Patent ID: 11968638
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A system comprising:
a memory storage; and
a processing unit disposed in an Access Point (AP), the processing unit coupled to the memory storage, wherein the processing unit is operative to:
obtain a Timing Synchronization Function (TSF)-based time stamp, wherein the processing unit being operative to obtain the TSF-based time stamp comprises the processing unit being operative to:
perform Fine Timing Measurement (FTM) exchange with a client device, and
create the TSF-based time stamp comprising a time standard version of t1 and t4 from the FTM exchange, wherein t1 comprises a first Coordinated Universal Time (UTC) at sending of a FTM frame, and wherein t4 comprises a second UTC time at receipt of an acknowledgment frame from the client device acknowledging receipt of the FTM frame;

place the TSF-based time stamp in an Information Element (IE) that was intended to contain follow up information; and
transmit the IE.