Abstract: A user equipment includes a receiver configured to receive a PDSCH and a transmitter configured to transmit a HARQ-ACK response for a serving cell. In a first case that the user equipment communicates with at least a serving cell having a duplex mode that is TDD, the transmitter is configured to transmit, in a primary cell, the HARQ-ACK response in an uplink subframe n upon detection of a PDSCH transmission in the serving cell within a subframe n?k. In a second case that the user equipment communicates with a primary cell and a secondary cell, duplex mode of the primary cell being FDD, the transmitter is configured to transmit, in the primary cell, the HARQ-ACK response in an uplink subframe m upon detection of a PDSCH transmission in the secondary cell in only a subframe m?4.

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, second elements are formed using resources that are obtained by dividing one physical resource block pair, each of first elements is constituted by one or more of the second elements, a control channel is constituted by an aggregation of one or more of the first elements, and there is provided a controller that associates any one of the first elements with one or a plurality of the second elements.

Abstract: A base station device and a terminal device efficiently communicate with each other by using a PDSCH. The base station device and the terminal device determine a starting position of an OFDM symbol for a PDSCH in a serving cell based on a transmission mode relating to transmission of the PDSCH, a DCI format that is used for allocation of the PDSCH, an antenna port that is used for the transmission of the PDSCH, and a higher-layer parameter that is determined from a parameter set for a serving cell in which the PDSCH is received.

Abstract: A terminal device 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 first measurement result obtained by the first measurement and a second measurement result obtained by the second measurement to the base station device. The first measurement is performed in a first state. The first measurement or the second measurement is performed in a second state.

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.

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: There is provided a terminal device capable of efficiently performing communication in a communication system in which the terminal device and a base station device communicate with each other. The terminal device that communicates with the base station device by using a plurality of aggregated cells includes a reception unit that monitors a first CSS and/or USS in a certain serving cell, and monitors a second CSS and/or USS in the certain serving cell. The reception unit monitors the first CSS and USS in a case where the certain serving cell is a primary cell, and monitors the second CSS and USS in a case where the certain serving cell is a secondary cell and has at least one function of the primary cell.

Abstract: In a radio communication system in which a supplemental uplink-downlink configuration can be used, a mobile station device and a base station device efficiently communicate with each other. A mobile station device communicates in prescribed bands. This mobile station device transmits information related to support of a specific uplink-downlink configuration.

Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to configure a slot-long shortened transmission time interval (S-TTI) in a serving cell, the slot-long S-TTI being used for physical downlink shared channel (PDSCH) reception in the serving cell. The instructions are also executable to determine PDSCH Hybrid Automatic Repeat Request Acknowledgement/Negative Acknowledgement (HARQ-ACK) transmission timing for the serving cell, the PDSCH HARQ-ACK transmission timing being determined based on a downlink (DL) association set pre-defined for the slot-long S-TTI. The instructions are further executable to send PDSCH HARQ-ACK information using the slot-long S-TTI, based on the PDSCH HARQ-ACK transmission timing.

Abstract: A user equipment (UE) is described. The UE receives a RRC message including a periodicity. The UE also receives the RRC message including a first parameter. The UE further receives on a physical downlink control channel, DCI with CRC scrambled by a first RNTI that is different from a C-RNTI. The UE additionally performs, in a case that the first parameter is configured, a first PUSCH transmission based on the periodicity and a first offset value, the first offset value being configured by using the RRC message. The UE also performs, in a case that the first parameter is not configured, a second PUSCH transmission based on the periodicity and a second offset value, the second offset value being indicated by using the DCI, the second PUSCH transmission being activated by using the DCI.

Abstract: A node of a radio access network comprises processor circuitry (30) and transmitter circuitry (34). The processor circuitry (30) generates a synchronization signal block comprising a Physical Broadcast Channel (PBCH) and a demodulation reference signal for the Physical Broadcast Channel (PBCH) from which demodulation reference signal a parameter of the radio access network can be determined. The transmitter circuitry transmits the synchronization signal block and the demodulation reference signal over a radio interface (24).

Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to determine uplink control channel (PUCCH) formats and configuration based on a signaling from a base station (gNB). The instructions are also executable to determine a control channel format and resource for uplink control information (UCI) feedback. The instructions are further executable to transmit UCI on a selected channel.

Abstract: A user equipment (UE) is described. Receiving circuitry is configured to receive downlink control information which is used for scheduling of a physical downlink shared channel and to receive, on the physical downlink shared channel, a random access response including a random access response grant. Transmitting circuitry is configured to perform, based on the random access response grant, a transmission on a physical uplink shared channel. In a case that a first value is indicated by using information included in the downlink control information, an index of a physical resource block(s) for the physical uplink shared channel is indicated by using the random access response grant. In a case that a second value is indicated by using the information included in the downlink control information, a plurality of indices of the physical resource block(s) for the physical uplink shared channel is indicated by using the random access response grant.

Abstract: A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a radio resource control message including first information used for configuring a number of more than one code block groups (CBGs) in a transport block (TB). The receiving circuitry is also configured to receive the more than one CBGs, the more than one CBGs comprising first CBGs and second CBGs. The UE also includes processing circuitry configured to determine a number of code blocks (CBs) from the TB. A first number, a second number, a third number, and a fourth number are given based on the number of more than one CBGs and the number of CBs. The first number is a number of the first CBG(s). The second number is a number of CB(s) comprised of each of the first CBG(s). The third number is a number of the second CBG(s). The fourth number is a number of CB(s) comprised of each of the second CBG(s).

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 communication system where a terminal apparatus (UE) communicates with a base station apparatus (BS) that configures a first cell. The UE acquires, from the BS, first information and second information, whereby the first information specifying a first number indicating a first subframe, the first subframe including a first resource element in which a first reference signal of the first cell is placed, the second information specifying a second number indicating a second subframe, the second subframe including a second resource element in which a second reference signal of a second cell other than the first cell is to be placed, and the second resource element being not used to transmit a signal of the first cell. The UE also demaps data, whereby, in the second subframe, the data is mapped on resource elements which do not include the second resource element.

Abstract: There is provided a terminal device which 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 n. 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 the following expression (1), and is applied to the second serving cell of Frame constitution type 1 by using the following expression (2). [Math. 1] BcDL=min(WDAIUL,Mc)??Expression (1) [Math.

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, second elements are formed using resources that are obtained by dividing one physical resource block pair, each of first elements is constituted by one or more of the second elements, a control channel is constituted by an aggregation of one or more of the first elements, and there is provided a controller that associates any one of the first elements with one or a plurality of the second elements.

Abstract: There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit 605 configured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal.

Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to determine a physical uplink control channel (PUCCH) resource and a PUCCH format. The instructions are also executable to transmit uplink control information (UCI) on the PUCCH resource using the PUCCH format. If the PUCCH format is a 2-symbol short PUCCH, 1-symbol PUCCH structure is used in each symbol, and if the UCI is up to 2 bits, the UCI is repeated in two symbols using repetition of a 1-symbol PUCCH. If the PUCCH format is a 2-symbol short PUCCH, and if the UCI is more than 2 bits, the UCI is jointly encoded, and the encoded UCI bits are distributed across two symbols.