July 2010 doc.: IEEE 802.11-10/0879r1
IEEE P802.11
Wireless LANs
Date: 2010-07-14
Author(s):
Name / Company / Address / Phone / Email
Rene Purnadi / RIM / 5000 Riverside Drive
Irving, TX 75039, USA / +1 972 373 1739 /
Jarkko Kneckt / Nokia / Rakentajainrinne 6 02330 Espoo, Finland /
Stephen McCann / Research in Motion UK Ltd / 200 Bath Road, Slough, Berks, SL1 3XE, UK / +44 1753 667099 /
Ashish Shukla / Marvell / 1st Floor, Muttha Tower, Don Bosco Marg, Yerwada, Pune, India. / +91-20-40130016 /
Kazuyuki Sakoda / Sony Corporation / 5-1-12 Kita-Shinagawa, Shinagawa-ku, Tokyo, 141-0001 Japan / +81-3-5448-4018 /
Dan Harkins / Aruba Networks / 1322 Crossman avenue, Sunnyvale, CA, USA / +1 408 227 4500 /
Guido R. Hiertz / Philips / Riedel Communications GmbH & Co. KG, Uellendahler Str. 353, 42109 Wuppertal, Germany / +49-202-292-9987 /
Abstract
This submission suggests full adoption of the approved 802.11-10/0660r0 document to TG-s draft upon official issuance of TG-u draft 10.0 which the 802.11-10/0660r0 is based on.
Modify TGs 6.0-u 10.0 as follow based on the approved IEEE 802.11-10/660R0:
7.3.2.90 Interworking information element
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Bit 6 is the Emergency Services Reachable (ESR) field. It is set to 1 by the AP or mesh STA to indicate that Emergency Services are reachable through the AP or mesh STA; otherwise it is set to 0 indicating that it is unspecified whether Emergency Services are reachable, see 11.23.6. The ESR bit in the Interworking information element also serves as an emergency indicator. A mesh STA sets the ESR bit to 1 in Mesh Peering Open frame to gain access to emergency services through another mesh STA that is accessible for emergency service and sets the ESR bit to 0 to gain access to non-emergency services, see 11.23.6.
…..
Modify TG-s 6.0 as follow based on the approved IEEE 802.11-10/660R0 and TG-u draft 10.0:
7.3.2.90 Interworking information element
…..
Bit 67 is the Unauthenticated Emergency Service Accessible (UESA) field. When the AP or mesh STA sets it to 0, this field indicates that no unauthenticated emergency services are reachable through this AP or mesh STA. When set to 1, this field indicates that higher layer unauthenticated emergency services are reachable through this AP or mesh STA. A STA uses the Interworking information element with the UESA bit set to 1 to gain unauthenticated access to a BSS to access emergency services. A mesh STA uses the Interworking information element with the UESA bit set to 1 to gain unauthenticated access to another mesh STA to access emergency services. See 11.3.2.
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8. Security
Insert the following clause after the RSNA assumptions and constraints sub-clause
8.1.6 Emergency Service establishment in an RSN
An AP or mesh STA that supports RSNAs and has the ESR bit set to 1 and the UESA bit set to 1 in the Interworking element in Beacon and Probe Response frames, supports both RSNAs and Emergency Services associations (see 11.3.2.1) simultaneously.
NOTE—In an infrastructure BSS, STAs with emergency services association are advised to discard all group addressed frames they receive, as they do not posses the Group Key and will not be able to decrypt group addressed frames. In an RSNA enabled BSS having one or more STAs associated with an emergency services association, an AP should avoid transmitting unprotected group addressed frames to not disturb the operation of STAs in possession of credentials. One possible way of achieving this is to support Proxy-ARP in the AP, as defined in 11.22.13. In addition, it is recommended that an AP supporting emergency services association should also support DMS to convert group addressed frames to individually addressed frames and transmit them to STAs associated using the emergency services association. STAs using emergency services association could request for DMS if needed.
11.23.6 Interworking Procedures: Emergency Services Support
Change the third paragraph in 11.23.6 as follows:
[Note: this change is merely to sync with the latest changes in TG-u draft 10.0]
In an infrastructure BSS when the AP is located in a regulatory domain that requires location capabilities, the ESR field shall only be set to 1 and the Access Network Type shall notonly be set to Emergency Services Only Network (see Table 7-43bbk) unless location capability is enabled on the AP., if location capability is enabled on the AP. In Beacon and Probe Response frames, location capability is advertised when the Civic Location or Geo Location field in the Extended Capabilities Element is set to 1. Location capability is enabled when the Civic Location or Geo Location field in the Extended Capabilities Element is set to 1 in a Beacon or Probe response frame.
Submission page 1 Rene Purnadi, RIM