IEEE 802.11-18/1272r1: Angular Measurements Feedback in LMR
Explore the feedback on angular measurements in Location Measurement Report (LMR) for IEEE 802.11-18/1272r1. The document discusses the implementation of Angle-of-Arrival (AoA) and the importance of sharing AoA measurements between Access Points (APs) and Stations (STAs). It also covers the format for AoA results field, addition to Location Civic Report, and the need for a reference orientation for accurate angular measurements.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
July, 2018 doc.: IEEE 802.11-18/1272r1 LMR AoA Feedback Date: 2018-07-10 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
July, 2018 doc.: IEEE 802.11-18/1272r1 Background Angular in Tgaz Subsection for sub 7 GHz angular removed from SFD Now only specific support for AoD/AoA in DMG/eDMG Existing Angular Sub 7 GHz AoA already implemented using proprietary receive array processing Does not need specific protocol support Usually at APs, can be used in network-centric localization Would be beneficial also in client-centric localization There is a need to share AoA Measurements from AP with STA RSTA-ISTA LMR is an obvious place to feed back per packet (NDP) AoA measurements Submission Slide 2 Christian R. Berger, Marvell et al
July, 2018 doc.: IEEE 802.11-18/1272r1 AoA Feeback in LMR Angle-of-Arrival (AoA) Can be measured on each NDP Could be fed back in LMR Fine Timing Measurement Report field format Public Action Dialog Token ToD Error ToA Error Category ToD ToA Octets: 1 1 1 6 6 2 2 Secure LTF Parameters (optional) NGP CSI Information (optional) Azimuth Angle (optional) Elevation Angle (optional) Azimuth Error (optional) Elevation Error (optional) Format 2 octets Azimuth/Elevation 2 octets for accuracy Octets: 2 2 2 2 variable variable Submission Slide 3 Christian R. Berger, Marvell et al
July, 2018 doc.: IEEE 802.11-18/1272r1 Format New or Reuse? Alternative Format Reuse AoA Results Field Created for DMG/eDMG 5 octets AoA Results Field B0 B10 B11 B21 B22 B28 B29 B35 B36 B39 AoA Azimuth Accuracy AoA Elevation Accuracy AoA Azimuth AoA Elevation Reserved Bits: 11 11 7 7 4 Submission Slide 4 Christian R. Berger, Marvell et al
July, 2018 doc.: IEEE 802.11-18/1272r1 Addition to Location Civic Report Angular Measurements Need a Reference Orientation True North Spherical coordinates can be transformed/rotated to include orientation Many receive arrays only measure partial spherical coordinates, e.g., azimuth only Or accuracy is not uniform Easier to let AP specify it s own coordinate system Submission Slide 5 Christian R. Berger, Marvell et al
July, 2018 doc.: IEEE 802.11-18/1272r1 Strawpoll 1 Do you support to include optional Angle-of-Arrival (AoA) feedback in the Fine Timing Measurement Report field of the VHTz and HEz LMR (RSTA- ISTA)? Yes: No: Abstain: Submission Slide 6 Christian R. Berger, Marvell et al
July, 2018 doc.: IEEE 802.11-18/1272r1 Motion 1 We agree to include optional Angle-of-Arrival (AoA) feedback in the Fine Timing Measurement Report field of the VHTz and HEz LMR (RSTA-ISTA) Yes: No: Abstain: Submission Slide 7 Christian R. Berger, Marvell et al
