Abstract: A terminal apparatus for performing discontinuous reception (DRX) at least monitors both a PDCCH for C-RNTI and a PDCCH for CC-RNTI for a DRX-related active time and monitors a PDCCH for CC-RNTI in a period of a CC-RNTI monitoring window. The CC-RNTI monitoring window is started in a subframe n?X+1, and in a case that a second PDCCH is detected in a subframe n?X+v or a subframe up to the subframe n?X+v, the CC-RNTI monitoring window is ended in the subframe n in which the second PDCCH is detected, or in a case that the second PDCCH is not detected in the subframe n?X+v or the subframe up to the subframe n?X+v, the CC-RNTI monitoring window is ended in the subframe n?X+v.

Abstract: A terminal apparatus includes the reception unit configured to receive sTTI pattern information indicating a length of an sTTI, and a decoding unit configured to decode a short physical downlink control channel in accordance with a transmission scheme for the short physical downlink control channel, and decode the short physical downlink shared channel in accordance with a transmission scheme for the short physical downlink shared channel. The transmission scheme for the short physical downlink control channel and the transmission scheme for the short physical downlink shared channel are given based on the sTTI pattern information.

Abstract: A terminal apparatus includes: a reception unit configured to: receive a PDCCH or an EPDCCH with a DCI format and a first RRC parameter, and decode a PDSCH according to detection of the PDCCH or the EPDCCH; and a transmission unit configured to: transmit a HARQ-ACK in a subframe n according to detection of the PDSCH in a subframe n?k. Whether the PUCCH resource is given at least based on the first RRC parameter is determined at least based on part of or all of the first condition and the second condition described below: first condition: the value k, and second condition: which one of CSS and USS is a search space to which a physical downlink control channel including the DCI format is mapped.

Abstract: An apparatus includes: a transmitter configured to transmit a transport block on PUSCH; and a physical layer processing unit configured to calculate transmit power of the PUSCH, at least based on a number of SC-FDMA symbols NPUSCH-initialsymb for PUSCH initial transmission for the transport block, wherein the number of the SC-FDMA symbols NPUSCH-initialsymb is given at least based on NLBT and a number of SC-FDMA symbols NULsymb included in an uplink slot, and a value of NLBT is 1 in a case that a time continuous signal of a first SC-FDMA symbol included in the PUSCH is generated based on a content of a resource element corresponding to a second SC-FDMA symbol following the first SC-FDMA symbol.

Abstract: An apparatus includes: a transmitter configured to transmit a transport block and HARQ-ACK on PUSCH; and a physical layer processing unit configured to calculate a number of coded bits for the HARQ-ACK, at least based on a number of SC-FDMA symbols NPUSCH-initialsymb for PUSCH initial transmission for the transport block, and modulation order for the transport block, wherein the number of the SC-FDMA symbols NPUSCH-initialsymb is given at least based on NLBT and a number of SC-FDMA symbols NULsymb included in an uplink slot, and a value of NLBT is 1 in a case that a time continuous signal of a first SC-FDMA symbol included in the PUSCH is generated based on a content of a resource element corresponding to a second SC-FDMA symbol following the first SC-FDMA symbol.

Abstract: Uplink control information can be efficiently transmitted. A terminal apparatus (1) receives an uplink grant used for scheduling of a PUSCH in a serving cell and an uplink grant used for scheduling of a sPUSCH in the serving cell, transmits a periodic channel state information report by using the PUCCH in the serving cell, and in a case that transmission of the sPUSCH occurs in a subframe in which transmission of the periodic channel state information report by using the PUCCH has already started, stops the transmission of the PUCCH already started. According to the present invention, the terminal apparatus (1) can efficiently transmit the uplink control information. The base station apparatus (3) can efficiently receive the uplink control information.

Abstract: Provided is a terminal apparatus including: a measurement unit that can measure a time difference between reception and transmission by the terminal apparatus; a transmitter that can report a measurement result of the time difference based on an event associated with the measurement of the time difference, wherein in a case that the prescribed Transmission Time Interval (TTI) length is configured, and in addition, in a case that the measurement result is greater than a prescribed threshold, the transmitter reports the measurement result to the terminal apparatus. The transmission efficiency is thus improved.

Abstract: The terminal apparatus 1 receives an uplink grant to be used for scheduling a PUSCH in the serving cell and an uplink grant to be used for scheduling a sPUSCH in the serving cell, transmits a periodic channel state information report using a PUCCH in the serving cell, transmits the periodic channel state information report using the PUSCH in a subframe in which the PUSCH is scheduled, and does not transmit the periodic channel state information report using the sPUSCH in a subframe in which the sPUSCH is scheduled. According to the present invention, the terminal apparatus 1 can efficiently transmit the uplink control information. Also, the base station apparatus 3 can efficiently receive the uplink control information.

Abstract: A method for enabling a PUCCH with a TTI equal to or less than 1 ms. A terminal apparatus includes a transmitter configured to transmit an uplink signal on a PUCCH corresponding to a single SC-FDMA symbol, and a controller configured to determine transmit power for transmission on the PUCCH, wherein the uplink signal is generated based on a first sequence and a second sequence, the first sequence is given by applying a first cyclic shift to a third sequence, the second sequence is given by applying a second cyclic shift to the third sequence, and transmit power for transmission on the PUCCH is given based on a value of the first cyclic shift and a value of the second cyclic shift.

Abstract: A terminal apparatus capable of efficiently performing a random access procedure is a terminal apparatus that communicates with a base station apparatus by using multiple serving cells including a primary cell and one or multiple secondary cells, and includes a medium access control layer processing unit (15) for starting a random access procedure in any one of the multiple serving cells based on a PDCCH order, a transmitter (10) for transmitting a random access preamble in any one of the multiple serving cells, and a receiver (10) for receiving a random access response, in which the medium access control layer processing unit (15), in a case that reception of the random access response is considered not successful, determines whether to automatically resume transmission of the random access preamble or not, at least based on which of the primary cell and the secondary cell is used to transmit the random access preamble.

Abstract: To efficiently transmit channel state information. A terminal apparatus includes a receiver configured to receive information for configuring a first mode and information for configuring a second mode and receive an UL grant to be used for scheduling of a PUSCH and an UL grant to be used for scheduling of a sPUSCH; and transmits CSI on the PUSCH by using the first mode, based on the UL grant to be used for scheduling of the PUSCH, and transmits CSI on the sPUSCH by using the second mode, based on the UL grant to be used for scheduling of the sPUSCH.

Abstract: A terminal apparatus (1) capable of efficiently performing a random access procedure includes a medium access control layer processing unit (15) for starting a random access procedure based on a PDCCH order, a transmitter (10) for transmitting a random access preamble by using a Physical Random Access CHannel (PRACH), and a transmit power controller (17) for setting transmit power for transmitting the random access preamble based on a transmission counter, in which the transmission counter is configured at least based on a first piece of information and a second piece of information included in the PDCCH order, the first piece of information is used for indicating the random access preamble, and the second piece of information is used for selecting a resource of the PRACH.

Abstract: A terminal apparatus 1 and a base station apparatus 3 efficiently continue to communicate with each other. The terminal apparatus 1 is a terminal apparatus to be handed over from a source cell to a target cell, and the terminal apparatus is handed over from the source cell to the target cell, and includes a receiver 13 configured to receive a higher layer information mobilityControlInfo including a first uplink grant and a subframe allocation information and a transmitter 13 configured to perform a transmission based on the first uplink grant in one of a plurality of subframes indicated by the subframe allocation information, wherein the subframe allocation information indicates at least one of the plurality of subframes associated with a set having the same number across radio frames.

Abstract: A terminal apparatus and a base station apparatus efficiently continue communication with each other. A terminal apparatus is configured to perform a handover from a source cell to a target primary cell, the terminal apparatus includes: a receiver configured to receive a handover command; and a transmitter configured to transmit an RRC complete message after starting synchronization with a downlink of the target primary cell, in which, in a case that a parameter MobilityControlInfo included in the handover command includes a parameter associated with a TA and in a case of detecting, in the target primary cell, a PDCCH to which a CRC parity hit scrambled by a C-RNTI is attached, a T304 timer is stopped.

Abstract: A channel estimation unit estimates channel state information to or from a base station device. A feedback information generation unit performs a decomposition process for the channel state information and thereby acquires first decomposition information that includes plural singular values and second decomposition information that includes plural right singular vectors respectively associated with the plural singular values. The feedback information generation unit mutually replaces portions of the plural singular values, thereby acquires first replacement information, and further acquires second replacement information based on the first replacement information and the plural right singular vectors. The feedback information generation unit performs a conversion process for the second replacement information and thereby acquires second conversion information. A radio transmission unit notifies the base station device of the second conversion information.

Abstract: A reduction in interference improves throughput and increase opportunity for communication by each terminal apparatus. A base station apparatus that communicates with a terminal apparatus transmits information relating to a transmit power for a UE-specific reference signal in a state of being included in downlink control information, in a case of a predetermined transmission mode. A terminal apparatus that communicates with a base station apparatus includes a reception unit that receives downlink control information which includes information relating to a transmit power for a UE-specific reference signal, from the base station apparatus, in a case of a predetermined transmission mode, and a reception signal is demodulated based on the downlink control information.

Abstract: A radio communication apparatus that is a transmission opportunity holder efficiently transmits an instruction of frame transmission, to multiple terminal apparatuses. A radio communication apparatus of the present invention includes a transmission unit configured to transmit a first frame to obtain a TXOP, transmit a Trigger frame providing an instruction of transmission of a second frame addressed to the radio communication apparatus itself, to at least one of the multiple terminal apparatuses in the TXOP, and transmit a third frame addressed to at least one of the multiple terminal apparatuses in the TXOP. A value indicating a TXOP that is written in the second frame and that the third frame is to obtain is different from a value obtained by dividing a value indicating the TXOP written in the first frame by a value indicating a duration elapsed from start of transmission of the first frame to communication completion of the second frame.

Abstract: Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.

Abstract: A terminal device decreases degradation of communication performance that is caused by interference and increases in the case that a CCA level is increased. The terminal device communicating with a base station apparatus includes a transmitting unit that transmits a frame, a transmission burst length setting unit that modifies a transmission burst length of the frame, and a carrier sense unit that performs carrier sensing before the frame is transmitted. The transmission burst length is different depending on whether a threshold value for the carrier sensing is configured to a first value or a second value.

Abstract: A radio communication system realizing flexible QoS control is provided. A radio communication system according to an aspect of the present invention includes multiple base station devices, each of the multiple base station devices including a reception unit configured to exert a carrier sense function. The multiple base station devices include first base station devices and second base station devices. Each of the first base station devices includes a control unit configured to acquire a first radio parameter common to the first base station devices. Each of the second base station devices includes a control unit configured to acquire a second radio parameter common to the second base station devices. First communication quality provided by the first radio parameter is different from second communication quality provided by the second radio parameter.