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Further Discussions about Frame Format Design for 802.11ai FILS Discovery Frame

Further Discussions about Frame Format Design for 802.11ai FILS Discovery Frame. Date: 2012-09-18. Authors:. Abstract.

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Further Discussions about Frame Format Design for 802.11ai FILS Discovery Frame

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  1. Further Discussions about Frame Format Design for 802.11ai FILS Discovery Frame • Date:2012-09-18 Authors: Lei Wang, InterDigital Communications

  2. Abstract • This document is intended to facilitate further discussions about the FILS Discovery Frame format design, through an analysis among the two options as identified in TGai Monday-Evening Scanning Ad Hoc meeting during 2012-September meeting: • Built-upon the 802.11ah short beacon, and • a new Extension frame with Type=0b11. Lei Wang, InterDigital Communications

  3. Conformance w/ TGai PAR & 5C Lei Wang, InterDigital Communications

  4. Lei Wang, InterDigital Communications Background • Two options of FD frame format design have been identified in TGai Scanning Ad Hoc : • Built-upon the 802.11ah short beacon frame • A newly designed Extension frame with Type=0b11. • Further work is needed to narrow down the FILS Discovery frame format design.

  5. Lei Wang, InterDigital Communications The focus of this Contribution • The focus of this contribution will be the FD frame format design, i.e., the MAC framing issues; • Another related but separate contribution, 12/1030, focuses on the discussions about the 11ai FILS Discovery frame detailed content design.

  6. Build-upon 802.11ah Short Beacon Frame • Proposed changes in 11ah short beacon Lei Wang, InterDigital Communications

  7. Build-upon 802.11ah Short Beacon Frame – con’t • FILS Discovery frame if built-upon 11ah short beacon Lei Wang, InterDigital Communications

  8. Designed as a New Extension Frame • FILS Discovery frame as a New Extension frame Lei Wang, InterDigital Communications

  9. Discussions • Built-upon 11ah Short Beacon frame • Save one Subtype code point • May cause concern of 11ah short beacon extensibility, for different uses of the reserved bit; • Need to get agreement from TGah • If the Group prefers to this way, we need to make a request to TGah . • Designed as a new Extension Frame • No requirement to get TGah agreement; • Use another Subtype code point, causing concerns about running out of Type/Subtype code points for future dot11 development Lei Wang, InterDigital Communications

  10. Discussions – con’t • Extensibility of MAC Frame Design • When FD frame shares the same Type/Subtype code point , the SB/FD indicator actually services as an “extended” Type/Subtype field; • An Example: MAC frame extensibility Design Lei Wang, InterDigital Communications

  11. Straw Polls about FILS Discovery Frame Format • Straw-Poll-1: Which of the following options do you prefer to being the starting point of the FILS Discovery frame format design? • a) 11ah short beacon • b) a new Extension frame with Type =0b11 • c) neither, need more info • Result a) b) c)____________ Lei Wang, InterDigital Communications

  12. Lei Wang, InterDigital Communications References: • IEEE Std 802.11™-2012 • Draft-P802.11ad_D9.0 • 11-11-1137-10-00ah-specification-framework-for-tgah • 11-11-1503-02-00ah-short-beacon • 11-12-0129-03-00ah-short-beacon • 11-12-1029-02-00ai-further-discussion-about-fils-discovery-frame-format • 11-12-1030-00-00ai-FILS-Discovery-Frame-Content-Discussions • 11-12-1130-01-00ai-paasive-scanning-ad-hoc-report

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