Methods and systems for performing analysis and correlation of DOCSIS 3.1 pre-equalization coefficients
AssigneeViavi Solutions Inc.
InventorMichael D. Gotwals
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Abstract
A method, apparatus and system for implementing pre-equalization equalizer tap analysis and correlation in a DOCSIS 3.1 network environment. The disclosed principles improve the pre-equalization analysis in the DOCSIS 3.1 environment by filtering out short distance reflections, which is required for the proper grouping and correlation of modems.
Claims20
A computer-implemented method performed by a test device configured to be connected to a cable modem termination system (CMTS) of a network transmitting signals using orthogonal frequency division multiple access (OFDMA), said method comprising:
- inputting pre-equalization tap data from a plurality of modems connected to the CMTS;
- filtering out short distance reflections from the pre-equalization tap data to generate a filtered pre-equalization tap data;
- and
- performing a pre-equalization tap analysis process on the filtered pre-equalization tap data, the pre-equalization tap analysis process creating simulated pre-equalization tap data and using the simulated pre-equalization tap data to isolate errors within the network.
A test device configured to be connected to a cable modem termination system (CMTS) of a network transmitting signals using orthogonal frequency division multiple access (OFDMA), said test device comprising:
- a storage device;
- and
- a processor executing program instructions stored in the storage device to:
- input pre-equalization tap data from a plurality of modems connected to the CMTS;
- filter out short distance reflections from the pre-equalization tap data to generate a filtered pre-equalization tap data;
- and
- perform a pre-equalization tap analysis process on the filtered pre-equalization tap data, the pre-equalization tap analysis process creating simulated pre-equalization tap data and using the simulated pre-equalization tap data to isolate errors within the network.
Dependencies are inferred from the claim text.