This document discusses the opportunity for wireless success through 4G and eduroam. It notes the exponential growth of eduroam Wi-Fi users in the Netherlands and cellular trends showing increased 4G adoption. A pilot was conducted integrating 4G and eduroam to allow seamless roaming between wireless networks. The pilot aimed to understand added value for education and research and develop the technical architecture. Preliminary results were promising and opportunities exist to cooperate with operators on the educational market and wireless offloading.
16. Vision: 4G/LTE and eduroam both as
access network for campus
Campus
Challenge: users
need to experience
SURFnet seamless roaming
between Wi-Fi and LTE
Internet
16
17. 4G and eduroam seamless integrated
access network: the advantages
Allow students, researchers and employees to collaborate,
research, learn anytime and anywhere they seem fit!
• Transparent wireless internet access via NREN
• Carefree, Trusted and Safe connectivity
• Technology Agnostic campus (WiFi/4G/3G…)
• Possible integration with campus services (e.g. UC)
• Good basis for cloud and federative services
• Opportunity to gather demand for optimum LTE price-quality
ratio
17
18. 4G+eduroam
Building blocks schematic overview
AAA AAA proxy AAA
SURFnet
User
home
eduroam
DB
institute
Visiting
institute
Internet
AAA proxy AAA
SURFnet User
generic
DB home
Mobile institute
operator Internet
AAA proxy AAA
home institutional
institute
SURFnet User
DB
Mobile
operator
Internet
18
19. LTE+eduroam: building blocks
Two building blocks:
1. Institutional traffic
- Transparent tunnel from LTE to Layer2-infra at the institute
2. Generic traffic
- LTE direct connected to the internet, via the SURFnet-backbone
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20. Features building blocks compared
Feature Institutional Generic Default
traffic traffic Telco LTE
LTE can be regarded similarly as Yes No No
local Wi-Fi traffic
Secure access based on eduroam Yes Yes No
credentials
Internet access though SURFnet Yes Yes No
IP address from institute Yes Yes No
Native integration with unified Yes No No
communication (voice, e-mail,…),
local printing etc
Allows monitoring of traffic, Yes Possible Partly
authentication
Allows strong demand Yes Yes Partly
aggregation
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21. In Practice:
Pilot 4G eduroam for Education & Research
21
22. Utrecht Science Park Coverage (20 m2)
9 km (5.6 mi)
Pilot Area
6 km (3.7 mi)
Antenna location 22
24. Goals of 4G eduroam pilot
1. Build and share knowledge, determine added value of 2.6 Ghz LTE
networks in education and research environments
2. Develop technical architecture and test environment for integration of LTE
and eduroam
3. Encourage development of mobile apps for education and research,
using LTE/eduroam/federative concepts
4. Get input for tendering a combined eduroam and 4G/3G service for
customers B2C and B2B with the following features:
- Provider 4/3G coverage (inter)national
- Use of eduroam credentials for network-access
- Offloading to eduroam Wi-Fi on “hotspots” and campuses
- Use capacity of SURFnet backbone
- Potential of one million users
- Integrated with campus services (e.g. Library service, UC)
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25. Many questions to address…
• What is the added value of a fully 4G coverage on the campus
for educational purposes?
• How does it stimulate the new working and learning? Which
applications can be used now, that couldn’t be used before?
Does it enable better cooperation among students and
teachers? What new educational developments does it start?
• Is the 4G service comparable with the eduroam (Wi-Fi) service
and can we provide “seamless roaming”?
• How should the eduroam/3/4G infrastructures best be
integrated?
• What are the characteristics of IPv6 on 4G
• Can we use the smart card for access to federated service?
• Does it save costs, improve quality or both?
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26. 4G trials at the institutes
• Veterinary Medicine @ University of Utrecht
- Assessment during clinical operations in the field (mobile access to ePASS)
- Remote supervision during clinical operations
- Consulting literature, study material
• Journalism @ Hogeschool Utrecht
- Camera and location for education course
• UMCU
- Integration in Distributed Antenna system (Wi-Fi / LTE roaming) and user
experience
- Streaming video to monitor alarms in Intensive Care
- Web lectures via 4G
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SURFnet - We make innovation work
27. Status of our 4G eduroam pilot
• LTE Service up and running (since May 11th, 2012)
• LG Optimus LTE Smartphone devices expected this week + Dongles
• Research questions for the first pilot worked out
• 4G eduroam architecture in progress (next slides)
Q3: - 4G trial inside SURFnet offices
- Architecture 4G eduroam implemented
- Start trial with Utrecht Medical Hospital.
Q4: - Start trial with Hogeschool Utrecht
2013: Involve another campus, test roaming
2012: New developments: New operator, new campus!
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28. Building blocks schematic overview
AAA AAA proxy AAA
SURFnet
User
home
eduroam
DB
institute
Visiting
institute
Internet
AAA AAA
SURFnet User
generic
DB home
Mobile institute
operator Internet
AAA proxy AAA
home institutional
institute
SURFnet User
DB
Mobile
operator
Internet
28
30. Operator domain SURFnet domain Domain home institute
Radius Radius Radius
APN
client Proxy Proxy
1. Access trigger
(username@ 2. forward (username@
home_institute) home_institute)
Resolve Tel.#,IMSI,IMEI
3. Access-Request (username@
home_institute, tel#, IMEI, IMSI, APN_name)
check if APN_name
corresponds with
realm of home institute Auth.
Only!
4. Access-Request (username@home_institute, tel#)
check if username
corresponds with
username
5. Access-Accept (IP address)
6. Access-Accept (IP address)
7. Access-Accept (IP address)
7. Access granted
8. Establisch PDP
context 9. trigger
10. Accounting-Request (IP address)
11. Accounting-Response()
12. Accounting-Request (IP address)
13. Accounting-Response()
31. Conclusions
• There is a role for NRENs in 4G to enable learning and
researching everywhere
• Operators seem interested in the educational market and also
Wi-Fi offloading techniques. Opportunity to cooperate
• 4G/LTE as complementary access network for campuses
seems like a good way to go
• 4G can be great add-on for non-WiFi locations (and vice
versa), but roaming has to be as seamless as possible
• Gathering demand for a specific ‘4G eduroam’ service can
assure a transparent, safe accessible wireless internet for our
users
• Cooperate within GEANT for pan-european mobile service
31