Wireless Internet 研究群研究能量與研發成果

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


RGW


NCTU SIP Proxy

ITRISIP-UA

OpenH323


OpengateGatekeeper

NCTUICA

or OpenPhone


RGW


NCTU SIP Proxy

ITRISIP-UA

OpenH323


OpengateGatekeeper

NCTUICA

or OpenPhone


RGW


NCTU SIP Proxy

ITRISIP-UA

OpenH323


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


O T O T O T O T

ICAICAh323h323


megacomegaco

GK CA

SIPProxy/Registrar

MGC

User User User User

h323h323


megacomegaco

GK CA

SIPProxy/Registrar

MGC

h323h323


megacomegaco

GK CA

SIPProxy/Registrar

MGC

User User User User

Network

Globaluser

Globaluser

Protocol dispatcherProtocol dispatcherProtocol dispatcherProtocol dispatcher

CalltableCalltable



CalltableCalltable


Call controldispatcherCall 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 ) )


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


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.

Documents

Wireless Internet 研究群 研究能量與研發成果

Wireless Internet 研究群研究能量與研發成果