Limiting Degrees of Freedom for Measurement Requests Month 2002 doc.: IEEE 802.11-02/xxxr0 May 2004 Limiting Degrees of Freedom for Measurement Requests Jon Edney, Nokia Corp. Edney John Doe, His Company

Problem Currently there are very few restrictions on: May 2004 Problem Currently there are very few restrictions on: Who may send a request What state should they be in To whom may the request be send What state must the receiver be in Purpose of submission is to define and limit the allow request paths Edney

May 2004 IEEE802.11h defines Action frames to be permitted in any state. This means that they can be sent at any time and to any station without restriction. It is even possible for an associated station to send an action frame to an IBSS station. Edney

May 2004 IEEE802.11k-Draft allows measurement requests to be sent to any destination (Caluse 11.7.6) but restricts the types of message that can be sent in infrastructure mode (Table 12): non-AP STA to non-AP STA requests not allowed Edney

Resulting Connectivity Table May 2004 Resulting Connectivity Table Edney

Level 1: IBSS or AP Centric May 2004 Level 1: IBSS or AP Centric Edney

May 2004 Level 2: IBSS or BSS Edney

Level 3: IBSS, BSS and Probe May 2004 Level 3: IBSS, BSS and Probe Edney

May 2004 Conclusion With no method to secure the link prior to association, the desired level for TGk is level 2 If a scheme to secure the link prior to association is introduced then the desired level for TGk is level 3. Edney