Communication apparatus, control method, and storage medium

A control method for a communication apparatus, the control method comprising:

• in a case where a plurality of apparatuses each having a first role of establishing a wireless network performs, in parallel, communication with a first apparatus having a second role of joining a wireless network via a plurality of transmission channels, acquiring first information about a communication quality in communication between a second apparatus included in the plurality of apparatuses and the first apparatus;
• controlling to decrease a transmission output of the second apparatus when a value indicated by the first information is greater than a first predetermined value, and controlling to increase the transmission output of the second apparatus when the value indicated by the first information is less than a second predetermined value;
• and
• performing control in such a manner that the plurality of apparatuses including the second apparatus performing communication using the controlled transmission output performs, in parallel, communication with the first apparatus via the plurality of transmission channels using distributed multi-input and multi-output (MIMO) complying with IEEE 802.11 series standard.

A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform a control method for a communication apparatus, the control method comprising:

• in a case where a plurality of apparatuses each having a first role of establishing a wireless network performs, in parallel, communication with a first apparatus having a second role of joining a wireless network via a plurality of transmission channels, acquiring first information about a communication quality in communication between a second apparatus included in the plurality of apparatuses and the first apparatus;
• controlling to decrease a transmission output of the second apparatus when a value indicated by the first information is greater than a first predetermined value, and controlling to increase the transmission output of the second apparatus when the value indicated by the first information is less than a second predetermined value;
• and
• performing control in such a manner that the plurality of apparatuses including the second apparatus performing communication using the controlled transmission output performs, in parallel, communication with the first apparatus via the plurality of transmission channels using distributed multi-input and multi-output (MIMO) complying with IEEE 802.11 series standard.

A communication method for communicating with a mobile station using two or more base stations of a plurality of base stations, the communication method comprising:

• receiving information about a communication quality in communication about a mobile station before using the two or more base stations to communicate with the mobile station via a plurality of transmission channels;
• determining, based on the information, transmission power for a first base station and/or a second base station of the plurality of base stations so that a difference between a signal strength at which the mobile station receives a first signal transmitted from the first base station to the mobile station and a signal strength at which the mobile station receives a second signal transmitted from the second base station to the mobile station becomes smaller;
• and
• performing control in such a manner that a communication with the mobile station by the first base station and the second base station is performed using a distributed multi-input and multi-output (MIMO) method based at least on the determined transmission power for the first base station and/or the second base station.