Addressing signal propagation in high-multipath environments - Githubissues

CoraLibre / CoraLibre-android-sdk

CoraLibre-android-sdk fork of prestandard DP-3T to make compatible with the Google/Apple protocol

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Addressing signal propagation in high-multipath environments #45

Open yanosz opened 4 years ago

yanosz commented 4 years ago

Is:

Currently, the covid api as of Google suffers severe limiation in high multipath environments https://www.scss.tcd.ie/Doug.Leith/pubs/luas.pdf - https://www.heise.de/news/Corona-Warn-App-Studie-findet-Probleme-bei-der-Kontaktverfolgung-im-OePNV-4871811.html the RSSI by no means correlates with the actual distance. Furthermore, SARS-CoV-2 transmission in these enviroments is a subject of active reasearch. This regards for example ventilation systems and aerosols.

However, contact tracing apps are seen as a potential tool especially in the context of public transport.

Should:

CoraLibre should not rely on RSSI measurements in high-multipath environments.

Notes:

Implementation details are open research questions - however, there is research on that.
An intuitive way is to access positioning data (e.g. BL 5.1 direction finding, IEEE 802.11mc), but the privacy and technological implications are very challanging.
As the offical CWA appears to be a Google / Apple only thing, CoraLibre may step in. But ... I hardly believe that you get a single Euro out of their 68000000 € project budget :-(.

haitrec commented 4 years ago

We only focus on the contact tracing via bluetooth right now. Still thank you for your thoughts, as personally I'm very interested in the debate around the effectiveness of this technology and potential alternatives and improvements.