IEEE 802.11-19/0709r0 - Immediate and Delayed Feedback May 2019
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Date:
2019-05-01
May, 2019
Christian R. Berger (Marvell) et al
Slide 1
Authors:
Background
•
LRM Timestamp Feedback
•
Immediate (from this measurement phase)
•
Delayed (from the preceding measurement phase)
•
ToA Feedback Type
•
Phase shift feedback (average linear phase based)
•
Firstpath feedback (based on the first path ToA)
•
LMR Direction
•
RSTA-to-ISTA
•
ISTA-to-RSTA
Slide 2
Christian R. Berger (Marvell) et al
May, 2019
Current Draft
•
Ranging Parameters
•
One indication immediate/delayed
•
If ISTA-to-RSTA present assumed same as RSTA-to-ISTA
•
ToA feedback type (always immediate -> overwrites other indication)
•
Example
•
“Delayed” feedback
•
RSTA-to-ISTA feedback type “phase shift” -> immediate
•
ISTA-to-RSTA present, feedback type “Firstpath” -> delayed
Slide 3
Christian R. Berger (Marvell) et al
May, 2019
Options
•
Allow for delayed phase shift feedback?
•
If yes -> need two bits
•
Allow for RSTA-to-ISTA LMR be different from ISTA-to-RSTA?
•
If yes -> needs two bits
•
Otherwise fine as is
Slide 4
Christian R. Berger (Marvell) et al
May, 2019
Strawpoll I
•
Allow for delayed phase shift feedback?
•
Yes
•
No
•
Abstain
Slide 5
Christian R. Berger (Marvell) et al
May, 2019
Strawpoll II
•
Allow for RSTA-to-ISTA LMR be different from ISTA-to-RSTA?
•
Yes
•
No
•
Abstain
Slide 6
Christian R. Berger (Marvell) et al
May, 2019
doc.: IEEE 802.11-yy/xxxxr0
Month Year
John Doe, Some Company
Page
The document discusses immediate and delayed feedback mechanisms in IEEE 802.11-19/0709r0, focusing on parameters, feedback types, and ranging options. It explores variations in feedback direction and types, proposing options for phase shift feedback and distinguishing between RSTA-to-ISTA and ISTA-to-RSTA feedback. Strawpolls are conducted on allowing delayed phase shift feedback and differentiating LMR for RSTA-to-ISTA and ISTA-to-RSTA.
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Presentation Transcript
May, 2019 doc.: IEEE 802.11-19/0709r0 LMR Immediate and Delayed Feedback Date: 2019-05-01 Authors: Name Christian Berger Affiliations Marvell Address 5488 Marvell Ln, Santa Clara, CA 5488 Marvell Ln, Santa Clara, CA 5488 Marvell Ln, Santa Clara, CA Phone 408-222-9494 email crberger@marvell.com ngrandhe@marvell.com Niranjan Grandhe Marvell liwenchu@marvell.com Liwen Chu Marvell Submission Slide 1 Christian R. Berger (Marvell) et al
May, 2019 doc.: IEEE 802.11-19/0709r0 Background LRM Timestamp Feedback Immediate (from this measurement phase) Delayed (from the preceding measurement phase) ToA Feedback Type Phase shift feedback (average linear phase based) Firstpath feedback (based on the first path ToA) LMR Direction RSTA-to-ISTA ISTA-to-RSTA Submission Slide 2 Christian R. Berger (Marvell) et al
May, 2019 doc.: IEEE 802.11-19/0709r0 Current Draft Ranging Parameters One indication immediate/delayed If ISTA-to-RSTA present assumed same as RSTA-to-ISTA ToA feedback type (always immediate -> overwrites other indication) Example Delayed feedback RSTA-to-ISTA feedback type phase shift -> immediate ISTA-to-RSTA present, feedback type Firstpath -> delayed Submission Slide 3 Christian R. Berger (Marvell) et al
May, 2019 doc.: IEEE 802.11-19/0709r0 Options Allow for delayed phase shift feedback? If yes -> need two bits Allow for RSTA-to-ISTA LMR be different from ISTA-to-RSTA? If yes -> needs two bits Otherwise fine as is Submission Slide 4 Christian R. Berger (Marvell) et al
May, 2019 doc.: IEEE 802.11-19/0709r0 Strawpoll I Allow for delayed phase shift feedback? Yes No Abstain Submission Slide 5 Christian R. Berger (Marvell) et al
May, 2019 doc.: IEEE 802.11-19/0709r0 Strawpoll II Allow for RSTA-to-ISTA LMR be different from ISTA-to-RSTA? Yes No Abstain Submission Slide 6 Christian R. Berger (Marvell) et al
