Abstract: A terminal device which communicates with a base station device includes a reception unit that decodes a PDCCH having a DCI format 1C accompanying a CRC which is scrambled by using a TDD reconfiguration RNTI. The DCI format 1C includes an instruction of an uplink-downlink configuration for a plurality of serving cells. Thus, a mobile station device and the base station device can efficiently communicate with each other.

Abstract: A terminal device capable of communicating with a base station device includes a reception unit which performs first measurement based on a first RS and performs second measurement based on a second RS, and a higher layer processing unit which reports a result of the first measurement and a result of the second measurement to the base station device. The result of the first measurement is reported to the base station device in a first state. The result of the first measurement or the result of the second measurement is reported to the base station device in a second state.

Abstract: A cell using an unallocated frequency band or a shared frequency band is efficiently controlled. A terminal device includes a reception unit configured to receive a first downlink physical channel mapped on the basis of a first possible starting position of a downlink transmission and a second downlink physical channel mapped on the basis of a second possible starting position of the downlink transmission. Upon the first possible starting position and the second possible starting position being indicated by a higher layer, the reception unit receives, in a predetermined subframe, either one of the first downlink physical channel or the second downlink physical channel, on a secondary cell having a frame structure type 3.

Abstract: A terminal includes a transmission unit which transmits HARQ response information to transmission of a downlink-shared channel in one or more predetermined subframes based on resources of one or more uplink control channels. When a certain subframe in the predetermined subframes is a first subframe, a resource of an uplink control channel is given by an arithmetic operation using at least an initial value of a control channel element for use in transmitting a physical downlink control channel in the certain subframe and a first value configured by a higher layer. When a certain subframe in the predetermined subframes is a second subframe, a resource of an uplink control channel is given by an arithmetic operation using at least an initial value of a control channel element for use in transmitting a physical downlink control channel in the certain subframe and a second value configured by a higher layer.

Abstract: A terminal includes a transmission unit that transmits a physical uplink control channel by using a physical uplink control channel resource for transmitting HARQ-ACK, in a subframe n. The physical uplink control channel resource is given by a value of a first control channel element used for transmitting the corresponding physical downlink control channel or the corresponding extended physical downlink control channel, in at least a subframe n-k. The element k is included only in a first set defined by a first table, in a case where the terminal is not configured with a higher layer parameter. The element k is given based on the first set defined by the first table and a second set defined by a second table, in a case where the terminal is configured with the higher layer parameter.

Abstract: A terminal communicates with a base station and includes a transmission unit that transmits a physical uplink control channel by using a physical uplink control channel resource for transmitting HARQ-ACK in a subframe n. The physical uplink control channel resource is given by at least a value of a first control channel element used for transmitting a corresponding physical downlink control channel or a corresponding extended physical downlink control channel, in a subframe n-k. The physical uplink control channel resource is given by a first arithmetic operation when a value of the element k is the same as a value of an element in a first set. The physical uplink control channel resource is given by a second arithmetic operation when a value of the element k is the same as a value of an element in a second set.

Abstract: A terminal device that communicates with a base station apparatus includes a transmission unit that transmits a channel and/or a signal based on a maximum output power in a first cell group in a certain subframe. In a case where information relating to uplink transmission in the second cell group is recognized, a residual power is allocated based on a priority level of a type of uplink transmission. The residual power is given by subtracting a power that is determined based on uplink transmission in the first cell group and a power that is determined based on the uplink transmission in the second cell group from a sum of maximum output powers of the terminal device. The maximum output power is a sum of the power that is determined based on the uplink transmission in the first cell group and a power that is allocated to the first cell group, of the residual power.

Abstract: Provided are a terminal device, a base station device, and a method that make it possible to communicate efficiently in a communication system in which a base station device and a terminal device communicate. The terminal device communicates with the base station device and is provided with a higher layer processing unit that expands a Ci field based on a MAC CE when a secondary cell list is expanded via RRC signalling.

Abstract: A terminal device that communicates with a base station apparatus includes a transmission unit that transmits a channel and/or a signal based on a maximum output power in a first cell group in a certain subframe. The maximum output power in the first cell group is a sum of a power that is determined based on uplink transmission in the first cell group in a certain subframe and a power that is allocated to the first cell group, of a residual power. The residual power is given by subtracting the power that is determined based on the uplink transmission in the first cell group in the certain subframe and a power for a second cell group from a sum of maximum output powers of the terminal device.

Abstract: Provided is a terminal configured to communicate with a base station with an FDD cell and a TDD cell. The terminal includes a reception unit configured to perform reception on a PDCCH transmitted in a DCI format. When a TDD cell is configured as a primary cell for the terminal, a first uplink reference UL-DL configuration used for determination of the interval between the reception of the PDCCH indicating a PUSCH transmission and the PUSCH transmission is configured for the TDD cell, and a second uplink reference UL-DL configuration used for determination of whether to use a DAI included in the DCI format of the PDCCH indicating the PUSCH transmission is configured in the FDD cell.

Abstract: A terminal device that communicates with a base station apparatus includes a transmission unit that transmits a channel and/or a signal based on a maximum output power in a first cell group in a certain subframe. In a case where information relating to uplink transmission in the second cell group is recognized, a residual power is allocated based on a priority level of a type of uplink transmission. The residual power is given by subtracting a power that is determined based on uplink transmission in the first cell group and a power that is determined based on the uplink transmission in the second cell group from a sum of maximum output powers of the terminal device. The maximum output power is a sum of the power that is determined based on the uplink transmission in the first cell group and a power that is allocated to the first cell group, of the residual power.

Abstract: Provided is a terminal device that communicates with a base station apparatus using a first cell group and a second cell group. The terminal device includes a higher-layer processing unit that sets guarantee power in the first cell group and guarantee power in the second cell group. In a case where a radio link failure occurs in a serving cell belonging to the second cell group, the guarantee power in the first cell group and/or the guarantee power in the second cell group are changed.

Abstract: A terminal communicating with a base station by using an FDD cell and a TDD cell includes a reception unit that performs reception over a PDCCH transmitted using a DCI format. In a case where the TDD cell is configured as a primary cell for the terminal, a first uplink reference UL-DL configuration used for determining an interval between reception of the PDCCH indicating transmission of a PUSCH and the transmission of the PUSCH is configured for the TDD cell, and a second uplink reference UL-DL configuration used for determining whether or not to use DAI included in the DCI format of the PDCCH indicating the transmission of the PUSCH is configured for the FDD cell.

Abstract: If dual connectivity is configured, and a first cell group includes a primary cell and an uplink physical channel in a second cell group is a physical uplink control channel in the second cell group, power of the uplink physical channel in the second cell group is determined on the basis of whether PSCG, which is the maximum transmit power of the second cell group, is exceeded, and PSCG is calculated through computation using at least PCMAX, PMeNB, and power of the physical uplink control channel in the first cell group.

Abstract: A terminal communicating with a base station by using FDD cells and TDD cells includes a reception unit that performs reception over a PDCCH transmitted using a DCI format. In a case where a primary cell is configured as the TDD cell for the terminal, DAI indicating the accumulated number of PDCCHs or EPDCCHs indicating releasing of downlink semi-persistent scheduling or transmission of a PDSCH in subframes until a current subframe of prescribed subframes is received while being included in the DCI format. A transmit power of a PUCCH transmitted while including HARQ-ACK corresponding to the PDCCH or the EPDCCH indicating the releasing of the downlink semi-persistent scheduling or the transmission of the PDSCH is determined based on a value of the DAI.

Abstract: Provided is a terminal device configured to communicate with a base station device. The device includes a transmission unit that, upon transmission of a PRACH in a primary cell in a subframe i1 of a first CG (transmission of a first PRACH) overlapping transmission of a PRACH in a subframe i2 of a second CG (transmission of a second PRACH) and the first PRACH being ready to be transmitted in a subframe at least one before the subframe i1, transmits the first PRACH.

Abstract: Provided is a transmission unit that, if transmission of a PUCCH of a first CG overlaps transmission of a PUSCH and/or a PUCCH of a second CG in a certain subframe and UCI including HARQ-ACK is transmitted on the PUCCH of the first CG, upon transmit power of the PUCCH of the first CG exceeding a first upper limit value, performs scaling on the transmit power of the PUCCH of the first CG such that the transmit power of the PUCCH does not exceed the first upper limit value, and upon the transmit power of the PUCCH of the first CG not exceeding the first upper limit value, sets the transmit power of the PUCCH of the first CG to power required for the PUCCH of the first CG.

Abstract: Provided is a terminal apparatus that communicates with a base station apparatus, including: a control unit that determines a transmit power that is available for application in a first Cell Group (CG), by performing comparison with a first upper limit value and based on the smaller of the transmit power and the first upper limit value, in a case where transmission in a subframe i1 in the first CG overlaps transmission in subframes i2?1 and i2 in a second CG, in which the first upper limit value includes a maximum output power among at least subframes that overlap.

Abstract: If dual connectivity is configured, and a first cell group includes a primary cell and an uplink physical channel in a second cell group is a physical uplink control channel in the second cell group, power of the uplink physical channel in the second cell group is determined on the basis of whether PSCG, which is the maximum transmit power of the second cell group, is exceeded, and PSCG is calculated through computation using at least PCMAX, PMeNB, and power of the physical uplink control channel in the first cell group.

Abstract: There are provided terminal devices (1A to 1C) capable of efficiently performing communication in a communication system in which a base station device (3) and the terminal devices (1A to 1C) communicate with each other. The terminal devices (1A to 1C) that communicate with the base station device (3) include a reception unit that receives notification of a cell state of the base station device (3), a channel state information generation unit that generates channel state information based on channel measurement acquired based on a channel state information reference signal and interference measurement acquired based on a channel state information interference measurement resource, and a transmission unit that transmits the channel state information. The channel state information generation unit performs the channel measurement or the interference measurement based on a subframe in consideration of the cell state.