Method and device for generating protocol data unit (PDU) packet

A device for generating a protocol data unit (PDU) packet, comprising:

• a processor;
• and
• a memory for storing a processor-executable instruction, wherein
• the processor is configured to:
• acquire a service data unit (SDU) packet;
• process the SDU packet according to a size parameter;
• and
• generate a packet header and a data section of a PDU packet according to a processing result, the packet header and the data section constituting the PDU packet, wherein the packet header omits a framing indication (FI) field and a resegmentation flag (RF) field and comprises a preset field, and the preset field comprises a target field that is newly added, a field length of the target field that is newly added being smaller than a total length of the FI field and the RF field,
• wherein in generating the packet header and the data section of the PDU packet according to the processing result, processor is further configured to:
• in response to that the data section does not comprise an SDU segment, generate the packet header that comprises the target field and omits a segmentation offset (SO) field.