Patent ID: 6985437
Filing Date: 2006-01-10
Classification: H04L

Abstract:
1. In a data-over-cable system, a method for optimizing data throughput on an upstream channel at a target packet error ratio, the upstream channel providing data transmissions from a plurality of cable modems to a cable modem termination system, the method comprising the steps of: ascertaining a signal-to-noise ratio on the upstream channel; determining parameters for data transmissions by the cable modems on the upstream channel, wherein the determined parameters are associated with the signal-to-noise ratio and the target packet error ratio; negotiating the use of the determined parameters in the upstream channel; recognizing a substantial variance in the signal to noise ratio; ascertaining whether the variance in the signal-to-noise ratio is consistent over a given number of transmission cycles, and if so, determining new parameters for data transmission on the upstream channel, wherein the new parameters are associated with the variance in the signal-to-noise ratio; and negotiating the use of the new parameters in the upstream channel.