First Week Agenda First Week Agenda 無線網 路 多媒體系統 � Course Preview Wireless Multimedia System � Wireless Multimedia/Mobile Computing / Pervasive Computing � Wireless Mobile Communications � System Review and Fundamental Problems � Next Week Dr. Eric Hsiaokuag Wu http://wmlab.csie.ncu.edu.tw/course/wms 2006 Fall Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Course Contents Course Contents � Fundamental Wireless Technology Course Preview Course Preview • Propagation Model • Wireless Medium Access • Transport Solutions • Ad hoc Wireless System • Cellular System • Middleware Systems • Multimedia System � Advanced Wireless Technology • Multicasting What is Going to Happen What is Going to Happen • Heterogeneous System in the Course? in the Course? • Routing Algorithms • QoS/ Reliable Transmissions Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Roaming Across a variety of heterogeneous network and New Interests New Interests service environments Application � Provision of Sufficient Transmission Capacity for Broadband Mobile OS, MiddleWare Multimedia: A Step Toward 4G � Future Broadband Radio Access Systems for Integrated Services with RTP, TCP, UDP Flexible Resource Management RSVP Mobility Adaptive � QoS Support for an All-IP system Beyond 3G Unpredictable Algorithm IP, Mobile IP � Enhancing IP Service Provision over Heterogeneous Wireless channel Network Wireless Network Layer by QoS � Re-configurable Terminals: An Overview of Architectural Solutions by QoS Requirement Clustering(optional) Information Data Link MAC Radio ™ ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory
Ubiquitous Services Ubiquitous Services Adaptive Applications Adaptive Applications Varied type of service Video Audio Graph Text Adaptive application coding Quality High Low Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Expectation of the Class Expectation of the Class Aeronautical Communications Aeronautical Communications � Basic Understanding of PCS world � Being able to do the wireless research � Developing the capability to invent the key wireless applications Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Situation- -Aware Wireless Networks Aware Wireless Networks Network Mobility Management Situation Network Mobility Management ™ ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory
Ultra Ultra- -Wideband Radio Wideband Radio Course Process Course Process � Paper reading and your presentations � Wireless Multimedia Applications Exercises Broadband services: Cable, xDSL,Satelite, Terestrial Home Gatew ay Desktop computer Monitor Camcorder Printer DVD Laptop Digital computer TV Camera PDA Audio Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Mobile phone today = multipurpose terminal for ... Mobile Computing Mobile Computing Internet Browser Information Client E-mail Client E-purse Authentication Device Share dealing, etc. Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Reading list for This Lecture Mobile Computing Reading list for This Lecture Mobile Computing � Required Reading: (Cfox95) D. Cox,”Wireless Personal Communications: What is it?,”IEEE Personal Communication Magazine, (April 1995) pp.20-35 Verticals Horizontals Applications (S.2001) M. Satyanaraynan, “Pervasive Computing: Vision and Challenges”, IEEE Personal Communication Magazine, (August 2001), pp.10-17 (Bi2001) Qi Bi, George I. Zysman, and Hank Menkes, “Wireless Mobile Mobile Operating Systems Communications at the Start of the 21 Century”, IEEE Communication Operating Systems Magazine (January 2001), pp. 110-116 Further Reading Devices Notebooks PDAs Phones PIM (Bolcskei2001) H. Bolcskei, A. J. Paulrai, K. V. S. Hari, and R. U. Nabar, “Fixed Broadband Wireless Access: State of the Art, Challegnes, and Wireless Networks WANs LANs Future Directions”, IEEE Communication Magazine ™ ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory
Why should we care ? Why should we care ? Mobile Computing Mobile Computing � Reason # 1 : $$$ & jobs � information processing in general � Explosive growth of wireless voice, paging, and data services • not just communication or just computing, but both • 35-60 percent annual growth in the past decade � Any medium or combination of medium • mobile phones in US will be 42 % of fixed -line phones by 2000 • process not just telephone voice or just data, but multimedia • 700 million mobile users at the end of 2000 � Mobility • One billion expected by 2003 • components of the systems may be � Big demand for portable communicators and computers � moving, tether-less (wireless), portable • 2 M portable computer in 1988 to 74.1 M units in 1998 • uses of the system may be moving Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Growth in traffic in different access system Growth in traffic in different access system Is there a more “ Is there a more “academic academic” ” reason ? reason ? and voice and data services and voice and data services � Reason # 2: a next step in the evolution of information system � Evolution from personal computing to networked computing to mobile computing � Evolution from wired telephony to cordless telephony to mobile cellular telephony � At the same time, unification of computing and communication Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory ™ ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory Mobile Multimedia Systems Mobile Multimedia Systems Pervasive Computing Pervasive Computing � Ubiquitous information access (everybody else) � Technology that disappears • e.g. wireless computing, mobile computing, nomadic computing • The most profound technologies are those that disappear. They weave • information distributed everywhere by “the net” themselves into the fabric of everyday life until they are indistinguishable from it”. • users carry (wireless) terminals to access the information services � Ubiquitous (Invisible) Computing (Xerox PARC) • terminal is the universal service access device • Cheap computers of different scale and types embedded everywhere • terminals adapt to location and services • Potentially 100s of computers per room that disappear into background • Knowledge-based society (e.g. active badge, tabs, pads, live boards..) • User centric, not terminal centric � Flexible Users Choices • Computers swapped and shared among users • In terms of access, service, content � Effective Use of Smart Spaces • Any where, anytime, any terminal equipments � Invisibility � Wearable Computing terminal / Mobile Broadband services � Localized Scalability (MBS) � Masking Uneven Conditioning ™ ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory ™ Wireless & Multimedia Network Laboratory Wireless & Multimedia Network Laboratory
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