1. WiNOT Consortium - Proposal for online enrollment cluster
March 2006
doc.: IEEE /0000r0
March 2006
WiNOT Consortium - Proposal for online enrollment cluster
Date: 3rd March 2006
Authors:
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Stefan Berg, BenQ

2. March 2006
doc.: IEEE /0000r0
March 2006
Abstract
This proposal addresses the Online Enrollment Cluster requirements for IEEE u (see reference document IEEE /0275r0). The proposal has been produced by the WiNOT consortium.
Req.
Description
Addressed E1
Online enrollment support by local network
Yes E2
New online enrollment mechanism No E4
Advertisement of charges E5
Online enrollment support by SSPN G1
Minimize battery consumption G2
Security impact of solution G3
Support of legacy devices
Stefan Berg, BenQ

3. Basic information concept (1/2)
March 2006
doc.: IEEE /0000r0
March 2006
Basic information concept (1/2)
Requirement E1: Online enrollment support by local network
Information whether authentication (and credentials) of the user is needed
Information whether online enrollment is possible
List of all the supported online enrollment methods
Information whether the access is public (free for everybody) or private
Authentication Required Bit
(Y/N)
Online Enrollment Supported Bit
(Y/N)
Methods
{UAM, EAP based, …}
Open Access Bit
(Y/N)
Stefan Berg, BenQ

4. Basic information concept (2/2)
March 2006
doc.: IEEE /0000r0
March 2006
Basic information concept (2/2)
Requirement E4: Advertisement of charges
Information whether the use of the network is free of charge or not
Access Charged Bit
(Y/N)
Stefan Berg, BenQ

5. Information Discovery
March 2006
doc.: IEEE /0000r0
March 2006
Information Discovery
Passive discovery:
A bit in the broadcast beacon capabilities indicates the support of u specification
The STA can assume, that the network will provide information on online enrollment
Active discovery:
A new action frame format enables a query/response mechanism to obtain online enrollment information from the network
The STA can query the network for information on online enrollment
Note: As online enrollment is considered as additional information for network selection the query/response mechanism to obtain the information should be aligned/identical
Stefan Berg, BenQ

6. Discovery – Message flow
March 2006
doc.: IEEE /0000r0
March 2006
Discovery – Message flow
STA AP
Broadcast Beacon: “TGu supported”
Passive Discovery
(Enrollment) Information Request Action Frame
(Enrollment) Information Response Action Frame
Active Discovery
Stefan Berg, BenQ

7. Information format (1/2)
March 2006
doc.: IEEE /0000r0
March 2006
Information format (1/2)
A new online enrollment information element (IE) is defined
4 bits are defined to indicate online enrollment information
Element ID
(1 octet)
Length
Flags
Information
(length)
TBD
1-255
Capabilities
Enrollment methods
(Bitmap)
Bit 1 2 3 4 5 6 7
Auth
Required
Enrollment
Support
Open
access
Access
charged
Reserved
Stefan Berg, BenQ

8. Information format (2/2)
March 2006
doc.: IEEE /0000r0
March 2006
Information format (2/2)
A bitmap contains a list of all supported online enrollment methods
Note: The information provided for online enrollment is closely related to the information treated in the network selection cluster. Therefore the final information format could be defined as a common information element format leaving place for further optimization.
Bit 1 2 3 4 5 6 7
UAM
EAP
Reserved
Stefan Berg, BenQ

9. Analysis of general requirements
March 2006
doc.: IEEE /0000r0
March 2006
Analysis of general requirements
G1: Minimize battery consumption
Additional exchange of management frames to probe for new enrollment related information elements may increase power consumption
G2: Security impact of solution
Enrollment functionality, that has been advertised, has to be checked in the enrollment procedure
Cost information has to be verified after authentication over a secured channel
G3: Support of legacy devices
Legacy devices will ignore any new IEs or action frames
Stefan Berg, BenQ

10. Summary of the proposal
March 2006
doc.: IEEE /0000r0
March 2006
Summary of the proposal
The proposal addresses E1 (required) and E4 (optional) of the requirements of the online enrollment cluster
The solutions comprises
An information concept to support online enrollment
Mechanisms for active and passive discovery
A possible information format
Analysis of general requirements G1, G2 and G3 (all required)
Stefan Berg, BenQ

11. This proposal is supported by
March 2006
doc.: IEEE /0000r0
March 2006
This proposal is supported by
Name
Company
Address
Phone
Stefan Berg
Wolfgang Gröting
BenQ
Neutorplatz 3-4
46395 Bocholt, Germany
benq.com
benq.com
Yang Sook Hyun
Ronny Yongho Kim
LG Electronics
16 Woomyeon-dong Seocho-gu Seoul Korea
533 Hogye-1dong Dongan-gu Anyang-shi Kyongki-do Korea
lge.com
lge.com
Eleanor Hepworth
Andrew McDonald
Siemens Roke Manor Research
Roke Manor, Romsey, Hampshire, UK
roke.co.uk
roke.co.uk
Stefano Faccin
Jon Edney
Jari Jokela
Nokia
6000 Connection Drive; Irving, TX USA
Cambridge, UK
Tampere, Finland
nokia.com
nokia.com
nokia.com
Farooq Bari
Cingular Wireless
th Avenue N.E. Redmond, WA USA
cingular.com
Andrew Myers
Colin Blanchard BT
Adastral Park Ipswich, UK
bt.com
bt.com
Stefan Berg, BenQ

12. Backup Slides March 2006 March 2006 doc.: IEEE 802.11-06/0000r0
Stefan Berg, BenQ

13. User scenario – Looking for a UAM supporting hotspot
March 2006
User scenario – Looking for a UAM supporting hotspot
Internet
The user enters an area where there are three hotspots present
Without online enrollment information: in worst case the user has to associate with every AP, start the web browser and wait for redirection to the web-login
With online enrollment information: the user can directly select an AP that supports UAM, so only one association is necessary
The advantages are time saving, reduced air traffic and better user experience
Hotspot #1
Non-UAM
Hotspot #2
Non-UAM
Hotspot #3
UAM