\section{Fine Timing Measurement}
\label{sec:ftm}


-New IEEE 802.11mc standard to measure round trip time from client to access point.
-Theory, protocol.
-Expected error behavior 


FTM defines a protocol to measure the round trip time between an initiator and a responder, e.g. a smartphone based client and access point.
For data privacy reasons the responder is always passive and only the initiator can trigger time measurements.