Image forming apparatus

An image forming apparatus comprising:

• a communication control unit configured to enable both a first mode for performing wireless communication via an external access point, wherein the external access point is located outside the image forming apparatus, and a second mode in which wireless communication is not performed via the external access point outside the image forming apparatus;
• a reception unit configured to receive a first trigger frame compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard from the external access point while the first mode and the second mode are enabled, the first trigger frame including information regarding execution of carrier sense;
• a first transmission unit configured to, in a case where the first trigger frame includes information indicating that the carrier sense is to be executed, execute the carrier sense and then transmit data;
• a second transmission unit configured to, in a case where the image forming apparatus operates as a master station that is configured to determine a communication channel to be used in the wireless communication in the second mode while the first mode and the second mode are enabled, transmit a second trigger frame compliant with the IEEE 802.11 standard to a slave station apparatus connected to the master station, the second trigger frame including information indicating that the carrier sense is to be executed;
• and
• a printing processing unit configured to perform printing processing on a sheet based on print data received from the slave station apparatus.