Airframe timestamping technique for point-to-point radio links
Abstract:
An example system comprising a first transceiver configured to receive a request airframe from a second transceiver over a wireless link, the request airframe including a first time indication indicating a first time TS1, a second time indication indicating a second time TS2 that the request airframe was received, generate a respond airframe and including a third time indication indicating a third time TS3 that the respond airframe is transmitted to the second transceiver, transmit the respond airframe to the second transceiver, provide a timestamp information request to second transceiver, receive a timestamp information response, the timestamp information response including a fourth time indication indicating a fourth time TS4, calculate a counter offset using the first time, second time, third time and fourth time as follows: counter ⁢ ⁢ offset = ( TS ⁢ ⁢ 1 + TS ⁢ ⁢ 4 - TS ⁢ ⁢ 3 - TS ⁢ ⁢ 2 ) 2 , calculate a phase offset based on the counter offset, and correct a phase of the first transceiver.
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