Abstract: Uplink control information can be efficiently transmitted. A terminal apparatus (1): (i) receives an uplink grant used for scheduling of a PUSCH and an uplink grant used for scheduling of a sPUSCH; (ii) transmits uplink control information; and (iii) in a first case of performing sPUSCH transmission in a first subframe in the primary cell and performing PUSCH transmission in the first subframe in the secondary cell, transmits the uplink control information by using the PUSCH in the first subframe in the secondary cell.

Abstract: A base station apparatus (3) includes a receiver (30) configured to receive an initial transmission of a transport block and a transmitter (30) configured to transmit a PDCCH for retransmission of the transport block. An uplink grant for the initial transmission of the transport block is included in a random access response corresponding to a non-contention based random access procedure. A type of a search space in which the PDCCH for retransmission of the transport block is transmitted is determined, based at least on whether an RRC layer parameter shortProcessingTime is configured for the terminal apparatus.

Abstract: Communication opportunities of existing terminal devices are ensured, in a communication system in which terminal devices capable of using a new CCA level and the existing terminal devices using an existing CCA level coexist, on the premise of CSMA/CA. A communication method of a radio transmission device of the present invention includes a step of signaling information indicating a first CCA section and a second CCA section to the radio reception device. A communication method of a radio reception device of the present invention includes a step of performing the carrier sense based on a first CCA level and a second CCA level, and a step of performing the carrier sense based on the first CCA level, in the first CCA section, based on information indicating the first CCA section.

Abstract: A terminal apparatus capable of efficiently performing uplink and/or downlink communication is provided. Multiple CBs included in the transport block is decoded. HARQ-ACKs corresponding to multiple CBG are transmitted. The multiple CBs include one or more first CBs and one or more second CBs. A first size of a first CB of the one or more first CBs is greater than a second size of a second CB of the one or more second CBs. Each of the multiple CBs is included in any one of the multiple CBGs. The multiple CBGs include one or more first CBGs and one or more second CBGs. A first total number of the one or more first CBs and the one or more second CBs included in each of the one or more first CBGs is greater than a second total number of the one or more first CBs and the one or more second CBs included in each of the one or more second CBGs.

Abstract: The terminal apparatus derives CSI, transmits the CSI, and determines content of the CSI based on a type of a downlink physical channel that is allocated to a CSI reference resource or allocated before and closest to the CSI reference resource.

Abstract: A BSS to which a destination wireless communication apparatus of a physical layer frame belongs is identified, and accuracy of preamble detection is improved by changing a reception operation. A wireless communication apparatus includes a reception unit that detects a frame including information for identifying a BSS, and a control unit that switches between a first operation in a case where the frame is a frame which is associated with a BSS to which the wireless communication apparatus belongs and a second operation in a case where the frame is a frame which is not associated with the BSS to which the wireless communication apparatus belongs. Carrier sensing is not performed in the first operation, and the carrier sensing is performed in the second operation.

Abstract: An apparatus includes: a receiver configured to receive a PDCCH including downlink control information; and a transmitter configured to transmit a sPUSCH, based at least on detection of the PDCCH. The sum of the number of symbols to which the sPUSCH is mapped and the number of SC-FDMA symbols to which a DMRS associated with the sPUSCH is mapped is 2 and/or 3. In a case that a CRC added to the downlink control information is scrambled with a C-RNTI, the index of the SC-FDMA symbol to which the DMRS associated with the sPUSCH is mapped is given based at least on the downlink control information. In a case that the CRC added to the downlink control information is scrambled with an SPS C-RNTI, the index of the symbol to which the DMRS associated with the sPUSCH is mapped is given based at least on higher layer signaling.

Abstract: A terminal apparatus includes a receiver configured to receive a PDCCH including downlink control information used for scheduling of a PUSCH, a coding unit configured to encode uplink control information, and a transmitter configured to transmit the uplink control information by using the PUSCH. A coding rate R and a modulation order Qm are given based on one field included in the downlink control information. The number Q of coded bits of the uplink control information is given at least based on the number Q? of coded modulation symbols for the uplink control information and the modulation order Qm. The number Q? of coded modulation symbols is given at least based on the coding rate R and the modulation order Qm.

Abstract: A terminal apparatus includes a medium access control layer processing unit configured to manage a HARQ process, and a physical layer processing unit configured to perform processing associated with a PUSCH transmission on a physical layer. A first HARQ process configured for the terminal apparatus determines whether or not to indicate to the physical layer processing unit to generate a transmission of the first HARQ process, based at least on whether or not the transmission of the first HARQ process and a transmission of a second HARQ process occur in the same transmission time. The transmission of the second HARQ process is scheduled so as to use short processing time.

Abstract: A terminal apparatus transmits capability information. The capability information includes a first capability parameter, a second capability parameter, and a third capability parameter. The first capability parameter indicates whether the terminal apparatus supports Semi-Persistent Scheduling in a primary cell. The second capability parameter indicates whether the terminal apparatus supports skipping of uplink transmission corresponding to a grant configured for a primary cell in a case that there is no available data for transmission in a buffer of the terminal apparatus. The third capability parameter indicates whether the terminal apparatus supports Semi-Persistent Scheduling in an LAA secondary cell, and whether the terminal apparatus supports skipping of uplink transmission corresponding to a grant configured for an LAA secondary cell in a case that there is no available data for transmission in the buffer of the terminal apparatus.

Abstract: A terminal apparatus capable of efficiently performing uplink and/or downlink communication is provided. With respect to communication related to transport blocks and code block groups, in a case that a PDSCH and/or a PUSCH is scheduled by a PDCCH detected in a common search space CSS, an operation applied to a transmission process includes a prescribed operation regardless of a prescribed condition and first configuration information. In a case that the PDSCH and/or the PUSCH is scheduled by the PDCCH detected in a UE-specific search space USS, the operation applied to the transmission process is provided, based at least on the prescribed condition and/or the first configuration information.

Abstract: An apparatus includes a coding unit configured to divide a transport block into one or more code blocks and generate coded bit(s) by coding the one or more code blocks, and a transmitter configured to transmit the coded bit(s) by using a channel, wherein multiplex bit(s) are given based on at least coupling of the coded bit(s) generated by coding of the one or more code blocks, the coding unit maps the multiplex bit(s) to a matrix in a first-axis prioritized manner and reads the multiplex bit(s) from the matrix in the first-axis prioritized manner or in a second-axis prioritized manner, and whether the first axis or the second axis is prioritized in a case that the multiplex bit(s) are read from the matrix is given based on at least the number of OFDM symbols of the channel.

Abstract: The terminal apparatus receives a PHICH and a PDCCH, and in a case that transmission of a transport block corresponding to a first HARQ process and transmission of a transport block corresponding to a second HARQ process, each having a different processing time from reception of the PDCCH to transmission of a PUSCH, occur in an identical uplink subframe, an ACK is set as a state variable HARQ_FEEDBACK of the first HARQ process.

Abstract: Provided is a terminal apparatus for communicating with a base station apparatus by using a primary cell (PCell) and an LAA secondary cell (LAA SCell). A first uplink transmission corresponding to a first uplink grant configured for the PCell is skipped, based on at least a state that a first parameter is configured. A second uplink transmission corresponding to a second uplink grant configured for the LAA SCell is skipped, based on at least a state that a second parameter is configured. A third uplink transmission in the PCell and a fourth uplink transmission in the LAA SCell are skipped, based on at least a state that a third parameter is configured. The third uplink transmission corresponds to a third uplink grant corresponding to a C-RNTI. The fourth uplink transmission corresponds to a fourth uplink grant corresponding to the C-RNTI.

Abstract: A terminal apparatus attempts to decode a PDCCH during an active time in a case that an intermittent reception is configured. The terminal apparatus determines whether to start a UL HARQ RTT timer for a HARQ process based on whether a termination of an uplink transmission is indicated in a case that the PDCCH indicates the uplink transmission for the HARQ process.

Abstract: A terminal apparatus includes a higher layer processing unit configured to configure transmission mode information; and a reception unit configured to receive a physical downlink shared channel and a short physical downlink shared channel, and the transmission mode information indicates a transmission mode for the physical downlink shared channel and a transmission mode for the short physical downlink shared channel.

Abstract: A terminal apparatus includes a receiver configured to receive RRC information indicating the maximum number of CBGs X for one transport block in each serving cell; and a generation unit configured to generate X HARQ-ACK bits corresponding to the one transport block, in which the transport block includes NCB code blocks (CBs), in a case that the number of CBs NCB is less than the maximum number of CBGs X, the number of CBGs for the transport block is NCB, and the generation unit generates NCB HARQ-ACK bits for the NCB CBGs and X-NCB NACKs as the X HARQ-ACK bits.

Abstract: Provided is a terminal apparatus capable of efficiently performing uplink and/or downlink communication. A coding unit (1071) configured to divide a transport block into multiple CBs and code each of the multiple CBs, a transmitter (107) configured to transmit the transport block by using a PUSCH, and a receiver (105) configured to receive a first HARQ-ACK are included, wherein each of the multiple CBs is included in any one of multiple CBGs, the first HARQ-ACK includes a second HARQ-ACK for each of the multiple CBGs or a third HARQ-ACK for the transport block, in a case that a signal waveform applied to the PUSCH is OFDM, whether the first HARQ-ACK includes the second HARQ-ACK or the third HARQ-ACK is given based on higher layer signaling, and in a case that a signal waveform applied to the PUSCH is DFT-s-OFDM, the first HARQ-ACK includes the third HARQ-ACK.

Abstract: A terminal apparatus includes a receiver configured to monitor a PDCCH in a control resource set and a transmitter configured to transmit a PUSCH scheduled based on an uplink grant included in a DCI format transmitted in the PDCCH. The PDCCH includes one or more Control Channel Elements (CCEs). One of the one or more CCEs includes six Resource Element Groups (REGs). One of the REGs includes a PRB in an OFDM symbol. The one CCE includes one or more REG bundles non-continuously mapped in a frequency domain. One of the one or more REG bundles includes one or a plurality of the REGs. The number of the REGs constituting the one REG bundle in the frequency domain is given per the number of OFDM symbols in the one CCE.

Abstract: A method that carries out uplink multiple access while reducing complexity in processing accompanying exchange of control information. A terminal device that performs uplink multiple access communication includes a reception unit that receives a frame including uplink multiple access connection information, a first autonomous decentralized control unit that instructs securing time of a wireless resource, and a second autonomous decentralized control unit that instructs securing time of a wireless resource after reception of a frame including the uplink multiple access connection information. The terminal device is instructed securing time of the wireless resource by the first autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is not received. Securing time of the wireless resource is instructed by the second autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is received.