Patent ID: 7743310

Claim:
A communication apparatus, comprising: a generation device configured to generate a frame, the frame comprising a first separation field, the first separation field including at least a first MAC protocol data unit (MPDU) length field and a first cyclic redundancy check (CRC) field, the first MPDU length field including first length information of a first MPDU, the first CRC field being for protecting at least the first length information, the first MPDU following the first separation field, the first MPDU including a first MAC header, a first data field, and a first frame check sequence (FCS), the first FCS being for detecting an error occurred in at least the first data field, a second separation field following the first MPDU, the second separation field including at least a second MPDU length field and a second CRC field, the second MPDU length field including second length information set to a value of zero to indicate no second MPDU directly follows the second separation field, the second CRC field being for protecting at least the second length information, a third separation field following the second separation field, the third separation field including at least a third MPDU length field and a third CRC field, the third MPDU length field including third length information of a third MPDU, the third CRC field being for protecting at least the third length information, and the third MPDU following the third separation field, the third MPDU including a third MAC header, a third data field, and a third FCS, the third FCS being for detecting an error occurred in at least the third data field, wherein the frame is to be transmitted to a destination communication apparatus.