NetTools Consulting, Tamil Nadu, India
Review Article
Scheduling Proximity Data Exchange for Contact Tracing
Author(s): Hari TS Narayanan* and Spatika Narayanan
Contact tracing is one of the popular applications of proximity data. A contact tracing system collects, stores, and
computes proximity distance and duration to identify the contacts for contagious diseases like SARS and Ebola.
Most of the currently deployed contact tracing solutions is built with Bluetooth Low Energy (BLE). The BLE in
smartphones is used for exchanging proximity data. This exchange of proximity data could be either intrusive or
non-intrusive. In intrusive exchange, the data exchange takes place after establishing a BLE connection to another
smartphone. In non-intrusive exchange, periodic broadcast messages from a smartphone are scanned for proximity
data. Both methods operate under technology specific and environmental constraints. Irrespective of the method,
there can be collisions while accessing the media. Collision impedes data exchange and r.. View more»