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 physical downlink control channel (PDCCH) in a secondary cell having a frame structure type 3. Upon the terminal device detecting, in the secondary cell having the frame structure type 3, the PDCCH having downlink control information (DCI) in a subframe n, the terminal device assumes a configuration of occupied OFDM symbols in the secondary cell in accordance with a field in the DCI detected in the subframe n.

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 monitor a physical downlink control channel (PDCCH) in a secondary cell having a frame structure type 3. In the secondary cell having the frame structure type 3, upon a first possible starting position of a downlink transmission and a second possible starting position of the downlink transmission being indicated by a higher layer, the terminal device monitors both a first set of candidates for the PDCCH and a second set of candidates for the PDCCH in a predetermined subframe. The first set of candidates is assumed to start on the basis of the first possible starting position, and the second set of candidates is assumed to start on the basis of the second possible starting position.

Abstract: Provided is a terminal that performs communication with a base station, in which, in a case where a physical downlink control channel is monitored in a first enhanced physical downlink control channel-physical resource block set, a demodulation reference signal is used that is based on a scrambling sequence which is initialized by a prescribed parameter, and in which, in a case where the physical downlink control channel is monitored in a second enhanced physical downlink control channel-physical resource block set, a demodulation reference signal is used that is based on a scrambling sequence which is initialized by a parameter that is set individually for each terminal.

Abstract: With respect to uplink carrier aggregation, transmit power in a serving cell (c) is determined on the basis of maximum output power (PCMAX, C) for the serving cell c and total maximum output power (PCMAX). The maximum output power (PCMAX, C) for the serving cell (c) is based on maximum output power (PPowerClass) defined by a power class corresponding to a band to which the serving cell (c) belongs, and the total maximum output power (PCMAX) is based on maximum output power (PPowerClass) defined by a power class corresponding to a combination of aggregated bands.

Abstract: A terminal device transmits a RI for PDSCH transmission, receives first information used for determining a first maximum value of layers, the first maximum value being assumed for determining a bit width for the RI, and receives a transport block on a PDSCH, and decodes a code block of the transport block. Here, rate matching for the code block is performed based on the first information used for determining the first maximum value of the layer.

Abstract: A terminal device includes a transmission unit that transmits HARQ response information to a first serving cell and a second serving cell on a physical uplink shared channel in a subframe. The physical uplink shared channel is transmitted based on a physical downlink control channel or an enhanced physical downlink control channel which is detected in a state of including a downlink control information format 0/4. Two or more serving cells are configured in the terminal device, in a case where frame constitution types of any two configured serving cells are different from each other, and in a case where a primary cell has Frame constitution type 2, BcDL is applied to the first serving cell of Frame constitution type 2 by using a first following expression, and is applied to the second serving cell of Frame constitution type 1 by using a second expression.

Abstract: It is possible to efficiently transmit and receive signals including control information between a base station apparatus and a mobile station apparatus. A control channel is constituted of one or more first elements. The mobile station apparatus sets a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of resources in one physical resource block, and a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of second elements in a plurality of different physical resource blocks. Each of the second elements is resources obtained by dividing one physical resource block. The mobile station apparatus performs decoding detection of the control channel using the first elements in the set search spaces.

Abstract: There are provided a terminal device, a base station device, and an integrated circuit that enable a base station device and a terminal device to determine parameters related to uplink signals or uplink reference signals and to perform efficient communication.

Abstract: A user equipment includes a reception unit that receives first information indicating a radio network temporary identifier (RNTI), second information, plural pieces of third information, and fourth information. The second information indicates a subframe in which the user equipment monitors a physical downlink control channel with the RNTI. Each of the plural pieces of third information indicates an uplink-downlink configuration which is transmitted on the physical downlink control channel with the RNTI. The fourth information is used for determining an index of third information for a serving cell among the plural pieces of third information. In a case where the fourth information is configured for any of activated serving cells, the reception unit monitors the physical downlink control channel with the RNTI, in a common search space for a primary cell, in the subframe for monitoring the physical downlink control channel with the RNTI.

Abstract: First information indicating a length of a cyclic prefix for an inter-terminal apparatus signal transmitted to the other terminal apparatus and second information indicating a length of a cyclic prefix for an uplink signal in the EUTRAN, from a base station apparatus of the EUTRAN are received from a base station apparatus of the EUTRAN.

Abstract: It is possible to efficiently transmit and receive signals including control information between a base station apparatus and a mobile station apparatus. A control channel is constituted of one or more first elements. The mobile station apparatus sets a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of resources in one physical resource block, and a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of second elements in a plurality of different physical resource blocks. Each of the second elements is resources obtained by dividing one physical resource block. The mobile station apparatus performs decoding detection of the control channel using the first elements in the set search spaces.

Abstract: A base station apparatus includes a transmission unit that transmits first information indicating a first configuration, second information indicating a second configuration, and third information indicating a third configuration, in which the first configuration is used to determine a correspondence between a subframe in which a PDCCH is allocated and a subframe in which a PUSCH corresponding to the PDCCH is allocated, in which the second configuration is an element of a configuration set which is restricted on the basis of the first configuration, and is used to determine a correspondence between a subframe in which a PDSCH is allocated and a subframe in which a HARQ-ACK corresponding to the PDSCH is transmitted, and in which the third configuration is an element of a configuration set which is restricted on the basis of the first configuration and the second configuration, and is used to specify a subframe in which the PDCCH is monitored.

Abstract: A reception unit is included that receives pieces of information for a cell group, which include information indicating an RNTI and information indicating a subframe for monitoring a physical downlink control channel with the RNTI, receives pieces of information for each of multiple cells in the cell group, which include information for determining an index of information indicating an UL-DL configuration for each of the multiple cells in the cell group, and monitors the PDCCH that is accompanied by the RNTI, on a common search space of one cell in the cell group, on the subframe for monitoring the PDCCH with the RNTI. The information indicating the UL-DL configuration for each of the multiple cells in the cell group is transmitted on the PDCCH with the RNTI.

Abstract: There is provided a terminal for performing OFDM (Orthogonal Frequency-Division Multiplexing) communication with a base station forming a cell. The terminal includes a control channel processing unit configured to monitor, in a sub-frame, a first control channel in a cell-specific search space that is a search space common within the cell, and a first control channel in a UE-specific search space that is a search space specific to the terminal. In a case where monitoring of a second control channel different from the first control channel that is in the cell-specific search space or the UE-specific search space is configured, the control channel processing unit monitors, in a sub-frame, at least both the first control channel in the cell-specific search space and the second control channel in the UE-specific search space.

Abstract: The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, there are provided a receiver configured to receive an enhanced physical downlink control channel from the base station apparatus; a setting unit configured to be able to set, using at least a format of downlink control information included in the received enhanced physical downlink control channel, one of a plurality of possible sets of M, M being the number of first elements that constitute the enhanced physical downlink control channel; and a monitoring unit configured to monitor a search region in which the enhanced physical downlink control channel obtained on the basis of the set possible set of M is possibly mapped.

Abstract: First information indicating a length of a cyclic prefix for an inter-terminal apparatus signal transmitted to the other terminal apparatus and second information indicating a length of a cyclic prefix for an uplink signal in the EUTRAN, from a base station apparatus of the EUTRAN are received from a base station apparatus of the EUTRAN.

Abstract: There is provided a terminal device that performs first communication with E-UTRAN, and second communication between terminal devices, the terminal device including: a reception unit that receives information relating to resource allocation for the second communication and Downlink Control Information in which information relating to a transmission terminal is included, over a downlink in the first communication, and that performs reception processing in the second communication based on the information relating to the resource allocation; and a transmission unit that performs transmission processing in the second communication based on the information relating to the resource allocation, in which, which one of the reception processing and the transmission processing that are based on the information relating to the resource allocation is performed is determined based on a control information format.

Abstract: Provided is a terminal device configured to transmit an RI for PDSCH transmission, to receive first information used for determining a first maximum number of layers being a first maximum number assumed for determining the bit width for the RI, to receive a transport block on the PDSCH, and to decode a code block of the transport block. Here, in a case that the decoding of the coded block fails, at least soft channel bits corresponding to a range of prescribed soft channel bits are stored, and the prescribed soft channel bits are based on the first information used for determining the aforementioned first maximum number of layers.

Abstract: A terminal device decodes a code block of a transport block, and in a case that a first transmission mode is configured, a rate matching for the code block is processed based on a first total number of soft channel bits; in a case that a second transmission mode is configured and first information is configured, a rate matching for the code block is processed based on the first total number of soft channel bits; and in a case that the second transmission mode is configured and the first information is not configured, a rate matching for the code block is processed based on a second total number of soft channel bits. Here, the first information indicates the maximum number of layers associated with PDSCH transmission.

Abstract: A terminal device transmits an RI determined by the terminal device, the RI corresponding to PDSCH transmission and corresponding to the number of layers, transmits capability information including first information, second information, third information, and/or fourth information, and receives fifth information, wherein the first information indicates a UE category corresponding to a first maximum number of the layers, the second information indicates a first bandwidth class, the third information indicates a second maximum number of the layers, the fourth information indicates a third maximum number of the layers, the fifth information indicates a fourth maximum number of the layers, and a fifth maximum number of the layers assumed for determining a bit width for the RI is given by referring to any one of the first maximum number of the layers, the second maximum number of the layers, and the fourth maximum number of the layers.