Communication apparatus, communication system, and communication control program

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 in a second communication period given by a polling frame, the first and second acknowledgement information including a reception state of the physical frame transmitted,
• 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,
• said respective start sequence numbers of the first and second data frames to be acknowledged back to the transmitting unit comprise a first frame transmission number in a consecutive sequence of the first and second data frames and a second frame transmission number in the consecutive sequence of the first and second data frames, and
• the first frame transmission number is an initial frame in said consecutive sequence of the first data frames and the second frame transmission is an initial frame in said consecutive sequence of the second data frames.