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Apparatus and methods for incorporating bandwidth forecasting and dynamic bandwidth allocation into a broadband communication system

  • US 7,920,594 B2
  • Filed: 02/19/2009
  • Issued: 04/05/2011
  • Est. Priority Date: 05/19/2000
  • Status: Expired due to Fees
First Claim
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1. A cable modem, comprising:

  • a media access control (MAC) layer;

    communication components coupled to the MAC layer operative for communicating digital data over a shared access communication medium;

    a statistics collector coupled to the MAC layer for collecting statistical information relating to traffic in the media access control (MAC) layer;

    a lookahead scheduler coupled to the MAC layer operative for forecasting schedule transmission opportunities on a given channel, wherein the lookahead scheduler is configured to assign a forecasting function to a user based on whether or not a cycle has been detected via an autocorrelation function and a identifier function, and wherein the autocorrelation function identifies elements in a time series which are influential on a current observation of that same series and the identifier function identifies possible cycles of the time series by identifying local maxima output by the autocorrelation function; and

    a predictor responsive to the statistical information collected by the statistics collector, for generating prediction signals representative of future bandwidth requirements.

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