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IEEE 802.11 Element Extension for TGai: Recommendations for Element ID Assignment Process

Discussing steps TGai could take due to the shortage of Element IDs in the IEEE 802.11 standard, proposing options to handle the situation effectively. Includes support for single octet Element ID extension and recommendations for Element options in Beacon frames. Also covers FILS elements and Element ID allocation process.

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IEEE 802.11 Element Extension for TGai: Recommendations for Element ID Assignment Process

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  1. FILS element assignment Authors: • Date:2014-11-06 Jouni Malinen, Qualcomm

  2. Abstract • IEEE 802.11 standard is running out of Element IDs. This document discusses possible steps TGai could take in this process. Jouni Malinen, Qualcomm

  3. Element extension (TGmc and WG) • Discussion showed clear support for Option 1 (single octet Element ID extension) (see 14/1353r3) • expected to pass motion Thursday PM2 • WG discussion on Friday on policy for remaining Element IDs • may affect how ANA handles pending TGai request • Only a very small number of IDs remain available • Would be helpful for 802.11 in general to use the shortest Element option in Beacon (and Beacon-like) frames (and use extended version for frames that are not as critical as far as length is concerned) Jouni Malinen, Qualcomm

  4. FILS elements • Beacon frame • CAG Number element • FILS Indication element • AP-CSN element • Differentiated Initial Link Setup element • FILS Public Key Indicatorelement • note: missing from Table 8-85 • FILS Discovery frame • FILS Indication element Jouni Malinen, Qualcomm

  5. FILS elements • Only in other frames • FILS Request Parameters element • FILS Key Confirmation element • FILS Session element • FILS Public Key element • FILS HLP Container element • FILS IP Address Assignment element • Key Delivery element • FILS Wrapped Data element • Fragment element Jouni Malinen, Qualcomm

  6. TGai request to ANA • Could provide more information to ANA on the specific need (elements included in Beacon-like frames) to help allocation process • Need for this depends on the WG discussion on Friday • Should be fine for elements that are not included in Beacon or FILS Discovery frames to use the new extension format (one extra octet per element) Jouni Malinen, Qualcomm

  7. Motion • Move to provide following additional information to the ANA on TGai Element ID assignment request: • TGai preference is to get “legacy elements” (no extension octet) for following new elements: • CAG Number element • FILS Indication element • AP-CSN element • Differentiated Initial Link Setup element • FILS Public Key Indicator element • Extended Element (one octet extension) is acceptable for the other requested Element IDs Jouni Malinen, Qualcomm

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