PATENT CLAIM ANALYSIS

Application Number: 15978213
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-02
Patent Classification: ["375", "296000"]

Abstract:
A method and apparatus for cancelling self-interference in a cable network implementing full duplex (FDX). A processor in a cable modem may obtain a frequency response of an echo channel for at least one sub-channel in an FDX band and calculate filter coefficients based on the frequency response, and an interference canceller cancels the self-interference in the downstream signal. The interference canceller includes filters in a digital domain to generate an interference cancellation signal from a reference signal. In another example, the processor may obtain frequency responses of an echo channel for all sub-channels in a FDX band, combine the frequency responses for the FDX band, and generate a channel impulse response for the FDX band from the combined frequency response. The interference canceller may then cancel the self-interference in the downstream signal in an analog domain based on the channel impulse response.

Claim (Index 12):
The cable modem of  claim 11 , wherein the processor is configured to perform inverse fast Fourier transform on the combined frequency response to obtain the channel impulse response, identify locations of main impulses in the channel impulse response using an amplitude threshold, and identify taps in a programmable analog filter in the interference canceller based on the locations of the main impulses.

Metadata:
- Claim Count in Document: 25.0
- Percentile: 93.0
- Lexical Diversity: 2.29851
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15648309', '15871485', '15938937', '15717285', '15907289']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4888686930614113
- 35 USC 102 Novelty (BERT): 0.521095676844768
- Combined Prediction Score: 0.492091391439747
- Mean Citation Score: 270.598854
- Max Citation Score: 309.94543
- Similarity Product: 243.26783913397668

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test