Wireless Internet 研究群 研究能量與研發成果

Members and Research Directions Heterogeneous Wireless Networks 林一平、曾建超、張明峰、曹孝櫟、陳耀宗 B3G Core Network, IMS 林一平、曹孝櫟 Wireless VoIP/multimedia Applications 林一平、張明峰、曹孝櫟、陳耀宗 Mobile Peer-to-Peer Communications 張明峰、曹孝櫟 Inter Vehicle Communications 王協源、曾建超 Wireless Mesh Networks 王協源、曹孝櫟

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 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. Fig. UMTS Broadcasting Architecture

Adaptive Scanning Algorithms for WLAN Handoffs 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 passive to reduce the latency. Proposed Solution Optimal Solution: O(2NUMch * Nbeacons2) Heuristic Solution - Fewest APs First Algorithm: O(Nbeacons2) Optimal Solution: Find All Possible Solutions Using Dynamic Programming Get Environment Information

Handoff steps and their latency in RSN WLANs DualMAC: A Soft Handoff Mechanism for Real-Time communications in secured WLANs Design Guidelines: Seamless handoff for real-time communications (<50ms handoff delay) RSN WLAN (802.1x/802.11i on) Pure STA-side approach 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 Handoff steps and their latency in RSN WLANs

Energy-efficient Packet Scheduling Algorithm for Real-time Communications over Broadband Wireless Access Systems Periodic On-Off scheduling scheme (PS) minimizing energy consumption without violating QoS requirements Periodic On-Off scheduling scheme (PS) Aperiodic On-Off scheduling scheme (AS) Aperiodic On-Off scheduling scheme (AS)

Adaptive Attenuation Factor Model for Localization in Wireless Sensor Networks Adopting a centralized architecture to localize sensor nodes Dynamically measuring n and X locally to increase the accuracy of localization

An Integrated Call Agent of the Converged VoIP Network 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 ICA functional blocks

Major Projects 後卓越計畫 (Program for Promoting Academic Excellence of Universities II), NSC: "Advanced Technologies and Applications for Next Generation Information Networks," 下一世代資訊通訊網路尖端技術與應用, 2004.04 - 2008.03 電信國家型計畫：SIP-based B3G整合實驗計畫 (I, II, III) , 2003.01-2006.12 工研院/學研計畫: B3G網路上之服務開發, 2005.01 - 2005.12 國科會台灣法國雙邊合作計畫：B3G網路中OSA及IMS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 (國科會, 2004 ~ 2005,王協源)

Major Projects 適用於 Wireless Mesh Network 繞徑通訊協定及維運系統的設計實作與效能量測 (國科會, 2005 ~ 2007,王協源) A Study on Peer-to-Peer Real-Time Services in Mobile Internet Environment (行動網際網路上之點對點即時通訊),國科會, 94.08.01-96.07.31 Joint Power Saving Mechanisms for Heterogeneous Wireless Networks (異質無線網路之協力省電技術), 國科會, 94.08.01-96.07.31 Seamless Handover Technologies for Cellular/WLAN Interworking (雙網之平順換手技術), 交大工研院聯合研究中心, 94.01.01-94.12.31 Low Power and Fast Handoff Technologies for VoWLAN (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, 94.08.01-95.07.31

Major Projects Design and Evaluation of IEEE 802.16e MAC (802.16/WiMAX之媒體存取層設計與評估), 中山科學研究院, 94.01.01-95.12.31 Excellence Project: Next Generation Information Communications Networks (後卓越計劃， 國科會， 2004~2008) Network Security 支援下一代無線與 FTTx 擷取之光纖都會網路技術(國科會，2003~2006) 快速行動擷取網路中之品質服務支援 校園IPv6 SIP VoIP 之建置推廣 (TWNIC ，2004, 2005)

Prof. Yi-Bing Lin (林一平教授) 主要學歷 美國，西雅圖 計算機工程 博士(1985.09-1990.08) 國立成功大學 電機工程 學士 (1979.09-1983.05) 主要經歷 國立交通大學 研發長 國立交通大學資訊工程學系 主任(1997.08-1999.07) 國立交通大學電子資訊中心 副主任(1996.08-1997.01) 國立交通大學資訊工程學系 教授(1995-現今) Bell Communication Research個人通訊研究部門 研究員(1990.08-1995.08) 學術榮譽 ACM Fellow、IEEE Fellow、AAAS Fellow、IEE Fellow 國立交通大學講座教授 國立交通大學傑出教學獎 國科會傑出研究獎(86，88，89年度) 李國鼎穿石獎 潘文淵研究傑出獎 論文專書發表 國際期刊: 200篇 (請參考http://liny.csie.nctu.edu.tw/) 專書: 3本 Email: liny@cs.nctu.edu.tw

Prof. Ming-Feng Chang (張明峰教授) B.S. and M.S. in EE, National Taiwan University, 1982, 1984 Ph.D. in CS, University of Illinois at Urbana-Champaign, 1991 Associate Professor (NCTU), 1991 Professor (NCTU), 2002 - Chairman, Dept. of CSIE, NCTU, 2003-2004 Best Paper Award, NCS, 2001 Excellent Teaching Award: NCTU, 2002 Best Paper Award, the 10th Mobile Computing Workshop, 2004 Research Interests Wireless VoIP Mobile Payment Wireless Internet Applications P2P streaming Publications Journal Papers : 21 Conference Papers : 22 Book Chapters : 1 Patents : 2

Prof. Yaw-Chung Chen (陳耀宗教授) Areas of research interests Design and implementation of high performance gateways P2P Routing/filtering Home Multimedia Streaming Mobility Support TCP WLAN QoS design and MAC Implementation Home networking Publications International journal: 35 International conference: 45 Patents: 1 BSEE, NCTU, 1973 Ph.D., Nothwestern Univ., 1987 Member Technical Staff, Exploratory Department, Bell Labs, 1987~2000 Professor, NCTU-CS, 2000~ Director, Computer and Network Center, NCTU, 2001~

Prof. Shie-Yuan Wang (王協源教授) Research Interests Wireless Network Mobile ad hoc network Wireless LAN and mesh networks WiMax and WLAN integrated networks Network Simulation and Emulation Internet Technology Network System Design and Implementation Publications Journal Papers : 13 Conference Papers : 15 Book Chapters : 1 Patents : 1 Ph.D. (Harvard University), 1999 Associate Professor (NCTU), 2003– present Assistant Professor (NCTU), 2000-2003 Founder and director of NCTU “Network and System Laboratory,” 2000 – Vice director of NCTU EE college and CS college’s Honors Undergraduate Program, 2005 – Author of NCTUns Network Simulator and Emulator (As of 11/24/2005, more than 4,500 people from 95 countries have registered and download this tool)

Prof. Shiao-Li Tsao ( 曹孝櫟教授) Ph.D. (National Cheng Kung University), 1999 Assistant Professor (NCTU), 2004- Section Manager and Researcher (ITRI), 1999-2004 Visiting Scholar (Bell Lab, Lucent), 1998 Research Achievement Awards of ITRI in 2000 and 2004 Outstanding Project Award of Ministry of Economic Affairs (MOEA) of R.O.C. in 2003 Advanced Technologies Award of MOEA of R.O.C. in 2003 Research Paper Award of ITRI in 2002. Member of IEEE and IEEE ComSoc. Research Interests Mobile Internet Technologies Broadband Wireless Access Software and Systems Embedded Software and System Real-time Communications and Multimedia Applications Publications Journal Papers : 12 Conference Papers : 34 Book Chapters : 3 Patents : 13

Prof. Chien-Chao Tseng (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 1996 Associate Professor, Department of Computer Science and Information Engineering, National Chiao Tung University. -August 1996 – Now Professor, Department of Computer Science and Information Engineering, National Chiao Tung University.