US 10,567,203 B2 · Channel parameter estimation method and related apparatus

Abstract

The present disclosure provides example channel parameter estimation methods and related apparatuses. In one example method, a cable modem (CM) obtains a second data frame through a downlink channel between the CM and a cable modem termination system (CMTS). The second data frame is generated after a first data frame sent by the CMTS is modulated through the downlink channel, a zero-bit-loaded symbol of the first data frame includes no valid codeword, but includes a zero-bit-loaded NCP and an idle codeword identified by the zero-bit-loaded NCP, and the idle codeword includes a data sequence used for channel parameter estimation. The CM can estimate a channel parameter of the downlink channel based on a data sequence in an obtained zero-bit-loaded symbol of the second data frame and the data sequence in the zero-bit-loaded symbol of the first data frame.

Claims20

Dependent claims

A channel parameter estimation method, comprising:

obtaining, by a cable modem (CM), a second data frame through a downlink channel, wherein the second data frame is generated after a first data frame sent by a cable modem termination system (CMTS) is modulated through the downlink channel, wherein the downlink channel is a downlink channel between the CM and the CMTS, wherein the first data frame comprises a zero-bit-loaded symbol, wherein all codewords comprised in the zero-bit-loaded symbol of the first data frame are idle codewords, wherein a zero-bit-loaded next codeword pointer (NCP) and an idle codeword identified by the zero-bit-loaded NCP are set in the zero-bit-loaded symbol of the first data frame, and wherein a data sequence used for channel parameter estimation is filled in the idle codeword;
obtaining, by the CM, a zero-bit-loaded symbol of the second data frame;
and
estimating, by the CM, a channel parameter of the downlink channel based on the data sequence filled in the zero-bit-loaded symbol of the first data frame and a data sequence filled in the zero-bit-loaded symbol of the second data frame.

1 more element

A cable modem (CM), wherein the CM comprises a memory, a receiver, and at least one processor connected to the memory and the receiver, wherein wherein the memory comprises instructions that when executed by the at least one processor cause the CM to perform the following:

obtaining a second data frame through a downlink channel, wherein the second data frame is generated after a first data frame sent by a cable modem termination system (CMTS) is modulated through the downlink channel, wherein the downlink channel is a downlink channel between the CM and the CMTS, wherein the first data frame comprises a zero-bit-loaded symbol, wherein all codewords comprised in the zero-bit-loaded symbol of the first data frame are idle codewords, wherein a zero-bit-loaded next codeword pointer (NCP) and an idle codeword identified by the zero-bit-loaded NCP are set in the zero-bit-loaded symbol of the first data frame, and wherein a data sequence used for channel parameter estimation is filled in the idle codeword;
obtaining a zero-bit-loaded symbol of the second data frame;
and
estimating a channel parameter of the downlink channel based on the data sequence filled in the zero-bit-loaded symbol of the first data frame and a data sequence filled in the zero-bit-loaded symbol of the second data frame.

1 more element

Dependencies are inferred from the claim text.

Channel parameter estimation method and related apparatus

Life of this patent

Channel parameter estimation method and related apparatus

Life of this patent

Abstract

Claims20