Wireless communication device and wireless communication method

A wireless communication method comprising, by using a processor:

• generating a plurality of protocol data units (PDUs) to be transmitted to one or more use groups, each PDU has sequence information including a sequence number of a data unit and valid sequence information of corresponding use group of the one or more use groups, the valid sequence information being updated by specifying at least one sequence number corresponding to at least one data unit which is a target of retransmission to the corresponding use group on a basis of use group;
• and
• transmitting each of the plurality of PDUs to each use group of the one or more use groups, wherein the each of the plurality of PDUs includes the valid sequence information which has been updated to manage two or more non-sequential sequence numbers corresponding to the use group as virtual sequence numbers for retransmission to the corresponding use group, by deleting a sequence number of a data unit that is no longer to be the target of retransmission to the corresponding use group, and by adding a sequence number of a data unit that is newly set to be the target of retransmission to the corresponding use group.