Methods and systems to synchronize network nodes

摘要

Methods and systems to synchronize to a remote node counting rate, symbol rate, and carrier frequency as functions of an estimated frequency offset and relationships between the remote node carrier frequency and counting rate, and between the remote node carrier frequency and symbol rate. The carrier frequency offset may be scaled in accordance with a ratio between the carrier frequency and the remote counting rate to synchronize the local counting rate with the remote counting rate, and/or scaled in accordance with a relationship between the carrier frequency and the remote symbol rate to synchronize the local receive path and/or transmit path sample rate with the remote symbol rate. The carrier frequency offset may be applied as compensation in the receive path and/or the transmit path. The remote and local nodes may correspond to a network coordinator and an existing node, respectively, in a Multimedia Over Coax (MoCA) environment.

主权项

1. A method, comprising:
estimating a carrier frequency offset associated with a received signal; synchronizing a local counting rate with a remote counting rate as a function of the estimated carrier frequency offset; and incrementing a local count at the synchronized local counting rate, wherein the synchronizing includes:
synchronizing the local counting rate as a function of the estimated carrier frequency offset and a relationship between a remote carrier frequency and the remote counting rate.