Abstract: In a state in which a connection is established between a communication apparatus and a first other communication apparatus while a connection is not established between the communication apparatus and second other communication apparatuses, first information shared by the first other communication apparatus and the second other communication apparatuses in terms of the second other communication apparatuses is received. In a case where the received first information is included in a first field included in a received predetermined frame and indicating a transmission source of the predetermined frame, a data field after the first field of the predetermined frame is read.

Abstract: A communication device 100 transmits a frame to be transmitted from the communication device 100 toward a plurality of communication networks 101 to 103 and to be transmitted so that the communication device 100 receives information on a channel state from a plurality of communication devices 107 and 108. The frame includes at least sets of AIDs of the respective plurality of communication devices 107 and 108 and pieces of identification information of communication networks to which the communication devices 107 and 108 belong, or at least sets of AIDs of the respective plurality of communication devices 107 and 108 and MAC addresses of the respective plurality of communication devices 107 and 108. The communication device 100 receives the channel state from the plurality of communication devices 107 and 108 that have received the transmitted frame.

Abstract: A communication device (100) that operates as an access point transmits a frame including first information to request communication devices (104, 105, 106) configured to operate as an access point to transmit information about the own device to the communication device (100) and second information indicating an RU used by the communication devices (104, 105, 106) to transmit the first information, and receives, in parallel, a response frame in response to the transmitted frame including information about the communication devices (104, 105, 106) in the RU indicated by the second information using Orthogonal Frequency Division Multiple Access (OFDMA).

Abstract: When a plurality of apparatuses each having a role of establishing a wireless network performs, in parallel, communication with a first apparatus having a role of joining a wireless network via a plurality of transmission channels, a communication apparatus controls, based on acquired information about a communication quality in communication between a second apparatus included in the plurality of apparatuses and the first apparatus, a transmission output of at least the second apparatus such that a difference between a communication quality in communication between an apparatus included in the plurality of apparatuses and different from the second apparatus and the first apparatus and a communication quality in communication between the second apparatus and the first apparatus becomes smaller. Alternatively, the communication apparatus determines at least one of a coding rate and a modulation scheme for use in communication between the second apparatus and the first apparatus based on the information.

Abstract: A communication apparatus comprises a first communication unit configured to connect to another communication apparatus and communicate by using a PCR (Primary Connectivity Radio) function, and a second communication unit configured to communicate with the other communication apparatus by using a WUR (Wake Up Radio) function. The communication apparatus stores, in a storage unit, a first transmission rate which is a transmission rate of the first communication unit used before the WUR mode is started, and sets the stored first transmission rate as a second transmission rate which is a transmission rate of the first communication unit used when the WUR mode has been ended.

Abstract: A communication apparatus generates a management frame complying with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard and transmits the generated management frame. The management frame includes a Multi-band element, and any of a set of 2.4 GHz band and 5 GHz band, a set of 5 GHz band and 6 GHz band, a set of 2.4 GHz band and 6 GHz band, and a set of 2.4 GHz band, 5 GHz band, and 6 GHz band is set as information indicating frequency bands to be used by the communication apparatus, to a Band ID value included in the Multi-band element.

Abstract: When a plurality of apparatuses each having a role of establishing a wireless network performs, in parallel, communication with a first apparatus having a role of joining a wireless network via a plurality of transmission channels, a communication apparatus controls, based on information about a communication quality in communication between a second apparatus included in the plurality of apparatuses and the first apparatus, a transmission output of at least the second apparatus such that a difference decreases between (i) communication quality in communication between an apparatus included in the plurality of apparatuses and different from the second apparatus and the first apparatus and (ii) a communication quality in communication between the second apparatus and the first apparatus. Alternatively, the communication apparatus determines at least one of a coding rate and a modulation scheme for use in communication between the second apparatus and the first apparatus based on the information.

Abstract: A communication apparatus communicates an Extremely High Throughput (EHT) Multi-User (MU) Physical Layer Protocol Data Unit (PPDU) including an Extremely High Throughput-Signal-B (EHT-SIG-B) including a resource unit (RU) allocation subfield including N×8 bits, where N=8 holds in a case where the communication apparatus uses a bandwidth of 320 MHz as a bandwidth.

Abstract: A communication apparatus, which operates as a master access point in a wireless network including one or more other access points operating as slaves and one or more stations, generates a trigger frame that includes a Trigger type subfield value indicating an instruction to perform cooperative transmission with the other access points, transmits the generated trigger frame to the other access points, and executes the cooperative transmission with the other access points to which the trigger frame has been transmitted.

Abstract: A communication device communicates a physical (PHY) frame including a preamble and a data field. The preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal Field (L-SIG), an EHT Signal Field (EHT-SIG-A), an EHT Signal Field (EHT-SIG-B), an EHT Short Training Field (EHT-STF), and an EHT Long Training Field (EHT-LTF), and the EHT-SIG-B includes a subfield indicating the number of spatial streams allocated to each of not less than one other communication device that communicates with the communication device, and the sum of the numbers of spatial streams is larger than 8.

Abstract: A communication apparatus comprises a first communication unit configured to connect to another communication apparatus and communicate by using a PCR (Primary Connectivity Radio) function, and a second communication unit configured to communicate with the other communication apparatus by using a WUR (Wake Up Radio) function. The communication apparatus stores, in a storage unit, a first transmission rate which is a transmission rate of the first communication unit used before the WUR mode is started, and sets the stored first transmission rate as a second transmission rate which is a transmission rate of the first communication unit used when the WUR mode has been ended.

Abstract: When a plurality of apparatuses each having a role of establishing a wireless network performs, in parallel, communication with a first apparatus having a role of joining a wireless network via a plurality of transmission channels, a communication apparatus controls, based on acquired information about a communication quality in communication between a second apparatus included in the plurality of apparatuses and the first apparatus, a transmission output of at least the second apparatus such that a difference between a communication quality in communication between an apparatus included in the plurality of apparatuses and different from the second apparatus and the first apparatus and a communication quality in communication between the second apparatus and the first apparatus becomes smaller. Alternatively, the communication apparatus determines at least one of a coding rate and a modulation scheme for use in communication between the second apparatus and the first apparatus based on the information.

Abstract: An optical transmission apparatus for transmitting pulsed light includes a dispersion medium having a negative dispersion parameter in a wavelength band of incident pulsed light, a first fiber which receives the pulsed light that has passed through the dispersion medium and has a negative dispersion parameter in a wavelength band of the incident pulsed light, and a second fiber which receives the pulsed light that has passed through the first fiber and has a positive dispersion parameter in a wavelength band of the incident pulsed light. The dispersion medium and the second fiber have positive dispersion slopes. The first fiber has a negative dispersion slope.

Abstract: A thermal stencil master sheet for stencil printing has a thermoplastic synthetic resin film which is perforatable with heat and a porous substrate, which is substantially unchanged by the heat. The film is bonded to the substrate with a urethane adhesive, preferably composed mainly of a specific urethane prepolymer obtained by reacting a polyether diol with a diisocyanate so as to give an equivalent ratio of NCO/OH of at least 1.1.