Abstract: An object of the present invention is to protect the communication of a legacy terminal while achieving favorable communication rendering the CCA level of a CCA-variable terminal apparatus variable in an environment, premised on CSMA/CA, where the CCA-variable terminal apparatus and a legacy terminal apparatus coexist. A terminal apparatus for performing wireless communication with a base station apparatus includes: a receiving unit that receives a radio signal transmitted from the base station apparatus; a CCA-variable channel information processing unit that acquires first CCA-variable channel instruction information contained in the radio signal and containing information regarding a range of a CCA level that is available on a certain channel and that is used for clear channel assessment; and a higher layer unit that selects, according to the first CCA-variable channel instruction information, a channel to be used.

Abstract: The invention includes a print terminal that prints input image data and outputs the input image data as a print image, and an image storage server that is connected to the print terminal via a public network, and that stores the image data sent from the print terminal and user identification information. The print terminal creates, out of the print image, user identification information based on photographing location information and photographing date/time information included as data in a user identification information image specified by the user. In a case where the print terminal receives a re-input of image data of the user identification information image, the print terminal resends user identification information to the image storage server. In a case where an image directory including the resent user identification information internally exists, the image storage server sends the image data in the image directory to the print terminal.

Abstract: Provided is a terminal apparatus configured to: receive, in a first PDCCH, a first uplink grant to which first CRC parity bits scrambled with a C-RNTI for a dynamically scheduled transmission is attached; receive, in a second PDCCH, a second uplink grant to which second CRC parity bits scrambled with SPS C-RNTI for a semi-persistently scheduled transmission is attached; perform multiple transmissions corresponding to a bundle, based on the first uplink grant or the second uplink grant; and determine a redundancy version corresponding to each of the multiple transmissions, excluding a first transmission of the multiple transmissions, based at least on whether the bundle is associated with the second uplink grant.

Abstract: A CCA level is made to be variable efficiently while maintaining the fairness relating to acquisition of a transmission opportunity by wireless terminal apparatuses, and thus efficiency of a radio resource is improved. Provided is a terminal apparatus that performs wireless communication with a base station apparatus, and includes; a MAC frame categorization unit categorizing MAC frames, in each of which media access control header is attached to transmission data, based on a type of MAC frame; and a QoS control unit performing a carrier sense using a first CCA level, in a case where the MAC frame is included in a first category that results from the categorization by the MAC frame categorization unit, and performing the carrier sense using a second CCA level different from the first CCA level, in a case where the MAC frame is included in a second category different from the first category.

Abstract: Provided is a terminal apparatus configured to receive a PDCCH including DCI format 1C to which CRC parity bits scrambled with a CC-RNTI are added, and to transmit a preamble in an LAA cell, wherein a type of an uplink LBT procedure for a PRACH transmission is determined based on whether or not a PRACH resource to be used for the PRACH transmission is at least included in a subframe in an uplink duration in which no downlink physical channel is received, and a value of the uplink duration is given based at least on an ‘Uplink transmission duration and offset indication’ field included in the DCI format 1C.

Abstract: The objective of the invention is to achieve efficient downlink non-orthogonal multiple access using a limited amount of control information. A base station device that adds and transmits symbols addressed to a first terminal device and one or more second terminal devices, using portion of available subcarriers, includes: a power setting unit that sets the first terminal device to a lower energy than the one or more second terminal devices; a scheduling unit that, for signals addressed to the one or more second terminal devices, performs resource allocation that is different from resource allocation for a signal addressed to the first terminal device; and an MCS determining unit that controls modulation schemes such that, when allocating resources for the signal addressed to the first terminal device, the modulation schemes used by the one or more second terminal devices, to be added to the signal addressed to the first terminal device, are the same.

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 first uplink multiple access information, and a transmission unit that transmits a frame including second uplink multiple access information based on the frame including the first uplink multiple access information, and further, after standby of a predetermined period, initiates the uplink multiple access communication.

Abstract: A terminal apparatus applies, in a case that a handover command is received, and the handover command includes skip information (rach-Skip) for indicating that a random access procedure for a target primary cell is skipped, a value of NTA indicated by target TA information (targetTA) included in the skip information (rach-Skip) to a target primary Timing Advance Group (TAG) after synchronization with a downlink of the target primary cell is initiated, and starts a Time Alignment (TA) timer associated with the target primary TAG.

Abstract: Provided is a terminal apparatus including a receiver that can receive a PSDCH and a transmitter that can transmit an HARQ-ACK for the PDSCH by use of a PUCCH. In the terminal apparatus, the transmitter shortens a timing for transmitting the HARQ-ACK for the PDSCH based on a prescribed TTI length configured for the PDSCH, and a PUCCH format to transmit the HARQ-ACK is determined based on the TTI length of the PDSCH and the TTI length of the PUCCH.

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: Provided is a terminal apparatus that performs an uplink LBT procedure, wherein one or more than one subframes are allocated for transmission of a message 3 in an LAA cell, and an LBT procedure for transmission of a random access preamble is initiated in a case where it is determined that a channel is busy in all of the one or more than one subframes.

Abstract: A terminal apparatus configures transmission timing for a PUSCH in a target cell based on first information included in a handover command received. The terminal apparatus initiates a random access procedure in a primary cell, at least in a case that an SR is pending, a UL-SCH resource is not available for transmission in a current subframe, and a valid PUCCH resource for the SR is not available in any one of subframes. The terminal apparatus does not initiate the random access procedure in the primary cell, in the case that the SR is pending, the UL-SCH resource is not available for the transmission in the current subframe, and the valid PUCCH resource for the SR is not available in any one of the subframes, and at least in a case that the first information is configured.

Abstract: A terminal apparatus includes a receiver configured to receive a DCI format including an uplink grant, and a transmitter configured to transmit a PUSCH or an sPUSCH based on the uplink grant. A TTI of the PUSCH is one sub-frame. A TTI of the sPUSCH is shorter in value than one slot. In a case that a transmission of a channel quality indicator is triggered in response to a transmission of the PUSCH, the uplink control information is transmitted in the PUSCH. In a case that a transmission of a channel quality indicator is triggered in response to a transmission of the sPUSCH, a transmission of the uplink control information is dropped.

Abstract: A communication method used by a terminal apparatus includes the step of separately generating first coded bits fk of a transport block, second coded bits q0 of control information, and third coded bits q1 of a rank indicator, and multiplexing the first coded bits fk and the second coded bits q0 to generate multiplexed bits gk, and the step of multiplexing the multiplexed bits gk and the third coded bits q1 to generate a first sequence hk, wherein the position where the third coded bits q1 are mapped is given at least based on a part of a first condition, a second condition, and a third condition, the first condition is whether a search space detecting the PDCCH is a CSS or a USS, the second condition is which RNTI is used to scramble CRC parity bits attached to the DCI format, and the third condition is whether the first method or the second method is used for the first coded bits.

Abstract: A terminal apparatus transmits an uplink physical channel including a transport block, and sets transmission power to transmit the uplink physical channel based on at least a first element and/or a second element described below.

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: A terminal 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 whether a signal waveform applied to a prescribed channel is an OFDM.

Abstract: A terminal apparatus includes: a sequence generation unit configured to generate a first sequence for a first reference signal, based on a first parameter, and generate a second sequence for a second reference signal; and a mapping unit configured to map each of the sequences to a physical resource, wherein the sequence generation unit configures the first parameter to a first value in a case that a terminal apparatus speed does not exceed a first threshold, and configures the first parameter to a second value in a case that the terminal apparatus speed exceeds the first threshold, and the mapping unit maps the second sequence to a physical resource, based on the sequence for the first reference signal.

Abstract: A terminal apparatus includes: a receiver configured to detect a DCI format in a search space; a coding unit configured to divide a transport block into one or multiple code blocks, based at least on the DCI format and code the one or multiple code blocks to generate coded bits; and a transmitter configured to transmit the coded bits on a PUSCH. Multiplexed bits are given based at least on concatenation of the coded bits generated by coding the one or multiple code blocks. The coding unit maps the multiplexed bits to a matrix in a first-axis prioritized manner and reads out the multiplexed bits mapped to the matrix in the first-axis prioritized manner or a second-axis prioritized manner. Whether to prioritize the first axis or the second axis in a case of reading out the multiplexed bits mapped to the matrix, is based at least on whether or not the search space is CSS.

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.