Data Processing Method and Apparatus

A data processing apparatus, comprising:

• a receiver configured to receive a first physical layer coding data block flow and a second physical layer coding data block flow;
• a processor coupled to the receiver and configured to:
• obtain a first data flow according to the first physical layer coding data block flow and the second physical layer coding data block flow that are received by the receiver, wherein the first data flow comprises data blocks from the first physical layer coding data block flow and data blocks from the second physical layer coding data block flow, and wherein a ratio of a rate of the data blocks that are from the first physical layer coding data block flow and are in the first data flow to a rate of the data blocks that are from the second physical layer coding data block flow and are in the first data flow is equal to a ratio of a rate of the first physical layer coding data block flow to a rate of the second physical layer coding data block flow;
• generate multiple subframe headers, wherein the multiple subframe headers are obtained according to a frame header, wherein the frame header comprises multiple payload fields, wherein the multiple subframe headers comprise the multiple payload fields, wherein each subframe header comprises only one payload field of the multiple payload fields and a subframe header marker field used to indicate whether the only one payload field is a first subframe header in the multiple subframe headers, wherein each subframe header is one or more data blocks, wherein the multiple subframe headers further comprise multiple start marker fields, wherein each subframe header comprises only one beginning flag field, wherein the only one beginning flag field is used to indicate a start of a subframe header in which the only one beginning flag field is located, and wherein the only one beginning flag field is a data block;
• obtain a second data flow according to the first data flow and the multiple subframe headers, wherein the second data flow comprises the first data flow and the multiple subframe headers;
• and
• distribute data blocks in the second data flow to a first physical medium dependent (PMD) sublayer circuit and to a second PMD sublayer circuit, so as to obtain a first PMD sublayer data flow and a second PMD sublayer data flow, wherein the first PMD sublayer circuit corresponds to the first PMD sublayer data flow, and wherein the second PMD sublayer circuit corresponds to the second PMD sublayer data flow.