Data processing method, information configuration method, terminal, and network device

An information configuration method, applied to a network device and comprising:

• sending configuration information of a packet data convergence protocol (PDCP) data duplication function of a first radio bearer (RB) to a terminal;
• and
• sending indication information to the terminal by using preset signaling, the indication information being used to indicate a transmission path that needs to be deactivated;
• wherein
• the PDCP data duplication function corresponds to at least three transmission paths.

A terminal, comprising:

• a memory, a processor, and a program that is stored in the memory and executable on the processor, wherein the program, when executed by the processor, causes a packet data convergence protocol (PDCP) entity of the terminal to perform:
• determining at least one first transmission path that is in a transmission path set currently in an activated state and that needs to be changed from the activated state to a deactivated state;
• and
• instructing a radio link control (RLC) entity corresponding to the first transmission path to discard duplicated data, in a case where the at least one first transmission path is not all transmission paths in the transmission path set;
• wherein
• the transmission path set comprises at least one transmission path.