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[STDS-802-11-TGBH] TGbh CID 140

All,

 

I had to do a bit of research on TGbh CID 140 (copied below, for your reference), to confirm/understand the results of the discussion on the Oct 10 call.

140

Julien Sevin

Technical

0

12.2.11.2

30

21

Please clarify the random generation procedure of the IRM MAC addresses such that a returning
non-AP STA cannot be identified by a third party from the TA it is using.

Indicate how the IRM MAC addresses are generated

 

From what I have been able to determine, Graham Smith presented this CID, and concluded that the resolution to CID 49, which re-writes the cited text, is covering this concern.  And, thus the intention is to resolve this CID with the same resolution as for CID 49.  That means, that CID 140 would be “Revised”, with the same text changes as for CID 49.

 

I bring this all up because the minutes recorded this CID as Rejected (because CID 49 had already covered it?).  But, I think that is technically not a correct resolution.

 

So, in the end, my suggestion (which I have captured in the comment resolution spreadsheet (11-23/1152) for now), is this, for CID 140:

 

CID 140:

Revised.

At Page 30.8 replace entire text in 12.2.11 with following

“To mitigate tracking and traffic analysis, a non-AP STA may randomly change its MAC address (see 4.5.4.10 (MAC privacy enhancements)).

This presents a problem for the network in that it is unable to identify a non-AP STA that previously associated and is not able to apply cached information from that previous association to the current association. The two mechanisms defined in 12.2.11 alleviate this problem.

The first mechanism, referred to as device ID, has the AP provide an identifier to the non-AP STA during association or PASN authentication that the non-AP STA can then report back to the AP during a future association or PASN authentication. The second mechanism, referred to as IRM, has the non-AP STA provide a random MAC address (different from the address it is using) to the AP during association or PASN authentication and then use that MAC address for the next association or PASN authentication.

The two mechanisms device ID and IRM, may be used concurrently.”

NOTE TO EDITOR: This is the same resolution as for CID 49.

 

If anyone has a concern with this resolution for this CID, please let me know.  Otherwise, it will appear in a motion during the Honolulu F2F as stated.

 

Thanks!  Mark

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