Patent ID: 8311171

Claim:
A method for distributing clock over wireless link, comprising: extracting, by a transmitter, clock frequency f 2 from a wired data connection feeding the transmitter with data clocked at the clock frequency f 2 ; estimating a first clock frequency error between the clock frequency f 2 and a clock frequency f 1 associated with a local clock of the transmitter; sending the first clock frequency error, as a message to a receiver, by the transmitter, over a wireless link; using a wireless transmitter interface comprising a modulator and transmitter radio, the wireless transmitter interface clocked at the clock frequency f 1 to send data from the transmitter to the receiver over the wireless link; reconstructing clock frequency f 1 by a wireless receiver interface comprising a de-modulator and receiver radio as a reconstructed clock frequency f 1 estimating a second clock frequency error between the reconstructed clock frequency f 1 and a clock frequency f 3 associated with a local clock of the receiver; calculating, by the receiver, the first clock frequency error plus the second clock frequency error, resulting in a third clock frequency error equal to the clock frequency f 2 minus the clock frequency f 3 ; adding the clock frequency f 3 to the third clock frequency error, by the receiver, resulting in a synthesized clock frequency f 2 ; and clocking a second wired data connection at the receiver, using the synthesized clock frequency f 2 .