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Interactive Multimedia Education at Distance on the Wideband InterNetworking using Internet Satellite eLearning in Asia based on Instruction Design technology ---University of Tsukuba, MMU, and AIT ---- November 2002 University of Tsukuba KDDI

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november 2002 university of tsukuba kddi cooperating organizations cdi ucla sun micro systems
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

slide2
Preceding work

E-learning alliance

University of Aizu

University of Tsukuba

Multimedia University

Beijing University

Asian Institute of Technology

UCLA

Shizuoka Industrial University

role of instructional designer
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

slide4
Goal of eLearning Project

Web Creator

Educator

Instructional

Design/Manager/Producer

eLearning Contents

Professors

Maintenance Manager

Goal: Obtain the experiences of Instructional/Maintenance Manegements

outline of pilot experiment contribution to society
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

framework of cooperation
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
schedule
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

r d factors in the area of experiment
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

feature of the experiment system 1
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

feature of the experimental system 2
SKYCAST LessonFeature 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

construction of pilot experimental system
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

mesh type topology
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
mf tdma method
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

linkage to the satellite development
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

×

  • 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

×

multi point e learning distance education experiment on satellite network
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
experimental system distance learning and learning management with webct
Experimental system(distance learning and learning management with WebCT)

Actual scene of distance learning

Screen of materials

Automatic marking system

Progress of learning

java campus program
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

class room images
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

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