Patent ID: 7924805

Claim:
A communication apparatus, comprising: a generating unit configured to generate a single physical frame including, a first data frame with a first traffic identifier for identifying a first priority thereof, a second data frame with a second traffic identifier for identifying a second priority thereof, wherein the first traffic identifier and the second traffic identifier are different from each other, and at least a transmission request for requesting transmission of first acknowledgement information corresponding to the first data frame and second acknowledgement information corresponding to the second data frame; a transmitting unit configured to transmit the physical frame generated by the generating unit in a first communication period given by a polling frame; and a receiving unit configured to receive the first and second acknowledgement information including a reception state of the physical frame transmitted in a second communication period given by a polling frame, wherein the transmission request includes information for determining respective start sequence numbers of the first and second data frames to be acknowledged back to the transmitting unit, and wherein the transmission request includes Block Ack starting sequence control fields corresponding to each of the first and second traffic identifiers, from which a reception status is required.