1. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 1 802.11u Proposal Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfstuart.kerry@philips.compatcom@ieee.org Date: 2005-09-21 Authors:

2. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 2 Purpose This presentation expresses our understanding of the 802.11u requirements and proposes solutions to fulfill some of the requirements.

3. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 3 Outline Basic Issues associated with Interworking Our proposal to 802.11u Architecture Our proposal to Network Selection Our proposal to STA sharing

4. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 4 Our View of Interworking Issues External Network Information Interworking Capability Network Selection Network Sharing STA Sharing Security and Protection Battery Consumption

5. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 5 Network Selection Network Selection is about: –Is this network my home network? If no, does it have the capability of interworking? –R3N2: select the correct credentials when authenticating with a Local Network. Network Selection is based on –External Network Information –Local Network Information Interworking capability R3E4: Functionality shall be provided by which APs can advertise (before connection) the charges that will be made for use of the network if a user enrolls with it.

6. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 6 Interworking Capability Some examples of Interworking Capability are: –R3E1: what online enrolment (also called online subscription) methods are supported by the network. –R3M4: Emergency Call (e.g. E911) service. Specifically: Capability Advertisement –MIH Capability (unapproved requirement)

7. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 7 External Network Information External Network Information includes those from: –R3N1: Define functionality by which a STA can determine whether its subscription to an SSPN would allow it to access a particular 802.11AN before actually joining a BSS within that 802.11 AN –R3N4: Define functionality by which a STA can determine which interworking services are available before joining a BSS –R3N5: Functionality shall be provided by which APs can advertise (before connection) the charges that will be made for use of the network if connection is authorized based on an SSPN subscription. –MIH related information (unapproved requirements)

8. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 8 Network Sharing Network Sharing is addressed by: –R3N3: Define functionality to support authentication with multiple SSPNs through a single AP. –SSPN Interface Cluster –User Plane Cluster

9. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 9 STA Sharing STA Sharing is for: –R3A1: A STA shall be able to authenticate with different SSPNs simultaneously, in order to gain simultaneous access to multiple Destination Networks.

10. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 10 Security and Protection Security and Protection is from: –Protection Cluster –R3M3: All proposals (whichever requirements they address) shall describe the security impact of the functions they propose.

11. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 11 Battery Consumption From: –R3M1: All proposals (whichever requirements they address) shall describe how they minimize battery consumption for mobile devices.

12. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 12 Outline Basic Issues associated with Interworking Our proposal to 802.11u Architecture Our proposal to Network Selection Our proposal to STA sharing Summarize

13. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 13 802.11 Components DS BSS1 BSS2 STA 1 STA 2 STA 4 STA3 Portal AP 802.x LAN ESS 802.11 defined an integration service that supports MSDU delivery between BSS and integrated LAN. And, Portal is defined as the logical point at which the integration service is provided.

14. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 14 802.11u Components Proposal: A new ‘entrance’ entity Introduced DS BSS1 BSS2 STA 1 STA 2 STA 4 STA3 Portal AP 802.x LAN External Network Entrance We also define ‘entrance’ as the logical point at which the interworking service is provided. An 802.11u network can interwork with different external networks by only one entrance or related different entrances.

15. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 15 General Model of Interworking Network Entities DS AP Entrance AP STA1STA3TOE AS/ proxy GW TOE AS SSPN

16. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 16 Basic Interworking functions DS AP Entrance AP STA1STA3TOE AS/ proxy GW TOE AS SSPN External network information service Delivery service with constraints External network Discovery and selection

17. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 17 New Architectural Services for Interworking Network Discovery and Selection –Used by STA to discover and select available networks External Network Information Service –This is a DSS that can be used by an AP to access external network information for supporting STA network discovery/selection. Delivery service with the specified constraints –This is a DSS that can be used by an AP to request that DS carry a specific flow according to the specified constraints (e.g. SSPN authorization information).

18. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 18 Outline Basic Issues associated with Interworking Our proposal to 802.11u Architecture Our proposal to Network Selection Our proposal to STA sharing Summarize

19. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 19 802.11u Network Selection 802.11u Network Selection Should based on Interwoking Capability and related external network information.

20. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 20 Interworking Capability Information Network Owner Identifier Basic Interworking capability Information –Interworking Capability Bit Support interworking or not –MIH Bit MIH enabled or not –Emergency call Bit Emergency call enabled or not –…… Online enrollment methods –e.g. UAM

21. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 21 External Network Information External Network Identifier Interworking Type –Intranet –Internet –3GPP 3GPP scenarios 1 == Internet 3GPP scenarios 2 3GPP Scenarios 3 …… –3GPP2 –UMA Other related information –E.g. MIH network information, charges information, Roaming related information, etc.

22. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 22 Network Selection Routine APSTA Message 1: Interworking Capability Information Message 2: Network Discovery Request Message 3: Network Discovery Response Begin to SCAN Join a selected BSS DS External Network Information Request External Network Information Response

23. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 23 Outline Basic Issues associated with Interworking Our proposal to 802.11u Architecture Our proposal to Network Selection Our proposal to STA sharing Summarize

24. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 24 Requirements DS External Network Entrance AP STA External Network TOE1TOE2 Entrance AS1 AS2

25. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 25 Virtual STA Approach AP V-STA1V-STA2STA2 DS BSS STA1 One STA may simulate as more than one virtual STAs (v-STAs). Each v-STA has independent state machine.

26. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 26 The Creation of Visual STA STAAP Temporary address allocation request （ V-STA instance No. ） Temporary address allocation response (V-STA instance No, T-MAC-ADDR ） Create Virtual STA Association request Association Response Authenticate Temporary address allocation Temporary Address Allocation can be also considered as a DSS..

27. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 27 Communication based on virtual STA Client#1Client#2 Visrtal STA mapping T-MAC#1T-MAC#2 STA TOE#1TOE#2 Virtual STA mapping T-MAC#2T-MAC#1 AP AS#1AS#2

28. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 28 MSDUs from STA to AP MAC (STA) MAC (AP) MA-UNITDATA.request Replace TA from real MAC address To V-STA temporary address MSDU transfer MA-UNITDATA.indication MA-UNITDATA-STATUS.indication Resume TA from V-STA temporary Address to real MAC address

29. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 29 MSDUs from AP to STA MAC (AP) MAC (STA) MA-UNITDATA.request MSDU transfer MA-UNITDATA.indication MA-UNITDATA-STATUS.indication Replace RA from real MAC address To V-STA temporary address Resume RA from V-STA temporary Address to real MAC address

30. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 30 Summary Basic Issues –Network Selection, Network sharing, STA sharing, etc. Proposal to 802.11u Architecture –‘Entrance’ Entity, External network information service, Bear service Proposal to Network selection –Network selection based on interworking capability and external network information. Proposal to network sharing –Virtual STA approach

31. doc.: IEEE 802.11-05/0850r4 Submission September, 2005 Yao Zhonghui, Huawei Slide 31 References 11-05-0822-03-000u-tgu-requirements 11-05-0279-15-000u-suggested-tgu-functional- requirements 11-05-0333-05-000u-terms-and-definitions 11-05-0355-04-000u-draft-scope-scenarios-and- assumptions