Data mapping method, data demapping method, and related device

A method applied to a sending device, the method comprising:

• obtaining service data;
• mapping the service data into a payload area of a service frame, wherein:
• the service frame comprises an overhead area and the payload area;
• the overhead area of the service frame comprises a plurality of frame header indication overhead fields;
• each of the plurality of frame header indication overhead fields comprises a first field;
• and
• the first field represents a ranking of each frame header indication overhead field in the plurality of frame header indication overhead fields;
• mapping the service frame into a payload area of a data frame;
• and
• sending the data frame.

A method applied to a receiving device, the method comprising:

• receiving a data frame;
• demapping a service frame from a payload area of the data frame, wherein:
• the service frame comprises an overhead area and a payload area;
• the overhead area of the service frame comprises a plurality of frame header indication overhead fields;
• each of the plurality of frame header indication overhead fields comprises a first field;
• and
• the first field represents a ranking of each frame header indication overhead field in the plurality of frame header indication overhead fields;
• and
• demapping service data from the payload area of the service frame.

A device, comprising:

• at least one processor;
• a memory with instructions stored thereon, wherein the instructions, when executed by the at least one processor, enable the device to:
• obtain service data,
• map the service data into a payload area of a service frame, wherein:
• the service frame comprises an overhead area and the payload area,
• the overhead area of the service frame comprises a plurality of frame header indication overhead fields,
• each of the plurality of frame header indication overhead fields comprises a first field, and
• the first field represents a ranking of each frame header indication overhead field in the plurality of frame header indication overhead fields, and
• map the service frame into a payload area of a data frame;
• and
• a transceiver configured to send the data frame.