Patents Assigned to Ching-Chang LIAO
  • Publication number: 20110096684
    Abstract: A method and an apparatus for identifying an origin of captured DOCSIS upstream bursts are disclosed. Upstream bursts are captured without knowing their allocated time slots in advance. Information from an upstream channel descriptor is used to generate RF waveforms of upstream burst preambles, which arc then correlated to the captured upstream waveforms to determine the type of captured upstream bursts without having to decode the latter. Once the type of the captured upstream bursts is determined, information from the upstream channel descriptor is further used to demodulate and decode the upstream burst, so that CPE MAC addresses can be extracted. From the extracted CPE MAC addresses, the origin of the captured upstream bursts can be identified. The identification of origins of captured upstream bursts assists in locating faults in the cable network.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 28, 2011
    Applicants: Ching-Chang LIAO, JDS Uniphase Corporation
    Inventor: Ching-Chang Liao