Communication method and related apparatus

A communication method applied to a communication apparatus, the method comprising:

• receiving GD data packets and D pieces of first information from a first communication node,
• wherein the first communication node is a start node of a Dth hop in D hop transmission,
• wherein in the D hop transmission, a start node of a first hop is configured to encode G0 data packets and send encoded G0 data packets,
• wherein in the D hop transmission, an end node of a dth hop is configured to encode Gd data packets from a start node of a dth hop and send encoded Gd data packets,
• wherein the end node of the dth hop is a start node of a (d+1)th hop,
• wherein the D pieces of first information comprise D−1 pieces of first information that are in a one-to-one correspondence with D−1 previous hops in the D hop transmission and first information corresponding to the GD data packets,
• wherein first information corresponding to a dth hop in the D−1 hops comprises Gd pieces of first sub information,
• wherein the Gd pieces of first sub information are in a one-to-one correspondence with the Gd to-be-encoded data packets of the end node of the dth hop,
• wherein each of the Gd pieces of first sub information indicates an encoding coefficient group of a data packet corresponding to the first sub information in the Gd data packets relative to a plurality of to-be-encoded data packets of the start node of the dth hop,
• wherein the first information corresponding to the GD data packets comprises GD pieces of second sub information,
• wherein the GD pieces of second sub information are in a one-to-one correspondence with the GD data packets,
• wherein each of the GD pieces of second sub information indicates an encoding coefficient group of a data packet corresponding to the second sub information in the GD data packets relative to to-be-encoded data packets of the first communication node,
• wherein G0, Gd, GD, and D are all positive integers, d takes no value when D is 1, and d is selected from 1 to D−1 when D is greater than 1;
• encoding the GD data packets by using U encoding coefficient groups to obtain U data packets, wherein each of the U encoding coefficient groups comprises GD encoding coefficients, the U data packets are in a one-to-one correspondence with the U encoding coefficient groups, and U is a positive integer;
• and
• sending D+1 pieces of first information and the U data packets,
• wherein the D+1 pieces of first information comprise the D−1 pieces of first information, first information corresponding to the Dth hop, and first information corresponding to the U data packets,
• wherein the first information corresponding to the Dth hop comprises GD pieces of first sub information,
• wherein the GD pieces of first sub information are in a one-to-one correspondence with the GD data packets,
• wherein each of the GD pieces of first sub information indicates an encoding coefficient group of a corresponding data packet in the GD data packets relative to the to-be-encoded data packets of the first communication node,
• wherein the first information corresponding to the U data packets comprises U pieces of second sub information that are in a one-to-one correspondence with the U encoding coefficient groups, and
• wherein each of the U pieces of second sub information indicates a corresponding encoding coefficient group in the U encoding coefficient groups.