Patent ID: 9088390
Filing Date: 2015-07-21
Classification: H04J,H04N

Abstract:
1. A system, comprising: a data-over-cable-service interface specification (DOCSIS) timing interface (DTI) server operable to generate one or more messages comprising a timing correction value; a plurality of communication devices each comprising a timing client coupled to the DTI server, the plurality of communication devices comprising at least a cable modem termination system and at least one edge quadrature amplitude modulator (EQAM); the plurality of communication device timing clients being operable to receive the one or more messages comprising a timing correction value from the DTI server; the timing client comprising a local time source, wherein the timing client is further operable to determine a time difference between the local time source and the timing correction value; and the timing client further operable to update the local time source, wherein the local time source is updated iteratively by no more than a first value over time to approach the timing correction value if the time difference meets a threshold of a second value.