Data transmission method and apparatus

A data transmission method comprising:

• sending, by a transmit device, a plurality of pieces of data through multicast, wherein different data in the plurality of pieces of data occupies different transmission resources;
• receiving, by the transmit device, a first feedback message, wherein the first feedback message indicates whether a first receive device correctly receives the plurality of pieces of data;
• performing, by the transmit device, network encoding transmission based on the first feedback message;
• and
• receiving, by the transmit device, a second feedback message on a second feedback resource, wherein the second feedback message indicates whether a second receive device correctly receives the plurality of pieces of data, the first feedback message is different from the second feedback message, and a first feedback resource is different from the second feedback resource.

A communication apparatus comprising:

• a memory comprising processor-executable instructions;
• and
• a processor in communication with the memory, wherein the processor executes the processor-executable instructions to facilitate the apparatus to:
• obtain a plurality of pieces of data, wherein different data in the plurality of pieces of data occupies different transmission resources, and determine a first feedback message based on the plurality of pieces of data, wherein the first feedback message indicates whether a first receive device correctly receives the plurality of pieces of data;
• output the first feedback message;
• determine a first feedback resource based on feedback content of the first feedback message, the first feedback resource is comprised in a feedback resource set, and different first feedback resources in the feedback resource set correspond to different feedback content;
• and
• output the first feedback message on the first feedback resource.