Transcript 802.11u proposal

November, 2005
doc.: IEEE 802.11-05/1168r0
802.11u Proposal
Authors:
Name
Company
Address
Phone
email
Zhonghui Yao
Liangyao Mo
Huawei
Huawei Longgang
Production Base, Shenzhen
518129 P.R.China
+86-75589650528
[email protected]
[email protected]
214-693-1776
[email protected]
972 543 5849
[email protected]
914 276 0375
[email protected]
Jim Carlo
Linda Dunbar
1700 Alma Drive, Suite
100
Plano, TX 75025
Bob Sultan
Vivek Gupta
Intel
Feng Li
ZTE
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Submission
Slide 1
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Purpose
This presentation expresses our understanding of the
802.11u requirements and proposes solutions to fulfill
some of the requirements.
Submission
Slide 2
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Outline
• Basic Issues associated with Inter-working
• Proposal for 802.11u Architecture
• Proposal for Network Selection
• Proposal for 802.21 MIH Requirements
Submission
Slide 3
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Inter-working Issues in 802.11u
External Network
Information
Interworking
Capability
Network Selection
Security
and Protection
Network Sharing
Battery Consumption
STA Sharing
Submission
Slide 4
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Network Selection
• Network Selection is about:
– Is this network my home network? If no, does it have the
capability of inter-working?
– R3N2: select the correct credentials when authenticating with a
Local Network.
• Network Selection is based on
– External Network Information
– Local Network Information
• Inter-working 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.
Submission
Slide 5
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Inter-working Capability
•
Some examples of Inter-working 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)
Submission
Slide 6
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
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
inter-working 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)
Submission
Slide 7
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Outline
• Basic Issues associated with Inter-working
• Proposal for 802.11u Architecture
• Proposal for Network Selection
• Proposal for 802.21 MIH Requirements
Submission
Slide 8
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
802.11 Components
BSS1
ESS
STA 1
STA 2
AP
DS
802.x LAN
AP
Portal
STA3
STA 4
BSS2
802.11 defines an integration service that supports MSDU delivery
between BSS and integrated LAN.
Portal is defined as the logical point at which the integration service is
provided.
Submission
Slide 9
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
802.11u Components Proposal:
A new ‘entrance’ entity Introduced
BSS1
External Network
STA 1
STA 2
Entrance
AP
DS
802.x LAN
AP
Portal
STA3
BSS2
STA 4
We define ‘entrance’ as the logical point at which the inter-working
service is provided.
An 802.11u network can inter-work with different external networks
by only one entrance or related different entrances.
Submission
Slide 10
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
General Model of Inter-working between
Network Entities
SSPN
AS
TOE
SSPN
AS/
proxy
GW
TOE
Entrance
Entrance
DSM
AP
AP
STA1
Submission
Slide 11
AP
AP
STA3
TOE
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Entrance Functionality
• Data Delivery
– All packets from STA are delivered to the corresponding network of
TOE by entrance;
– All packets to STA are delivered to the corresponding AP by entrance;
• Entrance can learn the association relationship from DS
– Data delivery according to the specified constraints (e.g. SSPN
authorization information) between AP and entrance;
• QoS specified constraints
• Security specified constraints
• 802.11 Services for MIH functionality
Submission
Slide 12
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Outline
• Basic Issues associated with Inter-working
• Proposal for 802.11u Architecture
• Proposal for Network Selection
• Proposal for 802.21 MIH Requirements
Submission
Slide 13
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Network Selection in 802.11
• Network Selection should be based on Inter-working
Capability and related external network information.
Submission
Slide 14
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Local Network Information
• Network Owner Identifier
• Inter-working Capability Information
– Interworking Capability Bit
• Supports inter-working or not
– MIH Bit
• MIH enabled or not
– Emergency call Bit
• Emergency call enabled or not
– Virtual STA bit
• Virtual STA access support or not
– ……
• Online enrollment methods
– e.g. UAM
Submission
Slide 15
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
External Network Information
• External Network Identifier
• Inter-working Type
– Intranet
– Internet
– 3GPP
•
•
•
•
3GPP scenarios 1 == Internet
3GPP scenarios 2
3GPP Scenarios 3
……
– 3GPP2
– UMA
• Other related information
– MIH network information
– Charge information
– Roaming related information, etc.
Submission
Slide 16
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Network Selection Routine
STA
AP
entrance
Begin to SCAN
Beacon (Message 1: Interworking Capability Information)
Probe request (Message 2: Network Discovery Request)
External Network Information Request
External Network Information Response
Probe response (Message 3: Network Discovery Response)
Join a selected BSS
Submission
Slide 17
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Outline
• Basic Issues associated with Inter-working
• Proposal to 802.11u Architecture
• Proposal to Network Selection
• Proposal to 802.21 MIH Requirements
Submission
Slide 18
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
MIH Architecture for 802.11
Layer 3 or higher Mobility Protocol (L3MP)
802.21 Scope
MIH
MIH
MIH
MIH
MIH_SME_SAP
MIH_L3MP_SAP
Function
Event Service
Command Service
Information Service
LSAP
MIH_LINK_SAP
LLC
MAC
PHY_SAP
PHY
Submission
MLME_PLME_SAP
PLME
Slide 19
PLME_SAP
New items in
scope of 802.21
MLME
MLME_SAP
MAC_SAP
SME
or
NME
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Proposed Link Layer Events
No
Event Type
Event Name
Description
1
State Change
Link Up
L2 Connection established
2
State Change
Link Down
L2 Connection is broken
3
Predictive
Link Going Down
L2 connection breakdown imminent
4
State Change
Link Detected
New L2 link has been found
5
State Change
Link Parameters Change
Change in specific link parameters has crossed prespecified thresholds (link Speed/Qos/ Quality
metrics)
6
Administrative
Link Event Rollback
Event rollback
7
Link Transmission
Link SDU Transmit Success
Improve handover performance through local
feedback as opposed to waiting for end-to-end
notifications
8
Link Transmission
Link SDU Transmit Failure
Error in transmitting SDU corresponding to a
specific PDU
9
Link Synchronous
Link Handover Imminent
L2 intra-technology handover imminent (subnet
change). Notify Handover information without
change in link state)
10
Link Synchronous
Link Handover Complete
Notify handover state
Submission
Slide 20
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Information Elements 1 of 2
Media Independent Neighbor Reports
Information Element
Name
Description
Media
Types
Comments
Inter Technology Neighbor Reports
List of networks available
List all network types that are
available given a location or POA
information
All
E.g., 802.3, 802.11, 802.16, GSM, GPRS/EDGE
networks
Location of PoA
Geographical Location, Civic
address, PoA ID
All
E.g. GML format
for LBS or network management purpose
Operator
Name of the network provider
All
E.g. Vodafone, Orange. Could be equivalent to
Network ID.
IP Version
Indicates the version Internet
Protocol used
All
IPv4 and/or IPv6
Roaming Partners
List of direct roaming agreements
Cost
Indication of costs for
service/network usage
All
E.g, Free/Not free or (flat rate, hourly, day or
weekly rate)
Security
Link layer security supported
All
Technology specific, e.g. WEP in 802.11, 802.11i,
PKM in 802.16, etc.
Quality of Service
Link QoS parameters
All
E.g. QoS Classes, Traffic specifications
Submission
Slide 21
E.g. in form of NAIs or MCC+MNC
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Information Elements 2 of 2
Higher Layer Services Information (HLSI)
Name of Information Element
Description
Comments
Higher Layer Services Supported
IMS Access (MMS, SMS, Presence,
Instant Message, Push-to-Talk, …)
Indication whether specific service is supported
or not
ISP Supported
Internet Service Provider that provides the
access to internet
Location based services
List of Local services that are available given a
location
VPN Supported
Network enables VPN services
MIP Supported
Network enables MIP version and services
Use of NAT
NAT is used for internet access
Submission
Slide 22
802.21 specific methods, e.g., a new flag,
query/response
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Summary
• Basic Issues
– Network Selection, Network sharing, STA sharing, etc.
• Proposal for 802.11u Architecture
– ‘Entrance’ Entity, External network information service, Delivery
service with the specified constraints
• Proposal for Network Selection
– Network selection based on inter-working capability and external
network information.
• Proposal for 802.21 MIH Requirements
Submission
Slide 23
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
References
•
•
•
•
•
•
11-05-0840-04-000u-802.11u-proposal
11-05-1006-00-000u-initial-network-selection-consept
11-05-0898-01-000u-service-access-contexts
11-05-0971-00-000u-redefining-ssid
11-05-0822-03-000u-tgu-requirements
11-05-0279-15-000u-suggested-tgu-functionalrequirements
• 11-05-0333-05-000u-terms-and-definitions
• 11-05-0355-04-000u-draft-scope-scenarios-andassumptions
Submission
Slide 24
Yao Zhonghui, Huawei
November, 2005
doc.: IEEE 802.11-05/1168r0
Backup
Submission
Slide 25
Yao Zhonghui, Huawei