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US 12,008,275 B2Granted
Image forming apparatus enables first wireless communication mode via access point and second wireless communication mode not via access point and to further receive trigger frame via the access point, method, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorKeigo Tsuchiya
Life of this patent
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Abstract
In a case where an image forming apparatus operates as a master station determining a communication channel used in wireless communication, the image forming apparatus transmits a second trigger frame that includes information indicating inexecution of carrier sensing and complies with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, to a slave station apparatus connected to the master station.
Claims10
An image forming apparatus, comprising:
- at least one memory and at least one processor and/or at least one circuit, which function as:
- a communication control unit configured to enable both a first mode in which wireless communication is performed 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;
- a reception unit configured to receive a first trigger frame including information about execution of carrier sensing, from the external access point while the first and second modes are enabled, the first trigger frame complying with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard;
- a first transmission unit configured to transmit, in a case where the first trigger frame includes information indicating execution of carrier sensing, data after executing carrier sensing;
- a second transmission unit configured to transmit, in a case where the image forming apparatus operates as a master station configured to determine a communication channel used in wireless communication of the second mode while the first mode and the second mode are enabled and the first trigger frame is received, a second trigger frame including information indicating inexecution of carrier sensing, to a slave station apparatus connected to the master station, the second trigger frame complying with the IEEE802.11 standard;
- and
- a print processing unit configured to perform print processing on a sheet based on print data received from the slave station apparatus.
4 more elements
A method for performing a print job by an image forming apparatus (151), the method comprising:
- setting a first mode in which wireless communication is performed 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;
- receiving a first trigger frame including information about execution of carrier sensing, from the external access point while the first and second modes are enabled, the first trigger frame complying with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard;
- transmitting via a first transmission means, in a case where the first trigger frame includes information indicating execution of carrier sensing, data after executing carrier sensing;
- transmitting via a second transmission means, in a case where the image forming apparatus operates as a master station configured to determine a communication channel used in wireless communication of the second mode while the first mode and the second mode are enabled and the first trigger frame is received, a second trigger frame including information indicating inexecution of carrier sensing to a slave station apparatus connected to the master station, the second trigger frame complying with the IEEE802.11 standard;
- and
- performing print processing on a sheet based on print data received from the slave station apparatus.
3 more elements
Dependencies are inferred from the claim text.