A "Portable Cloud Computing System (Portable Cloud)" is discussed. This system is a portable system that can turn any room into an ICT-enhanced classroom or an ICT-enhanced meeting-room. The Portable Cloud is a carrying case, which contains Wi-Fi access points, a network switch, and a server cluster. The server cluster includes a NAPT (Network Address Port Translation) router, a DHCP server, a captive portal, and application servers. The Wi-Fi access points, the NAPT router, the captive portal and the DHCP server make the space where the Portable Cloud is located, Internet accessible. The application servers contains applications such like "Distributed Web Screen Share (DWSS)", "Slide Plus", and "OwnCloud". The DWSS is a web application which transmits a live screen image of a PC to a large number of Web clients. Slide Plus is an interactive live slide presentation tool for a large audience with Web clients. OwnCloud is open source software by owncloud.com. This software enables file sharing among students and teachers similar to that found in Dropbox. We are using the Portable Cloud for our seminar class, meetings of grass-root groups, and academic conferences. We can't imagine holding our seminar class without the Portable Cloud.

1. Portable Cloud Computing System
– A System which Makes Everywhere
an ICT Enhanced Classroom –
Takashi Yamanoue, Soshi Tetaka,
Kentaro Oda, Koichi Shimozono
Kagoshima University, Japan

2. BackGround
Today

3. BYOD

4. The class room has Wi-Fi access
points?
 IF yes, the Wi-Fi access points have
enough ability to have a class?
 The teacher can deliver the class’s
material through the Wi-Fi?
The class room has the projector and
the screen?

5. Turn any room into an
ICT-enhanced classroom
or an ICT-enhanced
meeting room.

6. Portable Cloud

7. FreeBS
D

9. WebScreenShare
Modern Class room … Projector + Screen
？

11. Portable Cloud not only
transform any place into an IT
enhanced classroom
But also improve performance
of some applications.

13. Server’s place
(a) Portable
Cloud
(a) The Internet
Received Pictures Rate
(%)
100 50.8
Average Frame Rate
(fps)
6.17 3.01
Average Delay (ms) 108 598
Standard Deviation of
Delay (ms)
41.1 113.9

15. Related work
Portable multi purpose LAN
socket server
훆-ARK
Portable Super Computer
Moodle Lite
ACM SIGUCCS Conferences

16. Conclusion
Portable Cloud Computing System
We are using now.