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.

1. 4G and eduroam: opportunity for wireless success
Maurice van den Akker
Team Manager Mobility SURFnet

2. Agenda
• Wireless trends in the Netherlands
• 4G and eduroam both as access network
• In practice: 4G eduroam pilot

3. SURFnet Mission statement
Researchers, instructors, and students
work together simply and effectively
with the aid of –mobile– ICT

4. Exponential use of eduroam in NL
Shows non-local eduroam Wi-Fi users (monthly)
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SURFnet - We make innovation work

5. eduroam coverage in NL
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6. Cellular trends in NL
Source: opta
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7. Format evolution 1990-2012
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8. 4 generations of mobile phone designs
1983: 1G 1992: 2G 2005: 3G 2013: 4G?
Motorola GSM goes UMTS LTE “hedgehog”
“The Brick” global smart phone 5 carriers
8x8 + 4x4 MIMO
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9. Some issues with LTE frequencies
1 1920 - 1980 2110 - 2170 Japan, Europe, Asia
Band Uplink [Mhz] Downlink[Mhz] Country
2 1850 - 1910 1930 - 1990 Can, USA, Latin America
3 1710 - 1785 1805 - 1880 Finland, Germany
4 1710 - 1755 2110 - 2155 Canada, USA, Latin America
5 824 - 849 869 - 894 Canada, USA, Latin America,
Australia, South Korea
6 830 - 840 875 - 885 Japan
7 2500 - 2570 2620 - 2690 EU, Latin America, South-Korea,
Canada
8 880 - 915 925 - 960 EU, Latin America
9 1749.9 - 1784.9 1844.9 - 1879.9 Japan
10 1710 - 1770 2110 - 2170 Uruguay, Ecuador, Peru
11 1427.9 - 1447.9 1475.9 - 1495.9 Japan
12 699 - 716 729 - 746 USA
13 776 - 787 746 - 757 USA (Verizon)
14 788 - 798 758 - 768 USA
17 704 - 716 734 - 746 USA (AT&T)
18 815 - 830 860 - 875 USA (Sprint)
19 830 - 845 875 - 890
20 832 - 862 791 - 821 EU
21 1447.9 - 1462.9 1495.9 - 1510.9
22 3410 - 3490 3510 - 3590
2000 - 2020 2180 - 2200
23 1626.5 - 1660.5 1525 - 1559
24 1850 - 1915 1930 - 1995
9 25 1920 - 1980 2110 - 2170

10. LTE speeds
Source: deadcellzones
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11. Worldwide LTE (“4G”) developments
trials & deployments
LTE trials Commercial LTE deployments
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12. LTE in Europe
trials & deployments
Source: Analysis Mason (GÉANT mobility feasibility study)
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13. Opportunity: eduroam and 4G!
SURFnet - We make innovation work
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SURFnet - We make innovation work

14. Cellular to Wi-Fi offload estimates

15. Business Scenarios for SURFnet
Optical WLAN
3G/4G
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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
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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
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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
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22. Utrecht Science Park Coverage (20 m2)
9 km (5.6 mi)
Pilot Area
6 km (3.7 mi)
Antenna location 22

23. Huge Media attention
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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
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29. Operator domain SURFnet domain Domain home institute
AAA
(Radius)
VLAN 0 AAA
(Radius)
Internet
internet.
VLAN 1
surfnet.nl
surfnet. VLAN 2 LP / E-LAN SURFnet
surfnet.nl
hu.surfnet.nl VLAN 3 LP / E-LAN HU
umcu.surfnet.nl VLAN 4 LP / E-LAN UMCU
uu.surfnet.nl VLAN 5 LP / E-LAN UU
NetherLight
APN

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
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32. Maurice.vandenAkker@surfnet.nl
http://www.linkedin.com/pub/maurice-van-den-akker/32/1a0/944
W http://www.surfnet.nl
+31 30 2 305 305
Creative Commons “Attribution” license:
http://creativecommons.org/licenses/by/3.0/