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Phase Roll Based TOA in Passive Location Ranging

Phase Roll Based TOA in Passive Location Ranging. Authors:. Date: 2019-01-16. Passive Location with Phase Roll Based TOA Reporting - ISTA PR-TOA reporting. Corrected PR-TOA, calculated by the RSTA using the PR-TOA reported by the ISTA and the assumption of reciprocity.

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Phase Roll Based TOA in Passive Location Ranging

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  1. Phase Roll Based TOA in Passive Location Ranging Authors: • Date:2019-01-16 Erik Lindskog, Samsung

  2. Erik Lindskog, Samsung Passive Location with Phase Roll Based TOA Reporting - ISTA PR-TOA reporting Corrected PR-TOA, calculated by the RSTA using the PR-TOA reported by the ISTA and the assumption of reciprocity Phase roll based TOA reported by the ISTA to the RSTA RSTA Phase roll based TOA, PR-TOA, measured by the ISTA Broadcasting of corrected PR-TOA from the RSTA to the passive station. ISTA Passive Station (PSTA)

  3. Erik Lindskog, Samsung Passive Location Ranging Sequence with PR-TOA – ISTA PR-TOA reporting Calculation of (last) ISTAs PR-TOA correction Adjustment of ISTAs PR-TOAs rSTA to iSTA LMR LCI, DL LMR iSTA to rSTA LMR TF UL NDP TF UL LMR UL NDP TF DL NDPA Poll TF DL NDP RSTA RSTA corrected ISTA PR-TOAs (No change in format) iSTA to rSTA LMR UL NDP PR ISTA 1 iSTA to rSTA LMR UL NDP PR ISTA 2 ISTA PR-TOAs - Indicate PR-TOA feedback RSTA starts computing the PR-TOA correction for the last ISTA ISTAs measures PR-TOAs

  4. Erik Lindskog, Samsung ISTA PR-TOA Reporting Benefits in Passive Location Ranging • Enables simple design of passive location ISTAs • Simplifies immediate feedback for ISTAs • The PR-TOA may be something that more or less already is calculated in the PHY of a ‘regular’ Wi-Fi modem. Thus immediate ISTA feedback may be greatly simplified. • With a ‘powerful enough’ RSTA that, in addition to calculating its on TOAs, is capable to immediately turn around and broadcast the ISTAs corrected PR-TOAs, we have enabled immediate feedback of all time-stamps.

  5. Erik Lindskog, Samsung Thank You!

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