Wireless communication method and apparatus for improving robustness of data transmission

An apparatus, comprising:

• one or more processors;
• a memory coupled to the one or more processors, wherein the memory stores a program to be executed by the one or more processors, the program including instructions for:
• receiving, in a second cell, first indication information from a terminal device, wherein the first indication information is used to indicate that first data is incorrectly received, by the terminal device, in a first cell, or is used to request, by the terminal device, transmission of the first data in the second cell, the first cell is a first primary cell, and the second cell is a secondary cell or a second primary cell;
• and
• sending, in the second cell, the first data to the terminal device.

An apparatus, comprising:

• one or more processors;
• one or more memories coupled to the one or more processors, wherein the non-transitory memory stores a program to be executed by the one or more processors, the program including instructions for:
• sending, in a first cell, first data to a terminal device, wherein the first cell is a first primary cell;
• receiving, in a second cell, third indication information from the terminal device, wherein the second cell is a secondary cell or a second primary cell, and the third indication information is used to indicate that the first data is correctly received in the first cell, or is used to request to stop transmission of the first data in the second cell;
• and
• stopping sending the first data in the second cell.