1. doc.: IEEE 802.11-05/0850r2 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 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 2 Abstract This presentation gives a summary of the general problems of interworking from 802.11u requirements and gives a solution on some of these problems.

3. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 3 Outline General Questions on Interworking 802.11u Architecture Network Selection Visual STA Summary

4. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 4 General Questions on Interworking External Network Information Interworking Capability Network Selection Network Sharing STA Sharing Security and Protection Battery Consumption

5. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 5 Interworking Capability Interworking Capability includes: –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)

6. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 6 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)

7. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 7 Network Selection Is this network my home network? If no, does it have the capability of interworking? External Network Information required. Other factors except from above interworking capability and external network information: –R3N2: select the correct credentials when authenticating with a Local Network. –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.

8. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 8 Network Sharing The Question of Network Sharing is from: –R3N3: Define functionality to support authentication with multiple SSPNs through a single AP. –SSPN Interface Cluster –User Plane Cluster

9. doc.: IEEE 802.11-05/0850r2 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 802.11-05/0850r2 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 802.11-05/0850r2 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 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 12 Outline General Questions on Interworking 802.11u Architecture Network Selection Visual STA Summary

13. doc.: IEEE 802.11-05/0850r2 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 802.11-05/0850r2 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 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 15 Overview Model of Interworking Network Entities DS AP Entrance AP STA1STA3TOE AS/ proxy GW TOE AS SSPN

16. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 16 Overview Model of Network Entities DS AP Entrance AP STA1STA3TOE AS/ proxy GW TOE AS SSPN Here’s 802.11u Concerns.

17. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 17 Basic Interworking functions DS AP Entrance AP STA1STA3TOE AS/ proxy GW TOE AS SSPN External network information service Bear service External network Discovery and selection

18. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 18 New Architectural Services for Interworking External Network Information Service –This is a DSS that an AP can access external network information for supporting STA network discovery/selection. Bear Service –This is a DSS that an AP can request DS to maintain a bear for a specific flow according SSPN authorization information.

19. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 19 Outline General Questions on Interworking 802.11u Architecture Network Selection Visual STA Summary

20. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 20 Background 802.11 Network Selection based on SSID, and BSSDescription. BSSDescription includes network capability information of: –CapabilityInformation –BSSBasicRateSet –RSN –Etc

21. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 21 802.11u Network Selection 802.11u Network Selection Should based on Interwoking Capability and related external network information.

22. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 22 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

23. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 23 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.

24. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 24 External Network Information Service is a DSS AP DS SAP A 、 request-response mechanism (a1) External-network-information.request (a2) External-network-information.response B 、 Indication mechanism (b) External-network-information.indication (a1) (a2) (b)

25. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 25 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

26. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 26 Outline General Questions on Interworking 802.11u Architecture Network Selection Visual STA Summary

27. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 27 Requirements DS External Network Entrance AP STA External Network TOE1TOE2 Entrance AS1 AS2

28. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 28 Visual STA Approach AP V-STA1V-STA2STA2 DS BSS STA1 One STA may simulate as more than one visual STAs (v-STAs). Each v-STA has independent state machine.

29. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 29 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 Visual STA Association request Association Response Authenticate Temporary address allocation Temporary Address Allocation can be also considered as a DSS..

30. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 30 Communication based on visual STA Client#1Client#2 Visual STA mapping T-MAC#1T-MAC#2 STA TOE#1TOE#2 Visual STA mapping T-MAC#2T-MAC#1 AP AS#1AS#2

31. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 31 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

32. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 32 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

33. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 33 Outline General Questions on Interworking 802.11u Architecture Network Selection Visual STA Summary

34. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 34 Summary 802.11u General questions –Network Selection, Network sharing, STA sharing, etc. 802.11u Architecture –‘Entrance’ Entity, External network information service, Bear service 802.11u Network selection mechanism –Network selection based on interworking capability and external network information. 802.11u Visual STA approach for STA sharing and MAC protection –Temporary MAC address allocation –Visual STA service

35. doc.: IEEE 802.11-05/0850r2 Submission September, 2005 Yao Zhonghui, Huawei Slide 35 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