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March 2003
Stephen McCann & Max Riegel, Siemens
Slide 1
doc.: IEEE 802.11-03/162r0
Submission
Wireless Interworking
Stephen McCann & Max Riegel, Siemens
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 2
doc.: IEEE 802.11-03/162r0
Submission
Wireless Interworking
Internet
MobileClient
W-ISP Access Network
AC
AAAH
3GPP2MNO
HLR
AAAH
3GPPMNO
AAAH
HomeISP
RoamingBroker
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 3
doc.: IEEE 802.11-03/162r0
Submission
Existing 802.11 system
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 4
doc.: IEEE 802.11-03/162r0
Submission
Is interworking inside the scope of 802.11
• Yes, it defines the functions of a public access Wireless Ethernet interface.
• Yes, similar approach to TGf : signalling to enable communications between access points.
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 5
doc.: IEEE 802.11-03/162r0
Submission
Internet/Web Applications
Generic Internet architecture
Internet
linkphy
iptcphttpwww
linkphy
iplinkphy
iplinkphy
iplinkphy
ip802.2802.11
linkphy
ip802.2802.11
iptcphttpwww
802.2802.3
ip802.2802.3
AAA Server
WLAN AccessWeb Server
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 6
doc.: IEEE 802.11-03/162r0
Submission
Existing 802.11stack
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 7
doc.: IEEE 802.11-03/162r0
Submission
TGf also re-uses IETF protocols
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 8
doc.: IEEE 802.11-03/162r0
Submission
Interworking : What ?
• Seems to be a lot of interest here.
• What can WNG do ?– Look at current 802.11 functions/interfaces– What additions are required to meet W-ISP &
Cellular requirements (3GPP and 3GPP2)– Come up with a model which matches the
external networks of all these guys.
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 9
doc.: IEEE 802.11-03/162r0
Submission
What do you mean ?
• 802.11 requires some work in the access network to define external interfaces
• TGe, TGf, TGi and TGk have started to do this already with functions.
• Need to look at Accounting as mentioned yesterday
• Let‘s start by looking at issues in the 3GPP requirements document.
• Must also address W-ISP and 3GPP2
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 10
doc.: IEEE 802.11-03/162r0
Submission
802.11 existing bits
User CredentialStorage
MT
ApplicationUser Data
Forwarding Function
Ms
WLAN Technology802.11
Standard Network Protocols
WLAN Technology802.11
Standard Network Protocols
W2Air
Interface Lh
Lm
IAPP+RADIUSclient
(802.11f)
LsAuthenticator
(802.11i)
NMS(802.11k)
AP
AuthenticationServer
(802.11i)
User Data Flow
Interface
APME(802.11k)
RADIUSServer
(802.11f)
Supplicant(802.11i)
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 11
doc.: IEEE 802.11-03/162r0
Submission
Generic Architecture
W2 W3AI
WLAN Functions
EaLa
Epa
EsLs
Lp
Attendant
ResourceMonitor
Authoriser
Ep
WLAN
User CredentialStorage
MT
AccountingFunction
AuthenticationFunction
User Data Flow
Interface
Application
AuthorisationFunction
User DataForwarding Function
Authenticator
Ms
WLAN Technology
Standard Network Protocols
WLAN Technology
Standard Network Protocols
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 12
doc.: IEEE 802.11-03/162r0
Submission
Roadmap
• Create TG to produce Recommended Practice (RP)
• @Singapore : review PAR & 5Criteria.• Work towards a RP skeleton document
incorporating the requirements of 3GPP SA2.
• @San Francisco : Present documents to WNG and WG Plenary.
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 13
doc.: IEEE 802.11-03/162r0
Submission
Liaison from 3GPP SA2
• Black Box Requirements– Network Discovery (SSID)– RADIUS/Diameter– Uniform service levels for hotspots– For more info : 11-03-194r0-WNG-3GPP-
Implicit-Reqts-WLAN-BlackBox.doc
March 2003
Stephen McCann & Max Riegel, Siemens
Slide 14
doc.: IEEE 802.11-03/162r0
Submission
Response to 3GPP Liaison
• What should the WNG actions be.
• Propose liaison response : – Immediate full reply– 2 stage reply. Liaison indicating direction
followed by a detailed response later.
• Look at 11-03-226r0 (draft liaison)
