Abstract: A communication system including a first communication apparatus and a second communication apparatus, wherein the first communication apparatus receive from the second communication apparatus, information indicating a bandwidth to be used by the second communication apparatus to communicate with the first communication apparatus, transmitting, in transmitting a downlink Multi-User Physical Layer Protocol Data Unit (MU PPDU) to a plurality of communication apparatuses including the second communication apparatus with a predetermined bandwidth in a case where the bandwidth to be used by the second communication apparatus indicated by the received information is smaller than the predetermined bandwidth, an MU PPDU in which a subcarrier at the end of a frequency domain is not modulated with demodulation target data but a subcarrier different from the subcarrier at the end is modulated with demodulation target data, from among subcarriers that are to store data to be transmitted to the second communication appara

Abstract: A circuit for EMC 1 in a power input circuit includes at least two wirings of a high-potential-side wiring 2 and a low-potential-side wiring 3 having different potentials and formed on a circuit board, a cutoff part 6 having one end connected to the high-potential-side wiring 2, a capacitor 10 connected between the other end of the cutoff part 6 and the low-potential-side wiring 3, a cutoff part 7 having one end connected to the high-potential-side wiring 2, a capacitor 20 connected between the other end of the cutoff part 7 and the low-potential-side wiring 3, and a capacitor 30 connected between a connection part 4 where the cutoff part 6 and the capacitor 10 are connected and a connection part 5 where the cutoff part 7 and the capacitor 20 are connected. This can reduce the number of capacitors while preventing a decrease in the capacitance.

Abstract: A communication apparatus capable of multiple link communication compliant with an IEEE 802.11 series standard, decides a first link, from among a plurality of links established with a communication partner apparatus, which is to be a link with prohibited transmission by the communication partner apparatus, and a transmission prohibition period for the first link, and transmits, using the first link, a first frame including information relating to transmission prohibition for the first link. The communication apparatus transmits, using a second link different from the first link among the plurality of links, a second frame including information relating to transmission prohibition for the first link, before the transmission prohibition period starts.

Abstract: A communication apparatus transmits or receives an Extremely High Throughput (EHT) single-user (SU) physical-layer protocol data unit (PPDU), an EHT extended range (ER) SU PPDU, or an EHT multi-user (MU) PPDU. The transmitted or received EHT PPDU includes an EHT signal field (EHT-SIG) which includes a field indicating information regarding semi-orthogonal multiple access (SOMA).

Abstract: If a communication apparatus is to transmit data to another communication apparatus and communication via a communication unit included in the other communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on an amount of data accumulated in a transmission queue in which the data is stored.

Abstract: A communication apparatus transmits or receives an Extremely High Throughput (EHT) single-user (SU) physical-layer protocol data unit (PPDU), an EHT extended range (ER) SU PPDU, or an EHT multi-user (MU) PPDU. The transmitted or received EHT PPDU includes an EHT signal field (EHT-SIG) which includes a field indicating information regarding semi-orthogonal multiple access (SOMA).

Abstract: A communication device that transmits or receives a radio frame including a preamble and a data field of a physical layer (PHY) is provided. The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG (Extremely High Throughput Signal Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG includes a subfield in which information on whether NOMA (Non-Orthogonal Multiple Access) is used in transmission of data included in the data field is set.

Abstract: A link is established between communication apparatuses 102 and 103 that can execute multi-link communication complying with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard via a frequency channel, and a media access control (MAC) frame in which information regarding a second link different from an established first link is included later than a field in which information regarding a service set identifier (SSID) is stored is communicated between the communication apparatuses 102 and 103.

Abstract: A motor includes a shaft to rotate about a central axis extending in a vertical direction, a metal heat sink including a through-hole through which the shaft extends, a substrate disposed at an upper side of the heat sink through a gap, a sensor magnet fixed to an upper end of the shaft, a rotation sensor located at an upper side of the sensor magnet, and a heat dissipating material located in a gap between the substrate and the heat sink. The heat sink includes a heat sink main body portion and a wall portion located between the substrate and the heat sink main body portion and between the heat dissipating material and the through-hole when viewed from the vertical direction.

Abstract: If a communication apparatus is to transmit data to another communication apparatus and communication via a communication unit included in the other communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on an amount of data accumulated in a transmission queue in which the data is stored.

Abstract: If a communication apparatus is to transmit data to another communication apparatus and communication via a communication unit included in the other communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on an amount of data accumulated in a transmission queue in which the data is stored.

Abstract: A communication device that transmits or receives a radio frame including a preamble and a data field of a physical layer (PHY) is provided. The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG (Extremely High Throughput Signal Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG includes a subfield in which information on whether NOMA (Non-Orthogonal Multiple Access) is used in transmission of data included in the data field is set.

Abstract: A communication apparatus functioning as an enrollee defined by a Device Provisioning Protocol (DPP) standard requests a communication parameter to be used by the communication apparatus to participate in a network formed by an access point from another communication apparatus functioning as a configurator defined by the DPP standard, receives the communication parameter from the other communication apparatus in response to the request, attempts to participate in the network using the communication parameter, and transmits an attempt result of the participation in the network to the other communication apparatus.

Abstract: A communication device is provided that transmits or receives a radio frame including a preamble and a data field of a physical layer (PHY). The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG (Extremely High Throughput Signal Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG includes a subfield in which information is set on whether NOMA (Non-Orthogonal Multiple Access) is used in transmission of data included in the data field.

Abstract: If a communication apparatus transmits data to another communication apparatus and communication via a communication unit included in another communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on priority of the data.

Abstract: A communication apparatus transmits or receives an Extremely High Throughput (EHT) single-user (SU) physical-layer protocol data unit (PPDU), an EHT extended range (ER) SU PPDU, or an EHT multi-user (MU) PPDU. The transmitted or received EHT PPDU includes an EHT signal field (EHT-SIG) which includes a field indicating information regarding semi-orthogonal multiple access (SOMA).

Abstract: A motor drive device includes an inverter circuit, a switching circuit that switches between conduction and interruption between a power supply and the inverter circuit, and a switching driver that outputs, to the switching circuit, a command voltage which commands a switching operation. The switching circuit includes a first field-effect transistor (FET) and a second FET connected in series with sources of each other in order from a side of the power supply, and the switching driver includes an output circuit that outputs an interruption command voltage in a case in which a potential difference between drains of the FETs exceeds a threshold value, and a delay circuit that causes a timing at which the command voltage is input to a gate of the first FET to be later than a timing at which the command voltage is input to a gate of the second FET.

Abstract: A communication device that transmits or receives a radio frame including a preamble and a data field of a physical layer (PHY) is provided. The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG (Extremely High Throughput Signal Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG includes a subfield in which information on whether NOMA (Non-Orthogonal Multiple Access) is used in transmission of data included in the data field is set.

Abstract: If a communication apparatus is to transmit data to another communication apparatus and communication via a communication unit included in the other communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on an amount of data accumulated in a transmission queue in which the data is stored.

Abstract: If a communication apparatus transmits data to another communication apparatus and communication via a communication unit included in another communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on priority of the data.