Abstract: A user equipment (UE) is described. The UE may include a physical downlink control channel (PDCCH) receiver that is configured to detect multiple PDCCHs in a subframe i?K, the multiple PDCCHs including a first PDCCH. The UE may also include a physical uplink shared channel (PUSCH) transmitter that is configured to transmit multiple PUSCHs, the multiple PUSCHs being transmitted in a license-assisted access (LAA) cell, the multiple PUSCHs including a PUSCH which is scheduled by the first PDCCH, the PUSCH being transmitted in a subframe i. A transmit power of the PUSCH may be derived using a value indicated by a transmit power control (TPC) command field which is included in the first PDCCH.

Abstract: A mobile station (MS) communicates with a base station (BS) by a carrier aggregation using a plurality of downlink component carriers (DCCs). The MS receives on one or more activated DCCs. The MS receives using a PDCCH on one of activated DCCs, from the BS, first information including an information field for requesting a transmission of channel state information (CSI), the first information being used for scheduling of a PUSCH. The MS transmits using the PUSCH in a first subframe on an uplink component carrier, to the BS, first CSI for more than one activated DCCs. The MS transmits using the PUSCH in a second subframe on the uplink component carrier, to the BS, second CSI for only one activated downlink component carrier. The transmission of the second CSI is scheduled by the first information received using the PDCCH on the only one activated downlink component carrier.

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 multi-mode capable LTE-5G new radio (NR) user equipment (UE) for receiving LTE radio resource connection (RRC) messages is described. The UE receives an LTE RRC message from an evolved node B (eNB). The UE also determines which data radio bearer (DRB) to offload to a particular 5G NR system. The UE establishes an RRC with the 5G NR system. The UE steers a particular DRB or DRBs to the 5G NR system. The UE acknowledges receiving the LTE RRC message using LTE or NR connections. The UE updates an LTE system with a status of connections to the 5G NR system.

Abstract: A mobile station device includes an information acquisition unit that is configured to and/or programmed to acquire information, which specifies a system bandwidth and a carrier frequency of a second downlink carrier component different from a first downlink carrier component, transmitted using RRC signaling via a physical downlink shared channel within the first downlink carrier component and a communication unit that is configured to communicate with the base station device by aggregate use of both the first downlink carrier component and the second downlink carrier component, where the first downlink carrier component and the second downlink carrier component have different carrier frequencies and each of the first downlink carrier component and the second downlink carrier component has its own downlink system bandwidth.

Abstract: A user equipment (UE) is described. The UE includes physical downlink control channel (PDCCH) receiving circuitry configured to monitor a first PDCCH with a first DCI format, the first PDCCH with the first DCI format scheduling a physical uplink shared channel (PUSCH). The UE also includes PUSCH transmitting circuitry configured to transmit the PUSCH, the first DCI format including a PUSCH trigger A field and a Transmitter Power Control (TPC) command field. The PDCCH receiving circuitry is further configured to, if the PUSCH trigger A field is set to 1, monitor a second PDCCH with a second DCI format in a valid duration, the second DCI format including a PUSCH trigger B field. If the PUSCH trigger A field is set to 1, the TPC command field applies only when the second PDCCH with the second DCI format of which the PUSCH trigger B field set to 1 is detected.

Abstract: A user equipment (UE) is described. The UE includes a processor. The UE also includes memory in electronic communication with the processor. Instructions stored in the memory are executable to determine a radio frame structure based on a self-contained subframe pattern. The instructions are also executable to receive a downlink data assignment and decode downlink data. The instructions are further executable to determine a hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) feedback timing of the downlink data. The instructions are additionally executable to transmit HARQ-ACK feedback of the downlink data based on the determined HARQ-ACK feedback timing. The instructions are also executable to receive uplink scheduling information. The instructions are further executable to determine an uplink scheduling timing for a scheduled uplink transmission. The instructions are additionally executable to transmit uplink data in a scheduled subframe.

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: 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: It is possible to efficiently transmit and receive signals containing uplink control information between a base station apparatus and a mobile station apparatus. eREG is configured with a plurality of resources into which one DL PRB pair is divided, eCCE is configured with an aggregation of a plurality of eREGs, a second PDCCH is configured with an aggregation of one or more eCCEs, a PUCCH resource corresponds to each eCCE, a first reception processing unit receives information indicating a plurality of second PDCCH regions and information indicating a PUCCH resource in which association with eCCE of the second PDCCH region for each second PDCCH region is started, from the base station apparatus, and a first control unit configures a PUCCH resource, in which association with eCCE of the second PDCCH region is started, for each second PDCCH region, based on the received information.

Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. The UE configures shortened transmission time interval (sTTI) for downlink in a serving cell. The UE also determines a downlink (DL) association set for an uplink subframe. The UE further determines a shortened physical uplink control channel (SPUCCH) format or a PUCCH format used in the uplink subframe, on the basis of at least the number of downlink sTTI(s) within the DL association set.

Abstract: A user equipment (UE) is described. A higher-layer processor is configured to configure a short processing time. A physical downlink control channel (PDCCH) receiver is configured to receive, in a subframe n, a PDCCH. A channel state information (CSI) request field of the PDCCH is set to trigger an aperiodic CSI report. A physical uplink shared channel (PUSCH) transmitter is configured to transmit, in the subframe n+k, a PUSCH corresponding to the PDCCH. The aperiodic CSI report is performed on the PUSCH. In a case that the PUSCH is not a PUSCH based on the short processing time, a CSI reference resource for the aperiodic CSI report is the subframe n. In a case that the PUSCH is a PUSCH based on the short processing time, the CSI reference resource is the subframe n+k?nref. The nref is larger than the k.

Abstract: A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. The UE receives a configuration message of processing time reduction from an evolved node B (eNB). The UE also receives a physical downlink control channel (PDCCH) downlink control information (DCI) for a physical downlink shared channel (PDSCH) with reduced processing time in subframe n?k, where k is smaller than 4. The UE further determines a physical uplink control channel (PUCCH) resource for hybrid automatic repeat request-acknowledgement (HARQ-ACK) reporting. The UE additionally determines HARQ-ACK bits to be reported in subframe n. The UE also transmits the HARQ-ACK in subframe n on the determined PUCCH resource.

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: 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: An evolved NodeB (eNB) is described. The eNB includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to maintain a contention window size. The instructions are also executable to increase the contention window size according to hybrid automatic request acknowledgement/negative acknowledgment (HARQ-ACK) value(s) corresponding to physical downlink shared channel (PDSCH) transmission(s) in a first subframe. The first subframe is a starting subframe of a previous downlink transmission burst on a licensed-assisted access (LAA) carrier for which HARQ-ACK has been fed back.

Abstract: In a wireless communication system in which a base station communicates with a terminal, the base station efficiently notifies of control information for the terminal. A base station apparatus maps an EPDCCH to any of candidates of the EPDCCH included in each of a first EPDCCH set and a second EPDCCH set which are configured by RRC signaling, and a mobile station apparatus monitors the candidate of the EPDCCH. The candidate of EPDCCH is determined at least based on the number of resource elements satisfying a predetermined criterion in one of physical resource block pairs that are configured for EPDCCH transmission in the first EPDCCH set.

Abstract: A user equipment (UE) is described. The UE includes a higher layer processor configured to receive a radio resource control (RRC) message to specify subframes for a channel state information-reference signal (CSI-RS). The UE also includes a control channel receiver configured to monitor a first control channel and a second control channel in a subframe. The first control channel indicates whether the CSI-RS in the subframe is available for CSI measurement. The second control channel is a control channel of which detection indicates a transmission of a shared channel in the subframe. The UE further includes a shared channel receiver configured to receive the shared channel when the second control channel is detected.

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 transmit or receive an ultra-reliable low latency communication (URLLC) transmission that overrides a downlink (DL) schedule or interferes on an uplink (UL) transmission with an enhanced mobile broadband (eMBB) transmission or a massive machine type communication (MMTC) transmission.

Abstract: For aperiodic reporting of CSI, nCQI ref is four, and a subframe n?nCQI ref corresponds to a valid subframe. A subframe that satisfies a criteria including at least a criterion (i) is regarded as being valid. In the criterion (i), in a case where third information for a radio frame is detected, an UL-DL configuration for the radio frame is given by the third information for the radio frame, and in a case where the third information for the radio frame is not detected, the UL-DL configuration for the radio frame is given by first information. The criterion (i) stipulates that the subframe is a subframe indicated as a DL subframe or a special subframe by the UL-DL configuration for the radio frame. In a case where a subframe n?4 is not a valid subframe for aperiodic reporting of channel state information, the reporting of the CSI is omitted in the subframe n.