Network Sharing Architecture July 2005 doc.: IEEE 802.11-05/0721r0 September, 2005 Network Sharing Architecture Authors: 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 <stuart.kerry@philips.com> 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 <patcom@ieee.org>. Yao Zhonghui, Huawei Cheng Hong, Panasonic

July 2005 doc.: IEEE 802.11-05/0721r0 September, 2005 Purpose This presentation proposes a network sharing architecture in one physical wireless LAN that are foundational for inter-working. Yao Zhonghui, Huawei Cheng Hong, Panasonic

September, 2005 The Multi-SSIDs Approach to support Multi-logical networks in one physical network @SSPN1 @SSPN2 @SSPN1 @SSPN2 SSID#1 SSID#2 SSID#1 SSID#2 BSS BSS#1 BSS#2 RF user @SSPN2 user @SSPN1 user @SSPN2 user @SSPN1 (1) Muli-SSIDs with muiti-BSSIDs (2) Muli-SSIDs with one BSSID Yao Zhonghui, Huawei

Multi-SSIDs approach vs. Requirements September, 2005 Multi-SSIDs approach vs. Requirements Multi-SSIDs with multi-BSSIDs approach has been excluded by the requirement notes: R1N3: Define functionality to support authentication with multiple SSPNs through a single AP. Notes: It’s not acceptable to require a separate “virtual” AP for each SSPN. Multi-SSIDs with one BSSID: We cannot do external network selection based on SSID because of scalability requirements from R1N1 How to create the relationship with SSPN? Dynamically or static configuration? .If we do external network based on NAI, SSID will become redundant. Yao Zhonghui, Huawei

No SSID approach September, 2005 @SSPN1 @SSPN2 BSS user @SSPN2 user It has the same effect as Multi-SSID with one BSS. Yao Zhonghui, Huawei

Why don’t we provide logical networks service based on ESS? September, 2005 Why don’t we provide logical networks service based on ESS? @SSPN1 @SSPN2 @SSPN1 @SSPN2 SSID#1 SSID#2 ESS ESS user @SSPN2 user @SSPN1 user @SSPN2 user @SSPN1 (1) No-SSID approach (2) Multi-SSIDs approach Yao Zhonghui, Huawei

The Definition of ESS ESS Definition: September, 2005 The Definition of ESS ESS Definition: A set of one or more interconnected basic service sets (BSSs) and intergrated local area networks (LANs) that appears as a single BSS to the logical link control (LLC) layer at any station associated with one of those BSSs. But we don’t know how to create the relationship between a STA and a ESS. STA only know BSS, when it roam to a new BSS, It don’t determine that current BSS is in the same ESS with the old BSS. So pre-authentication or re-authentication is required for a RSN. Owning the same SSID don’t hint that it is in the same ESS, SSID can only be used for distinguish logical network based the same BSS. Yao Zhonghui, Huawei

September, 2005 How to identify an ESS? SSID can only be used for distinguish logical network based on the same physical network. We can identify a physical network by a MAC address. For example, BSS is identified by BSSID that it’s a MAC address of AP. How to identify an ESS? We also use a MAC address, named as ESSID. ESS as an isolated local network A broadcast MAC address may be used to identify a isolated ESS. ESS as an AN The address of entrance that connects with external network Yao Zhonghui, Huawei

ESS identified by Entrance Address in an 802.11u network September, 2005 ESS identified by Entrance Address in an 802.11u network AS TOE SSPN AS/ proxy GW TOE SSPN Entrance Entrance ESSID#1 ESSID#2 DSM AP AP AP AP BSSID#1 BSSID#2 BSSID#3 BSSIS#4 STA1 STA3 TOE Yao Zhonghui, Huawei

Network Sharing Architecture September, 2005 Network Sharing Architecture SSPN (NAI#1) SSPN (NAI#2) SSPN (NAI#3) SSPN (NAI#1) SSPN (NAI#2) SSPN (NAI#3) SSID#1 SSID#2 SSID#3 SSID#4 ESS (ESSID#1) ESS (ESSID#2) ESS (ESSID#1) ESS (ESSID#2) BSS (BSSID#1) BSS (BSSID#1) (2) with SSID (1) No SSID Yao Zhonghui, Huawei

Network Sharing architecture is foundational for inter-working September, 2005 Network Sharing architecture is foundational for inter-working Network Selection means to determine a path for a STA from a specific BSS to a required External network. The Path is identified by USER-address: NAI: ESSID: BSSID. USER address can be a IP address or/and a MAC address A WLAN AN should support those different paths in a one system that can be independently controlled by related SSPN AS. This is related with SSPN interface requirements. One STA can get more than one IP address to support multi-flow. This is related with User Plane Cluster requirements. Yao Zhonghui, Huawei