1. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 1 March 2003 Interworking – QoS and Authorization Tan Pek Yew & Cheng Hong Panasonic (WNG-SC) Date : 13 March 2003

2. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 2 March 2003 WLAN with 3G WLAN-3G one instance of WLAN to WMAN 3GPP effort’s in WLAN-3G –WLAN is a black box WLAN IEEE802.11 –QoS in.11e –Security in.11i

3. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 3 March 2003 Generic Architecture Mobile Terminal Interworking Functions WLAN Functions Interworking Network Air Interface W2 W3 Lx InterfacesEx WLAN Functions Ea La Epa Es Ls Lp Attendant Resource Monitor Authoriser Ep WLAN User Credential Storage MT Accounting Function Authentication Function User Data Flow Interface Application Authorisation Function User Data Forwarding Function Authenticator Ms WLAN Technology Standard Network Protocols WLAN Technology Standard Network Protocols Resource Control

4. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 4 March 2003 3GPP WLAN interworking architecture (with Policy Control) 3GPP Home Network 3GPP Visited NW Intranet / Internet HSS OCS C Gw CCF 3GPP AAA proxy Wr/ Wb Wx Wo Wf WLAN Access Network (with or without an intermediate network WLAN UE Wr/Wb Wf HLR D’/Gr’ Wn Packet data gateway Wi Wn Packet data gateway 3GPP AAA Server Wn - Tunnelled data through intermediate networks (Missing in WLAN architecture) Wr - Wireless LAN authentication (i/f to 3GPP) (As Es, Ep in WLAN architecture) Wb - Wireless LAN charging (i/f to 3GPP) (As the Ea in WLAN architecture) Go – 3GPP SBLP control interface (A TBD interface extends it to the WLAN) (I/f to 3GPP) Packet data network Packet data network C Gw CCF PDF (I/F TBD) Go PDF (I/F TBD) Go Border gateway (Opt) TBD PDF : Policy Decision Function

5. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 5 March 2003 Authentication & Authorization  Security control from 3GPP Point of view: An end-to-end EAP session (AKA/SIM) is able to mutually authenticate the UE and AAA server in 3G network. Port control at the WLAN would be open based on AAA SUCCESS. Keys generated by EAP method would be distributed together with this AAA SUCCESS (e.g. 802.11i PMK) EAP methods would put requirements on WLAN UE. EAP could also be used for Service or access authorization If other authorization or authentication methods are introduced, would it be supported by current WLAN standards?  Transport layer interface between WLAN Authenticator and 3G AAA 3GPP WLAN interworking assumes Diameter (with conversion to Radius) as AAA protocol Radius is frequently used as an example in IEEE 802.11i and 802.1X texts Where should the conversion be performed? (WLAN or 3GPP)

6. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 6 March 2003 QoS Services Requirement for Seamless Information Delivery Providing end-to-end QoS services Entities to achieve may include –WLAN Access Policy Control (Policy Control Functions) –WLAN access Policy Enforcement (Policy Enforcement Functions) Enabling QoS services to be extended to wireless data streams external to WLAN

7. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 7 March 2003 QoS in WLAN. How?  3GPP access control also includes services authorization that require QoS for delivery of data streams Should WLAN be able to control resources (e.g. grant QoS, permit tunnels) for the service? WLAN QoS has 2 access mechanism : Polled Based OR Contention Based How can QoS be specified in IEEE802.11 Networks (esp.11e) ? Implementer Point of view QoS Services required from WLAN

8. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 8 March 2003 Simulation Set-ups PHY operating at 36 Mbps Based on.11e MAC 3 STAs each transmitting 6 Mbps – Polled based 10 STAs each transmitting 600 Kbps – Contention Based Packet Error Rate at 10 % Both Polled and Contention Based station in Contention Period

9. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 9 March 2003 Simulation Results (Throughput) 3 Stations each Delivering 6 Mbps Streams (Polled Based) Average of 10 Stations Traffic using Contention Based : 5.2 Mbps 10 Stations each 600 Kbps Streams (Contention Based) Traffic of 6 Mbps Stations using Polled Based Expected Average Data Rate Selection of different types of HCF (Polled/Contention Based) yield different QoS performance

10. doc.: IEEE 802.11-03/229r0 Submission Tan Pek-Yew, Panasonic Slide 10 March 2003 Conclusions WLAN to Interwork with other Networks require basic interfaces to address –Authentication and Authorization –Network Resource allocations Deterministic performance criteria –Consistent Diameter-Radius Conversion –Services/Applications require expected WLAN QoS Performance –Consistent QoS for at all APs for the same Service/Application