Data transmission method, apparatus, and system

An apparatus, comprises:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
• receive a radio resource control (RRC) message, wherein the RRC message indicates a hybrid automatic repeat request (HARQ) process with a disabled HARQ feedback;
• and
• receive a first transport block and a first identifier, wherein the first identifier indicates whether to switch the HARQ process of the first transport block from the HARQ process with the disabled HARQ feedback to a HARQ process with an enabled HARQ feedback.

An apparatus, comprises:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
• send a radio resource control (RRC) message, wherein the RRC message indicates a hybrid automatic repeat request (HARQ) process with a disabled HARQ feedback;
• and
• send a first transport block and a first identifier, wherein the first identifier indicates whether to switch the HARQ process of the first transport block from the HARQ process with the disabled HARQ feedback to a HARQ process with an enabled HARQ feedback.