MAC Protocol Data Unit (MPDU)

A MAC protocol data unit (MPDU) is a portion of data to be delivered to a MAC layer peer on a network, and it is data prepared for the PHY layer by the MAC sublayer.

A MAC protocol data unit (MPDU) is a portion of data to be delivered to a MAC layer peer on a network, and it is data prepared for the PHY layer by the MAC sublayer. The MAC sublayer receives the MSDU from upper layers on transmission and creates the MPDU. It receives the MPDU from the lower layer on receiving instantiation and removes the MAC header and footer to create the MSDU for the upper layers.