Communication devices and methods

A communication device configured to communicate with a second communication device, the communication device comprising circuitry configured to:

• transmit one or more data frames to the second communication device that require a response by the second communication device,
• listen to a first response acknowledging receipt of at least one of the one or more data frames from the second communication device, and
• if the first response is not received, change transmit opportunity configuration and/or channel access for non-data frames and/or data frames, wherein the circuitry is configured to
• retransmit a first part of the one or more data frames,
• listen to a second response acknowledging receipt of the transmitted first part of the one or more data frames from the second communication device,
• retransmit, if the second response is received, one or more further parts of the one or more data frames using one or more transmission parameters that are different from the transmission parameters used for initially transmitting the one or more data frames.

A communication method of a communication device for communicating with a second communication device, the communication method comprising:

• transmitting one or more data frames to the second communication device that require a response by the second communication device,
• listening to a first response acknowledging receipt of at least one of the one or more data frames from the second communication device, and,
• if the first response is not received, changing transmit opportunity configuration and/or channel access for non-data frames and/or data frames, the communication method comprising:
• recognizing a failed data transmission of a data frame by the communication device or the second communication device by recognizing a missing response following the transmission of the one or more data frames during a first transmit opportunity,
• signaling a shortened transmit opportunity to one or more third communication devices to transmit and/or receive during the shortened transmit opportunity, and/or configuring a shortened transmit opportunity to exchange data during the shortened transmit opportunity with one or more second and/or third communication devices, and
• retransmitting the one or more data frames to the second communication device or receiving the one or more data frames retransmitted from the second communication device during one or more second transmit opportunities.