PDCP duplication function determination and indication methods and devices, base station, and terminal

A Packet Data Convergence Protocol (PDCP) duplication function indication method, comprising:

• determining whether to configure a PDCP duplication function for a Radio Bearer (RB);
• in response to the PDCP duplication function being configured for the RB, determining a number of priority levels of data packets of the RB;
• according to the number of priority levels, determining whether data packets associated with each priority level are configured with the PDCP duplication function, so as to obtain a PDCP duplication function configuration information;
• and
• sending the PDCP duplication function configuration information to a user equipment (UE).

A Packet Data Convergence Protocol (PDCP) duplication function determination device, comprising:

• a receiving circuitry, adapted to receive a PDCP duplication function configuration information sent by a network, where the PDCP duplication function configuration information is obtained by determining whether data packets associated with each priority level of data packets of a Radio Bearer (RB) are configured with a PDCP duplication function based on a number of priority levels of the data packets of the RB in a case that the RB is configured with the PDCP duplication function;
• and
• a determining circuitry, adapted to determine whether each data packet of the RB is configured with the PDCP duplication function according to the PDCP duplication function configuration information;
• wherein the determining circuitry is further adapted to:
• determine a priority level of each data packet of the RB;
• and
• in response to the PDCP duplication function configuration information using a bitmap to indicate whether data packets associated with each priority level are configured with the PDCP duplication function, determine whether each data packet is configured with the PDCP duplication function according to the priority level of the data packet.