Communication apparatus and communication method

A communication apparatus for wireless communication in a wireless local area network, said communication apparatus comprising circuitry, the circuitry comprises a controller, a memory, a wireless communication interface, and an antenna, the circuitry configured to:

• receive a trigger frame comprising wireless communication resource information specifying uplink resources and frame attribute information related to transmission of response uplink frames, wherein the wireless communication resource information includes information related to a frequency resource, time and spatial streams;
• transmit the response uplink frame as a response to the trigger frame, wherein the response uplink frame comprises buffered data information, and the response uplink frame is transmitted using at least one resource unit specified in the wireless communication resource information;
• receive an uplink transmission permission frame comprising resource allocation information indicating allocated uplink transmission resources in response to the uplink resource frame comprising the buffered data information;
• and
• transmit a data frame using the allocated uplink data transmission resources in accordance with the uplink transmission permission frame,
• wherein the frame attribute information related to the transmission of the response uplink frames comprises attribute information of the communication apparatus and information related to a presence or an absence of an uplink communication request.

A communication method for wireless communication in a wireless local area network, said communication method comprising:

• transmitting a trigger frame to a plurality of stations, wherein the trigger frame comprises wireless communication resource information specifying uplink resources and frame attribute information related to transmission of response uplink frames, and the wireless communication resource information comprises information related to a frequency resource, time and spatial streams;
• receiving the response uplink frames being transmitted as responses to the trigger frame, wherein at least one of the response uplink frames comprises buffered data information, and the response uplink frame is transmitted using at least one resource unit specified in the wireless communication resource information;
• transmitting an uplink transmission permission frame comprising resource allocation information indicating allocated uplink transmission resources in response to the uplink resource frames comprising the buffered data information;
• receiving data frames being transmitted using the allocated uplink data transmission resources in accordance with the uplink transmission permission frame;
• and
• determining whether or not permission is given for data transmission of a data size indicated by the buffered data information.

A communication method for wireless communication in a wireless local area network, said communication method comprising:

• receiving a trigger frame comprising wireless communication resource information in which resources selectable as uplink resources are specified from a plurality of resources and frame attribute information related to transmission of a response uplink frame, wherein the wireless communication resource information comprises information related to a frequency resource, time and spatial streams;
• transmitting the response uplink frame as a response to the trigger frame, wherein the response uplink frame comprises buffered data information, and the response uplink frame is transmitted using at least one resource unit specified in the wireless communication resource information;
• receiving an uplink transmission permission frame comprising resource allocation information indicating allocated uplink transmission resources in response to the uplink resource frame comprising the buffered data information;
• and
• transmitting a data frame using the allocated uplink data transmission resources in accordance with the uplink transmission permission frame,
• wherein the frame attribute information related to the transmission of the response uplink frames comprises attribute information of a transmission apparatus performing the transmission of the response uplink frames, and the frame attribute information comprises information related to a presence or an absence of an uplink communication request.