Abstract: A terminal apparatus according to an aspect of the present embodiment acquires multiple pieces of sounding reference signal (SRS) resource set configuration information indicating a configuration of multiple SRS resources, transmits an SRS and an uplink shared channel (PUSCH) based on the multiple SRS resources, acquires information (SRI) indicating one of the multiple SRS resources included in a piece of SRS resource set configuration information of the multiple pieces of SRS resource set configuration information, from control information (DCI) transmitted via a downlink control information channel (PDCCH), and acquires, from the DCI, information indicating whether only one of the multiple pieces of SRS resource set configuration information is associated with the PUSCH.

Abstract: Provided are communication apparatus and a communication method that allow for secure communication even in a case that an eavesdropper has multiple antennas. An apparatus includes a transmitter configured to transmit a constant amplitude signal from three or more transmit antennas; a controller configured to control a phase of the constant amplitude signal, based on channel information and a target symbol; and a modulation unit configured to generate a modulation symbol from bits. The target symbol is generated by multiplying the modulation symbol by an amplitude coefficient.

Abstract: A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a receiver configured to receive downlink control information and a downlink shared channel; and a signal detection unit configured to demodulate the downlink shared channel (PDSCH) by using the downlink control information, wherein the downlink control information includes information for indicating an antenna port number and the number of code division multiplexing (CDM) groups for a demodulation reference signal (DMRS), each of the CDM groups indicates a DMRS port to be multiplexed by CDM, the PDSCH is demodulated in consideration of a power ratio of the DMRS and the PDSCH, and whether or not to consider powers of the DMRS and the PDSCH, based on the number of the CDM groups, is determined based on the downlink control information.

Abstract: A base station apparatus controls an access scheme for each radio resource by using higher layer signaling such that only signals generated by a same type of a signal generation method are multiplexed for each radio resource.

Abstract: An apparatus includes: a receiver configured to receive a channel state information reference signal (CSI-RS), downlink control information (DCI), and a downlink shared channel (PDSCH); a measurement unit configured to determine CSI from the CSI-RS, based on CSI configuration information; and a transmitter configured to transmit the CSI, wherein the DCI includes the CSI configuration information, and the CSI configuration information includes information for indicating whether the PDSCH is associated with configuration information for one CSI-RS resource or is associated with configuration information for a plurality of the CSI-RS resources.

Abstract: Included are a higher layer processing unit configured to configure a resource configuration for a channel state information reference signal (CSI-RS), a transmitter configured to transmit the CSI-RS to the terminal apparatus, and a receiver configured to receive CSI and CSI configuration information from the terminal apparatus, wherein the resource configuration includes configuration information of multiple CSI-RS resources, the CSI includes at least one CRI for indicating one of the multiple CSI-RS resources, and the CSI configuration information indicates whether the CSI includes one CRI of the at least one CRI or multiple CRIs of the at least one CRI in a case that multiple pieces of configuration information of the multiple CSI-RS resources are configured.

Abstract: In a case that a base station apparatus or a terminal apparatus performs transmission by beamforming and further performs carrier aggregation, Quasi-colocation (QCL) is configured between component carriers. The configured QCL is used for calculating Channel State Information (CSI). Further, the CSI of a component carrier is calculated based on the configuration of QCL between the component carrier and an antenna port. Further, the CSI of the component carrier is calculated based on the number of antenna ports to be used.

Abstract: The present invention includes: a receiver configured to receive interference information and a downlink shared channel; and a signal detection unit configured to demodulate the downlink shared channel, wherein the interference information includes demodulation reference signal (DMRS) information and phase tracking reference signal (PTRS) information, and an interference signal is cancelled or suppressed by using the interference information. The DMRS information includes a DMRS port number, and the PTRS information includes the number of PTRS ports and a DMRS port number associated with a PTRS.

Abstract: A base station apparatus provided with a function of performing communication using multiple beams implements appropriate beamforming while reducing interference power, thereby communication quality becomes stable and frequency efficiency or throughput is improved. The base station apparatus according to the present invention is a base station apparatus for communicating with a terminal apparatus, the base station apparatus including: a transmitter configured to transmit a synchronization signal block including a synchronization signal in a prescribed transmission window; and a controller configured to configure a size of the prescribed transmission window in which the synchronization signal block is transmitted, in which the transmitter notifies the terminal apparatus of information associated with QCL between two of the synchronization signal blocks transmitted in the prescribed transmission window.

Abstract: A terminal apparatus according to an aspect of the present embodiment acquires multiple pieces of sounding reference signal (SRS) resource set configuration information indicating a configuration of multiple SRS resources, transmits an SRS and an uplink shared channel (PUSCH) based on the multiple SRS resources, acquires information (SRI) indicating one of the multiple SRS resources included in a piece of SRS resource set configuration information of the multiple pieces of SRS resource set configuration information, from control information (DCI) transmitted via a downlink control information channel (PDCCH), and acquires, from the DCI, information indicating whether only one of the multiple pieces of SRS resource set configuration information is associated with the PUSCH.

Abstract: A terminal apparatus for communicating with a base station apparatus, the terminal apparatus including: a receiver configured to receive downlink control information and a downlink shared channel; and a signal detection unit configured to demodulate the downlink shared channel (PDSCH) by using the downlink control information, wherein the downlink control information includes information for indicating an antenna port number and the number of code division multiplexing (CDM) groups for a demodulation reference signal (DMRS), each of the CDM groups indicates a DMRS port to be multiplexed by CDM, the PDSCH is demodulated in consideration of a power ratio of the DMRS and the PDSCH, and whether or not to consider powers of the DMRS and the PDSCH, based on the number of the CDM groups, is determined based on the downlink control information.

Abstract: A base station apparatus according to the present invention includes a transmitter configured to transmit a downlink signal by using a first component carrier and a second component carrier, and a receiver configured to receive an uplink signal transmitted by the terminal apparatus by using at least the second component carrier. The transmitter transmits spatial relation information in the uplink signal, the spatial relation information is information indicating a spatial domain transmission filter for transmitting the uplink signal, and the spatial relation information in the second component carrier includes information indicating the first component carrier.

Abstract: A base station apparatus controls an access scheme for each radio resource by using higher layer signaling such that only signals generated by a same type of a signal generation method are multiplexed for each radio resource.

Abstract: In a case where a 2.4 GHz band access point (20) and a 5 GHz band access point (22) are attached to the same wireless base station (2), the portable terminal (1) sets a higher priority to the access point (22). Consequently, the portable terminal (1) connects preferentially to the access point (22) through which higher throughput is obtained.

Abstract: A receiver device in accordance with the present invention (for example, wireless LAN device) includes: a radio frequency signal processor section converting an incoming radio frequency signal to a lower frequency; an RSSI circuit (reception strength sensor section) sensing the signal strength of the radio frequency signal; an intermediate frequency signal processor section converting a signal from the radio frequency signal processor section to an even lower frequency; a digital demodulator section (demodulator section) demodulating a signal from the intermediate frequency signal processor section; and a power control circuit controlling power supply to circuits in the intermediate frequency signal processor section which makes up part of the analog section (AGC circuit, IF mixer circuit, LPF circuit, and amplifier circuit) according to a result of sensing by the RSSI circuit. The structure provides a power saving receiver device.

Abstract: A receiver device in accordance with the present invention (for example, wireless LAN device) includes: a radio frequency signal processor section converting an incoming radio frequency signal to a lower frequency; an RSSI circuit (reception strength sensor section) sensing the signal strength of the radio frequency signal; an intermediate frequency signal processor section converting a signal from the radio frequency signal processor section to an even lower frequency; a digital demodulator section (demodulator section) demodulating a signal from the intermediate frequency signal processor section; and a power control circuit controlling power supply to circuits in the intermediate frequency signal processor section which makes up part of the analog section (AGC circuit, IF mixer circuit, LPF circuit, and amplifier circuit) according to a result of sensing by the RSSI circuit. The structure provides a power saving receiver device.

Abstract: A chain guide member used in a chain transmission apparatus, and manufacturing method and apparatus thereof. The chain guide member has a sliding contact section extending along a traveling surface of a chain and coming into sliding contact with the chain, and a reinforcement main body reinforcing and supporting the sliding contact section along the traveling surface of the chain. A part or all of a joint portion between the sliding contact section and the reinforcement main body is joined by melting.

Abstract: A chain guide member used in a chain transmission apparatus, and manufacturing method and apparatus thereof. The chain guide member has a sliding contact section extending along a traveling surface of a chain and coming into sliding contact with the chain, and a reinforcement main body reinforcing and supporting the sliding contact section along the traveling surface of the chain. A part or all of a joint portion between the sliding contact section and the reinforcement main body is joined by melting.

Abstract: In a processing method for strengthening carbon steel materials, a carbon steel having an average hardness in the range of HRC 50 to 57 and a bainite structure is subjected to a tension working so as to provide a residual strain of at least 0.3% to the carbon steel. The tensile load in the tension working exceeds the yield point, and is 95% or less of the fracture load.