November 2002 University of Tsukuba KDDI Cooperating organizations: CDI, UCLA, Sun-Micro Systems

1. Interactive Multimedia Education at Distance on the Wideband InterNetworking using Internet SatelliteeLearning in Asia based on Instruction Design technology---University of Tsukuba, MMU, and AIT ---- November 2002 University of Tsukuba KDDI Cooperating organizations: CDI, UCLA, Sun-Micro Systems

2. Preceding work E-learning alliance University of Aizu University of Tsukuba Multimedia University Beijing University Asian Institute of Technology UCLA Shizuoka Industrial University

3. Role of Instructional Designer Based on results of analysis of information acquired, scenario of contents construction is developed and handed to Contents Creator Analysis Instructional Designer Contents Creator End User Educational psychology Educational cognitive science Educational technology

4. Goal of eLearning Project Web Creator Educator Instructional Design/Manager/Producer eLearning Contents Professors Maintenance Manager Goal: Obtain the experiences of Instructional/Maintenance Manegements

5. Outline of Pilot Experiment / Contribution to Society • Outline of experiment • Implementation of multi-site experiment system to simulate WINDS • Dynamic bandwidth sharing with MF-TDMA • Mesh topology network • Development of e-learning platform and interactive multimedia contents • e-learning experiment among universities in Asia • Contribution to Society • severe shortage of teachers and digital divide in Asia • demand for economical education environment • enhancement of high grade human resources in Asia High expectations to WINDS

6. Framework of Cooperation • To Develop of ID based e-learning contents • To carry out distance learning • To evaluate user demand on WINDS • University of Tsukuba, University of • Aizu, UCLA, AIT, MMU, and other universities in Japan • To implement e-learning platform for distance education. • To evaluate application technologies on WINDS • KDDI • To evaluate basic communication technologies to be implemented on WINDS • NASDA

7. Schedule FY2002 FY2003 FY2004 FY2005 Experiment system Launching of WINDS Implementation of pilot experiment system Development of utilization experiment system / applications Development of pilot experiment applications Consideration for the development of applications for utilization experiment Contents of distance learning Development of e-learning platform and contents Experiment of distance learning Experiment by on the pilot experiment platform Experiment on WINDS

8. R&D factors in the area of experiment Development of the Experiment system • demand from advanced distance learning to the system • difference between education materials in the multi-site environment • fluctuation of required communication resources • various demands of QoS (delay, discarded rate etc.) • multi-point simultaneous participating distance education at laboratory working/practical working • dispersion of lectures/education materials • construction of economically high efficient system (bandwidth sharing) Difficult to implement on the conventional point-to-point and/or star-type network Experiment of distance education: promotion in Asia • establishment of the instructional design technology in mesh-type topology / satellite network with bandwidth sharing • efficient distribution of contents independent of particular model • enrichment of software in the educational environment in Asia Verification and valuation of trend of the demand with WINDS

9. Feature of the experiment system (1) • Satellite network system Experiment in the environment simulating WINDS network is necessary for the early launch of applications suitable for WINDS • Implementation of mesh-type topology network • capability of flexible configuration in accordance with type of application • Dynamic resource management with MF-TDMA • incrementation of transmission rate in need of broadband communication • efficient use of resources due to bandwidth sharing • Implementation of QOS guaranty First-ever simultaneous practice in Japan

10. SKYCAST Lesson Feature of the experimental system (2) • e-learning platform • pilot experiment system • Skycast-Lesson: Video conference software on Windows PC equipped with MPED4 soft encoder • star-type application upgrading to mesh-type in future Verification and evaluation of application technology toward WINDS • utilization experiment system • mesh-type topology : both network and applications • multi-site multimedia distance education system ↑ capability of dispersing lecture contents and lecturers

11. Construction of Pilot Experimental System SKYCAST Lesson Capable of multi-site e-learning / TV conference with applications on PCs Efficient use of bandwidth resources due to the management by MF-TDMA Committed Information Rate (CIR) = 1Mbps Maximum Burst Rate (MBR) = 2Mbps MBR = 1 Mbps 1.8m VSAT AIT MMU 5.5m Hub station antenna ODU / IDU ODU / IDU E-learning devices E-learning devices router router RF equipment Access line Satellite modem student server / student client student server / student client Network Control Center (NCC)　（ＫＤＤＩ） router Ｅ-learning devices Satellite hub station router Internet transfer server Management server Delivery server management/lecturer client University of Tsukuba

12. Mesh-Type Topology Star-type topology Mesh-type topology Lecturer server material（１） lecturer material（２） • Concentrated allocation of lecturers/materials • Unsymmetrical network in usual • Multicast goes via hub station • Easily to distribute lecturers/materials • Indifference between hub station and branches • Easily to multicast from all the stations • ⇒enabling joint development of materials • and being a lecturer from both Japan and • overseas

13. MF-TDMA Method 1Mbps 512kbps 2.0Mbps 1.5Mbps 512kbps 512kbps • Efficient use by bandwidth sharing • Necessary band to secure CIR=512kbps with VSAT 10 stations, and MBR= 1 Mbps • Point-to-point type • 1.024Mbps×10stations≒10Mbps • Bandwidth sharing type （minimum ） • 512kbps X 10stations+512kbps  5.5Mbps 1.0Mbps 1.0Mbps 1.0Mbps Satellite capacity CIR for Station A CIR for Station C Bandwidth on Demand CIR for Station B Efficient use of bandwidth with above function is mandatory when the number of stations increases as to practical use B C A Image if bandwidth guarantee

14. Linkage to the satellite development • Future e-learning • use of various materials simultaneously • various QoS requirement • flexible allocation of materials and lecturers • Low cost implementation • easy system development, • however, not to meet requirements of e-learning • rapid increment of cost along with • increment of stations after practical use To satisfy requirements of e-learning △ 〇 × • partly satisfy requirements of e-learning • convenient for application development of full system • easily to respond to the increment of hub station due to practical use • Conventional satellite communication system • point-to-point communication (or combination of them) • Or • star-type topology • Or • frequent use of double hop communication • Utilization experiment system on WINDS • full mesh-type system • distinction of double hop communication • by on-board switch → reduce the time delay • broadband communication • Pilot experiment system • bandwidth sharing by multi-site connection • mesh-type topology • however recycle of applications • developed for star-type network • synchronization technology for the simultaneous transmission from multiple sites • bandwidth allocation technology for the simultaneous transmission of various media from multiple media Practical use would be delayed in case of development commenced after the launch of WINDS ×

15. Multi-point e-learning distance education experiment on satellite network • A) Effect of “on-site training” in combination with lecture learning and e-learning (Web Based Training) • Due to (simulative) ”on-site training” by web technology, the ratio of “remaining in one’s memory” increases from 5% to 70%. • B) Application to distance education • provide valuable lectures for many student at distance and grasp their understanding at the same time • international class, distance education for under-populated area where lecturers are deficient, etc. • C) Efficiency of satellite network as a practical environment • Implementation of international multipoint lecture/meeting/exchange in high efficiency • multi-cast distribution of e-learning contents

16. Experimental system（distance learning and learning management with WebCT） Actual scene of distance learning Screen of materials Automatic marking system Progress of learning

17. Java Campus Program Purpose of the class: to learn JAVA Programming language To acquire the license provided by Sun through passing the examination in the class Enhancement of Marketability of students at employment market Due to higher license necessity of working experience Attempt of acquiring educational finance by tying-up with software companies to organize a framework

18. Class Room Screen Camera Class Room Images Actual scene of distance learning MMU AIT JGN Antenna ODU/IDU Router Class Room Router Screen Camera projector On Demand Server Client for Lecturer Relay Server On Demand Server Client for Lecturer Relay Server Servers for Distant Education Servers for Distant Education Severs LMS Server system LMS Server system LearningManagementSystem LearningManagementSystem U. Tsukuba