Patent ID: 8812926

Claim:
A wireless communication apparatus transmitting and receiving MAC PDU with a data check bit comprising: a receiving section that receives the MAC PDU from another wireless communication apparatus of a transmitting origin; a received MAC PDU determining section that performs a data check for the received MAC PDU using the data check bit and determines whether an error occurs in the MAC PDU; a received result transmitting section that, when determining occurrence of the error, discards the MAC PDU and transmits a retransmission request for the MAC PDU to the other wireless communication apparatus, and otherwise, transmits a message indicating that the MAC PDU is normal to the other wireless communication apparatus; a format determining section that determines whether a format of the MAC PDU is normal, and passes a result of the format determining section to a predetermined processing when the format of the MAC PDU is determined to be normal; and a retransmission asking section that discards the MAC PDU and requests the received result transmitting section to transmit the retransmission request when the format of the MAC PDU is other than normal, wherein the format of the MAC PDU is determined to be other than normal including when at least one of an identifier of a logical channel and an identifier of MAC control information is out of a range of the wireless communication apparatus.