1. The Application of Distance Education Using Advanced Hybrid Networking Chinese-American Networking Symposium Shanghai, People's Republic of China August 21-23, 2002 Dan Cotton University of Nebraska, Lincoln American Distance Education Consortium (ADEC)

2. American Distance Education Consortium WWW.ADEC.EDU

3. ADEC Janet Poley, President Ancillary organization of the University of Nebraska 12 year old non-profit organization of 50 plus state universities and land grant colleges Local, state, national and international partnerships

4. Advanced Internet Satellite Extension Project (AISEP) 3 year, National Science Foundation (NSF) $4 million NSF Supplements –Research Experiences for Undergraduates (REU) –Chinese - American Networking Symposium (CANS) –Experimental Program to Stimulate Competitive Research (EPSCoR)

5. Advanced Internet Satellite Extension Project Partnerships –ADEC, Internet2 Universities, smaller and minority serving institutions, rural and remote learners –Tachyon, Inc. –OARnet & ITEC-Ohio (Internet2 Technology Evaluation Center) –University of California San Diego Supercomputer Center - SDSC –Cooperative Association for Internet Data Analysis - CAIDA –National Laboratory for Applied Network Research - NLANR

6. Lead Institutions for AISEP University of Nebraska-Lincoln University of Maryland-College Park University of Illinois North Carolina State University North Carolina A&T University Washington State University

7. Goal Bring advanced networking applications to geographically remote campuses and learning centers for purposes of research, teaching and extension.

8. Project will: enable unreachable campuses, remote learning centers, extension offices to share in advanced networking research and applications create access for the research university community to scientific, cultural and human resources otherwise inaccessible

9. Objectives AISEP will: explore use of satellite to deliver Internet services to determine compatibility of satellite technology with I2 services and applications explore deployment and integration of DE applications, including collaborative applications at rural, remote institutions and extension learning centers

10. Tachyon.net

11. ADEC Network - SDSC

12. Typical Tachyon Satellite Dish Installation

13. ADEC Network Site Map

14. Research objectives establish standards for "acceptable, application- based Internet" for remote locations understand how to establish, build and support a satellite-based IP network Connect Tachyon satellite gateway to the San Diego NAP (I1 and I2 service) Provide CPEs (formerly TAPS) to ADEC member institutions (70 sites)

15. Research objectives (continued) investigate QoS study network performance determine requirements to support this type of network determine parameters for a sustainable business model

16. Transportable Dish System

17. Internet 1 or Internet 2 Earth Satellite Permanent Ground Station Tachyon Central Ground Station San Diego Internet Instructional Sites Instructional Sites Instructional Sites Transportable Ground Station

18. Design Goals Inexpensive to build and operate Off-the-shelf parts for easy duplication Easy to operate by one person with one day training Small and light Reliable and adaptable to diverse field conditions Easily modified

19. Initial Applications Provide distance learning in rural/remote and underserved areas Link field research to campus computers, laboratories, and collaborators worldwide Link field instruction and demonstrations to campus classrooms Link field activities to remote databases using devices such as PDAs Remote monitoring of construction projects Special events, conferences, fairs, disasters, etc.

20. Portable

21. Satellite Trailer Subsystems Dish and radio transceiver Power Leveling and aiming Heating and cooling External connections Computer

22. Next steps Develop improved designs Demonstrate at conferences Publish papers Provide training on use of the system Provide consultation on design, construction and operation Arrange for turnkey system purchases

23. Application Testing

24. H.323 Over Satellite

25. Variables Tachyon Network –Satellite IP, asynchronous, bandwidth settings dedicated vs. non-dedicated service Polycom –dialing speeds Internet1 – Internet2 Point-to-point, multi-point Data flow: uplink > downlink, downlink > uplink Network traffic, noise H.323 Multipoint Control Unit (MCU)

26. Testing Test tape Internet1 and Internet2 Tachyon bandwidth service –2mb/256k non-dedicated –2mb/512k non-dedicated Identify optimum Polycom speed per Tachyon bandwidth service Video tape results

27. Internet 1 or Internet 2 Earth Satellite Ground Station Tachyon Central Ground Station San Diego Internet Instructional Sites Instructional Sites H.323 Testing ITEC-Ohio

28. Observations Data rate Frame rate Packet loss Pixilation Latency Jitter

29. Preliminary results Some fluctuations in quality Some packet loss It worked! Excellent video –Internet2 <> 2Mbps / 512Kbps with 384Kpbs Tachyon service level

30. Program Design

31. ADEC H.323 Presentation for Megaconference III

32. Lessons Learned Hybrid networking works Television techniques can be applied….and they positively impact program quality –Studio cameras –Studio lighting –Studio set –Microphones –Producer / director Don’t limit your thinking….explore all possibilities

33. Multicast Over Satellite

34. Variables Internet2 <> Tachyon –PIM Sparse Mode (Internet2) versus DVMRP (Tachyon) IGMP Internet1, and non-multicast enabled sites –Cisco –Quickcom MPEG –VBrick –Other technologies

35. Testing/Observations Internet2 <> Tachyon –Iowa State University – video streaming ITEC-Ohio –ADEC router configuration –Monitoring Works quite well!

36. Research Projects EPSCoR –…to extend the AISEP test-bed into EPSCoR states in a systematic fashion, as well as test specific remote sensing, GIS and other scientific applications of hybrid networking, including satellite –…using appropriate combinations of fiber, satellite, wires and radio technology to carry signals in combination with software and devices for data collection, communications, visualization and decision making

37. Research Projects EPSCoR –8 sub-projects Land management Aquaculture Water conservation and management Environmental monitoring

38. Nebraska Research, Teaching and Extension Project Internet2 Applications to Enhance the Management of Natural and Agro- ecosystems.” –Carbon Sequestration and Global Climate Change –Improved Efficiencies of Nitrogen and Irrigation Management –Grazing Behavior of Cattle in the Nebraskan Sandhills

39. Internet 2 Earth Satellite IP Tachyon Central Ground Station San Diego University of Nebraska Lincoln Data loggers and sensors Tachyon Access Point (TAP) Computer 802.11b network Improved Efficiencies of Nitrogen and Irrigation Management

40. Why this work? ADEC believes distance education…. –is about providing new knowledge and information wherever and whenever the learner is ready to take advantage of it –positively impacts competition –leads to improved economic development –aids in cultural sharing and understanding –is vital in community building –requires advanced networking and information technology

41. Credits Janet Poley, Ph D –President of ADEC Bob Dixson, Ph D, PE –Chief Research Engineer –Ohio State, OARnet Paul Schopis –Senior Network Engineer –ITEC-Ohio

42. Questions