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

September, 2005

Yao Zhonghui, HuaweiSlide 1

doc.: IEEE 802.11-05/0850r4

Submission

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 <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, 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 <[email protected]> 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 <[email protected]>.

Date: 2005-09-21

Name Company Address Phone email Zhonghui Yao Huawei Huawei Longgang

Production Base, Shenzhen 518129 P.R.China

+86-755-89650528

[email protected]

Jim Carlo 214-693-1776 [email protected]

Linda Dunbar Huawei 972 543 5849 [email protected]

Bob Sultan Huawei

1700 Alma Drive, Suite 100 Plano, TX 75025 914 276 0375 [email protected]

Authors:

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Purpose

This presentation expresses our understanding of the 802.11u requirements and proposes solutions to fulfill some of the requirements.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Outline

• Basic Issues associated with Interworking• Our proposal to 802.11u Architecture

• Our proposal to Network Selection

• Our proposal to STA sharing

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Our View of Interworking Issues

External NetworkInformation

InterworkingCapability

Network Selection

Network Sharing

STA Sharing

Security and Protection

Battery Consumption

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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)

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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)

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Battery Consumption

• From:– R3M1: All proposals (whichever requirements they address) shall

describe how they minimize battery consumption for mobile devices.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Outline

• Basic Issues associated with Interworking

• Our proposal to 802.11u Architecture


• Our proposal to STA sharing

• Summarize

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

802.11 Components

DS

BSS1

BSS2

STA 1

STA 2

STA 4

STA3PortalAP

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

802.11u Components Proposal:A new ‘entrance’ entity Introduced

DS

BSS1

BSS2

STA 1

STA 2

STA 4

STA3PortalAP

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

General Model of Interworking Network Entities

DS

AP AP

Entrance Entrance

APAP

STA1 STA3 TOE

AS/proxy

GW

TOE

TOE

ASSSPN

SSPN

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Basic Interworking functions

DS

AP AP

Entrance Entrance

APAP

STA1 STA3 TOE

AS/proxy

GW

TOE

TOE

ASSSPN

SSPN

External network information service

Delivery service with constraints

External network Discovery and selection

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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).

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Outline



• Our proposal to Network Selection• Our proposal to STA sharing

• Summarize

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

802.11u Network Selection

• 802.11u Network Selection Should based on Interwoking Capability and related external network information.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Outline




• Our proposal to STA sharing• Summarize

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Requirements

DS External Network

Entrance

AP

STA

External Network

TOE1 TOE2

Entrance

AS1 AS2

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Virtual STA Approach

AP

V-STA1 V-STA2 STA2

DS

BSS

STA1

One STA may simulate as more than one virtual STAs (v-STAs).

Each v-STA has independent state machine.

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

The Creation of Visual STA

STA AP

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..

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

Communication based on virtual STA

Client#1 Client#2

Visrtal STA mapping

T-MAC#1 T-MAC#2

STA

TOE#1 TOE#2

Virtual STA mapping

T-MAC#2 T-MAC#1

AP

AS#1 AS#2

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

MSDUs from STA to AP

MAC(STA)

MAC(AP)

MA-UNITDATA.request

Replace TA from real MAC addressTo V-STA temporary address

MSDU transfer

MA-UNITDATA.indication

MA-UNITDATA-STATUS.indicationResume TA from V-STA temporary

Address to real MAC address

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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 addressTo V-STA temporary address

Resume RA from V-STA temporary Address to real MAC address

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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

September, 2005


doc.: IEEE 802.11-05/0850r4

Submission

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

Documents

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