US Patent No. 10,893,484

COMMUNICATION DEVICE, INFORMATION PROCESSING DEVICE, CONTROL METHOD, AND PROGRAM


Patent No. 10,893,484
Issue Date January 12, 2021
Title Communication Device, Information Processing Device, Control Method, And Program
Inventorship Hajime Shimura, Yokohama (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 10,893,484

1. A communication apparatus comprising:one or more processors; and
one or more memories including instructions that, when executed by the one or more processor, cause the communication apparatus to:
transmit a trigger frame including information about a resource unit compliant with an IEEE (Institute of Electrical and Electronics Engineers) 802.11 series standard in which another communication apparatus transmits a signal and an information element to be used to determine transmission power for an other communication apparatus to transmit a signal in the resource unit; and
receive the signal transmitted from the other communication apparatus by using the transmission power determined based on communication quality between the communication apparatus and the other communication apparatus and the information element, in response to transmission of the trigger frame,
wherein the communication apparatus receives the signal transmitted from the other communication apparatus by using first transmission power in a case where the communication quality is first quality, and the communication apparatus receives the signal transmitted from the other communication apparatus by using second transmission power higher than the first transmission power in a case where the communication quality is second quality lower than the first quality, and
wherein the other communication apparatus detects a level of a signal transmitted from an apparatus different from the communication apparatus on a frequency channel on which the communication apparatus transmits a signal, and in a case where the detected level is lower than a predetermined threshold, the other communication apparatus transmits the signal by using transmission power higher than transmission power to be used in a case where the detected level is higher than the predetermined threshold, and the communication apparatus receives the signal transmitted from the other communication apparatus.