Communication control apparatus and method, and wireless communication apparatus and method

A communication control method, comprising:

• causing a first wireless communication apparatus to hold a data signal including data;
• controlling transmission of the data signal to a second wireless communication apparatus;
• controlling reception of a block acknowledgement signal from the second wireless communication apparatus;
• determining, based on the block acknowledgement signal, the data of the data signal that the second wireless communication apparatus has failed to demodulate;
• controlling, based on the determination of the data of the data signal that the second wireless communication apparatus has failed to demodulate, transmission of a trigger signal to the first wireless communication apparatus;
• and
• causing, based on the transmitted trigger signal, the first wireless communication apparatus to retransmit the data signal to the second wireless communication apparatus.

A wireless communication apparatus, comprising:

• processing circuitry configured to:
• control reception of a data signal including data from a first wireless communication apparatus;
• hold the data signal including data;
• control reception of a trigger signal from the first wireless communication apparatus, wherein
• the trigger signal is received based on a failure in demodulation of the data signal by a second wireless communication apparatus,
• the first wireless communication apparatus has transmitted the data signal to the second wireless communication apparatus, and
• the trigger signal includes information to cause retransmission of the data signal to the second wireless communication apparatus;
• and
• control retransmission of the data signal to the second wireless communication apparatus based on the reception of the trigger signal.

A wireless communication method, comprising:

• controlling reception of a data signal including data from a first wireless communication apparatus;
• holding the data signal including data;
• controlling reception of a trigger signal from the first wireless communication apparatus, wherein
• the trigger signal is received based on a failure in demodulation of the data signal by a second wireless communication apparatus
• the first wireless communication apparatus has transmitted the data signal to the second wireless communication apparatus, and
• the trigger signal includes information to cause retransmission of the data signal to the second wireless communication apparatus;
• and
• controlling retransmission of the data signal to the second wireless communication apparatus based on the reception of the trigger signal.

A first wireless communication apparatus, comprising:

• a demodulator configured to:
• receive, from a first wireless communication apparatus, a data signal including data;
• demodulate the received data signal;
• receive, from a second wireless communication apparatus, a part of the data signal that has failed to be correctly demodulated;
• and
• demodulate the received part of the data signal, wherein
• the part of the data signal is retransmitted from the second wireless communication apparatus upon receipt of a first trigger signal, and
• the trigger signal is transmitted from the first wireless communication apparatus to the second wireless communication apparatus.

A wireless communication method, comprising:

• receiving, from a first wireless communication apparatus, a data signal including data;
• demodulating the received data signal;
• receiving, from a second wireless communication apparatus, a part of the data signal that has failed to be correctly demodulated;
• and
• demodulating the received part of the data signal, wherein
• the part of the data signal is transmitted from the second wireless communication apparatus upon receipt of a trigger signal, and
• the trigger signal is transmitted from the first wireless communication apparatus to the second wireless communication apparatus.