Feb 22nd 2002

Infrastructure requirements for distance education

Keiko Okawa

WIDE Project

Pacific Rim Networking – February 22nd, 2002

Agenda

• WIDE distance education activity as a sample

• Today’s difficulties

• Requirements for Network

Pacific Rim Networking – February 22nd, 2002

WIDE SOI

• School of Internet Working Group in WIDE Project since 1997

• Mission– Share and preserve the valuable educational resources

on the Internet– Technology Deployment

• In between “researchers” and “users”.• demonstrate the social value of the technology.

– Internet Deployment• Internet, as a vehicle of “Global Educational Environment”.• Implement it wherever needed.

Pacific Rim Networking – February 22nd, 2002

SOI Current Activities

• SOI Class– Supporting the remote participation to the educational

activities from anywhere, anytime.

• SOI Global Classroom– Expanding the classroom all over the world

• SOI Global Studio– Shared facility among educational institutes for inviting

guest speakers

• SOI ASIA– SOI Global Classroom in Asia

Pacific Rim Networking – February 22nd, 2002

SOI Class

• Systems– SOI for individual learners– SOI remote participation class – on-demand clas– multimedia learning resource– Assignment System– Course Survey System– Transcript System– Copyright System– SOI CA and My SOI– Faculty Support

• Technology– Web and database– Streaming– Multimedia Synchronization– Digital Signature and Certificate authority

Pacific Rim Networking – February 22nd, 2002

SOI Class

• What– 1112 hours of IT related lectures.

– 43 courses by 20 universities

– 83 special lectures and tutorials.

Pacific Rim Networking – February 22nd, 2002

SOI Global Classroom

• Global class– Joint class

• Students in Multiple sites• Teachers in Multiple sites

– Shared class• Students in Multiple sites

– Remote lecture• Teachers in remote site

• Technology– IPv6– Multicast– DVTS (Digital Video over IP)– High speed Internet infrastructure (JGN, Internet 2 etc)– Remote presentation tools

Pacific Rim Networking – February 22nd, 2002

SOI Asia

• Mission– Human resource development in Asia with “SOI Global Class”

using SOI educational resource.

• Challenge– Deployment of Internet, Internet culture and learning

environment with Internet

• Technology– Satellite Internet over C-band (AI3)– RO satellite and UDLR technology (UDLR)– Multicast technology– Multicast streaming– IPv6

Pacific Rim Networking – February 22nd, 2002

Daily activities

• Domestic multipoint shared classes 3 times / week– bi-directional DVTS/IPv6/Multicast

• International multipoint shared classes weekly– Japan and US– Japan and Asian countries

Pacific Rim Networking – February 22nd, 2002

The InternetThe Internet

Learn through your local mirror server

Giving LecturesFrom Japanese Universities

Taking Lectures atYour Institutions

LANLAN

SOI Mirror Server

SOI Asia

Pacific Rim Networking – February 22nd, 2002

IF Coaxial Cable

UDLR Receiver

LAN

JCSAT-3 C-Band C-7 transponder

L-Band (950 - 1450MHz)

Terrestrial Internet

AC power supply

SOI Server

Provided by SOI Asia Project

Prepared by Institution

SOI Asia Site Configuration

SOI Clients

Receive Router

CampusLAN

CampusLAN

Pacific Rim Networking – February 22nd, 2002

Site Setup StatusMyanmar

ThailandLaos

Pacific Rim Networking – February 22nd, 2002

Remote Lecture

3 professors @ San Diego Super Computer Center

Students @ 3 universities in JapanNAIST

U-Tokyo

SFC

Pacific Rim Networking – February 22nd, 2002

SOI Global Studio Sessions

Studio@Palo Alto, CA

Studio@Maryland

KEIO University, SFC

Pacific Rim Networking – February 22nd, 2002

Today’s difficulties

• Unknown end-to-end throughput– For design phase– Daily condition– Assured ?

• Multicast problems – Equipments are not fully ready– High bandwidth is not fully supported– Global operation is not ready

• IPv6 tunneling problems– Routing in the tunnel is unknown

• Information about the Network problems– Where to contact ?– How serious ?– Timezone differences makes it harder

• Schedule Conflicting– Shared mechanism of limited resources

Pacific Rim Networking – February 22nd, 2002

Requirements

• Native IPv6 Ready– Capable constant bi-directional high bandwidth traffic

• Multicast Ready– Stable equipments– Global Operation– High bandwidth

• End-to-End Global stable operation– throughput estimation – Trouble estimation and shooting– Information Sharing

• Information Sharing among group– to support growing classes– global scheduling– reservation mechanism

Pacific Rim Networking – February 22nd, 2002

Thank you