1. 802.11u Proposal Date: 2005-09-21 Authors: September, 2005 July 2005
doc.: IEEE /0721r0
September, 2005
802.11u Proposal
Date:
Authors:
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Yao Zhonghui, Huawei
Cheng Hong, Panasonic

2. Proposals 802.11u Architecture Model Network Selection STA sharing
September, 2005
Proposals
802.11u Architecture Model
Network Selection
STA sharing
R3A1: A STA shall be able to authenticate with different SSPNs simultaneously, in order to gain simultaneous access to multiple Destination Networks.
Yao Zhonghui, Huawei

3. General Model of Interworking Network Entities
September, 2005
General Model of Interworking Network Entities AS
TOE
SSPN
AS/
proxy GW
TOE
SSPN
Entrance
Entrance DS AP AP AP AP
STA1
STA3
TOE
Yao Zhonghui, Huawei

4. Basic Interworking functions
September, 2005
Basic Interworking functions AS
TOE
SSPN
AS/
proxy GW
TOE
SSPN
External network information service
Entrance
Entrance
Delivery service with constraints DS AP AP AP AP
External network Discovery and selection
STA1
STA3
TOE
Yao Zhonghui, Huawei

5. New Architectural Services for Interworking
September, 2005
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).
Yao Zhonghui, Huawei

6. Network Selection Routine
September, 2005
Network Selection Routine
STA AP DS
Begin to SCAN
Message 1: Interworking Capability Information
Message 2: Network Discovery Request
External Network Information Request
Message 3: Network Discovery Response
External Network Information Response
Join a selected BSS
Yao Zhonghui, Huawei

7. Virtual STA Approach for Station Sharing
September, 2005
Virtual STA Approach for Station Sharing DS AP
One STA may simulate as more than one visual STAs (v-STAs).
Each v-STA has independent state machine.
V-STA1
V-STA2
STA2
BSS
STA1
Yao Zhonghui, Huawei

8. The Creation of Virtual STA
September, 2005
The Creation of Virtual STA
STA AP
Virtual STA
Create
Temporary address allocation request（V-STA instance No.）
Temporary address allocation response (V-STA instance No, T-MAC-ADDR）
Temporary address allocation
Authenticate
Association request
Association Response
Temporary Address Allocation can be also considered as a DSS..
Yao Zhonghui, Huawei

9. Communication based on Virtual STA
September, 2005
Communication based on Virtual STA
AS#1
AS#2
Client#1
Client#2
TOE#1
TOE#2
STA AP
Virtual STA mapping
Virtual STA mapping
T-MAC#1
T-MAC#2
T-MAC#2
T-MAC#1
Yao Zhonghui, Huawei

10. MSDUs from STA to AP September, 2005 MAC (STA) MAC (AP)
MA-UNITDATA.request
Replace TA from real MAC address
To V-STA temporary address
MSDU transfer
MA-UNITDATA-STATUS.indication
Resume TA from V-STA temporary
Address to real MAC address
MA-UNITDATA.indication
Yao Zhonghui, Huawei

11. MSDUs from AP to STA September, 2005 MAC (AP) MAC (STA)
MA-UNITDATA.request
Replace RA from real MAC address
To V-STA temporary address
MSDU transfer
MA-UNITDATA-STATUS.indication
Resume RA from V-STA temporary
Address to real MAC address
MA-UNITDATA.indication
Yao Zhonghui, Huawei

12. Summary Proposal to 802.11u Architecture Proposal to Network selection
September, 2005
Summary
Proposal to u Architecture
‘Entrance’ Entity, External network information service, Bearer service
Proposal to Network selection
Network selection based on interworking capability and external network information.
Proposal to STA sharing
Virtual STA approach
Yao Zhonghui, Huawei

13. References 11-05-0822-03-000u-tgu-requirements
September, 2005
References
u-tgu-requirements
u-suggested-tgu-functional-requirements
u-terms-and-definitions
u-draft-scope-scenarios-and-assumptions
Yao Zhonghui, Huawei