Method for transmitting MAC PDUs and related product

A terminal device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory, and the processor, when executing the one or more programs, is configured to:

• receive a data packet from a transmitting end through the communication interface, wherein the data packet comprises a medium access control layer (MAC) protocol data unit (PDU), the MAC PDU comprises multiple MAC subPDUs, and at least one MAC subPDU of the multiple MAC subPDUs comprises a MAC sub-header;
• wherein the MAC sub-header comprises a first information field, and the first information field is configured to indicate whether the MAC sub-header comprises a length indication L field;
• wherein the first information field is configured to indicate that the MAC sub-header does not comprise the L field, and a format of the MAC sub-header is the first information field/a second information field/a logical channel identification (LCID) field, or
• the format of the MAC sub-header is the first information field/the second information field/a third information field;
• wherein the second information field is configured to indicate the LCID field or the third information field, the third information field is configured to indicate multiple consecutive MAC subPDUs after the MAC sub-header, and each MAC subPDU of the multiple consecutive MAC subPDUs, except the MAC subPDU to which the MAC sub-header belongs, does not comprise a sub-header.

A network device, comprising a processor, a memory, a transceiver, and one or more programs, wherein the one or more programs are stored in the memory, and the processor, when executing the one or more programs, is configured to:

• transmit data package through the transceiver, wherein the data packet comprises a medium access control layer (MAC) protocol data unit (PDU), the MAC PDU comprises multiple MAC subPDUs, and at least one MAC subPDU of the multiple MAC subPDUs comprises a MAC sub-header;
• wherein the MAC sub-header comprises a first information field, and the first information field is configured to indicate whether the MAC sub-header comprises a length indication L field;
• wherein the first information field is configured to indicate that the MAC sub-header does not comprise the L field, and a format of the MAC sub-header is the first information field/a second information field/a logical channel identification (LCID) field, or
• the format of the MAC sub-header is the first information field/the second information field/a third information field;
• wherein the second information field is configured to indicate the LCID field or the third information field, the third information field is configured to indicate multiple consecutive MAC subPDUs after the MAC sub-header, and each MAC subPDU of the multiple consecutive MAC subPDUs, except the MAC subPDU to which the MAC sub-header belongs, does not comprise a sub-header.