Data Transmission Method, Terminal Device, and Network Device

A terminal device, comprising:

• a receiver, configured to:
• receive first control information sent by a network device, wherein the first control information instructs the terminal device to receive, on a first time-frequency resource, a first transport block sent by the network device at an nth time, wherein n is an integer greater than or equal to 0;
• receive the first transport block on the first time-frequency resource;
• and
• receive first indication information sent by the network device, wherein the first indication information indicates a first code block group (CBG) in the first transport block, and the first CBG corresponds to a second time-frequency resource during nth transmission of the first transport block.

The terminal device according to claim ii, wherein the first indication information and the second indication information are within a same time segment in time domain, the same time segment comprises one or more time units, each time unit of the one or more time units is a frame, a subframe, a slot, a mini-slot, or a symbol, and the same time segment is:

• a period during which the terminal device monitors downlink control information;
• a period during which the terminal device monitors downlink control information used to schedule data transmission;
• a period during which the terminal device monitors the first indication information;
• or
• a period during which the terminal device monitors the second indication information.

A network device, comprising:

• a transmitter, configured to:
• send, by the network device, first control information to a terminal device, wherein the first control information instructs the terminal device to receive, on a first time-frequency resource, a first transport block sent by the network device at an nth time, wherein n is an integer greater than or equal to 0;
• send, by the network device, the first transport block to the terminal device on the first time-frequency resource;
• and
• send, by the network device, first indication information to the terminal device, wherein the first indication information indicates a first code block group (CBG) in the first transport block, and the first CBG corresponds to a second time-frequency resource during nth transmission of the first transport block.