Back to results
US 2026/0029972 A1Published application
Image forming apparatus, method, and medium
AssigneeCanon Kabushiki Kaisha
InventorKEIGO TSUCHIYA
Life of this patent
Estimating the term…
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.
Claims21
A communication system, comprising:
- at least one memory and at least one processor, 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 communication system, 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 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 communication unit configured to communicate, in a case where the communication system 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, with a slave station apparatus connected to the master station;
- and
- a scan control unit configured to perform control to read a document to acquire scan data to be transmitted,
- wherein the communication unit does not transmit, in a case where the communication system operates as the master station while the first mode and the second mode are enabled and the first trigger frame is received, information indicating execution of carrier sensing.
5 more elements
A communication method, comprising:
- enabling both a first mode in which wireless communication is performed via an external access point located outside a communication system, and a second mode in which wireless communication is not performed via the external access point;
- receiving, by a reception unit, 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 IEEE 802.11 standard;
- transmitting, by a transmission unit, in a case where the first trigger frame includes information indicating execution of carrier sensing, data after executing carrier sensing;
- communicating, by a communication unit, in a case where the communication system 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, with a slave station apparatus connected to the master station;
- performing control, by a scan control unit, to read a document to acquire scan data to be transmitted;
- wherein the communication unit does not transmit, in a case where the communication system operates as the master station while the first mode and the second mode are enabled and the first trigger frame is received, information indicating execution of carrier sensing.
3 more elements
A non-transitory computer-readable storage medium storing instructions that, when executed by at least one processor, cause the processor to perform a method comprising:
- enabling both a first mode in which wireless communication is performed via an external access point located outside a communication system, and a second mode in which wireless communication is not performed via the external access point;
- receiving, by a reception unit, 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 IEEE 802.11 standard;
- transmitting, by a transmission unit, in a case where the first trigger frame includes information indicating execution of carrier sensing, data after executing carrier sensing;
- communicating, by a communication unit, in a case where the communication system 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, with a slave station apparatus connected to the master station;
- performing control, by a scan control unit, to read a document to acquire scan data to be transmitted;
- wherein the communication unit does not transmit, in a case where the communication system operates as the master station while the first mode and the second mode are enabled and the first trigger frame is received, information indicating execution of carrier sensing.
3 more elements
Dependencies are inferred from the claim text.