SYSTEM AND METHODS OF TIME SYNCHRONIZATION BETWEEN WIRELESSLY CONNECTED DEVICES

摘要

An access point (AP), station (STA) and method of providing synchronizing the STA are generally described. The STA may transmit to the AP a Fine Timing Measurement (FTM) request and/or trigger frame. The STA may capture a STA Time Synchronization Function (TSF) value of the time the FTM request/trigger frame is transmitted to the AP as determined by the STA. The AP may determine an AP TSF value of the time the of the FTM request/trigger frame was transmitted by the AP as determined by the AP and transmit at least part of the AP TSF time to the STA in a FTM response frame. The STA may compare the STA TSF value and the AP STA value and adjust the STA TSF dependent on the difference between the AP TSF value and the STA TSF value to synchronize to the AP TSF value.

主权项

1. An apparatus of a station (STA) comprising:
a transceiver arranged to communicate with a responding STA (RSTA); and processing circuitry arranged to:
configure the transceiver to transmit to the RSTA at least one of a Fine Timing Measurement (FTM) request or FTM trigger frame;capture a Time Synchronization Function (TSF) value of the STA, the TSF being of a time the at least one of the FTM request or FTM trigger frame is transmitted to the RSTA as determined by the STA;configure the transceiver to receive from the RSTA an FTM frame in response to the RSTA receiving the at least one of the FTM request or FTM trigger frame, the FTM frame comprising an RSTA TSF value of a time the at least one of the FTM request or FTM trigger frame was transmitted by the STA; andadjust the STA TSF dependent on the difference between the RSTA TSF value and the STA TSF value to synchronize to the RSTA TSF value.