999-2004– Visiting Scholar (Bell Lab, Lucent), 19Visiting Scholar (Bell Lab, Lucent), 19
9898– Research Achievement Awards of ITRResearch Achievement Awards of ITR
I in 2000 and 2004I in 2000 and 2004– Outstanding Project Award of MinistrOutstanding Project Award of Ministr
y of Economic Affairs (MOEA) of R.O.C.y of Economic Affairs (MOEA) of R.O.C. in 2003 in 2003
– Advanced Technologies Award of MOAdvanced Technologies Award of MOEA of R.O.C. in 2003EA of R.O.C. in 2003
– Research Paper Award of ITRI in 2002.Research Paper Award of ITRI in 2002.
– Member of IEEE and IEEE ComSoc. Member of IEEE and IEEE ComSoc.
Prof. Chien-Chao Tseng Prof. Chien-Chao Tseng (( 曾建超教授曾建超教授 ))
Research Interests:Wireless Internet Infrastructure and Protcols, Wireless Internet Applications
Topics:Integration of Wirelsss Networks:
- 3G, GPRS, Wireless LAN, Bluetooth, PAN- Mobile IP, NAT, VPN, MPLS- Mobile Router and Proxy, Ad Hoc Networks- Fast Handover (802.11i)
Seamless Handover for Wireless Internet - Drivers, Network Layer, Transport Layer, Application Layer- SIP Mobility, 802.11x, Authentications (802.1x, 802.11i)
Wireless Internet Applications: -Mobile e-learning Platform, ITS Platform, Location-aware Applications
-August 1989 - August 1996Associate Professor, Department of Computer Science and Information Engineering, National Chiao Tung University.
-August 1996 – NowProfessor, Department of Computer Science and Information Engineering, National Chiao Tung University.