Radio communication device and radio communication method

A radio communication device that transmits and receives protocol data units in a packet data convergence protocol layer located above a radio link control layer, the radio communication device comprising:

• a processor that generates a status report indicating reception status of the protocol data units in the packet data convergence protocol layer;
• and
• a transmitter that transmits the status report in the packet data convergence protocol layer to a destination radio communication device,
• wherein if a size of a protocol data unit that includes the status report exceeds a maximum size of the protocol data unit, the processor splits the status report and generates status report pieces,
• wherein a sequence number length of the protocol data units in the packet data convergence protocol layer is extended above 15 bits, and
• the transmitter transmits to the destination radio communication device the protocol data units that include the status report pieces.

A radio communication method that transmits and receives protocol data units in a packet data convergence protocol layer located above a radio link control layer, the radio communication method comprising:

• generating a status report that indicates reception status of the protocol data units in the packet data convergence protocol layer;
• and
• transmitting the status report in the packet data convergence protocol layer to a destination radio communication device, wherein
• generating the status report includes, if the size of the protocol data unit that includes the status report exceeds a maximum size of the protocol data unit, splitting the status report to generate status report pieces, and
• transmitting the status report includes transmitting to the destination radio communication device the protocol data units that include the status report pieces,
• wherein a sequence number length of the protocol data units in the packet data convergence protocol layer is extended above 15 bits.